Leidos’ Defense Sector is seeking a Senior Systems Engineer to support an Army Program focused on delivering advanced capabilities for operational decision-making in complex and dynamic environments. The Senior Systems Engineer leads the planning, design, integration, and verification of complex systems across the full engineering lifecycle. This role requires deep system-thinking expertise, strong analytical skills, and the ability to coordinate technical efforts across multidisciplinary teams. The engineer will define system architectures, manage requirements, guide technical decision‑making, and ensure that all subsystems integrate seamlessly to meet program objectives. This position is ideal for someone who excels at solving complex problems, driving cross‑functional alignment, and influencing technical strategy.

Locations include Aberdeen Proving Ground, MD; Fort Belvoir, FL; Tampa, FL

This position is contingent upon program award, anticipated late March.

Primary Responsibilities:

• Lead the development, decomposition, and management of system‑level requirements, architectures, and technical baselines.
• Define system concepts, interfaces, and integration strategies for complex hardware and software systems.
• Conduct trade studies, risk assessments, and technical analyses to support decision‑making.
• Oversee system integration activities, ensuring compatibility and performance across subsystems.
• Lead verification and validation planning, including test strategy, requirements traceability, and acceptance criteria.
• Facilitate technical reviews (SRR, PDR, CDR) and ensure readiness for program milestones.
• Collaborate with engineering, program management, and customer stakeholders to ensure alignment with technical and program objectives.
• Troubleshoot system‑level issues and drive root‑cause analysis and corrective actions.
• Develop and maintain system engineering documentation, including specifications, interface control documents (ICDs), and system engineering plans.
• Mentor junior and mid‑level systems engineers and contribute to process improvement initiatives.

Basic Qualifications:

• Bachelor’s degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, Computer Engineering, or related technical field with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.
• Active Secret clearance with the ability to obtain a TS/SCI.
• Experience in systems engineering or multidisciplinary engineering roles.
• Strong understanding of systems engineering principles, including requirements management, architecture development, and verification/validation.
• Experience with systems engineering tools (e.g., DOORS, Jama, Cameo, JIRA, Confluence).
• Proven ability to lead cross‑functional engineering efforts and drive technical alignment.
• Strong analytical, organizational, and communication skills.
• Ability to interpret engineering drawings, specifications, and interface documents.

Preferred Qualifications:

• Master’s degree in systems Engineering or related discipline.
• Experience in aerospace, defense, automotive, robotics, or other complex system development environments.
• Knowledge of model‑based systems engineering (MBSE) methods and tools.
• Familiarity with risk management, trade studies, and technical decision frameworks.
• Experience leading design reviews and supporting major program milestones.

• Understanding of configuration management and change control processes.
• Ability to influence architecture decisions and long‑term technical strategy.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

February 26, 2026

Pay Range:

Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.