About Shelf Shelf builds software that helps enterprises make AI work in the real world. That only works when our systems are secure, observable, and maintainable under real production pressure. About the Role This role is for a senior backend engineer who will focus full-time on security work. We are not looking for a policy-only security person. We are looking for a hands-on engineer who can improve our security posture by changing real systems, fixing real problems, and following through until the work is fully implemented and maintained. This role is embedded close to support and operational engineering, so it stays connected to real incidents, real customer impact, and real follow-through. The scope is broader than one team. You will work across the company’s engineering surface wherever security work needs to land. What You Will Own - Find and fix concrete security issues in production systems, not just identify them. - Improve token lifecycle, revocation, auth flows, auditability, and access controls across backend systems. - Reduce or eliminate security-sensitive data exposure in logs, events, traces, and internal tooling. - Improve security detection, logging, and audit trails so incidents are easier to detect, investigate, and contain. - Rotate secrets, reduce long-lived credentials, tighten access, and relentlessly follow through on overdue security hygiene work. - Review security findings from scanners and assessments, separate signal from noise, fix valid issues quickly, and improve the underlying architecture where needed. - Sweep broadly when necessary, including across many repositories and services, rather than stopping at local ownership boundaries. - Contribute to AI-security and modern application-security work where relevant, including risks introduced by new AI initiatives. - Write useful technical documentation, post-incident follow-ups, and implementation notes that help security work stay real after the first fix lands. What Strong Performance Looks Like - Security improvements actually land in production and stay maintained over time. - Important follow-through work does not get dropped because it is tedious, cross-cutting, or spread across many repos. - You can tell the difference between a theoretical issue and a real one, and you act with urgency when the risk is real. - Incidents lead to better systems, tighter controls, and faster detection instead of only better wording in a document. - Teams trust you because you improve security by doing the work, not by adding ceremony around it. What We Are Looking For - Strong senior-level backend engineering experience in production systems. - Real hands-on experience implementing security improvements in code, infrastructure, or operational workflows. - Experience with application-security topics such as auth, token handling, access control, audit trails, logging, secrets, vulnerability remediation, or incident follow-through. - Strong debugging and investigative instincts. You can trace ugly real-world issues through code, logs, and system behavior. - Comfort working across many services and repositories when the problem requires a broad sweep. - Ability to go from problem statement to implementation to enforcement with real ownership. - Clear written and verbal communication. You can explain risk, trade-offs, and follow-up work without hiding behind vague security language. - AI-native working style. You already use AI tools in your daily engineering workflow and know how to verify their output. Strong Plus - Experience improving security posture after real incidents or near-miss events. - Experience with AI-security, OWASP AI topics, or securing LLM-enabled systems. - Experience improving queryability, logging, and forensic visibility for incident response. - Experience moving systems from weak defaults to safer patterns such as stronger token handling or better credential models. How We Evaluate Fit We care more about implementation, enforcement, and follow-through than about certifications, policy language, or security theater. If you are the kind of engineer who sees a real security gap and closes it across the codebase instead of writing a recommendation and walking away, we want to talk. What Shelf Offers: - B2B contract. - Company Stock Options. - Hardware: MacBook Pro. - Modern technical stack. Develop open-source software. - GitHub Copilot subscription. - Access to Claude Code, OpenAI Codex, TypingMind, and MCP Servers. Why Shelf: - Our Leadership Team has deep knowledge management and AI domain expertise and enterprise SaaS background to execute this plan - We love our customers and our customers love us. Ask a Shelf customer why, and they’ll tell you it’s because of our innovative capabilities, rock-solid reliability, they truly enjoy working with our people, but most of all – it’s the improvements they see in their business KPIs. - We have raised over $60 million in funding and our investors include Tiger Global, Insight Partners, Connecticut Innovations, and others - We have high velocity growth powered by the most innovative product in our category, 3X growth for 3 years in a row - We now have over 100 employees in multiple U.S. states and European countries, and we have ambitious hiring goals over the next few months Our Values: Quality - We’re united by our focus on world‑class Quality. Quality in all things – starting with everything that leaves your desk. Everything you touch – every email, report, campaign, and piece of code – should be outstanding. Your work product should blow people away. Having people look at what you’ve