Deep Fission, Inc

Role Description Deep Fission is seeking an NRC Emergency Protection Licensing Engineer to lead the development, integration, and licensing of emergency preparedness (EP), emergency planning zones (EPZ), and protective action strategies for advanced reactor deployment. This role will focus on ensuring compliance with NRC emergency preparedness requirements while advancing innovative, risk-informed approaches enabled by Deep Fission’s enhanced safety case. This position operates at the intersection of reactor safety analysis, accident consequence evaluation, and regulatory licensing. The engineer will translate accident analysis and source term data into defensible emergency planning strategies and licensing deliverables, supporting engagement with NRC staff throughout the licensing lifecycle. Key Responsibilities - Lead interpretation and application of NRC emergency preparedness regulations (10 CFR 50.47, 10 CFR 52, 10 CFR Part 100, and related guidance such as NUREG-0654 and RG 1.219). - Develop and document emergency planning strategies, including EPZ sizing, protective action recommendations, and emergency classification schemes. - Translate accident analysis, source term, and consequence modeling results into licensing-ready emergency preparedness justifications. - Collaborate with safety analysis, PRA, and systems engineering teams to ensure alignment between design basis accidents, severe accident analysis, and EP assumptions. - Support development of licensing deliverables including Safety Analysis Reports (SAR), Emergency Plan documents, and topical reports. - Lead or support interactions with the NRC on emergency preparedness topics, including pre-application engagements, audits, RAIs, and public meetings. - Evaluate and implement risk-informed, performance-based approaches to emergency planning for advanced reactors. - Coordinate inputs from multidisciplinary teams and external partners (e.g., emergency response organizations, consultants). - Support integration of EP requirements into overall licensing strategy and project execution plans. - Maintain awareness of evolving NRC policy and guidance for advanced reactor emergency preparedness and proactively adapt strategies. Qualifications - 8+ years of experience in nuclear licensing, emergency preparedness, safety analysis, or related field. - Direct experience with NRC emergency preparedness requirements and licensing processes. - Strong understanding of accident analysis, radiological consequence assessment, and source term evaluation. - Experience developing or supporting Emergency Plans, EPZ analyses, or related licensing documentation. - Familiarity with NRC regulatory frameworks including 10 CFR Parts 50 and/or 52. - Ability to translate technical safety analysis into regulatory and licensing arguments. - Bachelor’s degree in Nuclear Engineering, Health Physics, Systems Engineering, or related technical field (or equivalent experience). - Strong technical writing and communication skills. - U.S. citizenship required; must meet export control requirements under 10 CFR 810. Desired Skills & Experience - Experience with advanced reactors or non-light water reactor technologies. - Familiarity with risk-informed EP approaches and SECY papers related to EPZ reduction. - Experience with consequence modeling tools (e.g., MACCS, RADTRAD, or equivalent). - Background in probabilistic risk assessment (PRA) or severe accident analysis. - Experience supporting NRC audits, RAIs, or licensing submittals. - Familiarity with FEMA coordination and offsite emergency planning considerations. - Experience with digital tools for regulatory documentation and compliance tracking. - Advanced degree (MS or PhD) in Nuclear Engineering, Health Physics, or related field. Key Competencies - Technical-Regulatory Integration: Connects accident physics, consequence analysis, and regulatory requirements into a cohesive licensing strategy. - Risk-Informed Thinking: Applies PRA insights and safety case strengths to optimize emergency planning approaches. - Regulatory Fluency: Demonstrates strong understanding of NRC EP expectations and engagement processes. - Analytical Rigor: Produces defensible, high-quality technical justifications for EP decisions. - Execution Focus: Drives timely delivery of EP-related licensing products. - Collaboration: Works effectively across safety, design, and licensing teams. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description Hiring at Deep Fission is a strategic function and this role is proof of that. As our first dedicated recruiting leader, you won’t just fill roles. You’ll build the system, the brand, and the culture of hiring that determines who Deep Fission becomes. We’re working on one of the most consequential technology challenges of our time, and we need a team that reflects the full breadth of human talent and perspective to solve it. That means building a recruiting function that doesn’t just move fast but it moves thoughtfully, with equity and inclusion embedded into every stage of the process. You’ll own full-cycle hiring across the organization, build the infrastructure from the ground up, and partner directly with the executive team to turn headcount plans into great hires. This starts as a senior individual contributor role, with a clear path