Senior C++ Engineer - TS Clearance, High-Perf Systems

Transformational Security, LLC; Columbia (MD); On-site; USD 140,000 - 190,000; Full time

Job summary

Transformational Security, LLC in Columbia, MD is seeking a Senior C++ Software Engineer to contribute across multiple product codebases supporting in-place monitoring, electronic-security, and related mission systems. This is an individual-contributor engineering role: you will take technical direction from our architect and apply strong fundamentals to deliver correct, robust, high-performance code across new development and legacy maintenance.

U.S. citizenship required.

Qualifications

• Deep understanding of C and C++ fundamentals—language semantics, memory model, and runtime behavior.
• Solid grounding in computing principles: algorithms, data structures, and systems thinking.
• Multithreading and concurrent programming experience, including safe object lifecycle management.
• Proven ability to analyze, navigate, and extend complex codebases, including legacy code.
• Strong problem-solving and debugging skills on Linux server environments.
• Proficiency with Git and willingness to adopt team workflows.
• Hands-on experience with CI/CD tooling: GitLab, Docker, Linux shell scripting, and build automation (Make; CMake familiarity is a plus).
• Automated testing experience; Google Test (gtest) for C++.
• Strong communication and collaboration skills.
• U.S. citizenship and ability to obtain a Top Secret security clearance.

Responsibilities

• Design, implement, and maintain high-performance C++ applications and libraries across assigned products.
• Develop new features and maintain legacy code in existing codebases.
• Apply strong correctness, robustness, and performance discipline under technical direction from the project architect.
• Work with multithreading, concurrent programming, and object lifecycle management in production systems.
• Build and operate within our CI/CD pipeline: Git, GitLab, Docker, Linux, scripting, and Make-based builds.
• Participate in code reviews as a contributor; incorporate feedback and raise quality through collaboration.
• Use AI-assisted development tools effectively - frontier LLMs, agentic coding workflows, and MCP-integrated tooling.

Skills

C/C++ fundamentals

Multithreading

Linux debugging

Git

CI/CD tooling

Automated testing (gtest)

Communication

Problem solving

Google Test (gtest)

Tools

Docker

GitLab

Make

CMake

Job description

Transformational Security, LLC in Columbia, MD is seeking a Senior C++ Software Engineer to contribute across multiple product codebases supporting in-place monitoring, electronic-security, and related mission systems. This is an individual-contributor engineering role: you will take technical direction from our architect and apply strong fundamentals to deliver correct, robust, high-performance code across new development and legacy maintenance.

U.S. citizenship required.