Senior Software Developer

System One is seeking a Senior Full-Stack Software Developer for a 6-month W2 contract to help build and maintain a mission-critical engineering data management platform. This tool is a key part of our plan to improve the world's ability to deliver data-heavy nuclear power construction projects on time and on budget. It contains a nuclear-reactor project-specific data model linking plant safety functions, requirements, scientific analyses, documentation, tests, and more—serving as a "single source of truth" that supports traceable, high-quality execution across design and construction workflows. You'll join a small, senior-leaning team (~5 developers) and work closely with engineering leadership, QA, and internal users. This role is best suited for someone who enjoys owning work end-to-end, can translate real-world user needs into clear technical solutions, and is comfortable operating in environments where software quality, verification, and process discipline matter. What you'll do + Design, implement, document, and test features based on defined requirements and real user feedback. + Improve maintainability and velocity through thoughtful refactoring and pragmatic architecture decisions. + Proactively identify priorities and drive work forward without needing every task pre-scoped. + Partner with QA and stakeholders to support verification/validation expectations and quality standards. + Diagnose performance bottlenecks (application and data layer) and deliver measurable improvements. + Support CI/build/test tooling (e.g., Jenkins) and contribute to stable release practices. + Review code, provide actionable feedback, and help mentor other developers. + Provide occasional backend data operations/support for internal teams as needed. + Help train/support internal users so the platform is adopted successfully. Tech stack (must be hands-on) +

Backend:

Python, Django, Django REST Framework, Linux +

Frontend:

JavaScript, Vue 3, Quasar (SPA) What we're looking for + 5+ years building and supporting production web applications, with deep Django experience (not just exposure). + Strong JavaScript skills and real experience delivering SPAs in a modern framework (Vue strongly preferred). + Comfort working with tests, debuggers/profilers, git workflows, and code review as a daily habit. + Ability to communicate clearly with technical and non-technical stakeholders and convert requests into implementable requirements. + A quality mindset: you care about correctness, traceability, and stable delivery—not just feature output. Nice to have + CI/CD ownership or significant contributions (Jenkins or similar). + Experience supporting Linux application/database servers. + Experience in regulated and/or audited environments (quality systems, formal V&V expectations). System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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#161-Managed Staffing Charlotte System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.