Senior Systems Integration and Test Engineer

Leidos is seeking Systems Integration and Test Engineers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems. This work aligns with the FAA’s broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency, particularly in remote and high-dependency aviation environments. These efforts focus on delivering mission-critical, future-ready solutions that provide safety-critical flight services to the pilot community.As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native capabilities. You will work alongside cross-functional teams and technical leaders to deliver predictable outcomes in a highly regulated, safety-critical environment. In this position, you will be responsible for integrating and testing software that provides flight planning and other services to the pilot community. This position supports government programs and requires the ability to obtain and maintain a favorable Public Trust investigation.Primary Responsibilities:Collaborate with System Engineering team to develop comprehensive integration and verification plans that map requirements to test cases, pass/fail criteria and traceability artifacts.Able to understand System Level Requirements and perform system interface checkoutsAnalyze identified issues in conjunction with System Engineering and Software in regard to developing solutionsLearn system architecture, design, functions and capabilities to support the integration and test of the new capabilities and enhancementsDesign, develop, and execute test plans, test cases, and test procedures to verify software functionality, performance, and compliance with requirementsDebug system level issues and provide detailed supporting data on identified issuesDocument and track system defects and verify fixesPerform testing in physical and virtual test labs to ensure the system, test procedure, and test inputs are prepared to execute with the customer presentExecute manual and automated test procedures that verify the system is properly configuredCoordinate activities, communication, and planning efforts with the customer and Leidos personnelPerform formal test execution with the customer and quality assurance organizations presentDemonstrate test execution to the customer on a run for record to achieve customer acceptance of the content per releaseApplicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information.Required Qualifications:Bachelor’s degree from an accredited college in a related discipline with 9+ years of professional experience; or a master’s degree from an accredited college in a related discipline with 7+ years of professional experience.Experience and familiarity with Agile methodology, principles, and toolsAbility to obtain an SF-85P Public Trust clearance from the FAA customer.Experience in following a documented Integration and Test Development ProcessDeveloped and executed automated system integration and test solutionsExperience in the use of UNIX and Linux operating systemsProficiency in building and maintaining automated test suitesStrong integration skills with hands-on experience integrating large software complex systemsStrong written and verbal communication skills to interface with internal and external customersUS CitizenshipDesired Skills:Air Traffic Control and Flight Service ExperienceKnowledge of AI-assisted development workflows and tools (i.e. Claude Code, Codex, etc.)Knowledge of air traffic control systems, general aviation, and/or flight servicesPractical knowledge of FAA/DoD systems, technical policies, standards and ordersATMCIf 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:October 9, 2026For 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 $107,900.00 - $195,050.00The 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.SummaryLocation: Gaithersburg, MD; Ashburn, VAType: Full time