Senior Application Developer at SOSi
Fort Belvoir, VA
$140,000–$155,000from the description
Jul 10, 2026
Fort Belvoir, VA
Jul 21, 2026
What this job asks for AI summary
A senior-level software development role supporting a government customer at Fort Belvoir, VA, focused on designing, building, and maintaining a suite of GOTS applications within an IT and compliance directorate. The work spans the full development lifecycle — from requirements analysis and architecture through testing, deployment, and performance monitoring — using .NET Core, C#, SQL, cloud platforms, and CI/CD tooling. The role also carries mentorship responsibilities for junior developers and some project coordination duties alongside the project manager.
Senior level · 5+ years · Washington-Arlington-Alexandria, DC-VA-MD-WV · Bachelor's required · Top Secret clearance · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $158,337 (middle half $126,441–$180,105). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (7)
The JD lists two overlapping experience requirements: 'a minimum of 5 years of technical supervisory experience' and '5–8+ years of professional experience in software or application development.' the overall years minimum is set to 5 to reflect the lower hard gate.
The clearance requirement states 'active in scope Top Secret, or Secret with the ability to obtain a Top Secret.' This is treated as a Top Secret gate because the role ultimately requires TS; a Secret-only candidate must be able to obtain TS.
C# and .NET are listed together in the same requirement ('C#, JavaScript, .NET, or similar') and are closely related, but they are distinct named technologies in the JD and both appear as hard-required skills. JavaScript appears in the same 'or similar' list and is treated as preferred since the list is framed as examples of 'modern programming languages and frameworks.'
Cloud platform experience (AWS, Azure, or GCP) is listed in the main qualifications block and treated as a hard gate; AWS is the primary name with Azure and GCP as stated alternatives.
DoD 8570.01-M IAT-II baseline certification (Security+, CySA+, GSEC, GICSP, CCNA-Security, CND, or SSCP) is a stated hard requirement but names no specific technology tool, so it is captured here in notes rather than as a skill entry.
GOTS application experience (ARMIS, AAO, ACOTD, FACTS, MDR, ADAMS) is listed as a required qualification but names government-specific legacy systems rather than broadly transferable technologies; captured in notes for the hiring manager's awareness.
Requires a Top Secret clearance — the cleared population is a small fraction of this occupation, so the real candidate pool is materially smaller than the estimate below, which does not model clearance.
Read the full posting
The employer publishes the full description on their own site — read it there ↗. Or sign in to read it here — it's free, and it also lets you track this application.