440 api developer jobs at 210 companies in Joppatowne, MD
2mo
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API Developer/Programmer
Aberdeen Proving Ground, Maryland, United States
$90k-$150k/yr OnsiteFull Time
2+ YOEBachelor's degree in a technical field and 2+ years experience. Experience with web/API development, MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java, cloud/containerization, information systems security, and Agile.
MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java
1w
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API Developer (Senior)
Baltimore, Maryland, United States
OnsiteFull Time
3+ YOEBachelor's in CS or related field (or 5 years' equivalent),3+ years computer experience,1+ year web/app development experience; knowledge of HTML,CGI,PERL,Javascript,Java,cloud and Salesforce.
HTML, CGI, PERL, Javascript, Java, Salesforce
1mo
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Senior Backend API Engineer
Linthicum, Maryland, United States
OnsiteFull Time
7+ YOEActive TS/SCI with polygraph required; 7+ years backend development experience with Python, RESTful APIs, Django/Flask, Docker, MariaDB/MongoDB; experience with Git, Jira, Confluence; strong troubleshooting and communication skills.
Python, Django, Flask, MariaDB, MongoDB, JSON, XML, Docker, Git, Jira, Confluence, AWS
2w
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API Lead
Baltimore, Maryland, United States
RemoteFull Time
Design, develop, and maintain REST APIs and enterprise integrations using FHIR/HL7, cloud (AWS preferred), and data mappings between JSON, XML, X12 and flat files.
REST, FHIR, HL7, AWS, JSON, XML, X12
1mo
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Application Engineer 4 (API)
Linthicum Heights, Maryland, United States
HybridFull Time
4+ YOETS/SCI with Polygraph required. Python, Docker, Django/Flask, MariaDB or MongoDB, REST and microservices experience. Minimum 4-12 years experience depending on degree.
Python, Docker, Django, Flask, MariaDB, MongoDB, ReST, AWS, JSON, XML, Jira, Confluence, Git
3mo
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Software Engineer 1 (API)
Linthicum Heights, Maryland, United States
$52-$107/hr OnsiteFull Time
7+ YOEU.S. citizenship and Top Secret/SCI clearance with appropriate polygraph required; 7 years SWE experience; Bachelor’s in Computer Science (or 4 additional years of SWE experience); strong Python, Django/Flask, ReST, and database skills.
Python, Django, Flask, MariaDB, MongoDB, PostgreSQL, ReST, JSON, XML, Swagger, AWS, Docker, Visual Studio Code, Jira, Confluence, Git
3d
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Developer Associate
Bethesda, Maryland, United States
$120k-$135k/yr OnsiteFull Time
2+ YOERequires 2–4 years in a developer-facing role, technical bachelor's degree or equivalent experience, coding proficiency, REST API knowledge, API testing, Git, issue tracking, and strong communication skills.
Claude Code, GitHub Copilot, Cursor, MCP, Python, JavaScript, Node.js, Java, REST APIs, webhooks, OAuth 2.0, API keys, Postman, Insomnia, Git, Jira, Asana, Swagger/OpenAPI, Redoc, Readme.io, CI/CD
2mo
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Salesforce Developer
Adelphi, Maryland, United States
OnsiteContract
2+ YOE2–4 years Salesforce development; Bachelor's in CS or INFO; Apex, Flows, LWC, APIs, Data Loader; Agile; strong problem-solving and communication.
Apex, Lightning Web Components, Salesforce Flows, APIs, Data Loader, Copado, Git
3w
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Developer, Applications
Westminster or Crawfordsville
$70k-$85k/yr OnsiteFull Time
2+ YOECollege degree or equivalent with 2+ years IT development/support experience; experience with ERP/WMS/TMS; strong Oracle PL/SQL, Linux, Python, JavaScript, and Git skills; barcode and API knowledge.
Oracle, PL/SQL, Linux, Python, HTML, JavaScript, Perl, C, TCP/IP, API, Git, VS Code
1w
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Software Engineer
Hunt Valley, Maryland, United States
$86k-$115k/yr HybridFull Time
5+ YOEBachelor's degree in computer science or related field, 5+ years software engineering experience, API and full-stack development experience, familiarity with Agile, testing, and cloud paradigms.
.NET (C#), SQL, HTML, CSS, JavaScript, NodeJS, Angular, React, Vue, Azure DevOps, Git, MS SQL Server, Typescript, REST API, HTTP, Java
1mo
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Software Engineer
Annapolis Junction, Maryland, United States
$96-$108/hr OnsiteFull Time
14+ YOEExperience developing complex software systems using Java and Spring Boot, Linux, web services/APIs, SQL, Git, and container technologies; TS/SCI with polygraph required.