to building and leading a small team as we scale. Key Responsibilities - Build & Lead the Recruiting Function - Design and own the end-to-end recruiting process — intake, pipeline management, offer approval, and reporting — with a focus on consistency, speed, and quality - Establish structured, bias-mitigated interview frameworks and calibrate hiring managers on what great looks like across functions - Define and track recruiting metrics that matter: time-to-hire, pipeline conversion, source quality, offer acceptance, and diversity of candidate slates - Build a candidate experience that reflects our values at every touchpoint, regardless of outcome - Leverage AI tools and automation to scale your impact from sourcing and screening to scheduling and reporting and bring a point of view on where AI creates leverage and where human judgment is irreplaceable - Drive Diversity, Equity & Inclusion in Hiring - Develop and own a proactive diversity sourcing strategy not as a checkbox, but as a core part of how we build the company - Audit and continuously improve job descriptions, interview panels, and evaluation criteria to reduce bias and broaden the candidate pool - Build relationships with organizations, universities, and communities that expand access to underrepresented talent in deep tech, nuclear, and energy sectors - Champion inclusive hiring practices across the organization and coach hiring managers to do the same - Source & Attract Specialized Talent - Develop targeted sourcing strategies for hard-to-find talent: nuclear engineers, NRC-experienced regulatory professionals, DOE/DOD alumni, and energy infrastructure specialists - Build Deep Fission’s presence in the talent communities that matter such as national labs, professional associations, HBCUs and research universities, veterans’ networks, and emerging energy programs - Partner with leadership to articulate a compelling, authentic employee value proposition that resonates across diverse talent pools - Partner with Leadership - Translate headcount plans into actionable hiring roadmaps with realistic timelines, resource requirements, and risk flags - Advise hiring managers on role scoping, leveling, compensation strategy, and when to move (or not) - Serve as a genuine thought partner to the executive team on org design, talent strategy, and the long-term workforce plan Qualifications - 8+ years of recruiting experience, including at least 3 years owning recruiting strategy at a startup or high-growth company - Demonstrated success building or significantly improving a recruiting function — not just operating within one - Proven experience developing and executing diversity sourcing strategies and embedding equitable practices into the hiring process - Track record of hiring across technical and non-technical functions simultaneously, with high quality and at pace - Comfort operating in an AI-native environment meaning that you use AI tools fluently in your own work, have a perspective on how they’re changing recruiting, and can help the organization think through what that means for how we hire and for what - Strong executive presence and is comfortable advising, challenging, and aligning at the C-suite level - Sharp judgment on candidate quality, offer strategy, and process design Desired Skills & Experience - Experience recruiting in energy, defense, deep tech, nuclear, or other regulated, capital-intensive industries - Familiarity with government-adjacent talent pools (DOE, DOD, national labs, federal contractors) - Experience scaling a team from ~60 to 150+ employees - Background working with DEI-focused hiring initiatives in technical or STEM-heavy organizations Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description Deep Fission is seeking a Director / Senior Director of Nuclear Program Development & Integration to serve as the senior organizational integrator responsible for building and aligning the corporate programs required for regulatory credibility and commercial deployment. As the company scales from early DOE-supported development toward NRC licensing and site-based operations, this role ensures that programs across engineering, quality assurance, procurement, construction, operations, safety, and compliance evolve together as a coherent system — not in isolation. This is not a functional ownership role. It is a strategic integration role for someone who understands how nuclear organizations must be built programmatically — and who can identify structural gaps before they become regulatory or operational liabilities. The ideal candidate has lived the full lifecycle of a nuclear enterprise, brings deep familiarity with NQA-1 frameworks and NRC expectations, and is energized by the challenge of building foundational infrastructure in parallel with active project execution. Key Responsibilities - Enterprise Program Development & Integration - Establish and maintain an integrated framework across all corporate programs — including engineering, QA, procurement, construction, operations, safety, and regulatory compliance. - Lead the identification, development, and maturation of the corporate programs required to support near-term project execution and long-term regulatory success. - Identify gaps in the company's programmatic structure and work with leadership to define