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  • Senior Backend Engineer - APIs, Data, and Scale

     ...and interest in other database technologies such as columnar systems. ~ Experience with scaling, performance, and benchmarking of APIs and data processing systems. ~ Fluency with tools such as Copilot, Cursor, Claude Code, Kiro and a track record of using them to build... 
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    Work visa

    Jellyfish

    Washington DC
    3 days ago

  • Staff Product Manager, Ranking & Data API (Developer Platform)

    $217k - $303.9k

     ...Staff Product Manager, Ranking & Data API (Developer Platform) Reddit is rapidly innovating and growing, and our Ranking and Data API team is at the forefront of this evolution. This is a unique opportunity to shape the future of how users interact with content and... 
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    Flexible hours

    Reddit

    Washington DC
    5 days ago

  • Senior Software Developer

     ...seeks a motivated, career and customer-oriented Senior Software Developer to join our team in Annapolis Junction, MD. This is an onsite...  ...-stack applications using Python (Django/FastAPI) for RESTful API logic and modern JavaScript frameworks for the UI, ensuring... 
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    Full time
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    MANTECH

    Annapolis Junction, MD
    3 hours ago

  • Full-Stack Developer (Python APIs + React/Angular UI)

    $114.75k - $155.25k

     ...Web Services (AWS), Angular, Application Programming Interface (API), Responsive UI, RESTful API Design Certifications: None...  ...Job Description: We are seeking a highly skilled Full-Stack Developer with strong experience in Python-based API development and modern... 
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    GDIT

    Silver Spring, MD
    3 days ago

  • API/Java/Python Developer, Journeyman

    API/Java/Python Developer, Journeyman Position Description CGI Federal has an exciting opportunity for an API/Java/Python Developer within our Intel sector advancing the national security mission through cutting edge technology. You must have a passion for keeping... 
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    Local area
    Arlington, VA
    a month ago

  • API Java Python Developer, Senior

    API Java Python Developer, Senior Position Description CGI Federal has an exciting opportunity for an API/Java/Python Developer within our Intel sector, advancing the national security mission through cutting-edge technology. We are seeking individuals with a passion... 
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    Local area
    Arlington, VA
    a month ago

  • Applications Programmer - Python / REST API Developer

     ...insurance marketplace, seeks Applications Programmers to design, develop, test, and maintain emerging software applications supporting...  ...Design, develop, test, and maintain web applications and APIs using Python and modern frameworks. Support development of... 
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    Internship

    ShiftPixy Resources Inc

    Baltimore, MD
    2 days ago

  • C++ Software Engineer (VISTA SDK), Telework, BS+14 yrs

     ...Job Description Job Description Requirements C++ experience Python experience Strong understanding of API design Experience writing software libraries Experience with Docker or other containerization Experience with git & GitLab runner or other CI... 
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    Link, LLC

    Annapolis Junction, MD
    7 days ago

  • Cloud API Developer|Req#3796

    Description   ActioNet is seeking a highly skilled Cloud API Developer with expertise in AWS native services and proficiency in Java to join our team. You will be responsible for designing, developing, and maintaining scalable cloud-based APIs that leverage AWS services... 
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    ActioNet, Inc.

    Suitland, MD
    22 days ago

  • Java API Developer

     ...Role: Java API Developer Location: Atlanta, GA/ Remote Client:   Novalink-  TAYS Inc   Position Description:   Responsible for designing, building, and maintaining APIs and backend services using Java programming language and related frameworks. This... 
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    Temporary work
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    INFT Solutions Inc

    Woodlawn, MD
    13 days ago

  • Senior Software Engineer (API)

     ...brokers, and insurance companies to configure benefits. We build APIs to handle B2B transactions with our insurance carrier and...  ...in C# on .NET 8 with WebAPI, MVC and Vue.js at the front-end. We develop software as simple as forms for data capture to Roslyn-based C#... 
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    Employee Navigator

    Bethesda, MD
    more than 2 months ago

  • Technical Facilities Integrator

    $85k

     ..., while coordinating system readiness and mission support activities across JHUAPL campus locations. In JAF, we are committed to developing innovative technical solutions that empower our staff, fostering an environment of creativity, autonomy, and independent thinking... 
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    Johns Hopkins Applied Physics Laboratory (APL)

    Laurel, MD
    50 minutes agonew

  • .NET Full Stack Developer (React)

     ...Title : .NET Full Stack Developer - React Location : Redmond, WA (Onsite) *****Open for Both (Full time and contact) - Locals...  ...applications using .Net technologies: C#, ASP.NET Core, and Web APIs • Building Azure services and integrating with Web Applications... 
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    Nexwave

    Washington DC
    1 day ago

  • Senior Software Developer

    $84.63k - $112.84k

     ...world and shape the future. The Role The Senior Software Developer is a hands-on role that contributes to translating product requirements...  ...complex and multi-tiered integration architecture between UIs, APIs, CI/CD pipelines, subsystems, and databases in non-production... 
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    Temporary work
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    Lumen

    Largo, MD
    2 days ago

  • Sr Software Developer

    $84.63k - $112.84k

     ...world and shape the future. The Role As a Senior Software Developer at Lumen, you will leverage cutting-edge technologies to design...  .... Python or GoLang is a plus. Build scalable and secure APIs and MicroApps for integration within complex systems. Collaborate... 
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    Lumen

    Rockville, MD
    4 days ago

  • Principal Backend Developer (DDOS)

    $96.8k - $223.4k

     ...preference for Java for control-plane/services). ~ Deep systems design expertise: concurrency, memory management, performance tuning, API design, consistency models, and distributed systems fundamentals. ~ Proven DevOps leadership at scale: CI/CD, automated testing,... 
    Temporary work
    Flexible hours

