Explore 5 back end java developer jobs from 2 hiring companies in Stratton, CO, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Back End Java Developer

Colorado Springs

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Back End Java Developer Jobs

Maxar Intelligence

Onsite

Logistics Management Institute

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:
<ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;">Develop and maintain server-side logic to power application functionality, handle user requests, and manage data.</li><li style="color: black; margin-bottom: 0in;">Design and implement RESTful APIs for internal and external communication.</li><li style="color: black; margin-bottom: 0in;">Create and optimize database schemas, write efficient queries, and ensure data integrity and security.</li><li style="color: black; margin-bottom: 0in;">Participate in code reviews, debug developed code and stay current with software development trends.</li><li style="color: black; margin-bottom: 0in;">Collaborate with front-end developers to integrate back-end functionality with user interfaces.</li><li style="color: black; margin-bottom: 0in;">Implement security measures to protect sensitive data and prevent unauthorized access.</li><li style="color: black; margin-bottom: 0in;">Contribute to the scalability and performance optimization of back-end systems.</li><li style="color: black; margin-bottom: 0in;">Write and maintain technical documentation for back-end systems and APIs.</li><li style="color: black; margin-bottom: 0in;">Collaborate with cross-functional teams to review and refine system architecture, interfaces, and data models in an agile environment.</li><li style="color: black; margin-bottom: 0in;">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.</li></ul>

Qualifications:
Required:<ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;">Bachelor’s degree in Computer Science/Engineering, or equivalent STEM field with 3-8 years of experience (2-7 years with Master’s degree) in back-end software development</li><li style="margin-bottom: 0in;">Proficiency in either SQL (e.g., MySQL, PostgreSQL) or NoSQL (e.g., MongoDB) databases.</li><li style="color: black; margin-bottom: 0in;">Experience with back-end technologies (Rust, Python, Java) within agile development frameworks</li><li style="margin-bottom: 0in;">Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.</li><li style="color: black; margin-bottom: 0in;">Experience with API development and integration and collaborating with front-end developers.</li><li style="color: black; margin-bottom: 0in;">Familiarity with version control systems (e.g., Git).</li><li style="color: black; margin-bottom: 0in;">Knowledge of software performance optimization.</li><li style="color: black; margin-bottom: 0in;">Familiarity with testing frameworks for back-end applications.</li><li style="color: black; margin-bottom: 0in;">Strong problem-solving skills.</li><li style="color: black; margin-bottom: 0in;">Excellent communication and teamwork abilities.</li><li style="color: black; margin-bottom: 0in;">US Citizenship required, eligible for TS clearance.  </li></ul>Desired:<ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;">Advanced degree in Computer Science or related field.</li><li style="color: black; margin-bottom: 0in;">Knowledge of cybersecurity best practices.</li><li style="color: black; margin-bottom: 0in;">Active TS clearance with SCI eligibility or prior experience working on government-related projects</li><li style="color: black; margin-bottom: 0in;">Space domain experience and familiarity with space-focused software solutions.</li></ul>Target salary range: $101,000- $174,000Disclaimer: 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. #LI-SH1

Back-End Software Developer - Mid-level

Back-End Software Developer

Mid-level back-end developer with 3-8 years experience; proficient in SQL/NoSQL, Rust/Python/Java; API development; security; collaborative and communicative.

Overview:
LMI is actively seeking a Mid-Level Back-End Software Application Engineer. This role involves working directly with U.S. government military and civilian customers and our analytic partners to translate analytic needs into responsive, high-performance software applications within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR®. This position is on-site in Colorado Springs, CO. 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:
Responsibilities:<ul><li>Develop and maintain server-side logic by writing code that powers the application's functionality, handles user requests, and manages data.</li><li>Create APIs that allow different parts of the application, or different applications, to communicate with each other.</li><li>Design database schemas, write queries, and ensure data integrity and security.</li><li>Ensure the application can handle a growing number of users and data efficiently.</li><li>Work closely with front-end developers to integrate the back-end functionality with the user interface.</li><li>Implement security measures to protect sensitive data and prevent unauthorized access.</li><li>Participate in code reviews, debug developed code and stay current with software development trends.</li><li>Ensure all changes or adaptations are thoroughly and meticulously reviewed, tested, and verified to eliminate application downtime or degradation.</li><li>Collaborate with cross-functional teams, develop reusable code components, and ensure application accessibility.</li><li>Actively participate in Integrated Product Teams (IPT’s) and other engineering working groups to review, assess, and mature engineering artifacts such as concept of operations (CONOPs), system architecture, system behavior, system interfaces, functional allocation, Interface Control Documents/Descriptions (ICDs), and data models.</li><li>Provide meeting coordination, technical expertise, and software development to assist the customer decision makers.</li></ul>