ownership, prioritize development, and drive resolution. - Identify and engage appropriate internal subject matter experts and external industry resources to accelerate development of critical programs. - Ensure interfaces between programs are clearly defined and functioning effectively across the organization. - Align project execution — including the Reactor Pilot Program (RPP) — with the corporate infrastructure required to support it. - Regulatory & Licensing Alignment - Ensure company programs support DOE project execution while positioning the organization for future NRC licensing. - Maintain alignment between company programs and Deep Fission's risk-informed, performance-based regulatory strategy. - Ensure design, procurement, construction, and operational activities are supported by appropriate documentation, traceability, and configuration control. - Cross-Functional Program Coordination - Serve as the integrator across all major corporate programs, including: Systems Engineering & Design Control, Quality Assurance & NQA-1 program structures, Procurement & Supply Chain, Configuration Management & Component Identification, Mechanical Engineering & Drawing Control, Construction / Wellbore / Drilling & Completion, Operations Readiness, Health & Safety, Document Control & Records Management, Regulatory Strategy & Licensing, and Legal & Compliance (including Export Controls). - Drive development of program documentation, processes, and implementation plans required to operationalize these programs across the organization. - Ensure all programs operate within a coherent framework and that interfaces are designed intentionally as the company grows. - Organizational Governance - Provide senior-level oversight of program interfaces across the organization. - Ensure established processes are understood and followed across functions. - Facilitate resolution of cross-program conflicts and coordination challenges. - Identify situations where project execution may outpace supporting infrastructure and raise those risks proactively to leadership. - Prioritize development of foundational programs required for near-term project execution and regulatory credibility. Qualifications - Demonstrated experience within the nuclear industry and a deep understanding of the program structures required to support nuclear regulatory compliance and plant operations. - Extensive experience with enterprise-level nuclear programs spanning engineering, QA, procurement, construction, and operations. - Deep understanding of NQA-1 quality programs, design control, configuration management, and nuclear regulatory frameworks. - Experience supporting nuclear licensing efforts or direct engagement with the NRC or DOE on regulatory matters. - Demonstrated ability to coordinate across multiple technical and operational organizations simultaneously. - Strong understanding of the programmatic interfaces required for nuclear organizations to function effectively within a regulated environment. - U.S. citizenship required. Must be able to meet Export Control requirements under 10 CFR 810. Desired Skills & Experience - Experience with advanced reactor companies or nuclear startups, with demonstrated ability to build programs in parallel with active project execution. - Background in nuclear plant operations, licensing, or large-scale nuclear program management. - Experience integrating programs across engineering, construction, and operational readiness — particularly in first-of-a-kind or pre-commercial environments. - Familiarity with DOE project environments, including DOE Order 420.1C and 10 CFR 830, and NRC regulatory expectations for advanced reactor licensing. - Demonstrated experience developing and implementing nuclear enterprise programs within operating plants, major nuclear projects, or advanced reactor organizations. Key Competencies - Systems Thinking – Understands how programs across a full nuclear enterprise must function together and can identify structural gaps before they create operational or regulatory risk. - Regulatory Fluency – Speaks the language of DOE and NRC, with the credibility to engage regulators directly and the judgment to align company programs with evolving licensing strategy. - Strategic Integration – Functions as an integrator, not a functional owner — comfortable working across technical, operational, and compliance disciplines without needing to control each one. - Builder's Mindset – Energized by building foundational infrastructure in ambiguous, fast-moving environments where the program structure must be created, not inherited. - Execution Discipline – Balances startup agility with regulatory rigor — prioritizes the right programs at the right time and drives them to completion without losing sight of the larger framework. - Risk Awareness – Proactively identifies situations where project execution may outpace programmatic infrastructure and raises those risks clearly and early. