Senior Systems Integration and Test Engineer

Leidos Inc; Gaithersburg (MD); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Systems Integration & Test Engineer based out of Gaithersburg, MD to support the UK NASR PDT. You will join a dynamic team building and sustaining real-time, high-availability, safety-critical systems for national airspace operations.

You will design and execute comprehensive integration and test plans, lead formal test events, and develop automated scripts using HP ALM or Selenium. Strong cross-functional collaboration and clear communication with government stakeholders are

Qualifications

• Bachelor's degree in a technical discipline with 8+ years of professional experience or Master's with 6+ years of experience.
• Ability to obtain an SF-85P Public Trust clearance from FAA customer.
• Experience leading integration and test activities for complex software systems.
• Experience in UNIX/Linux environments and real-time systems.
• Strong communication skills to interface with internal teams and government stakeholders.

Responsibilities

• Design, develop, and execute integration and test plans and cases.
• Lead and coordinate formal test events (FAT, Functional, System & Integration, UAT).
• Maintain traceability between requirements and verification activities.
• Develop automated test scripts (HP ALM, Selenium).
• Manage defects, change requests, and action items through resolution.
• Mentor junior engineers and promote best practices in integration and verification.

Skills

Test leadership

Unix/Linux

Test automation

Communication

Cross-functional collaboration

Education

Bachelor's degree in a technical discipline

Master's degree

Tools

HP ALM

Selenium

Job description

Description

Leidos is seeking a Systems Integration & Test Engineer to be based out of Gaithersburg, MD.This position will support the United Kingdom National Airspace System Replacement Product Delivery Team - UK NASR PDT. This effort delivers enhanced capabilities to replace and modernize the current operational system supporting UK air traffic services.

You will join a dynamic engineering team responsible for building and sustaining real-time, high-availability, safety-critical systems that directly support national airspace operations.

What You'll Do

• Design, develop, and execute comprehensive integration and test plans, procedures, and cases to verify system functionality, performance, and requirements compliance
• Lead and coordinate formal test events including:
  • Factory Acceptance Testing (FAT)
  • Functional Testing
  • System & Integration Testing
  • User Acceptance Testing (UAT)
• Ensure traceability between requirements, verification activities, and test artifacts
• Develop and maintain automated test scripts using tools such as HP ALM, Selenium, or equivalent platforms
• Track and report test execution status, producing detailed reports and artifact packages for internal stakeholders and government customers
• Manage defects, change requests, and action items through resolution
• Facilitate test readiness reviews, peer reviews, and customer-facing test planning sessions
• Collaborate with software engineers, system engineers, and program leadership to ensure testability of requirements and alignment with project schedules
• Support development and maintenance of systems engineering documentation including:
  • Requirements Verification Matrices (RVM)
  • Interface documentation
  • Architectural artifacts
• Mentor junior engineers and promote best practices in integration and verification

Required Qualifications

• Bachelor's degree in a related technical discipline with 8+ years of professional experience,
  • OR Master's degree with 6+ years of professional experience
• Ability to obtain an SF-85P Public Trust clearance from the FAA customer.
• Experience leading integration and test activities for complex software systems
• Experience working within a defined Integration & Test development lifecycle
• Strong hands-on integration experience with large, distributed, or real-time systems
• Experience working in UNIX and/or Linux environments
• Demonstrated ability to lead cross-functional teams and coordinate formal test events
• Strong communication skills to interface effectively with internal teams and external government stakeholders

Desired Qualifications

• Advanced integration experience in one or more of the following areas:
  • New system functionality integration
  • Regression testing
  • Problem determination and root cause analysis
  • Data reduction and analysis
  • PR verification and change validation
• Experience supporting formal government acceptance testing
• Familiarity with systems engineering practices including:
  • Requirements engineering
  • Requirements baseline control and management
  • Operational and decision analysis
  • System definition and architecture development
• Air Traffic domain knowledge or experience supporting air traffic programs
• Experience operating in fast-paced, high-accountability environments requiring independent execution

Why Leidos

You will play a critical role in validating and integrating software that supports national airspace operations. This position requires precision, discipline, and leadership - ensuring complex systems perform reliably in operational environments where safety and performance are paramount.

If you are motivated by solving complex integration challenges and leading formal verification efforts in regulated, mission-critical systems, we encourage you to apply.

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

August 31, 2026

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 as listed above.

Pay Range

Pay Range: Pay Range $107,900.00 - $195,050.00

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.