Senior Systems Integration & Test Engineer

Leidos•Gaithersburg, MD

About The Position

Leidos is seeking a senior Test Engineer (Level 4) to serve as a lead member of a team supporting the SkyLine-X KN-2 program. The role leads verification, validation, and qualification of advanced systems, with a focus on testing methodologies and systems integration for Air Traffic Control modernization initiatives. The engineer designs, implements, and maintains test frameworks and procedures aligned with systems assurance, safety, and performance standards. The team uses Artificial Intelligence and Machine Learning techniques to enhance testing. The position provides technical leadership for systems and software integration in support of Development Test and Formal Test execution. It includes integrating complex systems with minimal oversight, debugging system-level issues, developing requirement-based test approaches and procedures, and maintaining test artifacts and documentation. The engineer coordinates with customer personnel and cross-functional engineering teams, supports deployment at customer operational facilities, communicates status to internal and customer stakeholders, and mentors junior integration engineers. The role participates in Agile activities and may require overtime, off-hours or weekend work, as well as travel.

Requirements

Bachelor's degree in Computer Science, Engineering, Information Systems, or a related technical discipline with at least 8 years of relevant experience, or a related Master's degree with at least 6 years of relevant experience; equivalent experience may be considered.
Experience integrating and testing large-scale, distributed software systems.
Strong Linux/UNIX administration and troubleshooting experience.
Experience with Python, Bash, or Shell scripting for automation and data analysis.
Experience troubleshooting network configurations, connectivity, and distributed-system interfaces.
Experience developing automation solutions that improve engineering efficiency.
Working knowledge of test automation, including automated test frameworks and scripts such as Squish, Selenium, PyTest, or Robot Framework for repeatable testing.
Demonstrated experience in testing, test framework development, and system-level verification of complex or safety-critical systems.
Systems Engineering experience, including work gathering user requirements and converting them into system requirements.
Proficiency with scripting languages.
Experience with Linux or Unix-based environments, containerization such as Docker or Podman, and CI/CD pipelines.
Technical leadership experience requiring significant coordination across multiple functional areas, such as Software, Hardware, and Systems Engineering.
Excellent verbal and written communication skills, including experience working directly with customers to discuss requirements and objectives.
Strong analytical and problem-solving skills and ability to work effectively in a team environment.
Ability to work overtime, off hours, or weekends when necessary, and support travel.

Nice To Haves

Familiarity with integrating automated tests into CI/CD pipelines to support regression coverage.
Familiarity with AI-assisted testing approaches, such as test case generation or anomaly detection, and Claude Code.
Experience integrating mission-critical or highly available systems.
Air Traffic Management domain experience.
Familiarity with requirement decomposition to develop A-Level test approaches and procedures.
Familiarity with the Atlassian Tool Suite and JIRA.
Familiarity with Model-Based Systems Engineering and system integration V&V processes.
Knowledge of microservices architectures, message brokers, RESTful API testing, and Chaos Testing principles.
Knowledge of test tools such as Selenium, Sikuli, or Squish, and simulation or test-harness frameworks.
Familiarity with NextGen Air Traffic Control modernization programs.
Experience preparing and executing Verification Cross Reference Matrices and Test Readiness Review documentation.

Responsibilities

Integrate, configure, and validate SkyLine-X KN-2 capabilities in physical and virtual integration laboratories.
Execute system integration, verification, and validation to ensure the system is configured and operating within the National Airspace System.
Support formal customer demonstrations, verification events, and customer acceptance testing with KN-2 stakeholders.
Collaborate with software, systems engineering, networking, and infrastructure teams to investigate, troubleshoot, and resolve complex system-level issues.
Analyze integration and test results, identify root causes, and provide technical documentation supporting issue resolution.
Support deployment and integration activities at customer operational facilities, including Air Traffic Control Towers.
Execute system interface testing and validate communications across internal and external interfaces.
Coordinate integration activities with customer personnel and cross-functional Leidos engineering teams.
Develop automated tools, scripts, and AI-assisted solutions to improve test efficiency, reduce manual effort, and streamline repetitive tasks.
Support remote deployments in coordination with infrastructure, networking, and installation teams.
Maintain a deep understanding of SkyLine-X architecture, functionality, interfaces, and operational workflows.
Partner with Systems Engineering to develop integration and test strategies for new capabilities and system enhancements.
Integrate services with databases, messaging systems, and external APIs.
Troubleshoot networking issues, IP configurations, and interface connectivity.
Demonstrate system capabilities during formal run-for-record events supporting customer acceptance and release readiness.
Provide technical leadership and mentorship to junior integration engineers and help achieve program milestones.
Serve as a technical lead for systems and software integration for Development Test and Formal Test execution on the SkyLine-X KN-2 program.
Integrate complex systems and software with minimal oversight, debug system-level issues, and provide detailed supporting data.
Develop and maintain test approaches and procedures derived from system-level requirements, including system- and component-level procedures, test cases, and data sets.
Conduct root cause analysis and defect resolution with software and systems engineering teams.
Execute integration testing of distributed, safety-critical systems using containerized or virtualized environments, and manage virtual machines and development containers.
Develop and maintain test artifacts and documentation, including the Verification Requirements Test Matrix, traceability matrices, and test reports.
Interface with software, systems engineering, and integration/logistics teams in support of installation and integration.
Communicate status and prepare briefings for internal and customer stakeholders; support test readiness reviews and system qualification events.
Participate in daily stand-ups, Sprint Planning, Release Planning, and other Agile team activities.
Work overtime, off hours, or weekends if necessary to meet deadlines, and support travel.