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  • Backend Software Engineer — High-Impact, Scalable APIs

     ...firm located in Gaithersburg, MD, is seeking a Backend Software Engineer to design and develop scalable backend services. The role requires strong expertise in Java or Python, RESTful API development, and SQL. You'll work in a collaborative environment supporting high-... 
    Suggested

    Leidos

    Gaithersburg, MD
    1 day ago

  • Backend API Developer, Junior

    $80k - $120k

     ...Blu Omega is seeking a Junior Backend API Developer to join their team in building the enterprise data layer for the National Weather Service...  ...hands-on experience in FastAPI Familiarity with RESTful web services and source control management tools like Git Experience... 
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    Permanent employment
    Work experience placement
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    Local area
    Remote work

    Blu Omega

    Silver Spring, MD
    3 days ago

  • Low-Latency Backend Engineer: Target Tracking & APIs

     ...candidate, active, timeout, split/merge) Build and maintain REST APIs with strict latency SLOs (sub-20ms update paths) Implement persistent storage using MySQL and long-term archival in ClickHouse Develop composite fingerprint matching algorithms with policy-weighted... 
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    Work visa

    Digital Global Systems Inc

    Mc Lean, VA
    1 day ago

  • Journeyman UI/UX Engineer

    $107.9k - $195.05k

     ...software testing and automated test pipelines. designing and developing enterprise-grade web applications. modern frontend frameworks (e.g., React,...  .... Experience integrating UI components with RESTful APIs and microservices architectures. Experience with... 
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    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    1 day ago

  • Staff Backend Engineer - Remote, API & Systems Architect

    $125k - $145k

     ...and communicate effectively with various stakeholders. Ideal candidates will have significant engineering experience, particularly in API integration. Benefits include company-subsidized health insurance, flexible PTO, and a 401K matching program. The expected salary... 
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    Remote work
    Flexible hours

    Ad Hoc LLC

    Silver Spring, MD
    2 days ago

  • Web Application Developer (Magento/Adobe Commerce Experience Required)

    $100k - $120k

     ...Magento Developer The organization operates a high-volume online marketplace focused on providing collectors and investors with a wide...  ...architecture, extensions, and integrations Familiarity with APIs and third-party eCommerce integrations Strong project... 
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    latitude

    Montgomery Village, MD
    3 days ago

  • Sr Full Stack Software Engineer

    $135,000 per week

    At Lockheed Martin, we are committed to pioneering innovations in aerospace and defense. As a Sr Full Stack Software Engineer, you will lead the development and integration of cutting-edge software solutions that support both national security and technological advancement...
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    Lockheed Martin

    Gaithersburg, MD
    18 days ago

  • Backend Software Engineer

    $107.9k - $195.05k

     ...organization for data analysis, reporting, and operational decision-making. You'll design and build scalable backend services, develop RESTful APIs, integrate complex data sources, and ensure system reliability and performance in a Linux-based environment. Our primary... 
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    Local area
    Immediate start

    Leidos

    Gaithersburg, MD
    2 days ago

  • Backend Software Engineer

    $107.9k - $195.05k

     ...architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed because of the expertise,...  ...ll design and build scalable backend services, develop RESTful APIs, integrate complex data sources, and ensure system reliability... 
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    teKnoluxion

    Gaithersburg, MD
    2 days ago

  • Mid-Level Backend Software Engineer

    $105k - $125k

     ...on this effort will work with cross-functional teams to design, develop, and deploy impactful capabilities while helping shape the architecture...  ...role focuses on building scalable services, developing RESTful APIs, and supporting data-driven functionality within a Linux-based... 
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    Full time
    Remote work

    Ennoble First, Inc.

    Gaithersburg, MD
    3 days ago

  • Staff Engineer - Java (API/Software Development/Microservices)

    $100k - $230k

     ...technical roadmap modernizing our servicing organization with API first design. The ideal candidate is a self-starter that has deep...  ...of the solutions Utilize your expertise in designing and developing API's and microservices using graphQL, gRPC, Java, Python, Kafka... 
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    Hourly pay
    Work experience placement
    Local area
    Flexible hours

    GEICO

    Bethesda, MD
    3 days ago

  • Backend Software Engineer - High-Impact, Visible Work

    $87.1k - $157.45k

     ...to support a high-visibility, data-driven application. You will be responsible for backend development, including creating RESTful APIs and collaborating on data systems. Candidates should have a degree in computer science and experience in Java or Python. The role offers... 
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    COMFORT SYSTEMS

    Gaithersburg, MD
    1 day ago

  • Senior .NET Full Stack Developer

     ...Senior.NET Full Stack Developer Hybrid (Wednesdays in Silver Spring, MD) 9-12 months+...  ...Mastery – Expert in C#, ASP.NET Core, RESTful APIs, and modern front-end frameworks...  ...Design, develop, and maintain interactive web application systems Manage a large portfolio... 
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    RIT Solutions

    Silver Spring, MD
    3 days ago

  • Web Developer

     ...Talented Developer Wanted We are a healthcare-focused web marketing company located in Columbia, MD looking for a talented developer to join our team. Experience...  ...like Microsoft SQL Server Experience with RESTful API’s Bonuses: Experience with Sass or another... 
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    Local area

    Web Partners

    Columbia, MD
    1 day ago

  • Web Developer - SWE1

     ...Columbia, Maryland Type: Contract Job #3993 Title: Web Developer Location: Fort Meade, Maryland Clearance: TS/SCI...  ...: Design and implement features across the stack (API, UI, and data layer) with limited supervision; write clear technical... 
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    Contract work
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    Worldwide

    Cornerstone Defense

    Columbia, MD
    2 days ago

  • Sr. SQL Engineer

    $130k - $160k

     ...on this effort will work with cross-functional teams to design, develop, and deploy impactful capabilities while helping shape the architecture...  ...applications using object-oriented design principles. • REST API Development: Implement and maintain RESTful services to support... 
    Full time
    Remote work

    Ennoble First, Inc.

