Software Engineer - Build High-Impact, Secure Systems

CNSS • National Security Systems; Langley Park (MD); On-site; USD 105,000 - 193,000; Full time

Job summary

CNSS • National Security Systems in Maryland seeks experienced Software Engineers to advance high-impact systems. You will work with COBOL, C/C++, Java, Python, AWS, Docker, Kubernetes, React, and secure cloud platforms across teams. Minimum qualification: a CS or Software Engineering degree; strong problem‑solving and collaboration skills; U.S.

citizenship and eligibility for security clearance. This is a demanding, mission‑focused role with opportunities for growth.

Qualifications

• Degree concentration in CS areas required.
• Experience in software development lifecycle.
• Background in mathematics and algorithms advantageous.
• Security-focused mindset and collaboration skills.

Responsibilities

• Develop and enhance high-impact software systems across domains.
• Collaborate across teams to implement secure, scalable solutions.
• Follow CI/CD practices and modern development methodologies.

Skills

Strong mathematical background

Data structures & algorithms

Proficiency in C/C++, Python, Java

Cryptography knowledge

Security protocols TLS/SSL

HSMs and secure cloud platforms

SIEM / IDS / vulnerability tools

Cryptographic libraries / APIs

Teamwork

Leadership

Intelligence Community experience

Education

Bachelor's degree in Computer Science or Software Engineering

Master's degree in CS or related field

Doctoral degree in CS or related field

Associate's degree with related experience

Tools

Docker

AWS

GitLab

Linux

Job description

CNSS • National Security Systems in Maryland seeks experienced Software Engineers to advance high-impact systems. You will work with COBOL, C/C++, Java, Python, AWS, Docker, Kubernetes, React, and secure cloud platforms across teams. Minimum qualification: a CS or Software Engineering degree; strong problem‑solving and collaboration skills; U.S.

citizenship and eligibility for security clearance. This is a demanding, mission‑focused role with opportunities for growth.