Role Description Ready to be part of a team that tackles infrastructure challenges? Want to take your engineering skills to the next level by working on complex projects that make a meaningful impact on the community? Parsons is hiring a Senior Mechanical Engineer to work 100% remotely within the U.S. Candidates must be located in Washington or Oregon. What You'll Be Doing: - Creating feasibility studies and conceptual designs for process plant expansion and modification projects. - Evaluating impacts of various design scenarios on existing production and future operability. - Integrating customer requirements into the design process for mechanical and ventilation systems. - Coordinating interdisciplinary requirements to develop building layouts and utility requirements. - Completing a variety of assignments such as drawings, specifications, and other materials suitable for procurement and construction purposes, utilizing CAE/CAD as applicable. - Preparing standard engineering computations, material quantity takeoffs, estimates, surveys, and designs. - Reviewing small and portions of larger supplier drawing submittals and assisting in performing technical bid analyses. - Preparing and issuing specifications, data sheets, and other construction documents. - Providing input and technical guidance to CAD Designer/Drafters, Designers, and lower-level Engineers working on the same project. - Performing other responsibilities associated with this position as may be appropriate. Qualifications - Bachelor's degree in Engineering (or related field) and 8+ years of related work experience. - Experience with nuclear material handling, nuclear fuels, air permitting, and NRC requirements preferred. - Experience in chemical process design projects, including rotating equipment selection and specification, developing and reading P&IDs, and managing equipment lists. - Experience with industrial ventilation design. - Knowledge of material handling systems for bulk containers. - Experience working on interdisciplinary teams to design modifications to existing chemical process systems. - Professional Engineer (PE) license preferred. - Working knowledge of CAD and other PC software packages typically associated with engineering. Requirements - Security Clearance Requirement: None. Benefits - Medical, dental, and vision insurance. - Paid time off. - Employee Stock Ownership Plan (ESOP). - 401(k) plan. - Life insurance. - Flexible work schedules. - Holidays to fit your busy lifestyle.

