Demo

Senior Software Engineer 4

Legion Technical Solutions LLC
Aurora, CO Full Time
POSTED ON 7/18/2026
AVAILABLE BEFORE 8/17/2026
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. This position will support an evolving system with opportunities for the candidate to provide technical input and direction. 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, is customer focused, and organized. The candidate is expected to lead and participate in the entire software life-cycle including architecture, development, test, and installation. The candidate will follow our client's engineering process as well as other government mandated processes during the life cycle of systems they will maintain. 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 include, but are not limited to: 
• Software development in JAVA and/or C within the context of the full software development lifecycle, including: software requirements, design, development, debug and test. 
• Demonstrated ability to integrate complex software and hardware subsystems and resolve identified conflicting issues. 
• Support to the design, develop, integrate and maintain new software functionality. 
• Demonstrated ability to leverage previously written code and make modifications as necessary. 
• Demonstrated ability to work closely with other disciplines (systems engineering, networking, configuration management, and hardware engineers) to troubleshoot and fix problems. 
• Team player incorporating a team-based success philosophy. 
• Proven communicator, able to describe complex and diverse engineering topics. 
• Taking a leadership role for design teams and provide technical oversight to the team members. 
• Lead design reviews, team meetings, program and customer meetings as needed. 
• Lead design performance & 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, versioning control, and documenting bugs/fixes in a UNIX/Linux environment.  
• Demonstrated experience leading a software development team and ability to work effectively in a dynamic technical environment.  
• Demonstrated ability to work to a schedule and meet deliverable dates. 
• Must be able to perform all aspects of the software development lifecycle to include requirements definition and design, Use Case development, software development, testing and maintenance.  
• Respond to operational issues and troubleshoot discrepancies written against the system.  
• Develop and test resolutions to discrepancies and enhancements.  
• Develop and update documentation affected by software changes and ensures software standards are met. 
• Knowledge of troubleshooting, testing, fixing & configuration management techniques and tools.  
• Must be a self-starter who works well within a team environment  
• Candidates must have good interpersonal, organizational and communication skills.  
• Must be able to support core hours 8am-4pm and provide additional after hours support.  
• Must have a current DODI 8570.1-M IAT Level II certification or must obtain the certification within first 60 days of employment.  
 
*Security Clearance Required – TS/SCI w/ Poly 

Salary : $175,000 - $195,000

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