Full Stack Developer

Who We Are

Sellers & Associates, LLC (S&A) is a Veteran Owned Small Business (VOSB) that provides effective and affordable Programmatic and Engineering Support Services and Solutions to our Government and Commercial Clients. We work directly with our clients taking the time to understand their culture and requirements designing a custom solution tailored to meet their unique needs at an affordable price without sacrificing quality.

Our specialties include Program/Engineering Management, Training/Training Technology, Technology/Product Development Strategy and Analysis, Project Management (Cost, Schedule, Scope & Quality), and Strategic Planning applied within our clients' unique domains and context.

We have Medical, Dental, Vision, 401k with company match. Long/Short Term Disability and Life Insurance. 25 days of PTO per year. Employees may choose to work or take PTO on Federal Holidays (pending contract requirements). We also offer a TRICARE Supplement Insurance Package as well as Tuition Reimbursement up to $5,250 per year for areas of study relevant to employee position responsibilities and opportunities for professional growth.

Full Stack Developer

Arlington, VA US (Primary)

Secret

We are seeking a versatile and detail-oriented Full Stack Software Developer to join our team in building secure, scalable applications for federal and DoD customers.

This will be a full‑time role supporting Goblyn Werx, the Technology Development unit of Sellers & Associates, LLC. The position requires a hands‑on developer with strong quality assurance instincts and the ability to work across the full technology stack, including front‑end, back‑end, databases, and cloud infrastructure.

The ideal candidate will have experience developing secure applications in compliance‑focused environments, a passion for writing clean and testable code, and a proactive approach to quality throughout the software development lifecycle. In addition to strong coding skills, this role also requires experience designing and integrating Commercial Off‑The‑Shelf (COTS) low‑code platforms such as Power BI, Power Apps, Dataverse
, and other tools within the Microsoft Power Platform to deliver efficient and user‑friendly solutions.

Familiarity with federal Risk Management Framework (RMF) processes or experience working within DoD environments is highly preferred.

• Design, develop, and deploy secure and scalable applications using modern full‑stack technologies.
• Extend low‑code apps with custom code when needed (front‑end, back‑end, APIs) to meet mission‑specific requirements.
• Integrate low‑code systems into secure government environments (enterprise systems, on‑prem databases, and cloud services).
• Work with customers to gather and analyze requirements, design wireframes, build prototypes, and implement solutions.
• Deliver features across front‑end interfaces, server‑side logic, APIs, databases, and cloud infrastructure.
• Write clear, maintainable, and well‑documented code with a focus on testability and code quality
  .
• Build and execute test plans, unit tests, and integration tests to ensure functional reliability and system integrity.
• Conduct QA tasks such as test case development, regression testing, and bug resolution prior to deployment.
• Integrate and manage databases (e.g., SQL Server, MySQL, Mongo
  
  DB, Redis, Dataverse) and ensure data integrity.
• Consume and develop RESTful APIs and integrate with cloud platforms such as AWS
  .
• Use Git version control to manage code collaboration and maintain clean project histories.
• Collaborate with cross‑functional teams to support secure, functional, and intuitive applications.

• Active Secret clearance required.
• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field is preferred. A minimum of 10 years of total, relevant professional experience may be substituted in lieu of a degree.
• 6‑8 years of hands‑on full‑stack development experience.

• Strong understanding of software…