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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.
This is a U.S.-based position that offers a balanced hybrid schedule between 2-3 days in the office per week.
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 4+ years of professional experience ,
OR Master's degree with 2+ 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.
ATMC
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 $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline onlyand 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.
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
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
Securing Your Data
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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.
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.