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description The Nuclear Engineer I, Core Design supports the design, development, and safety analysis of Deep Fission's deep borehole pressurized water reactor. This role performs calculations and analyses in support of core design, shielding design, reactivity and criticality control, and nuclear and radiological safety. - Execute design, analysis, or evaluation activities using sound engineering principles and adhering to business standards, practices, procedures, and product/program/project requirements. - Perform work in accordance with design control procedures, ensuring thorough documentation of work, facilitation of internal and external design reviews, and control of product design configuration data. - Influence and support the development of strategy, methodology, and technical tools for the area of responsibility. - Interpret internal and external business challenges and recommend best practices to improve products, processes, tools, or services. - Use judgment to support decision making and the handling of complex tasks or problems in areas of operations, product management, technology, or engineering. - Work within a multidisciplinary engineering team. - Perform other duties as assigned by manager. Qualifications - Bachelor's degree in nuclear engineering or related technical discipline from an accredited university or college. - 3-5 years of engineering experience. - Possess working-level knowledge or technical experience in one or more of the following areas: - Reactor core design and analysis. - Radiation shielding design and analysis. - Nuclear fuel analysis and qualification. - Criticality safety. - Reactor multi-physics analysis, especially pertaining to transient analysis. - Nuclear analysis software development, verification, and validation. - Other areas of nuclear engineering or nuclear physics relevant to the design and analysis of light-water reactors, small modular reactors, microreactors, and other nuclear facilities. Desired Skills & Experience - Experience with reactor physics codes and methods (MCNP, SCALE, PARCS). - Experience with NQA-1 in a nuclear environment. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description This position is a nuclear engineer who supports the design, development, and safety analysis of nuclear reactors. Functions within this role include performing calculations and analyses to support nuclear and radiological safety, shielding design, reactivity and criticality control, and core design. Key Responsibilities - Execute design, analysis, or evaluation activities using sound engineering principles and adhering to business standards, practices, procedures, and product/program/project requirements. - Possess working level knowledge of, or technical experience in one or more of the following areas: - Influence and support the development of strategy, methodology and technical tools for the area of responsibility. - Interpret internal and external business challenges and recommend best practices to improve products, processes, tools, or services. - Use judgement to support decision making and the handling of complex tasks or problems in areas of operations, product management, technology, or engineering. - Work within a multidisciplinary engineering team. - Perform work in accordance with design control procedures, ensuring thorough documentation of work, facilitation of internal and external design reviews, and control of product design configuration data. Qualifications - 3-5 years of experience in the relevant engineering discipline, including successful delivery of Mechanical Handling designs. - Background in regulated environments such as nuclear, aerospace, defense, or industrial capital projects. - Bachelor’s degree in Nuclear Engineering or related technical discipline. - Ability to maintain communication and stakeholder engagement in a virtual and hybrid team environment. - Ability to travel - Candidate will be required to travel on approximately 10% of the year and depending on the project phase. - Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810. Desired Skills & Experience - Experience with Nuclear Safety Analysis codes and methods (e.g., MELCOR, RADTRAD, SAPHIRE, SCALE, ORIGEN). - Experience with NQA-1 in a nuclear environment. - Proficiency with engineering software tools and AI-enabled platforms. - Experience in startup or innovation-driven organizations. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description The Chief People Officer (CPO) is a member of the executive leadership team and leads Deep Fission's people strategy during a period of rapid growth, increasing regulatory complexity, and organizational transition from R&D to operational readiness. Reporting directly to the CEO, the CPO partners closely with the executive team, Board of Directors, and Legal and Finance leadership to build the workforce, governance, and systems the company needs to scale safely and effectively. This role is both strategic and hands-on — and the emphasis on hands-on is real. Deep Fission is building its people infrastructure in real time, and the CPO will be as much architect as operator. The CPO will play a critical role in technical hiring, site-based operations, employment law compliance, and reinforcing a strong safety culture aligned with nuclear industry expectations. The right candidate is someone who is energized by building in ambiguity — who sees an evolving org chart and an incomplete HR stack not as obstacles, but as the job. Key Responsibilities - Executive Leadership, Governance & Workforce Strategy - Serve as a strategic advisor to the CEO and executive leadership team on workforce