Full-time

Sr. C# Developer

Posted by System One • Washington, DC, United States

📍 Washington, DC 🕒 February 28, 2026

About the Role

Job Title: Sr. Software Developer (C#/ .NET)
Location: Washington, DC 20036 (onsite)
Compensation: $73.50 - $90.00 W2 hourly
Security Clearance: Active Public Trust

System One is hiring a Senior C# Software Developer on the ESA V program. ESA V is an IT applications and infrastructure services program supporting several customers within the Department of Justice (DOJ). The program provides a range of IT services, including software application support, enterprise infrastructure support, service desk, ITSM, deskside support, workstation engineering and maintenance, telecommunications and mobility engineering services, managed print services, Active Directory services, and video conferencing. The ideal candidate will be personable and articulate and will focus on making sure that the customer’s needs are met quickly and effectively. The successful candidate will be a self-starter who can work with limited supervision. Excellent communication skills are required to e...

Ready to Apply?

Submit your application today and take the next step in your career journey with System One.

Apply Now