Explore 3 back end java developer jobs from 2 hiring companies in Centennial, CO, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Back End Java Developer

Lone Tree

Cherry Creek

Southglenn

Highlands Ranch

Denver

Greenwood Village

Aurora

Parker

Englewood

Littleton

Dove Valley

Stonegate

Columbine

Lakewood

Castle Pines North

Ken Caryl

Castle Rock

Commerce City

Cherry Hills Village

Back End Java Developer Jobs

General Atomics

Onsite

Logistics Management Institute

Overview:
<p style="margin: 0px;"><span style="font-size: 10pt;"><span style="font-family: Verdana, sans-serif;">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</span><span style="font-family: Calibri, sans-serif;">®</span><span style="font-family: Verdana, sans-serif;">.</span></span></p><p style="margin: 0px;"> </p><p style="margin: 0px;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">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.</span></p><p style="margin: 0px;"> </p><p style="margin: 0px;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">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.</span></p>

Responsibilities:
<ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Develop and maintain server-side logic to power application functionality, handle user requests, and manage data.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Design and implement RESTful APIs for internal and external communication.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Create and optimize database schemas, write efficient queries, and ensure data integrity and security.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Participate in code reviews, debug developed code and stay current with software development trends.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Collaborate with front-end developers to integrate back-end functionality with user interfaces.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Implement security measures to protect sensitive data and prevent unauthorized access.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Contribute to the scalability and performance optimization of back-end systems.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Write and maintain technical documentation for back-end systems and APIs.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">Collaborate with cross-functional teams to review and refine system architecture, interfaces, and data models in an agile environment.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: Verdana, sans-serif;">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.</span></li></ul>

Qualifications:
<p style="margin: 0px;"><span style="font-family: verdana, geneva; font-size: 10pt;"><strong>Required:</strong></span></p><ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">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</span></li><li style="margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Proficiency in either SQL (e.g., MySQL, PostgreSQL) or NoSQL (e.g., MongoDB) databases.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Experience with back-end technologies (Rust, Python, Java) within agile development frameworks</span></li><li style="margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Experience with API development and integration and collaborating with front-end developers.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Familiarity with version control systems (e.g., Git).</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva; color: black;">Knowledge of software performance optimization.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Familiarity with testing frameworks for back-end applications.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Strong problem-solving skills.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva; color: black;">Excellent communication and teamwork abilities.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-family: verdana, geneva; font-size: 10pt;"><span style="color: black;">US Citizenship required, eligible for TS clearance. </span> </span></li></ul><p style="margin: 0px;"><span style="font-family: verdana, geneva; font-size: 10pt;"><strong>Desired:</strong></span></p><ul style="margin-top: 0in;"><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva; color: black;">Advanced degree in Computer Science or related field.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Knowledge of cybersecurity best practices.</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Active TS clearance with SCI eligibility or prior experience working on government-related projects</span></li><li style="color: black; margin-bottom: 0in;"><span style="font-size: 10pt; font-family: verdana, geneva;">Space domain experience and familiarity with space-focused software solutions.</span></li></ul><p style="margin: 0px;"><span style="font-family: verdana, geneva; font-size: 10pt;"><span style="color: #000000;">Target salary range: $101,000- $174,000</span></span></p><p style="margin: 0px;"><span style="font-family: verdana, geneva; font-size: 10pt; color: #000000;"><span class="ui-provider a b c d e f g h i j k l m n o p q r s t u v w x y z ab ac ae af ag ah ai aj ak">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.</span></span></p><p style="margin: 0px;"> </p><p style="margin: 0px;"><span style="font-family: verdana, geneva; font-size: 10pt; color: #000000;"><span class="ui-provider a b c d e f g h i j k l m n o p q r s t u v w x y z ab ac ae af ag ah ai aj ak">#LI-SH1</span></span></p><p style="margin: 0px;"> </p><p style="margin: 0px;"> </p>

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.