done and say, “Wow.” That’s the standard here. Remember that how you do anything is how you do everything. Focus on craftsmanship—your ability to make things better. Momentum - for us means that you should know that the things you’re responsible for are moving forward. When you look around and see something that’s stalled, get it moving again. We pride ourselves on “ball movement.” When your boss or team leaves you with something, they should return to see measurable progress. Small, continuous movement is our recipe for success. Constantly look for how to make the work around you move forward. We want you to initiate solutions, ideas, and progress. Don’t wait for it to come to you—reach out and create movement. All the time. Accountability - We expect every team member to feel that they are accountable for more than anyone might normally expect. Each of us should feel real responsibility for things even at the edge of our control. We consistently share and align on expectations, give each other open and respectful feedback, and use those two drivers to ensure that every agreement we make with one another is clear and complete. Hard Work - We’re here to do something difficult together. We care intensely about the mission and we expect that from our teammates. That care means that we work hard here. Hard work comes with long hours, extra effort…and real opportunity at Shelf. Your passion for creating and sustaining output is a part of our DNA. Support each other, cheer each other on, drive the mission forward. Great teams sustain intense effort together to win. Learning Agility - We’re innovating in one of the fastest‑moving spaces in history at a time of accelerating global change. That’s incredibly exciting and requires each of us to commit fully to learning each and every day so that we can be the best at what we do. None of us know everything. All of us can learn anything. Staying open and constantly curious is a key success driver at Shelf. It also requires humility. We prize people who are consistently humble and open to making mistakes and growing from them. Recognize also that learning itself is a skill…we need you to be really good at it. Keep dialing in your own understanding about how you learn best and push yourself to keep growing. Adapt and Thrive - Overcoming challenges lives deep in our DNA. We have a proud history of understanding and living the reality that obstacles are our opportunities…they’re the key to our success. Change is a constant in our business and fighting change is counterproductive. We need you to be good at being uncomfortable and understand that discomfort is the key to growth. Cultivate your own ability to adapt and know that struggling well is something you’ll share with every team you’re on at Shelf. Our company stories are about thriving through real difficulty…together. Win Together - We win or lose as a team. Always. Everything you do here is connected to the rest of the organization. Part of our shared team environment demands full honesty…real candor and directness with one another. We expect you to constantly be thinking about how to support your teammates and the company, always acting in service to our shared mission and what’s best for the organization as a whole.

About Shelf Shelf builds software that helps enterprises make AI work in the real world. We care about the hard part: reliable systems, clear operational logic, and production-grade engineering that makes AI useful instead of brittle. Job Description: This role is for a senior backend engineer who can own important systems, not just implement tickets. You will take ambiguous problems, design the right backend approach, ship it, and keep it healthy in production. We want someone who is strong technically, communicates clearly, and has the judgment to make systems simpler, safer, and easier to evolve over time. This is a product engineering role with real ownership from system design through production. What You Will Own - Design and ship backend services, APIs, data flows, and background processing for production systems. - Turn vague requirements into concrete technical plans, trade-offs, and execution. - Own services after launch: reliability, observability, performance, and incident follow-through. - Make sound decisions around system boundaries, data models, interfaces, and scaling paths. - Write clear technical specs, architecture notes, and diagrams when they help the team move faster. - Work closely with product, frontend, and platform engineers to deliver end-to-end outcomes. - Improve engineering leverage with AI tooling, automation, and internal workflows rather than using AI as a gimmick. - Raise the quality bar through code review, design review, and pragmatic technical leadership. What Strong Performance Looks Like - You reliably move important backend work forward without waiting to be tightly managed. - Your systems are easier to operate and easier to change because of your design decisions. - You communicate trade-offs clearly and make the team around you more effective. - You use AI tools well: to accelerate analysis, implementation, debugging, writing, and repetitive work, while keeping a high verification bar. What We Are Looking For - Strong senior-level backend engineering experience in production systems. - Strong Python skills and the ability to design clean, maintainable backend code. - Good distributed systems judgment: concurrency, failure handling, data consistency, async work, and service boundaries. - Hands-on cloud experience in AWS, Azure, or a similar environment. - Comfort with