planning, organizational design, executive compensation, and people-related risk. - Partner with the Board of Directors and Compensation Committee on executive compensation programs, incentive design, succession planning, and governance — building these processes where they don't yet exist in mature form. - Align hiring plans, organizational structure, and people investments with operational milestones, regulatory timelines, and capital plans — in an environment where those plans are actively evolving. - Lead the people-side change management required as the company transitions from early-stage R&D to site-based operations and commercial readiness. - Build and own human capital governance processes appropriate to a company growing into increasing public and regulatory visibility. - Talent Strategy & Executive Hiring - Build and lead recruiting strategy for highly specialized technical roles, including nuclear engineers, reactor and operations staff, and regulatory professionals. - Design competitive compensation, equity, and total rewards programs suited to a high-growth company competing against both established nuclear players and well-funded startups. - Partner with executive leadership on senior and executive-level hiring, onboarding, and leadership integration. - Safety, Culture & Manager Effectiveness - Champion a safety-first organizational culture consistent with nuclear industry standards as the company prepares for site-based operations including building the training, documentation, and accountability structures that don't yet fully exist. - Partner with Operations, Legal, and site leadership to develop safety training, incident response protocols, and documentation processes. - Build manager capability and accountability through clear expectations, training, and support with particular attention to safety-sensitive and frontline roles where management infrastructure is still being established. - Support leadership development and succession planning for critical technical and operational roles. - HR Operations, Compliance & Risk Management - Own employment law compliance across federal, state, and local jurisdictions, with particular fluency in California employment law. - Build and oversee HR operations infrastructure such as HRIS, benefits, payroll coordination, policies, employee relations, and documentation with a focus on scaling systems to meet the company's growth rather than inheriting a finished stack. - Serve as a key leader in people-related crisis and incident response in coordination with Legal and executive leadership. - Partner closely with internal and external legal counsel on employment matters, investigations, and regulatory considerations. - Team Building & Function Scaling - Build a lean, high-impact People team from an early-stage foundation, including HR operations, compliance, and recruiting support. - Establish decision rights, escalation paths, and operating rhythms within the People function — creating structure where structure is needed and staying nimble where it isn't. - Anticipate when and how to scale the team as additional sites come online and organizational complexity increases. Qualifications - 15+ years of progressive HR experience, including senior leadership at the VP or CPO level. - Demonstrated experience building HR functions in high-growth, startup, or rapidly scaling organizations including environments where processes and infrastructure were created, not inherited. - Track record of operating effectively in ambiguity, comfortable making decisions and building structure when playbooks don't yet exist. - Experience engaging with Boards of Directors and Compensation Committees, whether in a public, pre-IPO, or investor-backed context. - Deep knowledge of employment law and HR compliance, including strong fluency in California employment law. - Experience supporting distributed and multi-state workforces. - Proven ability to partner with and influence CEOs, executive teams, and senior investors. - Strong judgment, executive presence, and clear, direct communication style. - Bachelor's degree required. Desired Skills & Experience - Experience in nuclear energy, clean energy, aerospace, defense, infrastructure, or other safety-critical, highly regulated industries. - Experience supporting site-based or field operations alongside corporate teams. - Exposure to labor strategy, mixed workforce models (hourly, salaried, contractors), or union-adjacent environments. - Experience managing people-side risk during significant organizational transitions — regulatory scale-up, operational launch, or similar inflection points. - SHRM-SCP, SPHR, or equivalent certification. - Experience supporting international or cross-border teams or vendors. