- Senior
- Office in San Diego
Position: Engineer, Systems III (ESY3)
Location: San Diego, CA (Hybrid Considered)
Clearance Requirement: Current Top Secret clearance with ability to obtain SCI.
Position Overview
XSITE LLC is seeking a highly skilled Engineer, Systems III to support the design, development, integration, and sustainment of mission-critical Department of Defense (DoD) systems. This role requires a systems thinker with a strong foundation in systems engineering and the ability to work across hardware, software, and network environments. The ideal candidate will bring a mix of hands-on technical expertise and systems-level understanding, coupled with at least 7 years of professional experience.
This position is ideal for engineers who thrive in fast-paced environments, are comfortable managing the technical lifecycle of complex systems, and are motivated by mission impact.
Core Responsibilities
Systems Engineering & Integration
Design and integrate networked, software, and hardware systems with a focus on C4ISR and tactical communication platforms.
Analyze requirements and architecture to develop and validate system-level solutions that meet mission needs.
Develop system-level specifications and interface control documents (ICDs).
Ensure system compatibility and integration through rigorous testing and validation activities.
Lifecycle Management
Support the entire engineering lifecycle: design, development, testing, production, deployment, and sustainment.
Develop and execute system verification and validation plans.
Conduct trade studies, performance modeling, and risk assessments.
Technical Leadership & Support
Collaborate with multi-disciplinary teams and government customers to support program objectives and timelines.
Prepare and present technical data, white papers, and architecture artifacts to stakeholders.
Provide input into cost estimates, schedules, and technical risk assessments.
Required Qualifications
Bachelor of Science in Engineering, Computer Science, Information Systems, Applied Science, Physics, or related technical discipline.
Minimum of 7 years of professional experience in systems engineering, including development, testing, and sustainment of DoD systems.
Demonstrated experience with system-of-systems architecture, integration, and validation.
Experience with C4ISR systems or tactical communication systems.
Understanding of open architecture standards (e.g., SOSA, CMOSS, OMS/UCI, AMS GRA).
Familiarity with LPD/LPI waveforms and anti-jam technologies is a plus.
U.S. Citizenship and current Top Secret clearance holder, ability to obtain SCI.
Preferred (but not required) Qualifications
Experience with Agile development and DevSecOps pipelines.
Experience working on projects requiring SCI access.
Past work history supporting Top Secret or SCI-level classified programs.
Why XSITE LLC?
Best-in-Class Benefits & Work-Life Balance
100% employer-paid health, dental, and vision coverage.
401K with a 6% match
Industry-leading PTO package.
Continuing education reimbursement.
Hybrid onsite/remote work environment.
Stability & Long-Term Growth
Prime contract holder with long-term stability.
Mentor-protégé JV partnership with a major defense company.
Career Advancement
300% year-over-year growth and a fast-paced environment with opportunities for leadership and upward mobility.
Apply Today!
If you’re an experienced systems engineer ready to solve mission-critical problems and contribute to national defense, we encourage you to apply and join the XSITE team.
