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  • Sr Backend Engineer, Discovery API

     ...helps people map, monitor, and respond to what's happening across the planet, and our catalog API is how customers find and access it. We're looking for a senior backend developer to own that API end to end on a small, high-autonomy team, with real influence over its... 
    Suggested
    Full time

    Maxar Technologies

    Westminster, CO
    2 days ago

  • Front-end Software Developer

    $90.3k - $189.6k

     ...looking for a Senior Front-End Software Developer on the FADE program to build mission-critical...  ...of new requirements using contemporary web technologiesCreate intuitive applications...  ...front-end applications with RESTful APIs, WebSocket services, and distributed backend... 
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    CACI International

    Denver, CO
    2 days ago

  • Sr Front-end Software Developer

    $108.4k - $227.5k

     ...CACI is seeking a Senior Front End Software Developer for the GEOINT Tradecraft Suite (GTS)...  ...will design and develop modern, intuitive web applications that enable analysts to discover...  ...front-end applications with RESTful APIs, microservices, and enterprise data services... 
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    CACI International

    Denver, CO
    3 days ago

  • Front End Software Developer

    $82.1k - $172.4k

     ...seeking an experienced Front End Software Developer to join a multidisciplined team to work...  ...responsible for developing and maintaining web applications, ensuring a seamless user...  ...systems (e.g., Git). Familiarity with RESTful APIs and websockets. Excellent problem-solving... 
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    CACI International

    Denver, CO
    5 days ago

  • .Net Full Stack Lead Developer

     ...lead with strong hands on experience in C#, Angular (Mandate), Web API(Mandate) JQuery (Mandate)Windows Communication Foundation (WCF...  .... .Net / C# (backend service/API programing and not front end developers) Candidate should have been currently working as lead in the... 
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    Full time

    EROS Technologies

    Denver, CO
    4 days ago

  • Frontend Developer

    $135k - $230k

     ...level proficiency in TypeScript and React (including hooks, context API, and state management libraries like Redux or Recoil). ~...  ...Structures, Algorithms, and Design Patterns ~ Solid understanding of web performance optimization techniques. ~ Experience with modern... 
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    Full time
    Temporary work

    IQ Clarity LLC

    Denver, CO
    3 days ago

  • Principal Software Engineer - Frontend, Developer Experience

     ...data volumes and associated costs by 84% on average while saving developers thousands of hours. Recognized as a leader by major analyst...  ...the organization to evolve the architecture powering our UIs and APIs (TypeScript, React, GraphQL, NodeJS).Work closely with talented... 
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    Full time
    Remote work
    Flexible hours

    Palo Alto Networks

    Denver, CO
    4 days ago

  • Full Stack Java Developer

     ...variable cost.Job DescriptionFull Stack Java Developer who has 6+ years' experience with both...  ...must have the ability to construct Web pages using AngularJS. Candidate must also...  ...development including RESTful WebServices and APIs, DAO/DTO, mySQL/Postgres This project... 
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    Immediate start

    Artech

    Englewood, CO
    4 days ago

  • IT Full-Stack Developer - Velocity

    $80k - $130k

     ...they live, learn, and work.As a Full-stack Developer at Nelnet, you will build the next...  ...total experience delivering enterprise class web applications, with at least 3 most recent...  ...experience building and consuming RESTful APIs- Solid understanding of the full web technology... 
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    Full time
    Temporary work
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    Local area
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    Nelnet

    Centennial, CO
    1 day ago

  • Senior Full Stack Engineer (Denver, Seattle)

    $500 per month

     ...You will build across the stack, including React-based web & mobile apps, GraphQL & MCP APIs, and org-wide data models . You will work closely...  ...features across the frontends, APIs, and data layer. Develop accessible, responsive web & mobile experiences using React... 
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    Full time
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    Local area
    Flexible hours
    Shift work
    1 day per week