    Gaithersburg, MD
    5 days ago

  • Junior Front-End Software Engineer

    $125k - $157k

     ...and enhance high-visibility, collaborative web application tools used in the day-to-day...  ...within the IC. Cognitive data models to develop data transformations for easier consumption...  ...applications interfacing with REST-based APIs/services Full software development... 
    Contract work
    Remote work
    Worldwide

    Boeing Intelligence & Analytics

    Annapolis Junction, MD
    4 days ago

  • Sr. Software Developer (Frontend Developer)

     ...Sr. Software Developer (Frontend Developer) Location: Rockville, MD (Hybrid - one day per week on Fridays) (Only local...  ...Duration: 6 months C2H Responsibilities Develop Web Applications using REST APIs, Modern JavaScript Frameworks (e.g., jQuery, Angular, React... 
    Local area
    1 day per week

    Sparktek

    Rockville, MD
    3 days ago

  • Senior Front End Software Engineer

    $170k - $260k

     .... We will immerse you in the latest technologies. We will develop and support your own personalized training program to continue your...  ...: UI/UX architecture frontend development background API, ReactJS NodeJS, Java Spring Boot framework Javascript... 
    Full time
    Contract work
    Remote work
    Work from home
    Relocation package

    GliaCell Technologies LLC

    Columbia, MD
    4 days ago

  • Front-End Software Engineer 4

    $154.6k - $175.22k

     ...DOMEX Technology Platform as a Front-End Software Engineer 4 developing high-quality web applications for a DoD program using a modern technology...  ...front-end unit tests. Experience writing backend web API services. Experience coding in other languages such as... 
    Hourly pay
    Contract work
    Temporary work
    Casual work
    Immediate start
    Remote work
    Flexible hours
    Shift work

    Base2 Solutions

    Bethesda, MD
    3 days ago

  • Front-End Software Engineer

    $10k

     ...Front End Developer When you love the work you do, any mission is possible. Position: Front End Developer *** Active Clearance...  ...user interfaces and integrating UI functionality with backend APIs and databases. In this role, the candidate will also assist in... 
    Extra income

    Tiber Technologies Inc

    Annapolis Junction, MD
    3 days ago

  • UI Developer With AWS

     ...UI Developer With AWS Location: Richmond, Virginia/ Washington DC/ Maryland (Onsite) UI developer. The role entails building a browser...  .... The pages will be dynamic and would interact with AWS services and other APIs. 3+ years’ experience doing similar tasks.... 

    United IT

    Annapolis Junction, MD
    4 days ago

  • UI/UX Developer

    $90k - $130k

     ...is searching for a User Experience (UX) Developer to support our work for the National Center...  ...the data access user interfaces, public web site, and approval workflow for the dbGaP...  ...into the existing backend components and API's. In this role, the developer will be... 
    Full time
    Work at office
    Remote work

    Black Canyon Consulting LLC

    Bethesda, MD
    5 days ago

  • UI/UX Software Engineer - (RC-1)

    $180k - $235k

     ...depending on experience. About the Role: The Software Engineer develops, maintains, and enhances complex and diverse software systems...  ...-end development Experience with the following technologies: API, ReactJS, NodeJS, Java, Spring Boot framework, JavaScript,... 
    Bank staff

    legato

    Annapolis Junction, MD
    8 hours ago

  • Application Developer (Backend)

    $110k - $115k

     ...Application Developer II ROLE We need an experienced Back End Application Developer...  ...Boot microservices, enabling secure REST API communication, managing data access and persistence...  ...Experience supporting DoD or U.S. Navy web applications in AWS GovCloud or similar IL... 
    Full time
    Work at office
    Worldwide

    West 4th Strategy

    Bethesda, MD
    2 days ago

  • Mid-Level Frontend Developer

     ...Mid-Level Frontend Developer Location: Rockville, MD (Hybrid - one day per week on Fridays) (Only local candidates)...  ...Duration: 6 months C2H Responsibilities Develop web applications using REST APIs, modern JavaScript frameworks (e.g., jQuery, Angular, React... 
    Local area
    1 day per week

    Sparktek

    Rockville, MD
    3 days ago

  • Front End Developer (mid-level)

    Front End Developer (Mid-Level) Systems Integration & Development (SID), an award‑winning IT solutions...  ...Develop, maintain, and enhance responsive web applications and user interfaces that...  ...End development experience with .NET Web Api. Postgres database experience. Hands‑on... 
    Full time
    For contractors
    Remote work

    Astor-

    Mc Lean, VA
    2 days ago

  • Full Stack Java Developer

     ...entry-level software programmers, IT enthusiasts, Python/Java developers, data analysts/data scientists. We welcome candidates with all...  ...or software programming Spring boot, microservices and REST API's experience Excellent written and verbal communication skills... 

    SynergisticIT

    Columbia, MD
    3 days ago

  • Java Full Stack Developer (Senior)

     ...include performing the following tasks: Developing enterprise level application and custom...  ...Translate application requirements into web-based solutions using the recommended...  ...experience in developing and consuming RESTful APIs. Experience in Java/J2EE, REST web... 
    Temporary work
    Work experience placement
    Flexible hours

    Interclypse

    Annapolis Junction, MD
    3 days ago

  • Front End Developer

    Duties May Include: Design, develop, and maintain back-end services and APIs Collaborate with front-end developers and stakeholders to deliver end-to-end solutions...  ..., or STEM-related field 2+ years of experience with web design and front-end development Proven experience... 
    Contract work
    Temporary work

    Triglocon

    Mc Lean, VA
    1 day ago