Qualifications:
Required:<ul><li>B.S. in Computer Science, Computer Engineering, or equivalent STEM-based degree.</li><li>5+ years of experience as a Back-End Software Application Developer with a portfolio, and proficiency in modern object-oriented programming languages such as Python, Java, C++, Node.js, or Ruby.</li><li>Experience with both SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB) databases.</li><li>Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.</li><li>Experience with cloud platforms like AWS, Azure, or Google Cloud.</li><li>Experience with efficient data storage and retrieval.</li><li>Strong, demonstrable understanding of modern design and coding principles and practices.</li><li>Familiarity with version control systems (e.g., Git).</li><li>Knowledge of software performance optimization.</li><li>Strong problem-solving skills.</li><li>Excellent communication and teamwork abilities.</li></ul>Nice to have:<ul><li>Advanced degree in Computer Science or related field.</li><li>Experience with testing frameworks.</li><li>Knowledge of security practices.</li><li>Active TS with SCI eligibility.</li><li>Space domain experience. </li></ul> Security Clearance Requirements: Candidate must be eligible to obtain a TS//SCI clearance, but no clearance is required to start. Candidates with an active TS//SCI or TS with SCI Eligibility will be given preference. Target salary range: $104,000 - 174,000The 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. #LI-SH1

Mid Level Back-End Software Application Developer

Back-End Software Application Developer

5+ years backend software development; BS in CS/CE; Python/Java/C/C++/Node.js/Ruby; SQL and NoSQL; Django/Flask/Spring/Express; AWS/Azure/GC; security, testing.

Overview:
LMI is actively seeking a skilled, experienced Senior Full-Stack Software Engineer to join our team in Colorado Springs, CO. This role involves working directly with USSF and US Government customers, as well as analytical partners, to translate wargame, exercise, training, and analytic needs into responsive, high-performance software applications 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. This position requires an active Top Secret clearance.  

Responsibilities:
• Lead the design, development, and maintain full-stack applications using modern front-end frameworks (React, Angular, Vue.js) and back-end technologies (Rust, Python, Java, Node.js etc.) • Lead the implementation of visually appealing and high-performance user interfaces that improve accessibility and enhance user experience • Develop and maintain server-side logic, create APIs, and design database schemas to power application functionality and manage data • Ensure seamless integration between front-end and back-end systems, collaborating closely with other developers • Implement security measures to protect sensitive data and prevent unauthorized access • Optimize both front-end and back-end performance for smooth interactions, quick load times, and efficient data handling • Ensure scalability and responsiveness of applications across different devices, browsers, and as user numbers grow • Utilize version control systems (e.g., Git) and participate in code reviews to maintain code integrity and quality • Stay current with software development trends and best practices in full-stack development • 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: • Bachelor’s degree in Computer Science/Engineering, or equivalent STEM field with 10+ years of experience (8+ years with Master’s degree) in software development • Significant experience with both modern front-end frameworks (React, Angular) and back-end technologies (Rust, Python, Java) within agile development frameworks • Strong understanding of JavaScript, HTML5, CSS3, and responsive web design principle • Experience with both SQL and NoSQL databases, and efficient data storage/retrieval techniques • Familiarity with cloud platforms (AWS, Azure, or Google Cloud) and back-end frameworks (Django, Flask, Spring, Express.js, etc.) • Knowledge of UI/UX best practices and accessibility standards for web applications • Experience with API design, development, and integration • Familiarity with secure software development practices and CI/CD pipelines • Strong problem-solving skills and understanding of software performance optimization • Excellent communication and teamwork abilities • Active TS Clearance, US Citizenship required Desired: • Advanced degree in Computer Science or related field. • Experience with testing frameworks for both front-end and back-end. • Familiarity with design tools such as Figma, Sketch, or Adobe XD. • Knowledge of containerization and orchestration technologies (Docker, Kubernetes) • Knowledge of cybersecurity best practices, particularly in web development. • Prior experience working on government-related projects • Space domain exercise, training, or wargaming experience and familiarity with space-focused software solutions. • Active TS clearance with SCI eligibility Target salary range: $110,000 - $190,000. Final compensation will be determined by a variety of factors including but not limited to your skills, experience, education, and/or certifications. #LI-SH1<div class="rndContainer borderRadius numOfSections_4 "><div class="titleDiv"> </div></div>

Senior Full-Stack Software Engineer - TS Clearance Required

Senior Full-Stack Software Engineer

BS in CS/Engineering or equivalent; 10+ yrs software development; strong front-end/back-end; TS clearance; Agile environment.