    Housing Connector

    Denver, CO
    3 days ago

  • Senior UI Engineer

    $120k - $160k

     ...Join SAIC in Colorado Springs, CO, to develop mission-critical military, intelligence, and...  ...Go, and leverage Kubernetes, REST/GraphQL APIs, and microservices. Work with data engineers...  ...responsive design, A11y compliance, and web performance. DevOps Skills: Familiarity... 
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    SAIC

    Colorado Springs, CO
    5 days ago

  • Senior Specialist, Software Engineering - Back End Developer

    $97k - $180k

     ...L3Harris is dedicated to recruiting and developing high-performing talent who are passionate...  ...Expertise in backend development of web applications using Java, Spring Boot, and...  ...scalable, reliable distributed services and APIs. Support and participate in all phases... 
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    Full time
    Local area
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    L3Harris Technologies

    Colorado
    15 hours ago

  • Software Engineer - Web Developer (Top Secret with agreement to obtain CI Poly)

     ...the NGA based on agency directives. We are developing innovative solutions for geospatial...  ...Required Qualifications: Frontend web development using modern techniques and frameworks...  ...js and Ember.js, D3) Consuming RESTful APIs Using and working in team environments... 
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    Flexible hours

    North Point Technology

    Denver, CO
    a month ago

  • Web Developer

    $37.5 - $55.5 per hour

     ...candidates within the United States. Key Responsibilities Web Application Development: Design, develop, and implement web applications using modern...  ...database management systems (e.g., MySQL, MongoDB) and API integration. Familiarity with version control systems (... 
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    Full time
    Part time
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    Monday to Friday

    Zephyrus Engineering Limited

    Aurora, CO
    4 days ago

  • Senior Frontend Software Engineer

     ...constraint shapes everything about how we build, develop, and engineer our product. The Role...  ...-ready interfaces for kiosk, mobile, and web. Lead new user-facing systems as the...  ...operations engineers on application architecture, APIs, and integrations. Develop and test... 
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    Jobleads-US

    Denver, CO
    2 days ago

  • Web Application Developer

    $83k - $130k

     ...Job Description Overview AtkinsRéalis is seeking a Web Application Developer to join our Technology Solutions team. This role will support...  ...Familiarity with Linux, Node.js, npm, PostgreSQL, REST APIs, or CI/CD practices is helpful but not required. Ability... 
    Full time
    Temporary work
    Internship
    Work at office
    Flexible hours

    AtkinsRéalis

    Denver, CO
    a month ago

  • Software Engineer - Cloud, APIs & Microservices

     ...systems, applying QoS metrics and DevSecOps practices while learning from senior engineers. Responsibilities include designing web services, APIs and microservices; collaborating across product teams; and translating requirements into concrete specifications in a fast-... 

    Jobleads-US

    Aurora, CO
    3 days ago

  • Full Stack Software Engineer

    $80k - $130k

     ...full-stack software applications and platforms — from frontend interfaces to backend services, APIs, and data layers — that improve business and operational performance.· Develop and maintain backend services, APIs, and data integrations using modern frameworks and... 
    Full time
    Work at office
    Local area
    Remote work

    Loenbro

    Westminster, CO
    3 days ago

  • Full Stack Software Developer, Mid-level

    $82.1k - $172.4k

    Job Title: Full Stack Software Developer, Mid-levelJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCI...  ...experienceKnowledge of WebSocket'sExperience with RESTful API design and implementationSecurity+ certification (or willingness... 
    Contract work
    Work experience placement
    Flexible hours

    CACI International

    Denver, CO
    1 day ago

  • Senior Fullstack Software Engineer - Ecommerce

     ...strategies to resolve subsystem bottlenecks and meet team uptime OKRs.Develop decoupled integration points across AEM and Commerce services to...  ...GraphQL schema design, backend resolver optimization, and REST API development for low-latency data retrieval.Competence across... 
    Local area
    Flexible hours

    EchoStar

    Englewood, CO
    4 days ago

  • Software Engineer III - Full-stack Developer with Anthropic Experience

    $122k - $240.5k

     ...operationalize RESTful and asynchronous APIs on cloud-native infrastructure (AWS, Azure...  ...deployment.4+ years of experience designing, developing and delivering AI/ML solutionsAt least 1...  ...major cloud platform, including Amazon Web Services, Microsoft Azure, or Google... 
    Work at office
    Local area
    Visa sponsorship
    Flexible hours
    Shift work

