Senior Software Developer III
Eliassen GroupRole Overview
Eliassen Group is hiring a Senior Software Developer III. This is a full-time role in Washington. Part of Eliassen Group's Security hiring. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job Description
Description
Onsite in Washington, DC
The organization seeks a Sr. Software Developer III to design, build, and deliver secure, reliable enterprise software for a mission-critical federal environment. The role requires deep expertise in C#, .NET, and modern web frameworks, along with strong knowledge of secure coding, CI/CD, and containerization. You will troubleshoot production issues, modernize applications, and communicate solutions to diverse stakeholders. Your contributions will support national-level operations with a focus on security, resilience, and operational excellence.
This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.
Salary: $184,000 - $225,000/ yr. w2
Responsibilities
- Troubleshoot and resolve production issues in a timely and effective manner.
- Work as part of a collaborative, high-performing team delivering technical solutions for mission-critical federal government systems.
- Support O&M and design, develop, and modernize custom enterprise applications.
- Apply secure coding practices across all phases of development.
- Participate in code reviews and Agile ceremonies including planning, stand-ups, and retrospectives.
- Support and contribute to CI/CD pipelines and automated deployments.
- Communicate technical decisions and solutions clearly to both technical and non-technical stakeholders.
- Establish and maintain a high level of customer trust and confidence through technical expertise and professionalism.
- Use creativity and innovation to deliver solutions that meet customer and mission needs.
Experience Requirements:
- Active Top Secret with current or previously held SCI access.
- Certification meeting DoD 8140 such as Security+ or higher.
- Azure Developer Associate, AWS Developer Associate, or recent and relevant software development certification.
- 10+ years of professional software development experience building, testing, and maintaining enterprise applications in mission-critical environments.
- Expertise in C#, .NET, .NET Framework, Entity Framework, and development using ASP.NET including WebForms, MVC, and REST APIs.
- Front-end experience with TypeScript, JavaScript, HTML, CSS, Node.js, and Angular and/or React.
- Back-end experience with database development and administration including SQL Server and T-SQL.
- Experience with source code management tools such as Azure DevOps, GitLab, or GitHub, CI/CD pipelines, and containerization using Docker.
- Strong understanding of Windows Server, PowerShell scripting, IIS hosting, Kerberos, and OIDC authentication.
- Ability to contribute immediately with minimal ramp-up in a dynamic, mission-critical environment.
Education Requirements:
- Bachelor’s degree in Computer Science or Software Engineering preferred; relevant experience may substitute.
- Security+ certification or higher.
- Azure Developer Associate certification.
- AWS Developer Associate certification.
Frequently Asked Questions
How do I apply for the Senior Software Developer III position at Eliassen Group?
Use the Apply button above to submit your application directly to Eliassen Group. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Senior Software Developer III position at Eliassen Group located?
This position is based in Washington. Eliassen Group has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Senior Software Developer III at Eliassen Group earn?
Eliassen Group has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Senior Software Developer III role at Eliassen Group posted?
This role was posted on April 16, 2026 (60 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Senior Software Developer III role at Eliassen Group require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Eliassen Group lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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