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description Deep Fission is seeking a Senior Licensing Engineer to lead regulatory planning and support for its advanced reactor development under the Department of Energy (DOE) authorization framework and subsequent NRC license approval. This role will translate regulatory requirements into actionable strategies for engineering execution, support preparation of licensing deliverables, and drive engagement with DOE and NRC regulators throughout the reactor design lifecycle. The ideal candidate will bring a strong technical background in reactor systems or nuclear safety, paired with deep experience in DOE or NRC regulatory processes. This role demands someone who can operate confidently at the intersection of engineering design and compliance—grounded in the technical realities of reactor development while guiding the strategy to meet and shape regulatory expectations. This is a high-impact role for someone ready to push the boundaries of conventional licensing, leveraging Deep Fission’s compelling safety case to drive innovation in how advanced reactors are evaluated and authorized. Key Responsibilities: - Lead the interpretation, decomposition, and application of DOE and NRC regulatory requirements applicable to Deep Fission’s reactor development program. - Collaborate with engineering and safety teams to define the technical approach for demonstrating regulatory compliance, including development of structured compliance matrices and execution plans. - Develop and document licensing strategies, authorization plans, and regulator engagement plans tailored to a phased DOE to NRC licensing approach. - Coordinate technical inputs and author licensing deliverables, including safety case summaries, design basis documentation, and regulatory correspondence. - Act as a regulatory subject matter expert in cross-functional reviews, design milestones, and strategic planning discussions. - Lead or contribute to regulatory interactions including DOE and NRC briefings, audits, pre-application engagements, and comment resolution. - Stay current with evolving U.S. licensing frameworks for advanced reactors and proactively identify opportunities to influence or adapt regulatory strategy accordingly. - Support program planning, risk analysis, and configuration management related to licensing activities. - Maintain strong familiarity with AI-enabled tools for regulatory document management, structured compliance tracking, and analysis automation. Qualifications - 8+ years of experience in nuclear reactor licensing, regulatory affairs, nuclear safety analysis, or relevant work. - Proven experience supporting DOE reactor authorization or NRC Part 50/52 licensing with demonstrated ability to translate to DOE frameworks, with direct DOE authorization experience preferred. - Deep understanding of regulatory frameworks relevant to advanced reactor designs. - Experience translating engineering requirements into actionable regulatory deliverables. - Strong technical writing skills and familiarity with the structure and expectations of licensing documents and correspondence. - Bachelor’s degree in Nuclear Engineering, Systems Engineering, or related technical field, or commensurate experience. - Excellent communication and collaboration skills across multidisciplinary teams and stakeholders. - U.S. citizenship required. Must be able to meet Export Control requirements under 10 CFR 810. Desired Skills & Experience - Experience with DOE Order 420.1C, 10 CFR 830, or equivalent high-consequence nuclear safety standards. - Experience developing materials associated with 10 CFR Parts 50 or 52. - Background in reactor systems design, safety analysis, or engineering configuration management. - Familiarity with modern tools for regulatory documentation, requirements management, and AI-supported workflow automation. - Prior experience supporting first-of-a-kind or advanced reactor technologies. - Advanced degree (MS or PhD) in Nuclear Engineering, Law, or Public Policy. Key Competencies - Technical-Risk Awareness – Understands where design choices intersect with licensing risk and develops plans accordingly. - Execution Focus – Drives measurable progress on licensing products in collaboration with engineering and QA teams. - Innovation-Driven – Seeks opportunity to streamline, modernize, and advance regulatory processes using digital tools and a compelling safety narrative. - Technical-Regulatory Integration – Strong engineering foundation with the ability to interpret, apply, and strategically respond to regulatory requirements within a complex technical program. - Strategic Licensing Vision – Capable of shaping forward-looking licensing plans that reflect novel technologies and leverage Deep Fission’s enhanced safety case. - Regulatory Fluency – Speaks the language of DOE and NRC and brings confidence in written and verbal engagement with regulators. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description Deep Fission is seeking an experienced Senior Engineer to support performance of thermal-hydraulic (T/H) and nuclear safety analyses in support of the design development and licensing of its first-of-a-kind underground pressurized water reactor (PWR). The reactor concept utilizes standard LEU fuel assemblies and conventional PWR thermal-hydraulic conditions, uniquely sited approximately one mile underground. This role sits within the Thermal-Hydraulics Group and represents a key technical contributor to the reactor’s safety analysis program. The successful candidate will bring hands-on experience with DOE or NRC accepted system-level codes and analysis methodologies applied to licensed PWR applications. In addition to performing design-basis and beyond-design-basis transient and accident analyses, this engineer will help shape Deep Fission’s overall safety analysis and licensing strategy, support code