Principal Systems Engineer​/SME

Description

Leidos has a new and exciting opportunity for a Principal Systems Engineer in our Intelligence Sector's Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.

At Leidos
, we offer competitive benefits
, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.
Join us and make a difference in National Security!

Leidos delivers advanced technical, engineering, and system administration expertise in direct support of a high-priority foreign engagement mission. This established effort leverages proven solutions and tailored engineering approaches to deliver mission-critical capabilities within a secure, high-trust environment. The program supports a complex and evolving mission where experienced cleared professionals work side‑by‑side with the customer to architect, integrate, modernise, and optimise systems that directly drive operational outcomes.

The Principal Systems Engineer serves as a senior technical authority leading the design, integration, testing, deployment, training and sustainment of packet‑based hardware and software systems utilizing Commercial Off‑The‑Shelf (COTS) and Government Off‑The‑Shelf (GOTS) products. This role drives end‑to‑end systems integration across hardware, software and network components to ensure seamless interoperability, operational performance and mission success across a complex technical landscape.

• Lead the design, integration, testing, deployment, training and sustainment of packet‑based hardware and software systems leveraging COTS and GOTS products.
• Direct end‑to‑end systems integration across hardware, software and network components to ensure interoperability, scalability and optimised performance.
• Develop and execute system‑integration plans, validation and verification procedures, and deployment strategies to ensure operational readiness and requirements compliance.
• Develop, update and maintain BASH and PERL scripts to automate system setup, configuration and maintenance of core servers and clustered computing environments.
• Implement automation initiatives and process improvements to enhance system reliability, efficiency and long‑term maintainability.
• Provide senior‑level technical leadership, advanced troubleshooting and lifecycle sustainment support, including system upgrades, patching and performance tuning.
• Deliver training and technical guidance to administrators, operators and cross‑functional engineering teams while ensuring adherence to security and configuration management standards.

• Minimum of twenty (20) years of Systems Engineering experience on programs/contracts of similar scope, type and complexity.
• Bachelor’s degree in a technical discipline related to Information Technology, Systems Engineering, Computer Science or a related field. Five (5) additional years of Systems Engineering experience may be substituted in lieu of a degree.
• Security Clearance requirement:
  Active TS/SCI with polygraph clearance.

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date.

Pay Range $ – $. 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.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient…