Software Engineer; Associate-Mid) Security Clearance

Overview i3 is seeking Software Engineers to join the tour team in Huntsville, Alabama. You will help design, develop, integrate, test, and sustain mission‑critical command and control (C2) software used by our warfighters and customers around the world. In this role, you will support Agile Software Teams, working closely with systems and test engineers to build robust, secure, and scalable software solutions that address complex logical and mathematical challenges in support of Global C2 missions.

This position is ideal for engineers who enjoy hands‑on development, solving complex technical problems, and collaborating in a highly integrated, Agile environment.

• Design, develop, document, test, and debug applications and software systems that implement logical and mathematical solutions that are aligned with program objectives.
• Participate in Scaled Agile Framework (SAFe) Scrum teams to develop and maintain software products across multiple software baselines for the IBCS program.
• Work in a fast‑paced environment with high expectations, diverse assignments, and collaborative team settings across all levels of the organization.
• Perform software development and upgrades in multiple programming languages/versions while minimizing changes to the operational behavior of tactical software.
• Support documentation creation and updates using Markdown and other collaboration tools.
• Support testing activities including unit and functional testing, code coverage analysis, and static code analysis; contribute to continuous improvement of test effectiveness and automation.
• Other duties as assigned.

• Associate Software Engineer
  - Bachelor's degree in a STEM field and at least 1 year of relevant experience
• Software Engineer
  - Bachelor's degree in a STEM field and at least 2 years of relevant experience, Master's degree in STEM field and 0 years of relevant experience
• Strong object‑oriented software development experience with Java and C++
• Proficiency in Linux‑based development and runtime environments.
• Experience with scripting languages and tools including Bash and Python.
• Experience with modern configuration management and source control tools (Git / Git Lab).
• Experience with Agile SAFe and Atlassian Agile tools including Jira and Confluence.
• Active Secret Clearance and the ability to maintain a clearance required.
• Must be a U.S. Citizen.

• Experience with Model‑Based Systems Engineering (MBSE), including Cameo or similar tools.
• Experience with Dev Sec Ops  and CI/CD pipelines to build, integrate, test and deliver software.
• Experience supporting real‑time or distributed systems using RTI/DDS publish/subscribe middleware.
• Engagement:
  Experience with US Army Systems including PATRIOT, LTAMDS, SENTINEL A3/A4, IFF devices, and M_SHORAD.
• Experience with Engagement Planning and Execution, PAC2/PAC3, and AIM9x, and Indirect Fires.
• Track Management:
  Experience with track management including sensors, composite track, IFF devices, and Combat Identification.
• CompTIA Security+

• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.
• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.
• Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.
• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of…