Senior Systems Engineer – TS/SCI/Poly, On-site MD

Cornerstone Defense LLC; Annapolis (MD); On-site; USD 200,000 - 220,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

HSA and FSA options

Life and Disability Insurance

Tuition Reimbursement and Training

Perks at Work Discount Program

Referral Program

Job summary

Cornerstone Defense LLC is seeking a Systems Engineer in Annapolis Junction, MD to design, integrate, and maintain complex systems. The role requires active TS/SCI with a polygraph and emphasizes end-to-end lifecycle support across multiple disciplines.

You will translate requirements into robust solutions, collaborate with vendors, and ensure documentation and compliance. The ideal candidate has a degree in engineering or a technical field with relevant lifecycle experience and strong

Qualifications

• Bachelor's degree in engineering or relevant technical field plus 3 years of relevant experience, OR Masters degree plus 1 year of relevant experience.
• Relevant experience must be in engineering systems over their lifecycle (concept, design & development, testing, production, deployment, operation, maintenance & support, decommissioning).
• Strong analytical skills and cross-functional collaboration are essential.

Responsibilities

• Drive system-level requirements analysis and lead CONOPS development for complex programs.
• Lead requirements analysis and assist in developing CONOPS for system design.
• Develop and maintain functional and physical architecture models for assigned subsystems.
• Create and manage interface control documents (ICDs) and data models (e.g., XML schemas).
• Plan and execute integration and acceptance testing, including writing test plans and procedures.
• Conduct trade studies and risk assessments to support design decisions.
• Collaborate with cross-functional teams to ensure system integration and lifecycle support.
• Troubleshoot complex system issues and recommend corrective actions.
• Maintain compliance with industry standards and customer requirements throughout the lifecycle.

Skills

Analytical skills

Attention to detail

Cross-functional teamwork

Education

Bachelor's degree in engineering or relevant technical field

Master's degree

Job description

Cornerstone Defense LLC is seeking a Systems Engineer in Annapolis Junction, MD to design, integrate, and maintain complex systems. The role requires active TS/SCI with a polygraph and emphasizes end-to-end lifecycle support across multiple disciplines.

You will translate requirements into robust solutions, collaborate with vendors, and ensure documentation and compliance. The ideal candidate has a degree in engineering or a technical field with relevant lifecycle experience and strong