At NetSage, we are more than a government contractor—we are a mission-focused partner dedicated to advancing national security through exceptional cyber expertise. We believe our success begins with our people, which is why we invest in and care for our employees. We know that employee retention is mission continuity, and we are committed to building long-term careers where our people can grow alongside our customers' evolving missions. Our employees enjoy meaningful work, competitive compensation, outstanding benefits, and opportunities to expand their skills across multiple mission areas. To learn more about our comprehensive benefits and what it's like to build your career at NetSage, visit our Careers page. Due to the sensitive nature of the work we support, some job descriptions intentionally provide a high-level overview of the role. If you'd like to learn more about a particular opportunity, we encourage you to apply directly or connect with us through our Get In Touch page. We'd be happy to discuss how your experience aligns with our mission and explore where you can make an impact. Job Description: We are seeking a Senior Software Tool Developer to support the mission by developing advanced software tools that enhance cryptanalytic engineering and analysis. In this role, you will collaborate with mission stakeholders, researchers, and end users to translate research concepts, experimental algorithms, and software prototypes into fully functional applications suitable for operational use. The ideal candidate for this position will have strong Java development expertise and experience transitioning research algorithms or proof-of-concept software into production applications. Please consider applying if you meet the following qualifications. Required Qualifications: • TS/SCI with polygraph security clearance. • A Bachelor of Science (B.S.) degree in Computer Science or a related field and eight (8) years of relevant experience is required. Also acceptable are a Doctoral degree (PHD) and four (4) years, a Master of Science (M.S.) degree and six (6) years, or an Associate of Science (A.S.) degree and ten (10) years of experience. • Strong proficiency in Java and object-oriented software development. • Programming experience with Python, Rust, C++, and TypeScript. • Experience with Visual Studio or comparable integrated development environments. • Experience using GitLab or similar Git-based source code management. • Experience evaluating and modifying existing software applications based on technical documentation, source code, and evolving requirements. • Experience with automated testing, debugging, software configuration management, and release processes. Desired Qualifications: • Knowledge of graph representations, graph transformations, and alternative graph structures. • Experience with digital logic emulation or software-based modeling of digital systems. • Experience developing file parsers, data transformation utilities, and file generation capabilities. • Familiarity with optimization frameworks, algorithms, or computational optimization techniques.