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Salary
$140k – $145k per year
Location
In office (Saint Louis)
Seniority
Middle · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 17, 2026. First seen by Alion on Apr 8, 2026. Agile Defense scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Agile Defense is an American government technology services company that has grown rapidly through acquisition into a mid-tier federal contractor, backed by the private equity firm Enlightenment Capital. It provides digital transformation, cloud and infrastructure services, cyber operations, artificial intelligence and mission support to defence, intelligence and civilian agencies, largely through cleared staff embedded with government programme offices. Headquartered in McLean, Virginia, it competes in the segment between the very large primes and the small business set-aside contractors, where consolidation has been rapid.

Requisition #: 1520

Job Tittle: Software Engineer III

Location: St. Louis, MO

Clearance: Secret

Required Certification: CompTIA Security+ certification or a degree in Computer Science

Job Description

  • Design, development, testing, and maintenance of non-embedded software throughout the end-to-end lifecycle that meets industry, customer, and safety standards for the Tomahawk program.
  • Review, analyze, and translate customer requirements into initial design of software products.
  • Developing, maintaining, enhancing and optimizing software products and functionalities for systems integrations.
  • Debug and resolve issues identified to ensure the reliability and efficiency of software products.
  • Handles user inquiries, troubleshoot technical issues and user feedback analysis.
  • Implement current and emerging technologies, tools, frameworks and changes in regulations relevant to software development
  • Execute and document software research and development projects

Education & Years of Experience

  • CompTIA Security+ certification or a degree in Computer Science
  • 5+ years

Required Skills

  • Active U.S. Secret Clearance with the ability to obtain a TS with the ability to obtain an SCI
  • 5+ years of experience with VB.NET or C#.NET (including .NET Framework)
  • 3+ years of SQL or other relational database
  • 1+ years of Unit testing frameworks like xUnit, nUnit, or MSTest

Preferred Skills

  • Windows Environment (Windows 10/11, Windows Server)
  • Knowledge of Windows Desktop Development Project Management Tools (Azure DevOps, Jira, etc.)
  • Azure DevOps Pipelines or other CI/CD tools Microservices or RESTful APIs Agile experience
  • Strong mathematical analysis skills or STEM degree C++ CompTIA Security+ certification or a degree in Computer Science

Working Conditions

    Boeing Facility/Office environment

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