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Software & IT

Application Developer - Senior (C# and .Net)

BAE Systems Space & Mission Systems logoBAE Systems Space & Mission Systems$97,008–$164,914/yrWestminster, Colorado, United StatesFull-timePosted 3w ago

About the role

</br><b>Job Description </b></br><span style="font-size:11pt"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">As a Senior Applications Developer on the Engineering Tools Development team, you will play a key role in developing our PLM and Digital Engineering applications that support our customers’ mission-critical objectives. This role combines deep technical expertise and cross-functional leadership.<br><br><b>What You’ll Do</b></span></span></span><ul style="margin-bottom:11px"><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Lead, assist, and collaborate with other application developers, business analysts, system administrators, and others in conceptualizing and developing new software programs and applications as well as maintaining existing applications.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Collaborate with specialists from a wide variety of expertise including mechanical engineering, material science, optical engineering, and other information technology team members.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Plan phases of the software development life cycle (SDLC) for a variety of projects.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Assist in the preparation and documentation of software requirements and specifications.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Research and document requirements of software users.</span></span></span></span></li></ul><ul style="margin-bottom:11px"><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Conduct research on emerging application development best practices, languages, and standards in support of development efforts.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Partner with business representatives to ensure requirements are well understood and documented to achieve successful delivery.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Actively work with the software development manager and architecture managers to align to a consistent technology vision and drive application development standards.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Facilitate peer-programming and design sessions/reviews with team members.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Participate in code reviews.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Foster and be a leader of a collaborative and team-oriented environment.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Ensure development quality is being tracked and improved using techniques like automated testing and peer code review.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Take the lead on solving and implementing difficult technology challenges and drive our team to successful delivery.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Consistently write, translate, code, and test software program and applications according to specifications.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Establish and maintain effective working relationships within the department, the Strategic Business Units, Strategic Support Units, and the Company.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Interact appropriately with others to maintain a positive and productive work environment.</span></span></span></span></li></ul><div style="margin-bottom:11px"><br><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">This role is hybrid 3 days a week on site</span></span></span></span></div></br></br><b>Required Education, Experience, & Skills </b></br><span style="font-size:11pt"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif"><b>Required Education, Experience, & Skills</b></span></span></span><ul style="margin-bottom:11px"><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Bachelor’s degree in computer science or related technical field and at least 4 or more years of related experience, or equivalent combination of education and experience.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Three or more years of experience in application development with C# and .Net.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Demonstrated knowledge of Web API REST services, and application integrations.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Strong understanding of object-oriented design, data structures, algorithms, and common software design patterns.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience utilizing Agile/Scrum Methodologies.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with source control, code reviews, testing, debugging, and the Software Development Lifecycle.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with relational databases preferably Microsoft SQL.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Strong analytical, problem solving, and collaborative skills.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Familiarity with Unit Testing/Test Driven Development/Behavior Driven Design.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with Entity Framework or equivalent ORMs.</span></span></span></span></li></ul><br></br></br><b>Preferred Education, Experience, & Skills </b></br><span style="font-size:11pt"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif"><b>Preferred Experience & Skills</b></span></span></span><ul style="margin-bottom:11px"><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with Python</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with PLM and manufacturing applications, including implementation and software development.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Familiarity with Aras Innovator or other PLM systems.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with UX design.</span></span></span></span></li><li style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">Experience with CI/CD pipelines and automated deployments.</span></span></span></span></li></ul><div style="margin-bottom:11px"><span style="font-size:11pt"><span style="tab-stops:list .5in"><span style="line-height:107%"><span style="font-family:Calibri,sans-serif">#LI-DM2<br>#LI-Hybrid</span></span></span></span></div><br><br><b>Pay Information</b><br>Full-Time Salary Range: $97008 - $164914<br><br>Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience. <br><br>Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.<br></br></br><b>About BAE Systems, Inc.</b></br>BAE Systems, Inc. is a defense, aerospace, and security company headquartered in Falls Church, Virginia, with more than 40,000 employees worldwide. We serve, supply, and protect those who protect us. As one of the most geographically diverse international defense companies, we deliver a full range of products and services spanning air, land, maritime, space, and cyber, including advanced electronics, intelligence solutions, and dedicated customer support.<br><br>Our culture is performance-driven and values-led, built on curiosity, creativity, and collaboration. Purpose isn't a tagline here. It's what drives us. We're developing breakthrough technologies that defend national security and make a lasting impact on our communities and our planet. When you join BAE Systems, you're not just building a career. You're contributing to a mission that truly matters.<br><br>This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.

Copied from the listing BAE Systems Space & Mission Systems published, verified 30 Oct 2026.

About BAE Systems Space & Mission Systems

Spacecraft, instruments and mission systems from the former Ball Aerospace, now inside BAE Systems.

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