SQL and NoSQL systems, schema design, and performance tuning. - Ability to go from problem statement to design to production rollout with real ownership. - Clear written and verbal communication. You can explain systems, trade-offs, and incidents without hiding behind jargon. - AI-native working style. You already use AI tools in your daily engineering workflow and want to keep pushing that further. Strong Plus - Experience with LLM-backed systems, search, retrieval, AI infrastructure, or data-heavy pipelines. - Working knowledge of TypeScript or the ability to contribute across the stack when needed. - Experience shaping technical direction for other engineers, even without formal management responsibility. How We Evaluate Fit We care more about ownership, systems judgment, and learning velocity than a perfect keyword match to our stack. If you are the kind of engineer who can take a messy problem and turn it into a strong production system, we want to talk. What Shelf Offers: - B2B contract. - Company Stock Options. - Hardware: MacBook Pro. - Modern technical stack. Develop open-source software. - GitHub Copilot subscription. - Access to Claude Code, OpenAI Codex, TypingMind, and MCP Servers. Why Shelf: - Our Leadership Team has deep knowledge management and AI domain expertise and enterprise SaaS background to execute this plan - We love our customers and our customers love us. Ask a Shelf customer why, and they’ll tell you it’s because of our innovative capabilities, rock-solid reliability, they truly enjoy working with our people, but most of all – it’s the improvements they see in their business KPIs. - We have raised over $60 million in funding and our investors include Tiger Global, Insight Partners, Connecticut Innovations, and others - We have high velocity growth powered by the most innovative product in our category, 3X growth for 3 years in a row - We now have over 100 employees in multiple U.S. states and European countries, and we have ambitious hiring goals over the next few months Our Values: Quality - We’re united by our focus on world‑class Quality. Quality in all things – starting with everything that leaves your desk. Everything you touch – every email, report, campaign, and piece of code – should be outstanding. Your work product should blow people away. Having people look at what you’ve done and say, “Wow.” That’s the standard here. Remember that how you do anything is how you do everything. Focus on craftsmanship—your ability to make things better. Momentum - for us means that you should know that the things you’re responsible for are moving forward. When you look around and see something that’s stalled, get it moving again. We pride ourselves on “ball movement.” When your boss or team leaves you with something, they should return to see measurable progress. Small, continuous movement is our recipe for success. Constantly look for how to make the work around you move forward. We want you to initiate solutions, ideas, and progress. Don’t wait for it to come to you—reach out and create movement. All the time. Accountability - We expect every team member to feel that they are accountable for more than anyone might normally expect. Each of us should feel real responsibility for things even at the edge of our control. We consistently share and align on expectations, give each other open and respectful feedback, and use those two drivers to ensure that every agreement we make with one another is clear and complete. Hard Work - We’re here to do something difficult together. We care intensely about the mission and we expect that from our teammates. That care means that we work hard here. Hard work comes with long hours, extra effort…and real opportunity at Shelf. Your passion for creating and sustaining output is a part of our DNA. Support each other, cheer each other on, drive the mission forward. Great teams sustain intense effort together to win. Learning Agility - We’re innovating in one of the fastest‑moving spaces in history at a time of accelerating global change. That’s incredibly exciting and requires each of us to commit fully to learning each and every day so that we can be the best at what we do. None of us know everything. All of us can learn anything. Staying open and constantly curious is a key success driver at Shelf. It also requires humility. We prize people who are consistently humble and open to making mistakes and growing from them. Recognize also that learning itself is a skill…we need you to be really good at it. Keep dialing in your own understanding about how you learn best and push yourself to keep growing. Adapt and Thrive - Overcoming challenges lives deep in our DNA. We have a proud history of understanding and living the reality that obstacles are our opportunities…they’re the key to our success. Change is a constant in our business and fighting change is counterproductive. We need you to be good at being uncomfortable and understand that discomfort is the key to growth. Cultivate your own ability to adapt and know that struggling well is something you’ll share with every team you’re on at Shelf. Our company stories are about thriving through real difficulty…together. Win Together - We win or lose as a team. Always. Everything you do here is connected to the rest of the organization. Part of our shared team environment demands full honesty…real candor and directness with one another. We expect you to constantly be thinking about how to support your teammates and the company, always acting in service to our shared mission and what’s best for the organization as a whole.

