[Job Radar](https://jobradar.live/) / [Jobs](https://jobradar.live/ilanlar) / Software Developer (Senior)

Active
On-site
Chantilly, VA, United States
Posted · 30.09.2026
SmartRecruiters (US)

# Software Developer (Senior)

SOSi

This position is contingent upon award of contract SOSi is seeking a Software Developer to support our government customer in Chantilly, VA. Essential Job Duties Lead design and development of complex software solutions writing clean, efficient code. Mentor junior developers. Conduct architectural reviews. Integrate COTS, GOTS, and Open-Source components. Drive continuous improvement in development processes. Active in scope TS/SCI w/ Poly. Minimum 7+ years of relevant experience. understanding of the Sponsor's technical environment. Experience in full lifecycle software engineering. Experience moving capabilities from development through testing to production environments. Working Conditions Office environment. Working at SOSi All interested individuals will receive consideration and will not be discriminated against for any reason. Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Its capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics.

This job was verified from SmartRecruiters (US). Applications are completed on the original source.

[Apply on the original listing ↗](https://jobradar.live/ilan/6de2505c-d05e-4c76-902c-8e9f8b349276/git)

## Stop searching one by one for roles like this.

Upload your resume or enter your target roles to see your first 3 matches for free.

[Find jobs for me →](https://jobradar.live/uye/kayit)
Your resume is never shared with employers; it is processed only for matching.

Something wrong with this job?

## Similar jobs

[SOSi Jobs](https://jobradar.live/company/sosi) · [Jobs in Virginia](https://jobradar.live/jobs/virginia)
· [Software Engineer Jobs in Virginia](https://jobradar.live/jobs/virginia/software-engineer) · [Jobs by location](https://jobradar.live/jobs) · [Jobs by company](https://jobradar.live/company)

- [Senior Software Engineer](https://jobradar.live/ilan/37041874-ca9f-4c2d-843b-aefb636dcb32) Mastercard · Arlington, VA

- [Software Development Engineer - Military Veterans](https://jobradar.live/ilan/720f8689-222c-45bf-b07c-abf42b7d63c9) Amazon · Arlington, VA

- [Senior Software Developer Engineer, AWS Compliance & Security Assurance](https://jobradar.live/ilan/7419b5e8-6d68-4f5a-ad62-6d12ca6557fe) Amazon Web Services (AWS) · Herndon, VA

- [Software Developer (Expert)](https://jobradar.live/ilan/d0cccb2f-0a58-43de-8eb0-8e7ee64b467b) SOSi · Chantilly, VA, United States

- [Software Development Engineer, US Amazon Dedicated Cloud Security](https://jobradar.live/ilan/a63ff18c-f582-4276-bcab-5d5561a02303) Amazon Web Services (AWS) · Herndon, VA

- [Software Development Engineer II (UM), Bespoke Solutions](https://jobradar.live/ilan/6e7a3274-6d0f-465d-890f-419c13fbdb92) Amazon Web Services (AWS) · Herndon, VA

- [Software Development Engineer II, AWS Security](https://jobradar.live/ilan/7885af19-ea4c-491a-bb29-fb76b65a4233) Amazon Web Services (AWS) · Herndon, VA

- [Software Development Engineer II, Secure Connection Services (SCS)](https://jobradar.live/ilan/99bd4f56-fc39-4e9f-9b42-8237a66a04cc) Amazon Web Services (AWS) · Herndon, VA