Senior Systems Engineer

Systems Integration & Test Engineer

Job#: 3022947

Clearance Required: Secret (Interim acceptable)

Location: Onsite – Tewksbury, MA

Work Schedule: 9/80

Level: Senior (Level
4)

Duration: 1 year (expected 03/16/2026 – 03/15/2027)

We are seeking a Systems Integration & Test Engineer to support the planning, execution, and analysis of integration, verification, and validation activities for complex systems. This role requires strong analytical abilities, hands‑on integration experience, and the ability to collaborate across multidisciplinary engineering groups. The position includes both local and occasional non‑local travel in support of integration and test events.

• Participate in integration and test planning, execution, and verification/validation events
• Perform system performance assessments and validation testing to confirm compliance with system requirements
• Execute integration and testing activities aligned to defined milestones and schedules
• Integrate and test system software builds to support ongoing verification and test cycles
• Collaborate with cross‑program leads and stakeholders to:
  • Develop test approaches
  • Confirm test setup readiness
  • Support reviews (peer, gate, test readiness)
• Ensure test activities comply with established engineering processes and relevant technical release/export policies
• Conduct troubleshooting and resolution of technical observations during integration
• Support activities related to hardware‑ and software‑based testing, including hands‑on diagnostic work
• Travel up to 10%, supporting domestic test events and foreign military sales activities

• Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM)
• Minimum 6+ years of relevant experience
• Experience with one or more programming environments, such as:
  • MATLAB
  • Python
  • Perl
  • C/C++
  • Linux / Unix scripting
• Experience in systems engineering, integration, networking, verification, validation, or testing
• Experience troubleshooting and debugging software‑based systems
• Experience with Linux (e.g., Red Hat) or Unix‑based systems

• Experience with:
  • Test equipment and installations
  • Integration/regression testing
  • Test plan, test script, and test procedure development
  • Configuration control documentation
  • Reading/interpreting test setup schematics
• Networking or cybersecurity certifications such as CompTIA Network+ or Security+
• Hands‑on experience integrating and configuring electronics, network routers, or software installations
• Experience working with:
  • MATLAB
  • Linux (Red Hat)
  • Unix
  • Python/Perl/Shell scripting
• Familiarity with Agile and Dev Sec Ops  methodologies, including:
  • Sprint reviews
  • Daily standups
  • PI planning
  • Retrospectives
  • Use of JIRA / Confluence
• Strong integration skills and understanding of:
  • System algorithms
  • Signal processing concepts
  • System performance analysis
• Demonstrated ability to work effectively in collaborative team environments

• Onsite role with daily collaboration across Systems, Software, Hardware, and Test Engineering
• Fast‑paced integration lab and test environment
• Team‑oriented culture with strong cross‑functional communication

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law.