Lead proactive cybersecurity activities supporting NASA deep space exploration under the JETSII Contract.

Lead rigorous security testing, threat modeling, and vulnerability assessments for Flight Software (FSW) and embedded spacecraft hardware.
Perform security evaluations to identify weaknesses and support mitigation of security gaps.
Research advanced spacecraft vulnerabilities and emerging cyber threats impacting spaceflight architectures and embedded systems.
Execute non-disruptive penetration testing and red-teaming campaigns across the Space Segment (flight software, RTOS, on-board buses), Link Segment (RF telemetry, CCSDS protocols), and Ground Segment (mission control).
Conduct deep-dive “bounty hunting” and vulnerability analysis on third-party software, open-source repositories, and embedded microcode in safety-critical systems.
Plan and run interactive Red Team versus Blue Team exercises to validate defenses and improve cyber resilience.
Collaborate with software, systems, and integration teams to incorporate cybersecurity best practices throughout the development lifecycle.
Document findings, provide risk-based recommendations, and support remediation and mitigation activities.
Perform other duties as assigned.

Bachelor’s degree or equivalent certification in a related area, plus minimum 5 years of experience in the field or a related area.
Bachelor’s degree in Engineering, Cybersecurity, or Cyber Operations.
Experience performing security testing on software, firmware, embedded systems, or mission-critical platforms.
Experience conducting threat modeling and risk assessments for complex systems.
Experience performing vulnerability assessments on critical software and hardware systems.
Experience with embedded software penetration testing, red teaming, or vulnerability research applied to aerospace or critical infrastructure platforms.
Demonstrated ability to write custom testing scripts and low-level code targeting resource-constrained environments (e.g., C/C++, Python, Assembly).
Strong analytical and problem-solving skills.
Excellent verbal and written communication skills, including clear communication of technical findings to technical and non-technical audiences.
Ability to obtain and maintain a Top Secret security clearance.

Experience with spacecraft, satellite, aerospace, defense, or other safety-critical systems.
Experience with Flight Software (FSW) development, testing, or security assessments.
Knowledge of secure software development practices and DevSecOps methodologies.
Ability to work effectively in a cross-functional engineering environment and support multiple projects simultaneously.

Salary starts at $83,700 per year.
Final pay will be commensurate with the candidate’s experience, skills, and qualifications.
Compensation range or hourly rate listed is a good-faith estimate based on when the posting was issued.

Generally an office environment, with possible inside or outside work depending on task.

Regular attendance per established work schedule is critical.
Ability to work outside normal schedule and adjust schedule to meet peak periods and surge requirements.

Professional behavior that enhances productivity and promotes teamwork and cooperation.
Grooming and dress must be appropriate for the position and must not impose a safety risk or hazard to the employee or others.

Location: Houston, TX (onsite)
Original posting date: 09/21/2026 (until filled)
Amentum anticipates the requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting.

Cybersecurity Engineer

Job Description