Senior Software Developer
Bellevue, WA
Experience: 0
Category: Engineering
Contractor Work Model: Remote
Brand: System One
Compensation Range: 56.00 - 95.00 Per Hour
Job ID: 347867
Date Posted: 05/07/2026
Shortcut: http://jobs.systemone.com/UboSMJ
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.
Ref: #161-Managed Staffing Charlotte
-
Senior Safety Verification and Validation Engineer
Bellevue, Washington
Job Title: Senior Safety Verification and Validation Engineer Type: Contract (12-months) Contractor Work Model: Remote About the Role: As a Senior Safety V&V Engineer, you will be instrumental in verifying and validating safety assessment models and so...
Date Posted: 03/09/2026 Recommended
-
Nuclear Engineer V, Mechanical
Perry, Ohio
Job Title: Nuclear Engineer V – Mechanical Type: Long-Term Contract Pay Rate: $115.00/hour Per Diem: $178/day Location: Nuclear facilities in Ohio Work Model: Remote then Onsite Perry Plant – Perry, OH Davis-Besse Plant – Oak Harbor, OH Beaver Valley P...
Date Posted: 05/05/2026 Recommended
-
Senior Civil Structural Engineer
Downers Grove, IL
Job Title: Senior Structural Engineer Location: Downers Grove, IL Type: Contract Compensation: $70/hr (DOE) Contractor Work Model: Onsite Hours: 40 hours/week System One is e are seeking a high-caliber Experienced Structural Engineer to join our Projec...
Date Posted: 04/23/2026 Recommended
-
Quality Assurance Engineer
Chattanooga, TN
Job Title: Quality Assurance Engineer Location: Chattanooga, TN Type: Direct Hire Work Model: Onsite Responsibilities: Support the implementation and execution of quality assurance program across nuclear, DoE, DoD, and aerospace projects. Review custom...
Date Posted: 04/06/2026 Recommended
-
Sr Engineering Technician - Electrical 3D Drafter
Chicago, Illinois
Job Title: Sr Engineering Technician - Electrical 3D Drafter Location: Chicago, IL 60606 Type: Contract-to-hire Compensation: $45 - $60/hr Contractor Work Model: Onsite Hours: 40.0 Security Clearance: Not specified in the provided data Overview System ...
Date Posted: 05/06/2026 Recommended
-
Sr Engineering Technician - Electrical 3D Drafter
Houston, Texas
Job Title: Sr Engineering Technician - Electrical 3D Drafter Location: Houston, TX 77079 Type: Contract-to-hire Compensation: $45 - $60/hr Contractor Work Model: Onsite Hours: 40.0 Security Clearance: Not specified in the provided data Overview System ...
Date Posted: 05/06/2026 Recommended
-
Civil Intern Engineer
Tulsa, Oklahoma
Civil Intern Engineer System One is partnering with an architectural firm seeking a Civil Intern Engineer here in the Tulsa area. Responsibilities include: Assist in civil engineering site development projects, gaining hands-on experience in the field ...
Date Posted: 04/02/2026 Recommended
-
Staff Engineering Designer - Bentley Microstation
Leawood, KS
Job Title: Staff Engineering Designer - Bentley Microstation Location: Leawood, KS Type: Contract to Permanent Contractor Work Model: Onsite – onsite Hours: 40.0 Position Overview System One LLC is seeking a Staff Engineering Technician to support its ...
Date Posted: 04/21/2026 Recommended
-
Electrical Engineer
Cypress, TX
Job Title: Electrical Engineer Location: Houston, Texas Type: Direct Hire Compensation: $130,000 - $170,000 Contractor Work Model: Hybrid Hours: Monday - Friday, 8-5 Company Overview A growing engineering and consulting firm is expanding their presence...
Date Posted: 04/29/2026 Recommended
-
Production Worker
Colonial Heights, VA
Job Title: Production Worker Location: Colonial Heights, VA Overview The Production Worker is responsible for operating and monitoring manufacturing equipment, inspecting products to ensure quality standards, and maintaining a safe and efficient work e...
Date Posted: 04/29/2026 Recommended
-
Avionics Inspector - Quality
Owasso, OK
System One is working with a client to find an Avionics Inspector- Quality. 1st & 2nd Shift Responsibilities Perform incoming, in-process, and final inspections on avionics components and instruments to ensure compliance with approved data, technical m...
Date Posted: 05/06/2026 Recommended
-
Core Thermal Hydraulics Engineer
Bellevue, WA
Job Title: Core Thermal Hydraulics Engineer Location: Bellevue, WA, United States Type: Contract Compensation: $69.00 - $115.00 per hour Contractor Work Model: Remote Hours: 40.0 hours per week Responsibilities Perform thermal-hydraulics analysis using...
Date Posted: 05/01/2026 Recommended
-
Mechanical Engineer
Richland, Washington
Job Title: Mechanical Engineer Location: Richland, Washington Type: Contract Contractor Work Model: Onsite – onsite Hours: 40.0 Overview Responsibilities Create, modify, and update 2D drawings and 3D models using AutoCAD and SolidWorks Assist in mechan...
Date Posted: 05/05/2026 Recommended
-
Lead Engineering Designer - Bentley MicroStation
Leawood, KS
Job Title: Lead Engineering Designer - Bentley MicroStation Location: Leawood, KS, United States Type: Contract Contractor Work Model: Onsite – onsite Hours: 40.0 System One LLC is seeking a Lead Engineering Technician to support Advanced Power Generat...
Date Posted: 04/21/2026 Recommended
-
Refueling & Remote Handling Engineer 4
Corvallis, OR
Job Title: Refueling & Remote Handling Engineer 4 Type: Direct Hire Work Model: Remote (travel to client sites as needed) Overview Step into a fully remote, direct-hire opportunity as a Refueling & Remote Handling Engineer (Level 4) supporting advanced...
