Backend Software Developer (TS / SCI )

Backend Software Developer C# / .NET (TS/SCI)

Location: Washington, DC

Clearance: Active Top Secret (TS / SCI )

Employment Type: Full-Time

Your Mission

Support DoD systems that protect national leadership, critical infrastructure, and federal operations. This role contributes directly to mission-critical, high-availability applications operating in secure environments.

Responsibilities

Design, develop, and maintain secure backend services using C# and .NET (.NET Core)

Build and support RESTful APIs and service-oriented architectures used across DHS/USSS systems

Implement data access layers and business logic using SQL Server or PostgreSQL

Ensure applications comply with federal security standards (e.g., secure coding, auditing, logging)

Collaborate with cleared engineers, cybersecurity teams, and government stakeholders

Participate in system integration, testing, deployment, and operational support in classified environments

Develop and maintain technical documentation required for government systems

Required Qualifications

Active Top Secret/ SCI clearance at time of hire

5+ years of experience developing backend applications with C# and .NET

Experience building secure APIs and enterprise backend systems

Familiarity with working in classified or regulated federal environments

Ability to work onsite in Washington, DC

Preferred Qualifications

Experience supporting DoD or Law Enforcement programs

Cloud experience in AWS GovCloud or Azure Government

Familiarity with CI/CD pipelines, DevSecOps, and containerized deployments

Experience with high-availability or mission-critical systems

Salary Range: 160-190

Benefits

At Aperio Global, we understand the value of investing in our most important asset—our employees. That's why we have crafted a comprehensive benefits package designed to help you make the best decision for yourself, your family and your lifestyle. For additional details, contact our talent acquisition team.

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k, IRA)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off (Vacation, Sick & Public Holidays)
• Short Term & Long Term Disability
• (and much more)

Aperio Global is committed to providing equal employment opportunities (EEO) to all employees and applicants. Employment decisions are made without discrimination or harassment, in accordance with applicable federal, state, and local laws. We adhere to all legal requirements prohibiting discrimination based on race, color, religion, sex, national origin, age, disability, genetic information, veteran status, or any other characteristic protected by law.