<div><h3>Job Summary</h3><div><p>General Atomics Integrated Intelligence Inc. (GA-Intelligence) develops cutting-edge software solutions that transform raw data into actionable intelligence. We specialize in real-time global situational awareness and battle management, processing petabytes of data from hundreds of sources across air, land, and sea. Our systems—including the widely used THRESHER and DRAGONSPELL platforms—support tens of thousands of users at all levels of the DoD and Intelligence Community and enable critical decision-making for national security missions.</p><p>We process hundreds of thousands of observations per minute, operating at the scale of global sensor networks and battlefield telemetry. Our backend architecture leverages technologies like Kafka, AWS, NiFi, and GeoMesa—the latter of which we designed and open-sourced—to deliver high-throughput, mission-resilient systems that turn streaming data into real-time intelligence.<br><br><strong>Why GA-Intelligence?</strong></p><p>At GA-Intelligence, we’re not chasing hype or building throwaway demos—we’re solving complex, mission-critical problems that matter. Unlike younger firms chasing the next funding round, we’ve spent decades earning the trust of our users and delivering systems they rely on every day. And unlike traditional defense contractors, we’re nimble, privately held, and able to make long-term decisions in the best interest of our customers and our country—not quarterly earnings reports.</p><p>Our users love our software. Our customers come back because we deliver. And our engineers stay because they get to work on real problems, with real impact, alongside people who care.</p><p>If you're looking for a place where engineering excellence meets enduring mission, GA-Intelligence is where you belong.</p><h3 id="BESWEBaselineJobDescription-WhatYou’llDo"><strong>What You’ll Do</strong></h3><p>We are seeking Backend Software Engineers to help build the next generation of global situational awareness and battle orchestration capabilities. You’ll collaborate with cross-functional teams—including UI/UX engineers, mission engineers, data scientists, and product owners—to design and deliver software that is performant, scalable, and tailored to complex user needs.</p><p>Whether you're integrating multi-source data, optimizing backend services, or shaping how insights reach the end user, your work will directly support operational missions that have real-world impact.</p><h3 id="BESWEBaselineJobDescription-WhatWeBelieve"><strong>What We Believe</strong></h3><p>These values weren’t crafted in a branding session—they were observed and articulated after 35 years of building software that matters. They reflect how we work, what we value in each other, and the kind of impact we want to have. At GA-Intelligence, they aren’t aspirational—they’re how we operate.</p><ul><li data-uuid="4925e6ba-4757-4210-9779-f16f3704f97d"><p>Solving Meaningful Challenges – Building mission-driven technology that makes a difference</p></li><li data-uuid="7af1d099-94ce-413e-a765-4d5e611460da"><p>Collaborative Culture – Working as a team to push boundaries and innovate</p></li><li data-uuid="5ee4b3c2-24d0-488a-9ad3-dac276abc91d"><p>Technical Excellence – Encouraging continuous learning, curiosity, and efficiency</p></li><li data-uuid="ca0060d1-79ff-4a20-b9d1-742298af3ea4"><p>Idea Meritocracy – Valuing ideas based on impact, not hierarchy</p></li></ul><p>If these principles resonate with you—not just in theory, but in daily practice—you’ll find yourself at home here.</p><p><b>DUTIES AND RESPONSIBILITIES:</b></p><p>Mid-level engineers at GA-Intelligence are trusted contributors who bring solid engineering experience and judgment to every stage of the software lifecycle. You will design, build, and maintain robust backend systems, while collaborating with others to ensure solutions are effective, maintainable, and aligned with mission goals. You’ll also play an active role in mentoring junior engineers and shaping technical discussions within your team.