Modernization Engineer with Security Clearance

Position requires US Citizenship and a Secret security clearance! We're seeking an experienced Modernization Software Engineer that focuses on integrating cutting-edge technology with legacy systems to enhance operational capabilities. The ideal candidate has experience with large legacy systems, a passion for modernization, and thrives in small, disconnected team environments. Adaptability to new technologies is a must. Required Skills: • Proficiency in low-level languages C/C++, Rust & Zig • Proficiency in high-level languages Python & TypeScript languages • Strong knowledge of data structures, algorithms, design patterns, functional and object-oriented programming, complexity analysis, memory/thread safety, and advanced debugging. • Experience with code quality tools, type checking, linting, unit/integration/end-to-end testing, profiling, benchmarking, and stress testing. • Expertise in version control (monorepos), documentation, CI/CD pipelines, code reviews, package and artifact management (Cargo, PyPI, NPM), build systems, containerization (Docker), and cloud platforms (AWS preferred, Azure/GCP a plus). Preferred Skills • Large Language Models (LLMs): Experience with LLM inference servers, major frameworks (LangChain, LlamaIndex), RAG techniques, vector databases, prompt engineering, token optimization, and model quantization. • System-Level Knowledge: Strong understanding of Linux, process/memory management, file systems, networking, compiler optimizations, libraries, system calls, and CPU cache optimization. Required Qualifications: • US Citizenship • Secret Clearance (ability to eventually obtain a Top Secret) • B.S. in computer Science or related degree preferred • 4 years of experience in software engineering (with emphasis on coding) • Experience using C/C++, Rust, Zig, Python and TypeScript

Location: Manassas, Virginia, US

Posted Date: 8/21/2025