Role Description We are looking for a Senior Mechanical Systems Engineer who exemplifies strong engineering judgment combined with strong practical mechanical engineering capability. We especially value engineers who have spent time close to real hardware in the field and know the difference between what looks good on paper and what really works. You will work closely with the CTO and the rest of the technical team to complement strong system-level and conceptual thinking with deep practical mechanical judgment. This role is an individual contributor role, but we are looking for someone with the maturity and breadth to become a technical lead in the future. This role is for someone who is energized by understanding how an entire system works, not just producing drawings or sourcing parts. You should be the kind of engineer who wants to understand the “why” behind requirements, spot weaknesses in a design, ask hard questions early, and improve a system’s performance, operability, reliability, and cost. So, you should be comfortable moving between first-principles thinking and practical design decisions. One day that may mean digging into system architecture, operability, or failure modes. Another day it may mean reviewing a P&ID, building CAD, tightening a spec, challenging a vendor design, or catching issues in a drawing package before they become field problems. What You’ll Do - Help develop and refine industrial thermal-fluid systems with a strong eye toward buildability, operability, maintainability, and cost - Contribute to and improve P&IDs, system layouts, piping concepts, mechanical arrangements, and equipment designs - Create CAD models, assemblies, and drawings where needed, not just review them - Critically review prints, layouts, and design packages and catch issues before they reach fabrication or the field - Work across process, mechanical, electrical, controls, and field considerations rather than staying narrowly inside one discipline - Develop technical specifications for major mechanical equipment and supporting components - Drive portions of the design from concept through vendor engagement, detailed design, fabrication, and field feedback - Work directly with suppliers and fabricators to clarify requirements, review designs, answer RFIs, and make sound judgements on open-ended engineering questions - Identify opportunities to standardize or automate parts of the design process, including engineering tools, design workflows, drawing generation, or CAD workflows - Help raise the technical level of the team through strong review, clear reasoning, and high standards while keeping an eye on speed and pragmatism The Kind of Engineer Who Will Thrive Here - Thinks from first principles and wants to understand how the system really works - Has strong intuition for mechanical design, field realities, and failure modes - Can move between concept-level system thinking and detailed execution - Likes startup speed, but still cares deeply about engineering rigor - Takes ownership, notices what others miss, and is comfortable speaking up Requirements - Bachelor’s degree in mechanical engineering or equivalent practical experience - 8+ years of relevant experience in industrial equipment, process equipment, thermal-fluid systems, energy systems, rotating equipment, or related product development - Strong mechanical engineering fundamentals across piping, pressure vessels, materials, heat exchangers, rotating equipment, skidded systems, bearings, and fabrication - Skill creating and modifying P&IDs and translating system intent into practical hardware - Strong CAD capability, ideally in SolidWorks, including ability to create models and drawings directly - Strong print review instincts and the ability to find issues, inconsistencies, and bad assumptions in mechanical design packages - Ability to make sound engineering judgments in ambiguous, first-of-a-kind, or cross-disciplinary situations - Ability to communicate clearly with engineers, vendors, fabricators, and leadership - Willingness to engage with real hardware, real field constraints, and real operating problems Especially Valuable - Experience in an industrial startup or fast-moving product development environment - Hands-on field, commissioning, startup, troubleshooting, or plant support experience - Experience with pumps, compressors, turbomachinery, steam systems, thermal systems, or fluid systems - Working knowledge of relevant codes and standards such as ASME and API - Experience reviewing or developing piping layouts, supports, stress/life considerations, materials selections, and fabrication details - Experience improving engineering workflows through scripting, automation, design tools, or model-based approaches - Ability to use Python or similar tools for engineering analysis or automation What We Value We value engineers who are curious, rigorous, hard to fool, and hard to impress. We look for people who want to understand what is actually going on in a system, who care whether a design will really work, and who are willing to challenge assumptions when something does not look right. We are especially interested in people who combine first principles thinking with practical mechanical depth, independent thinking, and high ownership. Benefits - Flexible PTO - Stock options - Medical, dental, and 401k benefits - Salary range: $130,000 to $160,000 Location We are a remote-first organization; this role is fully remote. The candidate must be currently based in and have the right to work in the United States.

• Define Complex AI/ML infrastructure platform solutions and lead a multi-disciplined team to bring to implementation. • Extensive and focused engagement through EVT, phasing out thereafter. • Ensure overall design quality metrics are met. • Develop and maintain close technical relationships with suppliers/partners on product roadmaps and technologies. • Lead RFQ technical responses and Celestica platform concept development efforts as appropriate. • Provide effective trade-off analysis and competitive guidance to engineering teams and customers. • Deliverables include System Requirements Documents (SRD), requirement compliance assessments, and Technical proposals. • Act as a primary technical interface between Celestica and our customers, particularly in technical escalation. • Provide technical support to business development teams to assist in the winning of new business. • Participate in the selection and hiring of design team resources as required. • Identify and Champion process improvement efforts as needed. • Participate in standards committees and industry groups as assigned. • Prepare and present technical presentations to customers, industry groups, tradeshows, etc. • Maintain current on industry trends and future technology and market opportunities. • Other duties as assigned.

• Define Complex AI/ML infrastructure platform solutions and lead a multi-disciplined team to bring to implementation • Extensive and focused engagement through EVT, phasing out thereafter • Ensure overall design quality metrics are met • Develop and maintain close technical relationships with suppliers/partners on product roadmaps and technologies • Lead RFQ technical responses and Celestica platform concept development efforts as appropriate • Provide effective trade-off analysis and competitive guidance to engineering teams and customers • Deliverables include System Requirements Documents (SRD), requirement compliance assessments, and Technical proposals • Act as a primary technical interface between Celestica and our customers, particularly in technical escalation • Provide technical support to business development teams to assist in the winning of new business • Participate in the selection and hiring of design team resources as required • Identify and Champion process improvement efforts as needed • Participate in standards committees and industry groups as assigned • Prepare and present technical presentations to customers, industry groups, tradeshows, etc. • Maintain current on industry trends and future technology and market opportunities