</p><ul><li>Engineer high-quality software:<ul><li>Take ownership of features or services from design through deployment, ensuring quality, performance, and maintainability</li><li>Apply secure coding practices and contribute to system reliability, observability, and compliance with relevant standards</li><li>Improve and sustain deployed capabilities across customer and cloud environments by addressing evolving operational needs</li><li>Integrate backend components into larger system architectures and support deployments in cloud and bare-metal environments</li><li>Conduct and contribute to code reviews to uphold engineering standards and mentor less experienced developers</li></ul></li><li>Understand the domain and guide the design<ul><li>Work closely with users, stakeholders, and domain experts to understand requirements and translate them into reliable, maintainable code</li><li>Lead backend efforts on enterprise Java applications for command and control, geospatial data visualization, and analytics</li><li>Influence technical decisions during design, planning, and cross-team coordination meetings</li><li>Document technical decisions and communicate clearly with technical and non-technical stakeholders</li></ul></li><li>Build the team<ul><li>Actively support and guide junior engineers while demonstrating readiness for increasing leadership responsibilities</li></ul></li></ul>We recognize and appreciate the value and contributions of individuals with diverse backgrounds and experiences and welcome all qualified individuals to apply.<br> </div><h3>Job Category</h3><div>Engineering</div><h3>Employee Referral Eligible?</h3><div>Eligible for Employee Referral </div><h3>Travel Percentage Required</h3><div>0% - 25% </div><h3>Full-Time/Part-Time</h3><div>Full-Time Salary </div><h3>State</h3><div>Colorado </div><h3>Clearance Level</h3><div>Top Secret (SCI access eligible)</div><h3>Pay Range Low</h3><div>98,100</div><h3>City</h3><div>Aurora</div><h3>Clearance Required?</h3><div>Yes</div><h3>Pay Range High</h3><div>171,398</div><h3>Recruitment Posting Title</h3><div>Cleared Software Engineer</div><h3>Job Qualifications</h3><div><ul dir="auto"><li>Typically requires a bachelors degree, masters degree or PhD in computer science, information systems or a related discipline and progressive software development experience as follows; four or more years of experience with a bachelors degree or two or more years of experience with a masters degree.  May substitute equivalent experience in lieu of education.</li><li>Ability to understand and leverage filtering algorithms, such as Kalman filters and Interacting Multiple Model (IMM) filters.</li><li>Experience with a variety of programming languages, such as Java, Scala, Python, and Golang.</li><li>Supporting experience to execute against database technologies such as PostgreSQL.</li><li>Supporting experience to execute against cloud technologies such as Hadoop, Kafka, HBase, Accumulo.</li><li>Experienced with software version control systems, in particular, git.</li></ul><p><strong>DESIRED SKILLS AND EXPERIENCE:</strong></p><ul dir="auto"><li>Experience with Computer Vision systems and intelligence collection.</li><li>Knowledge of machine learning and deep learning techniques for enhancing tracking capabilities, such as object detection and classification.</li><li>CI/CD pipelines and tooling (Gitlab CI/CD, ArgoCD, CircleCI, Jenkins).</li><li>Experience with sensor technologies and data acquisition systems used in tracking applications, such as radar, lidar, GPS, or cameras.</li><li>Deployment technologies such as: Docker, Kubernetes, Knative, Helm, Rancher.</li><li>Knowledge of cloud computing platforms and services, such as Amazon Web Services (AWS) or Microsoft Azure.</li><li>Interested in maintaining and adapting existing codebases.</li><li>Experience with data fusion and data engineering tools.</li><li>Familiarity with Intelligence Community and DoD mission sets.</li><li>CompTIA Security+ certification or willingness to get certified.</li></ul></div><h3>Employee Referral Bonus Amount</h3><div>3000.00</div><h3>US Citizenship Required?</h3><div>Yes</div><h3>Experience Level</h3><div>Mid-Level (3-7 years) </div><h3>Relocation Assistance Provided?</h3><div>Yes</div><h3>Workstyle</h3><div>Onsite</div></div>

