Lead Systems Integration and Test Engineer

Leidos LLC; Gaithersburg (MD); Hybrid; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Systems Integration & Test Engineer to be based in Gaithersburg, MD, supporting the UK NASR PDT. The role focuses on integrating and testing real-time, high-availability systems for national airspace operations, with a balanced hybrid schedule (2–3 days in the office weekly).

You will mentor engineers and collaborate across disciplines to ensure testability and timely delivery. The position requires a Bachelor’s (or Master’s) in a technical field and 4+ years (or 2+ years) of

Qualifications

• Requires a technical degree with 4+ years of experience or a Master’s degree with 2+ years of experience.
• Ability to obtain an SF-85P Public Trust clearance from the FAA customer.
• Experience leading integration and test activities for complex software systems.

Responsibilities

• Design, develop, and execute integration and test plans, procedures, and cases to verify system functionality, performance, and requirements compliance.
• Lead and coordinate formal test events including FAT, System & Integration Testing, and UAT.
• Develop and maintain automated test scripts using tools like HP ALM or Selenium; track test execution and report status.

Skills

Systems integration

Test engineering

Automation testing

UNIX/Linux

Cross-functional leadership

Education

Bachelor’s degree in a related technical discipline

Master’s degree in related field

Tools

HP ALM

Selenium

Job 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 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.

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 that disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Pay Range

Pay Range: Pay Range $87,100.00 - $157,450.00

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.

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 $17.2 billion for the fiscal year ended January 2, 2026. 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 here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.