    Deloitte

    Denver, CO
    5 days ago

  • Full Stack - Digital Commerce Software Engineer II

    $110k - $125k

     ...Engineer II is responsible for analyzing, designing, testing, developing, and maintaining software experiences across global website development...  .... Demonstrated understanding of modern architecture, including API design and RESTful best practices. Prior experience building or... 
    Immediate start
    Flexible hours
    Shift work

    Veralto

    Loveland, CO
    5 days ago

  • Full Stack Software Engineer

    $82.1k - $172.4k

     ...to join our dynamic team. As a key contributor, you will design, develop, and maintain innovative software solutions that meet modern...  ...system performance. A strong understanding of cloud computing, APIs, and software architecture is highly desirable. If you are passionate... 
    Contract work
    Work experience placement
    Work at office
    Flexible hours

    CACI International

    Aurora, CO
    1 day ago

  • Forward Deployed Engineer, USG Analytics (Backend & AI)

    $140k - $144.2k

     ...and innovation for government clients. Your work will involve developing scalable, secure applications that integrate seamlessly across...  ...orchestration frameworks, tool-calling architectures, and secure API integrations. Your responsibilities will include developing backend... 
    Apprenticeship
    Easy work
    Flexible hours

    McKinsey & Company

    Denver, CO
    1 day ago

  • IOS Java Full Stack Developer

     ...Job Title: IOS Java Full Stack Developer Location: Denver, CO- locals or nearby states...  ...Must Skills: Java, Spring Boot, REST APIs, Angular/React, Swift/Objective-C Description...  ...role involves building backend services, web applications, and contributing to iOS... 
    Permanent employment
    Contract work
    Local area

    Quantum Technologies USA

    Denver, CO
    2 days ago

  • Senior Backend Software Engineer

    $130k - $171k

     ...an experienced Software Engineer to join our Sat OS team, which develops the high-level operating system and file transfer layer for the...  ...software servicesCreate and maintain comprehensive documentation for APIs and system architecturesImplement observability solutions for... 
    For contractors
    Work at office
    3 days per week

    Spire Global

    Boulder, CO
    3 days ago

  • Full Stack Software Engineer

     ...Our client is seeking a Full Stack Software Engineer for the Developer Platform team to build and enhance a customer-facing Portal. You...  ...TypeScript, Python, and Django. Design, build, and support RESTful APIs and backend services. Create intuitive, responsive user... 

    Eliassen Group

    Denver, CO
    4 days ago

  • Full Stack Web Developer

    $82.1k - $172.4k

    Job Title: Full Stack Web DeveloperJob Category: EngineeringTime Type: Full timeMinimum...  ...:CACI is seeking a Full Stack Web Developer to join our dynamic technology team. As a...  ...backend services• Build and maintain RESTful APIs that power our applications and integrate... 
    Contract work
    Work experience placement
    Flexible hours

    CACI International

    Denver, CO
    3 days ago

  • Full Stack Developer, Senior

    $86.9k - $198k

    Full Stack Developer, SeniorThe Opportunity:As a Senior Full Stack Developer at Booz Allen, you will lead the modernization of mission‑critical...  ..., such as Docker and KubernetesExperience with complex API ecosystems, such as FastAPT, REST, gRPC, or GraphQLExperience building... 
    Full time
    Contract work
    Part time
    Local area
    Remote work

    Booz Allen Hamilton

    Aurora, CO
    1 day ago

  • Full Stack Developer - 174086

    $90k - $110k

     ...Piper Solutions is seeking a Full Stack Developer to join a leading federal technology and...  ...agencies. This role will focus on developing web and backend applications and services for...  ..., leveraging Java/Spring-based REST APIs, modern web technologies, and a continuous... 

    ZP Group

    Colorado Springs, CO
    3 days ago