Date Posted: 05/07/2026 Recommended
-
I&C Engineer
Idaho Falls, ID
Job Title: I&C Engineer Location: Idaho Falls, ID Type: Contract Contractor Work Model: Onsite Hours: 40.0 Responsibilities Design, develop, install, and maintain equipment required to monitor and control engineering systems in nuclear facilities. Appl...
Date Posted: 05/05/2026 Recommended
-
Supplier Manufacturing Engineer
Cheswick, PA
System One is seeking a Supplier Manufacturing Engineer based in the Greater Chicago area. This is a home-based role with frequent local travel to supplier sites to provide hands-on manufacturing engineering support, drive process improvements, and res...
Date Posted: 05/06/2026 Recommended
-
Senior Electrical Engineer
Downers Grove, IL
Job Title: Senior Electrical Engineer Location: Downers Grove, IL Type: Contract (Contract to Direct Possible) Duration: 6 months Compensation: $67.40 - $82 (Flexibility DOE) Contractor Work Model: Onsite Hours: 40 hours/week (Monday - Thursday 7:30am ...
Date Posted: 02/24/2026 Recommended
-
Manufacturing Engineers
Cheswick, PA
Job Title: Manufacturing Engineers Company: System One Locations: Albany, NY | New York, NY | Philadelphia, PA Work Model Remote - Travel within 2-3 hours of your home base Position Type: Contract to Perm Position Overview System One is seeking a Suppl...
Date Posted: 04/29/2026 Recommended
-
Supplier Manufacturing Engineer - Kansas City MO
Cheswick, PA
System One is seeking a Supplier Manufacturing Engineer to support critical supplier performance and manufacturing execution. This role is highly hands-on and focused on improving supplier processes, resolving manufacturing challenges, and driving on-t...
Date Posted: 03/26/2026 Recommended
-
Sr MEP PM (Stillwater)
Stillwater, Oklahoma
MEP Manager Location: Stillwater Type: Direct Hire | Onsite Mission Critical & Data Center experience Overview The MEP Manager oversees mechanical and electrical field operations to ensure projects are completed safely, on time, and within budget. This...
Date Posted: 05/04/2026 Recommended
-
Senior Designers (Vapor Controls)
Tulsa, Oklahoma
Senior Designer (Vapor Controls) Responsibilities Design and draft packaged, skid-mounted vapor control equipment using Plant 3D (Plant Pro) and Autodesk Inventor Collaborate with cross-functional project teams to develop accurate and efficient control...
Date Posted: 04/07/2026 Recommended
-
Project Engineer - Industrial/Structural
Richland, Washington
Job Title: Project Engineer - Industrial/Structural Location: Richland, Washington Type: Contract To Hire Compensation: $55.00 - 75.00 hourly Contractor Work Model: Onsite Hours: Mon-Fri 8am-5pm Project Engineer - Industrial/Structural In a world of po...
Date Posted: 03/26/2026 Recommended
-
Optical Assembly Technician
Pine Brook, New Jersey
Job Title: Optical Assembly Technician Location: Pine Brook, NJ Type: Contract-to-Hire Compensation: $25/hour Contractor Work Model: Onsite Hours: 2nd Shift (3PM to 11PM) OPTICAL ASSEMBLY TECHNICIAN SUMMARY: We are seeking an Optical Technician to supp...
Date Posted: 04/30/2026 Recommended
-
Electrical Estimator
Tulsa, Oklahoma
Job Title: Electrical Estimator Location: Tulsa, Oklahoma Responsibilities Prepare and develop electrical project estimates for commercial projects, including hospitals and other large-scale developments. Utilize Conest software or other estimating too...
Date Posted: 04/23/2026 Recommended
-
Assoc Engineering Technician (Water) - Civil 3D Designer Drafter
Orlando, Florida
Associate Engineering Technician – Civil (Water) Location: Orlando, Florida Work Schedule: Onsite – 5 days per week Employment Type: Contract-to-Hire Industry: Water & Infrastructure Position Overview Our client is seeking a Civil Associate Engineering...
Date Posted: 04/27/2026 Recommended
-
Robotic Welding Technician 2nd Shift
Lebanon, Ohio
Job Title: Robotic Welding Technician- 2nd Shift Location: Lebanon, Ohio Contractor Work Model: On-site Hours: 40.0 Responsibilities Program robotic systems, including material handling, welding, and Cobot units, to ensure efficient operation. Develop ...
Date Posted: 05/07/2026 Recommended
-
Manufacturing Engineer
Ruther Glen, VA
Manufacturing Engineer Ruther Glen, VA Overview The Manufacturing Engineer is responsible for optimizing manufacturing processes, ensuring product quality, and improving efficiency. This role supports BOM maintenance, equipment procurement, and the des...
Date Posted: 02/19/2026 Recommended
-
Senior Project Engineer
Baton Rouge, Louisiana
Job Title: Senior Project Engineer Location: Baton Rouge, Louisiana Type: Direct Hire Compensation: $120,000.00 to $125,000.00 + Bonus Contractor 90/80 Schedule Core Responsibilities Technical Specifications: Determine requirements and select specializ...
Date Posted: 05/05/2026 Recommended
-
Senior Engineering Project Manager
Charlotte, NC
Job Title: Senior Engineering Project Manager Location: Charlotte, NC Type: Direct Compensation: Depending on experience Contractor Work Model: Onsite Hours: 5 – 8 hours day System One is e are seeking a high-caliber Senior Engineering Project Manager ...
Date Posted: 03/26/2026 Recommended