LMI is seeking a Senior Back-End Software Developer to support the development and enhancement of LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR®. In this role, you will focus on implementing backend features and services that enable analysts, data scientists, and engineers to conduct complex analytical studies in the space domain.

You will work closely with multidisciplinary teams to translate analytical requirements into scalable, performant backend capabilities, including APIs, data pipelines, and integration services that support modeling, simulation, and trade space analysis.

This position is ideal for a developer who enjoys working at the intersection of software engineering and analytical problem-solving, and who can rapidly deliver capabilities in support of evolving mission needs.

On site support or candidates local to Colorado Springs are preferred; remote options are availalbe for the ideal candidate.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

Candidate must be eligible to obtain a TS/SCI clearance and willingness to obtain a CI Poly. Candidates with an active TS/SCI or TS with SCI eligibility will be given preference.

Target salary range: $101,144 - $174,591

Disclaimer: The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

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Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.