Java, Spring Boot, Linux, API, SQL, Git, Docker, JavaScript, ReactJS, Apache Kafka, Apache NiFi, Docker Compose, Maven, Jira, Confluence, Atlassian
2mo
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Senior React Developer
Annapolis Junction or Columbia
$200k-$275k/yr HybridFull Time
12+ YOESenior full-stack developer proficient in React and Java/Spring Boot; experience migrating legacy systems; ability to work with Camunda and Pega workflows; strong REST APIs and Oracle/SQL skills.
React, Java, Spring Boot, Camunda, Pega, Oracle, SQL, REST API
1mo
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Junior Developer
Paradise, Pennsylvania, United States
$28-$34/hr OnsiteFull Time
Experience with API integration, databases, and coding in multiple languages (preferably PHP, Python, JavaScript). Familiarity with Jira, Git, Trello, QuickBase/Zoho, and comfortable using AI-assisted development tools.
PHP, Python, JavaScript, GitHub Copilot, Jira, Git, Trello, QuickBase, Zoho, Sage Intacct, REST APIs
6d
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Salesforce Developer
Millersville, Maryland, United States
RemoteFull Time
3+ YOE3–6 years Salesforce development experience; strong Apex, LWC, SOQL, integrations, asynchronous processing, API security, Data Cloud/Agentforce knowledge; Platform Developer I required; eligible for Public Trust clearance.
Salesforce Service Cloud, Experience Cloud, Omni-Channel, Knowledge, Apex, LWC, Platform Events, REST APIs, MuleSoft, Azure, Git, DevOps Center, Copado, GitHub Actions, Azure DevOps, Data Cloud, Agentforce, Einstein, SOQL, OAuth
2d
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Full Stack Engineer
Boston or Woodlawn or Dallas
$97k-$133k/yr HybridFull Time
1+ YOERequires one year of specialized experience equivalent to GS-11 developing APIs, software applications, and system integrations; collaborating across teams; and demonstrating core IT competencies.
HTML5, CSS3, JavaScript, MySQL, PostgreSQL, MongoDB, Application Programming Interfaces (APIs), USAJOBS, USA Hire, Microsoft Outlook
2mo
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Software Engineer (GC-3)
Annapolis Junction, Maryland, United States
$220k-$250k/yr OnsiteFull Time
15+ YOE12+ Mgmt15+ years of design and development experience; Master's in Computer Science or Computer Engineering; ITIL Certification; Python, CI/CD; AWS and API integration; TS/SCI with Polygraph clearance.
Python, Jenkins, GitLab, CodePipeline, AWS, API, CI/CD
1w
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Senior Software Engineer
Bethesda, Maryland, United States
OnsiteFull Time
8+ YOETop Secret/SCI clearance, Bachelor's degree with 8+ years (or Master's with 6+), proficiency in C#, API development, SQL Server, microservices, CI/CD, ETL, and Linux; experience with cloud, containers, and biometric systems preferred.
C#, SQL Server, Elasticsearch, GitLab, Jenkins, Docker, AWS, Lambda, CUDA, PyTorch, GraphQL, Python, Bash, Apache NiFi, Kafka, Linux, ETL, API
1mo
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Senior Software Engineer
Fort Meade, Maryland, United States
$170k-$240k/yr OnsiteFull Time
12+ YOEActive Top Secret (TS/SCI) with polygraph, US citizenship, Bachelor's in a technical discipline (or 4 years experience), 12+ years software development, strong Python, LLM and API integration experience, Git and Atlassian familiarity.
Python, LLMs, APIs, Git, Jira, Confluence
2mo
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Senior Software Developer (Top Secret Cleared)
Washington or Washington
$145k-$155k/yr OnsiteFull Time
8+ YOEActive Top Secret clearance with SCI eligibility required, 8+ years software development, experience with .NET, C#, Java, Python, JavaScript, SQL, APIs, secure coding, Agile, DevSecOps, and production support.
.NET, C#, Java, Python, JavaScript, SQL, APIs
5d
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Associate Appian Developer
Largo or Dayton or Washington
RemoteFull Time
1+ YOEBachelor's degree required; 1+ years software development; experience with Appian or low-code platforms, Agile, APIs and integrations; ability to obtain Public Trust; Appian Certified Associate Developer preferred.
Appian, REST, AWS, Azure
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