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LMI is actively seeking a dynamic, experienced Senior Back-End Software Application Developer. This role involves working directly with U.S. government military and civilian customers and our analytic partners to translate analytic needs into responsive, high-performance software applications within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR®. This position is on-site in Colorado Springs, CO. 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.

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<ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;">Develop and maintain server-side logic by writing code that powers the application's functionality, handles user requests, and manages data.</li><li style="color: black; margin-bottom: 0in;">Create APIs that allow different parts of the application, or different applications, to communicate with each other.</li><li style="color: black; margin-bottom: 0in;">Design database schemas, write queries, and ensure data integrity and security.</li><li style="color: black; margin-bottom: 0in;">Ensure the application can handle a growing number of users and data efficiently.</li><li style="color: black; margin-bottom: 0in;">Work closely with front-end developers to integrate the back-end functionality with the user interface.</li><li style="color: black; margin-bottom: 0in;">Implement security measures to protect sensitive data and prevent unauthorized access.</li><li style="color: black; margin-bottom: 0in;">Participate in code reviews, debug developed code and stay current with software development trends.</li><li style="margin-bottom: 0in;">Ensure all changes or adaptations are thoroughly and meticulously reviewed, tested, and verified to eliminate application downtime or degradation.</li><li style="color: black; margin-bottom: 0in;">Collaborate with cross-functional teams, develop reusable code components, and ensure application accessibility.</li><li style="color: black; margin-bottom: 0in;">Actively participate in Integrated Product Teams (IPT’s) and other engineering working groups to review, assess, and mature engineering artifacts such as concept of operations (CONOPs), system architecture, system behavior, system interfaces, functional allocation, Interface Control Documents/Descriptions (ICDs), and data models.</li><li style="margin-bottom: 0in;">Provide meeting coordination, technical expertise, and software development to assist the customer decision makers.</li></ul>

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<ul><li style="margin-bottom: 0in;">B.S. in Computer Science, Computer Engineering, or equivalent STEM-based degree.</li><li style="color: black; margin-bottom: 0in;">7+ years of experience as a Back-End Software Application Developer with a portfolio, and proficiency in modern object-oriented programming languages such as Python, Java, C++, Node.js, or Ruby.</li><li style="color: black; margin-bottom: 0in;">Experience with both SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB) databases.</li><li style="color: black; margin-bottom: 0in;">Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.</li><li style="color: black; margin-bottom: 0in;">Experience with cloud platforms like AWS, Azure, or Google Cloud.</li><li style="color: black; margin-bottom: 0in;">Experience with efficient data storage and retrieval.</li><li style="color: black; margin-bottom: 0in;">Strong, demonstrable understanding of modern design and coding principles and practices.</li><li style="color: black; margin-bottom: 0in;">Familiarity with version control systems (e.g., Git).</li><li style="color: black; margin-bottom: 0in;">Knowledge of software performance optimization.</li><li style="color: black; margin-bottom: 0in;">Strong problem-solving skills.</li><li style="margin-bottom: 0in;">Excellent communication and teamwork abilities.</li></ul>Nice to have:<ul><li style="color: black; margin-bottom: 0in;">Advanced degree in Computer Science or related field.</li><li style="color: black; margin-bottom: 0in;">Experience with testing frameworks.</li><li style="color: black; margin-bottom: 0in;">Knowledge of security practices.</li><li style="color: black; margin-bottom: 0in;">Active TS/SCI.</li><li style="margin-bottom: 0in;">Space domain experience.</li></ul>Security Clearance Requirements: Candidate must be eligible to obtain a TS/SCI clearance and willingness to obtain a CI Poly, but no clearance is required to start (eligibility to obtain a clearance is required). Candidates with an active TS/SCI or TS with SCI Eligibility will be given preference. Target salary range: $112,000 - $199,999#LI-SH1Applicants 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.

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Senior Back-End Software Application Developer - Clearance Desired

7+ years as a back-end developer; BS in Computer Science/Engineering; strong OO languages; SQL and NoSQL experience; cloud familiarity; security best practices; team collaboration.