validation and verification (V&V) activities, and develop the reactor system models used for analysis. Because Deep Fission is an early-stage company, this role requires adaptability and a willingness to take on responsibilities across the broader engineering and licensing program as the project evolves. Key Responsibilities - Perform design-basis and beyond-design-basis thermal-hydraulic analyses, including non-LOCA transients, reactivity-initiated accidents (RIAs), loss-of-flow, and station blackout (SBO) scenarios. - Develop, maintain, and benchmark reactor system models using T/H codes in accordance with applicable regulatory requirements and quality assurance standards. - Support the development and execution of the Code Validation and Verification (V&V) program, including the preparation of V&V reports and uncertainty quantification in support of NRC licensing submittals. - Contribute to the development of Deep Fission’s overall safety analysis methodology and licensing strategy, including selection of analysis codes, determination of licensing basis events, and definition of acceptance criteria. - Prepare and review safety analysis documentation including design-basis accident analyses, safety analysis reports (PSDA/DSA or PSAR/FSAR sections), technical specifications bases, and responses to regulator questions and requests for information. - Ensure effective coordination with reactor physics, systems, mechanical, and licensing teams to maintain technical alignment across the design and safety basis. - Participate in design reviews, safety review committee activities, and in-person technical workshops. - Promote a proactive nuclear safety culture and advocate for Deep Fission and its technology in technical and regulatory forums. - Perform additional tasks as requested by management, which may include supporting construction, procurement, startup testing, and operational licensing activities as the project matures. Qualifications - 7+ years of experience performing nuclear thermal-hydraulic and safety analyses in a licensed nuclear application environment. - Bachelor’s degree in Nuclear Engineering, Mechanical Engineering, or a closely related technical field. - Demonstrated proficiency in one or more NRC-accepted T/H system codes applied in licensed PWR applications, including RETRAN, RELAP5 (or RELAP5-3D), TRACE, and/or GOTHIC. - Experience developing and executing reactor system models for design-basis LOCA and non-LOCA analyses, including model development, nodalization, and steady-state benchmarking. - Working knowledge of NRC regulatory requirements applicable to safety analysis, including 10 CFR Part 50, Appendix K, the Revised Acceptance Criteria (Best-Estimate LOCA), and associated regulatory guides. - Familiarity with nuclear quality assurance requirements (e.g., 10 CFR 50 Appendix B, NQA-1) and their application to safety analysis and software V&V. - Proven ability to prepare and review technical documentation intended for NRC review, including safety analysis calculations, topical reports, or FSAR sections. - Ability to work effectively in a virtual and hybrid team environment with multiple interfaces and stakeholders. - Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810. Desired Skills & Experience - Master’s degree or Ph.D. in Nuclear Engineering or Mechanical Engineering. - Licensed Professional Engineer (PE) in a relevant discipline. - Direct experience supporting NRC licensing submittals, including topical report preparation, RAI responses, and/or ACRS interactions. - Experience developing or contributing to a safety analysis methodology program at a reactor vendor, utility, or nuclear engineering firm. - Familiarity with uncertainty quantification methods (e.g., CSAU, ASTRUM, or similar statistical approaches) for best-estimate T/H analyses. - Experience with first-of-a-kind nuclear designs, SMRs, or novel licensing pathways (10 CFR Part 52 or emerging 10 CFR Part 53 framework). - Proficiency with scripting tools (Python, MATLAB) for model automation, post-processing, and sensitivity studies. - Experience with AI-enabled engineering platforms and modern simulation toolchains. Key Competencies - Technical Depth – Advanced understanding of thermal-hydraulic phenomena in light water reactor systems, including two-phase flow, critical heat flux, natural circulation, and reactor transient behavior. - Licensing Acumen – Ability to translate regulatory requirements into defensible analysis approaches and documentation that will withstand NRC scrutiny. - Strategic Thinking – Capacity to help define and advance Deep Fission’s safety analysis and licensing approach at both the technical and programmatic level. - Adaptability/Resilience – Ability to thrive in an early-stage, resource-constrained environment, adjusting priorities and scope as the project evolves. - Organizational – Experience functioning within structured engineering programs with multiple engineering disciplines, subcontractors, and regulatory stakeholders. - Communication – Demonstrated ability to clearly convey complex technical concepts in written reports and verbal presentations to both internal teams and external regulators. