# .NET / C# Developer - Senior - #879 at Allen Integrated Solutions

> United States · Senior · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Aallenintegratedsolutions%3A7850007003 (read 2026-11-09).

## Facts (observed)

- Company: [Allen Integrated Solutions](https://alderhq.app/companies/allen-integrated-solutions)
- Location text: Fort Belvoir, Virginia, United States; Fort Belvoir, VA
- Where it can be done from (inferred): United States (evidence: "Location: Fort Belvoir, Virginia, United States; Fort Belvoir, VA")
- Posted: 2026-08-12 (88 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-07
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://job-boards.greenhouse.io/allenintegratedsolutions/jobs/7850007003
- Skills listed (inferred): TypeScript, C#/.NET, SQL, Testing

## Pay and sponsorship

- Posted pay: not posted
- Market band for similar posted roles (United States, n 3913): p25 $160k, median $183k, p75 $210k

## Description (the employer's text)

### .NET / C# Developer - Senior - #879

Location: Fort Belvoir, VA

TS/SCI w/CI Poly REQUIRED

### Experience

- Eight years of experience in .NET Development (including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development).
- Five years of experience with Software Development Life Cycle Process (SDLC).
- Five years of experience with software development Unit Testing, System Testing, Functional Testing, User Acceptance Testing, or other development testing experience.
- Five years of experience in SQL database development stored procedures.
- Five years of experience mentoring junior personnel on proper practices and procedures.
- Five years of experience documenting software defects using a bug tracking system and reporting defects to software developers and project managers.
### Certifications

- TS/SCI clearance with SBI and ability to attain SI, TK, G, HCS, and NATO Secret clearance; DoD 8140.03 IAT Level II / Intermediate certification.

---
Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Aallenintegratedsolutions%3A7850007003 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.