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# Software Engineer III

- **Company:** Agile Defense
- **Location:** St. Louis, MO, United States
- **Salary:** $140,000.0 - $145,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Microsoft Windows, Agile Methodology, JIRA, Unit Testing, Microsoft Azure, C Sharp (Programming Language), C++ (Programming Language), CompTIA Security+, Continuous Integration, Relational Databases, Software Debugging, Embedded Software, Visual Basic .NET (Programming Language), Windows Servers, Nunit, Azure DevOps Pipelines, Mstest, Software Engineering, SQL Databases, Systems Integration, Xunit, SC Clearance, Information Technology, Restful APIs, Microservices
- **Published:** October 26, 2026
- **Apply:** https://www.careerbuilder.com/job-details/software-engineer-iii-saint-louis-mo--8d4677ca-d977-46b1-b2a9-611d2f310136

## About the Role

Software Engineering, Agile Programming Methodologies, Secret Clearance, CompTIA Security+, Computer Science, CompTIA - Computing Technology Industry Association, Embedded Software, Safety Standards, Test Plan/Schedule, Customer/Client Research, Required Certification: CompTIA Security+ certification or a degree in Computer Science, * CompTIA Security+ certification or a degree in Computer Science

 * 5+ years, * 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

## 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, * Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
 * Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated.
 * Honest - Be Trustworthy.Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support.
 * Humble - Be Grounded.Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task.
 * Hungry - Be Eager.Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges.
 * Hustle - Be Driven.Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success.