Sr Software Engineer / Active TS/SCI

peraton· Information Technology
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📍 Washington, DC, USFULL TIME💰 USD 135K–216K

About this role

Responsibilities

Peraton is currently hiring a Senior Full Stack Software Engineer (O&M) to support our Operations and Maintenance (O&M) team to  

support a mission-critical enterprise application used by the federal government, ensuring reliability, security, and continuous modernization of a complex production environment.

 

Location: Washington, DC 

 

Role OverviewIn this role, you will sustain, optimize, and enhance a mature enterprise application. Your focus will be on stability, refactoring, troubleshooting, and implementing minor feature enhancements across Angular front ends and .NET Core microservices.

 

Key Responsibilities:

  • Maintain and optimize existing .NET Core microservices and ASP.NET applications for high availability and performance.
  • Troubleshoot, debug, and upgrade Angular-based Single-Page Applications (SPAs).
  • Manage and tune SQL Server databases, including repairing stored procedures and improving query performance.
  • Analyze legacy application logic to identify and resolve high-priority bugs and production incidents.
  • Apply security patches, performance improvements, and minor feature enhancements based on stakeholder needs.

 

Qualifications

Minimum Qualifications: 

  • Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
  • 10+ years of hands-on full-stack engineering experience, with emphasis on O&M or legacy system maintenance.
  • Strong back-end expertise in C#, .NET Core, ASP.NET, and reverse engineering/debugging.
  • Proven experience maintaining and refactoring Angular/TypeScript production codebases.
  • Advanced skills in SQL Server, T-SQL, and performance tuning.
  • U.S. citizenship required.
  • Active Top Secret clearance with SCI eligbility and eligible to obtain a polygraph. 

Preferred, Nice to Have Qualifications: 

  • Experience with ElasticSearch for log monitoring and troubleshooting.
  • Ability to maintain and update SQL Server Reporting Services (SSRS) reports.
  • Familiarity with Ext JS for supporting older UI components.

 

Peraton Overview

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can’t be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we’re keeping people around the world safe and secure.

Target Salary Range

$135,000 - $216,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

EEO

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.

Frequently Asked Questions

What is the salary for the Sr Software Engineer / Active TS/SCI role at peraton?
The listed salary for this Sr Software Engineer / Active TS/SCI position at peraton is USD 135K–216K. This is an FULL TIME role.
Where is the Sr Software Engineer / Active TS/SCI position at peraton located?
This Sr Software Engineer / Active TS/SCI role at peraton is based in Washington, DC, US. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Sr Software Engineer / Active TS/SCI role at peraton full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Sr Software Engineer / Active TS/SCI role in the Information Technology department at peraton.
Which team or department does the Sr Software Engineer / Active TS/SCI at peraton belong to?
This Sr Software Engineer / Active TS/SCI position is part of the Information Technology department at peraton. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Sr Software Engineer / Active TS/SCI position at peraton?
Click the "Apply Now" button on this page. You will be redirected to peraton's official application portal hosted on icims where you can submit your application directly.
When was the Sr Software Engineer / Active TS/SCI job at peraton posted?
This Sr Software Engineer / Active TS/SCI position at peraton was posted on Jul 16, 2026. Apply as soon as possible — early applications are often reviewed first.
Sr Software Engineer / Active TS/SCI
peraton · 💰 USD 135K–216K
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You'll be redirected to peraton's official application page on icims.