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Software Test Engineer

Modern Technology Solutions, Inc.
401(k)
United States, Alabama, Huntsville
Sep 10, 2025
MTSI is looking for a Software Test Engineer (Journeyman) in the Huntsville, AL area. The selected candidate will be responsible for operating the PATRIOT Tactical System and developing and executing test cases that will be used to Verify and Validate the Flight Mission Simulator / Digital (FMS/D) program at S3I, Redstone Arsenal, Alabama.
Responsibilities:
  • Develop, Revise, Execute Test Cases (Adhoc or Planned Test Cycles)
  • Develop and Revise Test Artifacts/TC Inputs (Configuration Files, DTED, Enumerations, & Scripts)
  • Document and Verify Test Executions (Online, Online with Offline Signature, Online with Electronic Signature, or Offline)
  • Document and submit test case execution findings/issues to Senior Testers or Test Lead
  • Conduct Adhoc Testing on specific branch builds as required to support analysis and/or development
  • Conduct Adhoc Testing on specific branch builds as required to support collection of mean time of Test Case execution - Provide data to Senior Tester or Test Lead
  • Review Test Cases written by other Team Members
  • Status Project Management Tasks (currently GitLab is used)
  • Collect Product (FMS/D, IRON, LOTN, L2) Data and Data Collection System (DCS) data for each execution
  • Reviews and provides updates to Product User's Manuals and other Project Documentation
  • Support Users/Operators when needed - either deployed or in the local labs
  • Low level data parsing and analysis (DARTS, DCS, Parse, and Parameter)
  • Familiarize/Expand Domain Knowledge of the systems our products are used with (Tactical and Non-Tactical Patriot ECS & ICC, IBCS RIU, EOC)
  • Identify Off-Nominal Paths that need to be added to the Off Nominal Test Case
  • Respond to data calls via email, teams, or text when requested
  • Update Daily Quad Charts (when used)
  • Attend team meetings when scheduled
  • May be asked to perform tasks which enhance the Test Team's Test Coverage
  • May be asked to perform tasks which would be expected from a Senior Tester (with assistance)
Qualifications
  • Active Secret Clearance
  • Bachelor's degree in engineering, software development, or related discipline from an Accredited College
  • 5-10 years of software test experience
  • Strong Linux Domain Knowledge
  • Strong Software Test experience
  • Exposure to C/C++ Engineering Application experience
  • Desired Skills
  • GitLab
  • MATLAB
  • Agile Test Environment
  • Various Test Automation Tools
  • Security+ Certification
Desired Skills
  • Ability to demonstrate an understanding of Software Test Case development and execution. Army Air Defense Tactical System experience is a plus.
  • Experience with workflows in the GitLab DEVSECOPS tools.
  • Strong familiarity and understanding of Linux operating system.





  • 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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