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Senior Software Engineer

Job in Aurora, Arapahoe County, Colorado, 80012, USA
Listing for: Legion Technical Solutions LLC
Full Time position
Listed on 2026-06-30
Job specializations:
  • Software Development
    Software Engineer, Java Developer, Backend Developer, Software Architect
Salary/Wage Range or Industry Benchmark: 100000 - 130000 USD Yearly USD 100000.00 130000.00 YEAR
Job Description & How to Apply Below
Position: Senior Software Engineer 4

Benefits

  • Dental insurance
  • Health insurance
  • Paid time off
  • Relocation bonus
  • Vision insurance

Legion Technical Solutions has a leadership opportunity for a Sr Software Engineer. This position will support a 23 person software team that develops modifications and enhancements to existing software systems, and supports the development and integration of new mission capabilities. The candidate is expected to be self‑directed, able to multi‑task and prioritize work, possess excellent problem‑solving skills, have strong written and verbal communication skills, be customer focused, and organized.

The position allows for a flexible schedule but generally requires daytime support during core hours, with occasional after‑hours call‑in support for a 24x7 operations team to resolve issues based on mission criticality and management guidance.

Responsibilities
  • Software development in JAVA and/or C++ within the full software development lifecycle, including requirements, design, development, debugging, and testing.
  • Integrate complex software and hardware subsystems and resolve identified conflicting issues.
  • Support the design, development, integration, and maintenance of new software functionality.
  • Leverage previously written code and make modifications as necessary.
  • Work closely with other disciplines (systems engineering, networking, configuration management, and hardware engineers) to troubleshoot and fix problems.
  • Be a team player incorporating a team‑based success philosophy.
  • Communicate effectively, describing complex and diverse engineering topics.
  • Took a leadership role for design teams and provide technical oversight to team members.
  • Lead design reviews, team meetings, program and customer meetings as needed.
  • Lead design performance and cost trade‑offs for proposed engineering changes.
  • Prepare and manage man‑power loading across the period of performance.
Required Skills
  • Must have 8 years of experience plus a B.S. in Engineering, Computer Science, or Software Engineering or 6 years of experience plus a M.S. in Engineering, Computer Science, or Software Engineering, or possess the equivalent of 16 years applicable experience in lieu of a degree.
  • Proficiency in C++, JAVA, version control, and documenting bugs/fixes in a UNIX/Linux environment.
  • Experience leading a software development team and working effectively in a dynamic technical environment.
  • Ability to work to a schedule and meet deliverable dates.
  • Perform all aspects of the software development lifecycle, including requirements definition and design, use case development, software development, testing, and maintenance.
  • Respond to operational issues and troubleshoot discrepancies against the system.
  • Develop and test resolutions to discrepancies and enhancements.
  • Develop and update documentation affected by software changes and ensure software standards are met.
  • Knowledge of troubleshooting, testing, fixing, and configuration management techniques and tools.
  • Self‑starter who works well within a team environment.
  • Strong interpersonal, organizational, and communication skills.
  • Support core hours 8am‑4pm and provide additional after‑hours support.
  • Must have a current DODI 8570.1‑M IAT Level II certification or obtain the certification within the first 60 days of employment.

Security Clearance Required – TS/SCI with polygraph

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Position Requirements
10+ Years work experience
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