    Oracle Defunct

    Washington DC
    2 days ago

  • .Net Full Stack Developer Senior

     ...Net Full Stack Developer E-INFOSOL LLC is seeking a highly motivated .Net Full Stack Developer to join our innovative, customer-focused...  ....NET) Familiarity or experience with architecture styles/APIs (REST, RPC) Experience with front-end frameworks such as Javascript... 
    Full time
    Contract work
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    Local area

    E-INFOSOL LLC

    Washington DC
    3 days ago

  • Senior Application Developer (Washington)

    $140k - $145k

     ...Senior Application Developer This Jobot Job is hosted by: Adrionna Roy Are you a fit? Easy Apply now by clicking the Apply button...  ...relational database queries. Integrate and consume RESTful APIs. Assist with gathering requirements and defining project specifications... 
    Local area
    Flexible hours

    Jobot

    Washington DC
    1 day ago

  • GC016SWE2 - Mid Level Software Engineer - Cleared

     ...The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel...  ...requirements Experience integrating third-party software and APIs with ServiceNow using REST and SOAP Experience coding in... 

    NiSUS Technologies Corporation

    Annapolis Junction, MD
    more than 2 months ago

  • Software Developer

     ...MANTECH seeks a motivated, career and customer-oriented Mid-level Software Developer to join our team in Annapolis Junction, MD. This is an onsite position. This role supports mission-critical Federal programs by designing, engineering, and analyzing complex... 
    Full time
    Work at office

    MANTECH

    Annapolis Junction, MD
    3 hours ago

  • Full Stack Java Developer

     ...Full Stack Java Developer At Agile Defense we know that action defines the outcome and new challenges require new solutions. That's...  ...Skills: 3+ years of Java development experience (backend logic, APIs, integrations). Proficiency in JavaScript for frontend... 

    Agile Defense

    Suitland, MD
    3 days ago

  • Senior Full Stack Developer (React + Python)

     ...Job Description Job Description Senior Full-Stack Developer (React + Python)   JOB SUMMARY Covalent Solutions (Covalent) is seeking...  ...in React combined with hands-on experience developing back-end APIs, managing databases, and deploying applications in the cloud.... 
    Full time
    Work experience placement

    Covalent Solutions, LLC

    Bethesda, MD
    6 days ago

  • Software Engineer (Backend Application Engineer)

     ...solutions and integrating architecture. The candidate will design, develop, and analyze overall architecture. The candidate will be...  ...languages. Three years of experience integrating web services using APIs (i.e. JSON, RESTful, Django, Python, MongoDB) Strong... 

    ASHAEL TEK SOLUTIONS LLC

    Columbia, MD
    29 days ago

  • Software Engineer, Platform - Baltimore, USA

    $140k - $200k

     ...analytics, subscriptions, new products, text to speech, and external APIs. This is a key role and ideal for someone who thinks...  ...to complete them within 1 week. What Yo u' ll Do Design, develop, and maintain robust APIs including public TTS API, internal APIs... 
    Work at office

    Speechify

    Baltimore, MD
    14 days ago

  • Usability/Human Factors Engineer 2

    $10k

     ...is rare within our industry. We are seeking a Usability/Human Factors Engineer 2 to join the software development team who will develop and sustain integrated, feature-rich capabilities that promote modernization of visualization and presentation tools. The software... 
    Hourly pay
    Full time
    Contract work
    Temporary work
    Work experience placement
    Summer work
    Immediate start

    Wyetech

    Annapolis Junction, MD
    7 days ago

  • Usability/Human Factors Engineer

    $110k

     ...military services. Job Description: Seeking a Usability/Human Factors Engineer 2 to join the software development team who will develop and sustain integrated, feature-rich capabilities that promote modernization of visualization and presentation tools. The software... 
    For contractors
    Work at office
    Flexible hours

    Synergy ECP

    Annapolis Junction, MD
    25 days ago

  • Usability/Human Factors Engineer Level 2 (BT)

    $140k - $174k

     ...to support our customer in the Annapolis Junction area. Essential Job Functions: The Usability/Human Factors Engineer shall develop and sustain integrated, feature-rich capabilities that promote modernization of visualization and presentation tools. Provides application... 
    Full time
    Contract work
    Work experience placement
    Local area
    Flexible hours

    The Kenjya-Trusant Group , LLC

    Annapolis Junction, MD
    26 days ago

  • Summer 2026 Software Engineering Intern

     ...interns to work hands-on with cutting-edge technology, contribute to meaningful projects, build strong relationships with coworkers, and develop strategic problem-solving skills. Our program is highly selective, hosting only a handful of interns each year, ensuring... 
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    AV

    Annapolis Junction, MD
    4 days ago

  • Usability/Human Factors Engineer - Level 2 (AE25051509XSE)

     ...Experimental Psychology, Systems Engineering, Software Engineering, or a related field (Advanced degree preferred) Collaborate with developers, systems engineers, and managers to design intuitive, user-focused interfaces Research, analyze, and document user profiles,... 
    Full time
    Temporary work
    Local area

    Advantage Engineering & IT Solutions Inc

    Annapolis Junction, MD
    4 days ago

  • Mid to Senior Level Database Engineer

    $105k - $200k

     ...database design, development, implementation, information storage and retrieval, data flow and analysis. The DBE is responsible for developing a database structure that fits into the overall architecture of the system under development and has to make trades among data... 
    Contract work
    Work experience placement
    Flexible hours

    Belay Technologies

    Annapolis Junction, MD
    28 days ago