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Junior Software Engineer

Haystack

$55,250 - $99,875
Dec 3, 2025
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Leidos is hiring Junior Software Engineers to design, build, and debug mission-critical software using C/C++ and Rust, focusing on hands-on development and solving real technical problems.

Requirements

  • Strong C/C++ skills; Rust experience a big plus
  • Solid understanding of design patterns and software fundamentals
  • Git, Jira, Agile familiarity
  • Comfort working on MacOS, Windows, and Linux

Responsibilities

  • Design, build, and debug mission-critical software using C/C++ and Rust
  • Work through the full SDLC in agile teams
  • Contribute to new feature design and technical decisions
  • Write maintainable code, automated tests, and clear documentation
  • Collaborate using Jira, Confluence, Bitbucket/Git
  • Troubleshoot issues across multiple OS environments
  • Support continuous integration and performance improvements

Other

  • Degree in CS/Software Engineering (or similar) + under 2 years' experience
  • Ability to obtain a US DoD Secret clearance (US citizenship required)
  • Existing Secret clearance
  • Knowledge of mission planning systems or DoD environments
  • DoD 8570 IAT Level 2 certification