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Automated Software Test Engineer

Modern Technology Solutions, Inc.
401(k)
United States, Alabama, Huntsville
Dec 03, 2025
MTSI is seeking an Automated Software Test Engineer (Journeyman) to support the Flight Mission Simulator/Digital (FMS/D) program at S3I in Huntsville, AL.
The ideal candidate will develop and implement unit tests and automated test scripts, supporting end-to-end automation across the software lifecycle.
Responsibilities:
  • Develop, maintain, and execute automated tests ranging from low-level unit tests to high-level integration and functional tests.
  • Utilize test frameworks such as Google Test (GTest) or CxxTest and Python scripting to drive automation.
  • Support C++ and GTK3 software development efforts as needed.
  • Work daily in a secure, closed environment to enable automated testing on Linux-based systems.
  • Select and employ appropriate test automation tools to meet program requirements.
  • Serve as a mid-level engineer with strong technical focus on test automation and continuous improvement.
  • This is a remote position. This task requires daily support in a closed environment.
Requirements:
  • Active Secret Clearance
  • Bachelor's degree in Software Development or a related discipline from an accredited institution
  • 3-5 years of test engineering experience
Requires skills:
  • Proficiency in Python scripting
  • Strong Linux domain knowledge
  • Hands-on test automation experience (Google Test preferred)
  • Exposure to automated testing with C/C++ and/or Java tools
Desired Skills:
  • Experience with MATLAB
  • Familiarity with Agile methodologies
  • Knowledge of various test automation tools
  • Security+ certification
#LI-AS1





  • Interesting Work:



    Our co-workers support some of the most important and critical programs to our national defense and security.






  • Values:



    Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.






  • 100% Employee Owned:



    We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.






  • Great Benefits - Most Full-Time Staff Are Eligible for:





    • Starting PTO accrual of 20 days PTO/year + 10 holidays/year


    • Flexible schedules


    • 6% 401k match with immediate vesting up to $9k annually


    • Semi-annual bonus eligibility (July and December)


    • Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account


    • Up to $10,000 in annual educational reimbursement


    • Other company funded benefits, like life and disability insurance


    • Optional zero deductible Blue Cross/Blue Shield health insurance plan







  • Track Record of Success:



    We have grown every year since our founding in 1993.




Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.


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