Sr. Software Engineer - Secret Clearance

Addison Group; Washington (District of Columbia); On-site; USD 120,000 - 160,000; Full time

Job summary

A leading company is seeking a Senior Software Engineer with Secret Clearance to lead the design and development of critical software for the Defense Information Systems Agency. The role involves cloud migration, cybersecurity hardening, and mentoring junior developers. Candidates should have extensive experience in software engineering, particularly with DoD IT systems, and a strong background in C#, Java, and AWS. This full-time position offers opportunities for technical innovation and collaboration with various stakeholders.

Benefits

Medical insurance

Vision insurance

401(k)

Qualifications

• 8+ years of software engineering experience with DoD IT system development expertise.
• Proven ability to lead development teams and mentor engineers.

Responsibilities

• Lead the design, development, and sustainment of Spectrum XXI software.
• Implement Zero Trust Architecture and DoD DevSecOps best practices.
• Oversee System Integration Testing and User Acceptance Testing.

Skills

C#

Java

Python

AWS

DevSecOps

Education

Security+

AWS Certified DevOps Engineer

CISSP

Tools

Docker

Kubernetes

GitLab CI/CD

SonarQube

Job description

Sr. Software Engineer - Secret Clearance

Sr. Software Engineer - Secret Clearance

4 days ago Be among the first 25 applicants

Get AI-powered advice on this job and more exclusive features.

• Experience: 8+ years of software engineering experience, with DoD IT system development expertise.
• Clearance Requirement: Secret (TS Preferred).
• Certifications Preferred: Security+, AWS Certified DevOps Engineer, CISSP, DoD 8570.01-M IAT Level III, or similar
• Strong background in C#, .NET, Java, Python, AWS, and DevSecOps methodologies.
• Experience with cloud-based architecture, containerized applications (Docker/Kubernetes), and Zero Trust security principles.
• Advanced knowledge of DoD cybersecurity requirements, including DISA STIGs and RMF compliance.
• Proven ability to lead development teams, mentor engineers, and drive technical innovation.

Role Summary:

The Senior Software Engineer is responsible for leading the design, development, and sustainment of Spectrum XXI (SXXI) software, ensuring compliance with DoD mission-critical requirements at the Defense Information Systems Agency (DISA). This role supports cloud migration, cybersecurity hardening, and DevSecOps pipelines, while integrating advanced automation and interoperability solutions for DISA, PEO Spectrum, and NTIA.

Contract-Specific Responsibilities:

Software Development & Architecture

• Lead development of SXXI v6 enhancements, modernizing legacy components into cloud-native microservices.
• Design, implement, and optimize scalable database architectures, including schema design and data modeling, to support application needs.
• Design and maintain data models for spectrum frequency allocation and NTIA transaction processing.
• Implement Zero Trust Architecture (NIST 800-207) and DoD DevSecOps best practices.
• Develop automated machine-to-machine communication interfaces for DoD and coalition partner spectrum systems.

Software Integration & Testing

• Lead System Integration Testing (SIT), User Acceptance Testing (UAT), and Performance Testing to validate software performance under operational loads.
• Oversee CI/CD pipeline optimization, integrating security scanning tools within GitLab CI/CD, SonarQube, and AWS Lambda.
• Direct software sustainment efforts to address security patches, bug fixes, and IAVA compliance requirements.

Cybersecurity & Compliance

• Ensure all software updates meet DoD RMF and DISA STIG compliance requirements.
• Lead software security hardening efforts, incorporating encryption, access control, and secure authentication mechanisms.
• Develop, update, and maintain comprehensive technical documentation, including user manuals, system documentation, and training materials, to ensure clarity and usability.

Mentorship & Stakeholder Engagement

• Guide junior and mid-level developers, conducting code reviews, architecture discussions, and Agile sprint planning.
• Collaborate with DISA, NTIA, and coalition partners to define interoperability requirements for SXXI integrations.
• Provide technical briefings, support, and recommendations to program leadership, ensuring software aligns with DoD’s evolving mission needs.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology

• Industries

  Defense and Space Manufacturing and Staffing and Recruiting

Referrals increase your chances of interviewing at Addison Group by 2x

Inferred from the description for this job

Medical insurance

Vision insurance

401(k)

Get notified about new Software Engineer jobs in Washington, DC.

Junior Full Stack Software Engineer (JAVA)

Junior Software Developer Engineer - Fairfax

Fairfax, VA $110,000.00-$140,000.00 3 months ago

Washington DC-Baltimore Area 2 months ago

Columbia, MD $80,000.00-$140,000.00 2 months ago

Software Engineer- Entry Level - Must Have Poly

Laurel, MD $50,000.00-$120,000.00 11 months ago

Maryland, United States $50,000.00-$120,000.00 3 months ago

Columbia, MD $50,000.00-$120,000.00 11 months ago

Washington, DC $150,000.00-$230,000.00 1 year ago

Bethesda, MD $91,825.00-$125,000.00 3 months ago

Front-End Software Engineer (Web Developer)

Washington, DC $95,000.00-$125,000.00 2 months ago

Front End Software Engineer, Subscriptions

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.