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description The Senior Manager, Business Development is responsible for advancing late-stage commercial opportunities and ensuring momentum from warm prospect to executed agreement. This role focuses on contract execution, state and regulatory engagement, and cross-functional coordination to move complex deals forward. The role is designed to take ownership of downstream commercial execution, allowing senior leadership to focus on origination and strategic growth. This is a senior individual contributor role with no direct reports, working closely with internal and external partners across legal, regulatory, project development, and finance. Key Responsibilities - Commercial Deal Execution - Drive progress on late-stage commercial opportunities once prospects are engaged, including NDAs, LOIs, and definitive agreements. - Coordinate contract development and execution in partnership with internal legal teams and external counsel. - Track deal milestones, dependencies, and open items to ensure steady forward progress. - Support negotiations and help resolve gaps between commercial intent and executable agreements. - State & Regulatory Engagement - Coordinate state-level engagement and regulatory touchpoints in partnership with Regulatory Affairs and Permitting teams. - Track and manage state-specific requirements, timelines, and approvals that impact commercial execution. - Support alignment between commercial agreements and licensing, permitting, and regulatory pathways. - Government & Institutional Opportunities - Organize and track opportunities with DOE, DOD, national laboratories, and other government or institutional partners. - Maintain calendars, deadlines, and submission requirements for government-related opportunities. - Coordinate inputs across internal teams to support timely and complete submissions. - Cross-Functional Coordination - Work closely with Regulatory Affairs, Legal, Permitting and Licensing, Project Management, and Project Finance to align commercial terms with project execution realities. - Serve as a connective point between commercial objectives and operational delivery. - Ensure information flows smoothly across teams and that decisions are well-documented and followed through. Qualifications - 5–10 years of experience in commercial roles within energy, infrastructure, or related capital-intensive industries. - Hands-on experience negotiating and executing complex contracts and commercial agreements. - Strong understanding of deal processes from engagement through execution. - Demonstrated ability to manage multiple stakeholders and move work forward without direct authority. - Excellent organizational skills and follow-through in long-cycle, ambiguous environments. Desired Skills & Experience - Experience working with federal entities such as DOE, DOD, national laboratories, or similar government partners. - Familiarity with state engagement, permitting, or licensing processes. - Exposure to renewable PPAs, thermal assets, or infrastructure project development. - Nuclear industry experience is a plus, but not required. Our Commitment Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.

Role Description This position is a nuclear engineer who supports the design, development, and safety analysis of nuclear reactors. Functions within this role include performing calculations and analyses to support nuclear and radiological safety, shielding design, reactivity and criticality control, and core design. - Execute design, analysis, or evaluation activities using sound engineering principles and adhering to business standards, practices, procedures, and product/program/project requirements. - Possess working level knowledge of, or technical experience in one or more of the following areas: - Influence and support the development of strategy, methodology and technical tools for the area of responsibility. - Interpret internal and external business challenges and recommend best practices to improve products, processes, tools, or services. - Use judgement to support decision making and the handling of complex tasks or problems in areas of operations, product management, technology, or engineering. - Work within a multidisciplinary engineering team. - Perform work in accordance with design control procedures, ensuring thorough documentation of work, facilitation of internal and external design reviews, and control of product design configuration data. Qualifications - 3-5 years of experience in the relevant engineering discipline, including successful delivery of Mechanical Handling designs. - Background in regulated environments such as nuclear, aerospace, defense, or industrial capital projects. - Bachelor’s degree in Nuclear Engineering or related technical discipline. - Ability to maintain communication and stakeholder engagement in a virtual and hybrid team environment. - Ability to travel - Candidate will be required to travel on approximately 10% of the year and depending on the project phase. - Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810. Requirements - Experience with Nuclear Safety Analysis codes and methods (e.g., MELCOR, RADTRAD, SAPHIRE, SCALE, ORIGEN). - Experience with NQA-1 in a nuclear environment. - Proficiency with engineering software tools and AI-enabled platforms. - Experience in startup or innovation-driven organizations. Benefits Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.