Maxar

<h2>Please review the job details below.</h2>Vantor has an immediate opportunity for a Full Stack Developer to join a team building and maintaining multiple solutions leveraging custom web services with real time information and a visualization front-end. This would include working with a development team to outline, build and maintain an operational front-end focused on information and knowledge sharing as well as back-end services for managing data in real-time.LOCATION: Colorado Springs - On SiteResponsibilities:<ul><li>Participating in the design, maintenance, enhancement, and coding of web pages and any associated backend requirements leveraging modern frameworks</li><li>Recommending and implementing approved process and tool improvement based on user feedback or analysis of user interaction</li><li>Assisting in the ingest of geospatial data including imagery, maps, charts, GIS feature data, and integrated GIS data to the front- and back-end</li></ul>Minimum Requirements:<ul><li>Must be a US Citizen with the ability to obtain and maintain a TS/SCI clearance.</li><li>Bachelor’s degree in Computer Science, Software Engineering or a related field (4 additional years of experience may be substituted for a Bachelor’s degree. A Master&#39;s degree may count as an additional 2 years of experience.).</li><li>2 years demonstrated experience with programming, design, and development.</li><li>Demonstrated experience with Object-Oriented Design and Programming using C&#43;&#43;, Java, or similar programming language</li><li>Experience with JavaScript and modern web-frameworks</li><li>Agile Development experience</li><li>Ability to work independently and take ownership of the entire software development lifecycle</li></ul>Desired:<ul><li>Current TS/SCI Clearance</li><li>Experience with front-end development using Vue, Angular, or similar JS framework</li><li>Experience using Node.js</li><li>Working knowledge of containerization (Docker, Podman)</li><li>Experience with ORM software (Prisma, SQLAlchemy, etc)</li><li>Experience with Cesium</li><li>Understanding of TCP/IP networking and working knowledge of remote system workflows (SSH, port forwarding, server/client architecture, etc)</li><li>Working knowledge of software development tools, such as Jira, Confluence, BitBucket</li><li>Experience profiling for performance improvements to an existing codebase</li><li>Strong verbal, written, and organizational skills.</li></ul>#cjpost#LI-CJ1#LI-Onsite<div><div><div><div><div><div><div>In support of pay transparency at Maxar, we disclose salary ranges on all U.S. job postings.  The successful candidate’s starting pay will fall within the salary range provided below and is determined based on job-related factors, including, but not limited to, the experience, qualifications, knowledge, skills, geographic work location, and market conditions. Candidates with the minimum necessary experience, qualifications, knowledge, and skillsets for the position should not expect to receive the upper end of the pay range.The base pay for this position ranges from our lowest geographic market up to our highest geographic market within California, Colorado, District of Columbia, Hawaii, Illinois, Maryland, Minnesota, New Jersey, New York, and Washington:</div></div></div></div></div></div></div>$74,000.00 - $156,000.00 annually.We offer a comprehensive package of benefits including paid time off, health and welfare insurance, and 401(k) to eligible employees. You can find more information on our benefits at: <a href="https://urldefense.us/v2/url?u&#61;https-3A__link.clickup.com_CL0_https-3A-252F-252Fwww.maxar.com-252Fcareers-252Fbenefits_1_01010191954f08b9-2D7a4b76ba-2Dfd83-2D4fee-2D856d-2D6d5ecdc81f70-2D000000_KL-2DkWyJyO3BWuDH9yLU-2DYYPmv0KIimpjIN2pEhR3F8A-3D367&amp;d&#61;DwMFaQ&amp;c&#61;qqkkpu_zF8amsdnRZA_Et2-uNBtAipSVjV2iUVt238g&amp;r&#61;sndTzmlLkVxzCdrzE7ywg84iCbOzPEDJhLo3jgo0RLw&amp;m&#61;A7bmLT8GDz9pnIguDkMx0UsIs1kzVB1KunHzgfzFrJQSfrh9YUAWvUBhSNs0vHhV&amp;s&#61;kK57Pup-A_Q1dwLhdfSLPQEsfBF6CRDmf_i14bYhMc8&amp;e&#61;" target="_blank">https://www.maxar.com/careers/benefits</a>The application window is three days from the date the job is posted and will remain posted until a qualified candidate has been identified for hire.  If the job is reposted regardless of reason, it will remain posted three days from the date the job is reposted and will remain reposted until a qualified candidate has been identified for hire. The date of posting can be found on Maxar’s Career page at the top of each job posting.To apply, submit your application via Maxar’s Career page.Maxar Technologies values diversity in the workplace and is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law.

Software Engineer

Full stack development using JavaScript/TypeScript and back-end languages; US citizenship with TS/SCI; bachelor in CS/SE; 2 years of experience; on-site in Colorado Springs.

Back End Java Developer Jobs in Stratton, CO, US

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