• Drive technical strategy and roadmap. • Lead end-to-end delivery of large, cross-functional projects. • Own architecture, reliability, performance and cost for critical systems. • Define SLOs/SLIs and lead incident response. • Improve observability, automation and operational readiness. • Align stakeholders and remove blockers. • Mentor and grow engineering talent. • Represent engineering internally and externally.

Senior Back-End Developer Location: United States Job Description: Description & Requirements Maximus is seeking a Senior Back-End Developer to join our team! The Senior Back-End Developer provides subject matter proficiency for work described in the task. Responsible for providing analytical skills to support process improvement, specialized studies, and definition of requirements. Typical duties include analysis, planning, developing requirements documents, building functional models, developing procedures, developing functional architectures, and other related management and technical duties. Requires expertise in specialty area. This position is contingent upon award of the contract. This position requires an active Secret Security clearance or higher. Although this position may be performed remotely, occasional paid travel may be required to the client location in either San Antonio, Texas or Baltimore, Maryland. Maximus TCS (Technology and Consulting Services) Internal Job Profile Code: TCS203, T5, Band 8 Job-Specific Essential Duties and Responsibilities: - Provides subject matter proficiency for work described in the task. - Responsible for providing analytical skills to support process improvement, specialized studies, and definition of requirements. - Typical duties include analysis, planning, developing requirements documents, building functional models, developing procedures, developing functional architectures, and other related management and technical duties. - Requires expertise in specialty areas. - Shall perform engineering tasks for back-end design and development efforts, including but not limited to, developing back-end architectures to support current and new system capabilities and integrations, RESTful API development and modification, database management, and data model development and optimization. Job-Specific Minimum Requirements: - An active Secret clearance or higher is required. - 10 years of overall experience in the functional area. - A bachelor's degree in related field required. - A master's degree may substitute for 2 years of experience. - 10 years of software development experience in object-oriented and scripted languages (see section 4.2) with the ability to apply several tool suites related to DevSecOps, microservices and containers. - 5 years of recent and relevant experience performing back-end web design and development. - Demonstrated experience in preparing, conducting, and documenting various systems tests and results to verify system operability and compliance with project standards and requirements. - Demonstrated experience in relational databases, RESTful API development and integration. - 5 years experience in Python and PostgreSQL. - 5 years of experience with bug tracking software (e.g., Jira). - 5 years of experience testing web-based applications. - 5 years of experience leading software development programs or projects. - Practical experience developing in a cloud environment. - 3 years of experience with the following: AWS Infrastructure, Kubernetes, and RedHat Linux. - 10 years of experience with Relational databases with at least 5 years of PostgreSQL applied experience. - 5 years of experience with at least five (5) of the following: - BASH - Spring - Ansible - JUnit5 - Nexus Repository - Maven Preferred Skills and Qualifications: - Experience with integrating data from unclassified to classified application deployments. - 5 years of experience with DoD software development. - Experience using Agile Test-Driven development. - Experience integrating into DoD DevSecOps environments. - 5 years experience with CI/CD software development. #techjobs #clearance #veteransPage #DODAIRFORCE-CICD #LI-remote Minimum Requirements TCS203, T5, Band 8 EEO Statement Maximus is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information and other legally protected characteristics. Pay Transparency Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. Annual salary is just one component of Maximus's total compensation package. Other rewards may include short- and long-term incentives as well as program-specific awards. Additionally, Maximus provides a variety of benefits to employees, including health insurance coverage, life and disability insurance, a retirement savings plan, paid holidays and paid time off. Compensation ranges may differ based on contract value but will be commensurate with job duties and relevant work experience. An applicant's salary history will not be used in determining compensation. Maximus will comply with regulatory minimum wage rates and exempt salary thresholds in all instances. Accommodations Maximus provides reasonable accommodations to individuals requiring assistance during any phase of the employment process due to a disability, medical condition, or physical or mental impairment. If you require assistance at any stage of the employment process-including accessing job postings, completing assessments, or participating in interviews,-please contact People Operations at applicantaccom@maximus.com.