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Principal Software Engineer

Modern Technology Solutions, Inc.

Posted today

Job Requirements

Huntsville, AL
Secret Polygraph Unspecified
Career Level not specified
Salary not specified
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Job Description

MTSI is looking for a talented Principal Software Engineer to join our team! In this role you will provide support to the Missile Defense Agency Next Generation Software Office to accelerate and modernize the development, integration, and delivery of resilient and secure Missile Defense System software.

Job Responsibilities
  • Provide technical and engineering analysis to support development of on-demand and cloud-based software for system of system development, integration, and testing.


Required Qualifications
  • US Citizenship and an active Secret clearance.
  • Masters degree in a STEM field with 12+ years working on missile defense-related or other complex, large DoD program/project.
  • Design, development, and management of software libraries and Cloud-based software architectures and requirements.
  • Experience in hardware in the loop and cloud-based testing to support software development and delivery.
  • Experience in management and review of application programming interfaces and interface control documents and enabling software utilized in Cloud-based and HWIL environments.
  • Experience in artificial intelligence development and tooling and agentic operations.
  • Ability to works independently, as a team member, or leading teams/ tasks, applying engineering rigor to solve engineering/ scientific problems.


Preferred Qualifications
  • Practical experience with software containerization concepts (e.g., Docker, Kubernetes, AWS, Azure) and migrating legacy enterprise applications to cloud-native architectures.
  • Strong working knowledge of Agile and Lean software development principles, particularly within a secure DoW DevSecOps framework.
  • Infrastructure as Code (IaC): Knowledge of or direct experience deploying IaC tools (e.g., Terraform, Ansible) to establish reproducible, auditable, and secure cloud environments.
  • Experience using modern configuration management and version control platforms (e.g., Git) to enforce policy-as-code, baseline management, and compliance configurations.
  • Top secret clearance or the ability to qualify for one.


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About Us
Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned technology firm specializing in Digital Engineering, Space Systems, Unmanned Systems, Flight Test Engineering, Modeling and Simulation, Cybersecurity, and DevOps for vital defense and intelligence programs. MTSI excels in delivering premier solutions to address global challenges. Founded in 1993, MTSI now operates across 20+ global offices and field sites. Perks of being part of MTSI's employee-ownership culture include: • 6% 401k matching with immediate vesting • Semi-annual performance bonuses • Company-funded Employee Stock Ownership Plan (ESOP) • 20 days of paid time off (PTO), 10 paid holidays, and flexible work schedules • Optional zero-deductible BC/BS insurance with FSA • Certified as a top workplace Join us in a company with a long-term strategy and a commitment to our employee-owners, free from external shareholders' demands.

Modern Technology Solutions, Inc. Jobs


Job Category
IT - Software
Clearance Level
Secret