Back-End Software Developer - Mid-level

Overview

LMI is actively seeking a dynamic, experienced Mid-level Back-End Software Developer to join LMI’s Space Market software development team in Colorado Springs, CO. This role involves working directly with USSF and US Government customers, as well as analytical partners, to drive the development of responsive, high-performance user interfaces within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR®.

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.

Responsibilities

• Develop and maintain server-side logic to power application functionality, handle user requests, and manage data.
• Design and implement RESTful APIs for internal and external communication.
• Create and optimize database schemas, write efficient queries, and ensure data integrity and security.
• Participate in code reviews, debug developed code and stay current with software development trends.
• Collaborate with front-end developers to integrate back-end functionality with user interfaces.
• Implement security measures to protect sensitive data and prevent unauthorized access.
• Contribute to the scalability and performance optimization of back-end systems.
• Write and maintain technical documentation for back-end systems and APIs.
• Collaborate with cross-functional teams to review and refine system architecture, interfaces, and data models in an agile environment.
• Actively collaborate in cross-functional engineering working groups to review, assess, and mature software artifacts such as system architecture, system behavior, system interfaces and requirements, software test plans, UI / UX designs, functional allocation, Interface Control Documents / Descriptions (ICDs), and data models.

Qualifications

Required :

Desired :

Target salary range : $101,000- $174,000

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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LMI is an Equal Opportunity Employer. LMI is committed to the fair treatment of all and to our policy of providing applicants and employees with equal employment opportunities. LMI recruits, hires, trains, and promotes people without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, pregnancy, disability, age, protected veteran status, citizenship status, genetic information, or any other characteristic protected by applicable federal, state, or local law. If you are a person with a disability needing assistance with the application process, please contact

Colorado Residents : In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

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