Submarine Senior Systems/Platform Engineer

Position: Submarine Senior Systems/Platform Engineer

Location: San Diego, CA (Hybrid considered)
Clearance Requirement: Secret (TS/SCI preferred)
Employment Type: Full-time

Position Overview

XSITE LLC is seeking a Lead Systems Engineer / Platform Architect to set technical direction and own the architectural baseline for submarine platform capabilities at the hardware-software boundary. You'll operate as a technical authority and chief integrator-driving requirements, architecture, and interface governance; coordinating cross-discipline teams; and serving as the primary liaison with government stakeholders and shipboard integration teams. This role emphasizes leadership, decision-making, and stakeholder alignment over hands-on implementation.

What You'll Do

• Own the technical baseline: Define and evolve CONOPS, system architecture, and interface control; maintain traceability from mission needs to verification evidence.
• Lead integration by influence: Orchestrate HW/SW integration across labs, SIL/HIL, and shipboard environments; set entry/exit criteria and readiness gates.
• Governance & decision-making: Chair or support design reviews (SRR/SDR/PDR/CDR), TIMs, CCBs, and technical risk boards; run trades and document decisions.
• Requirements leadership: Establish verification strategies and allocation; ensure requirements and ICDs remain synchronized with delivered capability.
• Stakeholder liaison: Serve as the primary technical POC with Navy customers, primes, and suppliers; align roadmaps, constraints, and test/sealift schedules.
• Quality & reliability oversight: Direct teams building diagnostics, regression suites, and observability; ensure platform reliability and performance targets are met.
• Digital/MBSE leadership: Guide SysML modeling, model governance, and alignment with requirements/data artifacts (e.g., DOORS/Jama Cameo/MagicDraw).
• Cyber & networks coordination: Oversee integration for tactical networks and platform cyber posture (RMF/ATO considerations, DISA STIG/SRG alignment).
• Plan the lifecycle: Shape the SEMP, V&V/TEMP approach, integration plans, and sustainment strategies; measure progress with meaningful technical metrics.

Note: This is a leadership/architect role. Hands-on coding or bench work is not the primary focus (though you should be able to read logs, designs, and code when needed).

Travel: Occasional lab/shipyard/test-range events as program needs dictate.

Required Qualifications

• Bachelor's in Engineering, Computer Science, Information Systems, Applied Science, Physics, or related field.
• 10+ years in systems/platform engineering with 5+ years leading multi-disciplinary teams or major subsystems.
• Demonstrated ownership of system architecture, ICDs, and requirements for complex, safety- or mission-critical systems.
• Experience leading integration and V&V across embedded devices, onboard servers, and tactical networks.
• Proficiency with requirements management (e.g., DOORS/Jama) and MBSE/SysML practices and governance.
• Strong communication and stakeholder management skills; proven record presenting to government customers and leadership.
• U.S. Citizenship; Secret clearance (TS/SCI preferred).

Preferred Qualifications

• Undersea/maritime domain experience (submarine C5I, combat systems, edge compute).
• Knowledge of open architecture standards (e.g., SOSA, CMOSS, OMS/UCI) and deterministic comms (MIL-STD-1553, CAN, RS-422/485).
• Familiarity with DevSecOps/CI/CD at the platform level and enterprise/tactical networking (routing, VLANs, QoS).
• Cybersecurity/RMF/ATO awareness (DISA STIGs/SRGs) and supply/supplier integration oversight.
• Exposure to HIL/SIL, digital twins/simulation, and reliability engineering.

Success Looks Like

• A stable, scalable architectural baseline with clear, enforced interfaces and decision records.
• Predictable integration cycles and readiness reviews that surface risks early and retire them on schedule.
• Measurable improvements in platform reliability, performance, and deployment cadence to the Fleet.
• High stakeholder confidence through clear communication, artifacts, and on-time technical milestones.

Why XSITE LLC?

Best-in-Class Benefits & Work-Life Balance

• 100% employer-paid health, dental, and vision coverage
• 401(k) with 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

• Rapid growth (300% YoY) with opportunities for leadership and upward mobility

---