Demo

Principal Systems Engineer

Apex Systems
Tewksbury, MA Full Time
POSTED ON 3/27/2026
AVAILABLE BEFORE 4/25/2026
Job#: 3022946

Job Description:

  • Candidates must be able to obtain and/or maintain a Department of Defense Secret Security Clearance as a condition and continuation of employment**

Systems Engineer – Integration & Test

Location: Onsite (Aurora, CO)

Work Schedule: 9/80

Level: Senior (Level 6)

Overview

We are seeking a Systems Engineer specializing in Integration & Test (I&T) to support complex ground systems within a fast‑paced, multidisciplinary engineering environment. This role focuses on integrating software and hardware components, validating system functionality, identifying and resolving technical issues, and supporting automated test development within an Agile team structure.

What You Will Do

  • Work with a cross‑disciplinary engineering team developing advanced ground‑system solutions
  • Perform integration, verification, and validation activities within an Agile Release Train (ART)
  • Identify, diagnose, and resolve system‑level technical issues during hardware/software integration
  • Develop and execute automated test scripts
  • Conduct troubleshooting and debugging across software‑based systems
  • Contribute to test environment development and integration planning
  • Collaborate closely with software, systems, and hardware teams
  • Operate within an Agile program environment, participating in sprints, reviews, and continuous integration activities

Required Qualifications

  • Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM)
  • Minimum 2 years of relevant engineering experience
  • Experience with systems integration and test for software-intensive systems, including:
    • Regression testing
    • Test scripting
    • Automated test tools
  • Hands‑on experience in Integration & Test engineering (I&T)
  • Experience debugging software-based systems
  • Experience with:
    • Linux (Red Hat)
    • Python or Perl
Desired Attributes (Optional Add‑On Section)

If you'd like, I can add preferred skills such as:

  • Hardware-in-the-loop (HWIL) experience
  • Automated test frameworks
  • Networking fundamentals
  • System architecture familiarity

Just say the word, and I’ll include them.

Work Environment

  • Highly collaborative engineering setting
  • Onsite work required due to system access and integration activities
  • Participation in Agile ceremonies and iterative development cycles

EEO Employer

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. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is part of the Commercial Segment of ASGN Incorporated.

NYSE: ASGN

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

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. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.

Salary : $60 - $92

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