Cleared Software Engineer

Backend Software Engineer

Bachelor’s/Master’s/PhD in CS or related; 4+ yrs with BA, 2+ with MS. Java/Scala/Python, Kafka/Hadoop, cloud, CI/CD, security-focused.

<div><h3>Job Summary</h3><div><p>General Atomics Integrated Intelligence Inc. (GA-Intelligence) develops cutting-edge software solutions that transform raw data into actionable intelligence. We specialize in real-time global situational awareness and battle management, processing petabytes of data from hundreds of sources across air, land, and sea. Our systems—including the widely used THRESHER and DRAGONSPELL platforms—support tens of thousands of users at all levels of the DoD and Intelligence Community and enable critical decision-making for national security missions.</p><p>We process hundreds of thousands of observations per minute, operating at the scale of global sensor networks and battlefield telemetry. Our backend architecture leverages technologies like Kafka, AWS, NiFi, and GeoMesa—the latter of which we designed and open-sourced—to deliver high-throughput, mission-resilient systems that turn streaming data into real-time intelligence.<br><br>GA-Intelligence is looking for mid-level Tracking Engineers to revolutionize data fusion for air, maritime, and ground tracking. Harness your skills in algorithms, mathematics, and software engineering to architect innovative data collection, processing, analysis, and visualization solutions. Develop advanced probabilistic tracking solutions to empower real-time situational awareness. Join our growing team and shape the future of tracking and intelligence integration.</p><p>Mid-level engineers at GA-Intelligence are trusted contributors who bring solid engineering experience and judgment to every stage of the software lifecycle. You will design, build, and maintain robust backend systems, while collaborating with others to ensure solutions are effective, maintainable, and aligned with mission goals. You’ll also play an active role in mentoring junior engineers and shaping technical discussions within your team.<br><b>DUTIES AND RESPONSIBILITIES:</b></p><ul><li>Contribute to development and deployment of tracking systems, ensuring adherence to software compliance standards.</li><li>Develop and maintain robust tracking systems, incorporating advanced state estimation techniques (e.g. Kalman/IMM filters).</li><li>Leverage advanced data fusion techniques to accurately track objects in dynamic environments.</li><li>Mentor junior tracking engineers on current tracking methodologies and best practices.</li><li>Perform in-depth geospatial analysis to uncover patterns and trends.</li><li>Serve as a liaison between technical and non-technical stakeholders, effectively communicating complex technical concepts and requirements as required.</li><li>Document technical concepts, system architectures, and implementation details in a clear and concise manner for both technical and non-technical audiences.</li></ul>We recognize and appreciate the value and contributions of individuals with diverse backgrounds and experiences and welcome all qualified individuals to apply.<br> </div><h3>Job Category</h3><div>Engineering</div><h3>Travel Percentage Required</h3><div>0% - 25% </div><h3>Full-Time/Part-Time</h3><div>Full-Time Salary </div><h3>State</h3><div>Colorado </div><h3>Clearance Level</h3><div>Top Secret (SCI access eligible)</div><h3>Pay Range Low</h3><div>98,100</div><h3>City</h3><div>Aurora</div><h3>Clearance Required?</h3><div>Yes</div><h3>Pay Range High</h3><div>171,398</div><h3>Recruitment Posting Title</h3><div>Cleared Tracking Engineer</div><h3>Job Qualifications</h3><div><ul dir="auto"><li dir="ltr">Typically requires a bachelors degree, masters degree or PhD in computer science, information systems or a related discipline and progressive software development experience as follows; four or more years of experience with a bachelors degree or two or more years of experience with a masters degree.  May substitute equivalent experience in lieu of education.</li><li dir="ltr">Ability to understand and leverage filtering algorithms, such as Kalman filters and Interacting Multiple Model (IMM) filters.</li><li dir="ltr">Experience with a variety of programming languages, such as Java, Scala, Python, and Golang.</li><li dir="ltr">Supporting experience to execute against database technologies such as PostgreSQL.</li><li dir="ltr">Supporting experience to execute against cloud technologies such as Hadoop, Kafka, HBase, Accumulo.</li><li dir="ltr">Experienced with software version control systems, in particular, git.</li></ul><b>DESIRED SKILLS AND EXPERIENCE:</b><ul dir="auto"><li dir="ltr">Experience with Computer Vision systems and intelligence collection.</li><li dir="ltr">Knowledge of machine learning and deep learning techniques for enhancing tracking capabilities, such as object detection and classification.</li><li dir="ltr">CI/CD pipelines and tooling (Gitlab CI/CD, ArgoCD, CircleCI, Jenkins).</li><li dir="ltr">Experience with sensor technologies and data acquisition systems used in tracking applications, such as radar, lidar, GPS, or cameras.</li><li dir="ltr">Deployment technologies such as: Docker, Kubernetes, Knative, Helm, Rancher.</li><li dir="ltr">Knowledge of cloud computing platforms and services, such as Amazon Web Services (AWS) or Microsoft Azure.</li><li dir="ltr">Interested in maintaining and adapting existing codebases.</li><li dir="ltr">Experience with data fusion and data engineering tools.</li><li dir="ltr">Familiarity with Intelligence Community and DoD mission sets.</li><li dir="ltr">CompTIA Security+ certification or willingness to get certified.</li></ul></div><h3>US Citizenship Required?</h3><div>Yes</div><h3>Experience Level</h3><div>Mid-Level (3-7 years) </div><h3>Relocation Assistance Provided?</h3><div>Yes</div><h3>Workstyle</h3><div>Onsite</div></div>

Software Developer III

Mid-level software engineer with experience in Java, Scala, Python, and Go; strong algorithms, Kalman/IMM filters, data fusion, and back-end systems; familiarity with PostgreSQL, Hadoop, Kafka, and cloud tools.

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