Cyber Capabilities Developer, Principal (TS/SCI w/ Poly)

Job Description Use your deep C programming and Windows Internals expertise to solve mission‑critical technical challenges that directly support national security. At Parsons, you’ll work side‑by‑side with mission‑focused experts, building innovative capabilities that truly matter. What You’ll Be Doing Building high‑performance software in C that leverages deep Windows Internals knowledge to support a critical customer mission. Embedding with the mission team on‑site , working daily with subject matter experts in C, Windows internals, and related low‑level disciplines. Designing, implementing, testing, and refining advanced capabilities with other senior engineers to meet complex and evolving mission needs. Applying reverse engineering and/or vulnerability research skills to uncover system behaviors, identify new approaches, and prototype novel solutions. Troubleshooting and debugging at the system and kernel level , ensuring robustness, security, and performance under demanding conditions. Contributing to a culture of technical excellence by sharing knowledge, mentoring teammates, conducting design/code reviews, and continually sharpening your own skills in C, Windows internals, and low‑level engineering. What Required Skills You’ll Bring: Active TS/SCI with Polygraph (current and in‑scope). Bachelor’s degree in Software Engineering, Computer Science, or related field. 10+ years of related experience in low‑level software development. Strong, hands‑on experience with Windows internals , such as: Advanced proficiency in C programming , with a track record of building software that is: What Desired Skills You’ll Bring: Expert‑level reverse engineering experience , including tools, techniques, and methodologies used in low‑level analysis. Hypervisor experience , including design and/or development of hypervisors or virtualization‑related components. An active Top Secret SCI w/Polygraph security clearance is required for this position. This position is part of our Federal Solutions team. Salary Range: $148,300.00 - $266,900.00 Benefits include medical, dental, vision, paid time off, 401(k), life insurance, flexible work schedules, and holidays. Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status. Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to #J-18808-Ljbffr Dormont Manufacturing Co