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621 api developer jobs at 286 companies in Maryland

1mo
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Senior API Developer
Maryland, United States
OnsiteFull Time
Infinite Computer Solutions
Infinite Computer Solutions: Global provider of digital engineering and IT services.
5+ YOE5+ years experience building REST APIs with Java, Spring Boot, Postgres SQL; experience with AWS, containers, CI/CD pipelines, and healthcare data (FHIR) preferred.
Java, Postgres SQL, Spring Boot, AWS, Argo/CD, EKS, Tekton, ReactJS, NextJS, FHIR
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2mo
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API Developer/Programmer
Aberdeen Proving Ground, Maryland, United States
$90k-$150k/yr OnsiteFull Time
SURVICE Engineering Company
SURVICE Engineering Company: Private engineering firm providing survivability, safety, modeling, testing, and software services to U.S. defense and government customers.
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
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API Developer (Senior)
Baltimore, Maryland, United States
OnsiteFull Time
rdts AG
rdts AG: German owner-managed digital agency developing customer portals, e-commerce solutions, software, and online marketing for businesses and institutions.
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
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2mo
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Senior Backend API Engineer
Linthicum, Maryland, United States
OnsiteFull Time
Quevera
Quevera: Veteran-owned custom software engineering firm serving government customers with mission-critical IT solutions.
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
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API Lead
Baltimore, Maryland, United States
RemoteFull Time
Global Alliant
Global Alliant: Minority-owned IT consulting and software development firm serving U.S. government agencies with digital modernization and AI solutions.
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
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API Backend Developer
Maryland, United States
OnsiteFull Time
One Federal Solution
One Federal Solution: Professional services firm providing contract support to government agencies.
6+ YOE6+ years developing enterprise applications with Python, Django, GraphQL, REST APIs, and relational databases; experience with AI extraction from scientific publications and accessibility (Section 508/WCAG).
Python, Django, GraphQL, REST APIs, SQL Server, MySQL, PostgreSQL, Git, GitHub, Docker, Linux, HTML, XHTML, CSS
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1w
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Application Engineer (API)
Linthicum, Maryland, United States
$225k-$235k/yr OnsiteFull Time
Lentech
Lentech: Employee-owned federal IT and mission-technical services contractor supporting civil, defense, and intelligence agencies.
4+ YOERequires active TS/SCI with FSP, Python, Docker, Django or Flask, MongoDB or MariaDB, REST endpoint development, and 4–12 years of experience depending on education.
Python, Docker, Django, Flask, MongoDB, MariaDB, JSON, XML, AWS, Jira, Confluence, Git
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1w
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26-2290: API Technical Lead - Baltimore, MD
Baltimore, Maryland, United States
$65k-$85k/yr OnsiteFull Time
Navitas Business Consulting
Navitas Business Consulting: Woman-owned IT consulting firm delivering cloud, AI, cybersecurity, and digital transformation services to government and commercial clients.
7+ YOEBachelor's degree or equivalent experience; 7+ years of IT experience; 3+ years as a technical lead; 2+ years with FHIR and healthcare interoperability; REST, SOAP, AWS, MuleSoft, Git, Jenkins, and API security expertise.
FHIR, HL7, RESTful APIs, SOAP, AWS, MuleSoft, Service-Oriented Architecture (SOA), JSON, XML, Git, Jenkins, MuleSoft Anypoint Platform, CloudHub, API Manager, OAuth 2.0, OpenID Connect, JWT, Docker, Kubernetes, CI/CD
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2mo
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Application Engineer 4 (API)
Linthicum Heights, Maryland, United States
HybridFull Time
Themis Insight
Themis Insight: Private consulting firm providing business, IT, and analytics solutions to National Security clients.
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
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3mo
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Software Engineer 1 (API)
Linthicum Heights, Maryland, United States
$52-$107/hr OnsiteFull Time
Wyetech
Wyetech: Computer engineering services firm supporting federal government missions.
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
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3w
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Developer Associate
Bethesda, Maryland, United States
$120k-$135k/yr OnsiteFull Time
Brivo
Brivo: Cloud-native physical security serving commercial and multifamily properties with access, video, visitor management, and intrusion solutions.
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
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3mo
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Salesforce Developer
Adelphi, Maryland, United States
OnsiteContract
CMT Services
CMT Services: Woman-owned consulting, management, and technology services firm serving federal, state, local, and commercial clients.
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
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1mo
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Developer, Applications
Westminster or Crawfordsville
$70k-$85k/yr OnsiteFull Time
Penguin Random House
Penguin Random House: Bertelsmann-owned global trade book publisher creating print, digital, and audio books for adult, children’s, and young-adult readers.
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
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1mo
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Software Engineer
Hunt Valley, Maryland, United States
$86k-$115k/yr HybridFull Time
Sinclair Broadcast Group
Sinclair Broadcast GroupNasdaq: SBGI: Diversified media providing local news and sports content.
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
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2d
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Risk Engineer
London or New York City or Amsterdam or Stamford or Los Angeles or Boston or Tokyo or Milan or Texas or Maryland
OnsiteFull Time
Capstone Investment Advisors
Capstone Investment Advisors: Private global asset manager serving investors with derivatives-based and complementary investment strategies.
3+ YOERequires 3–8 years in software engineering, quantitative development, or risk technology; strong Python, Java, SQL, APIs, databases, and data pipelines; and derivatives and risk analytics knowledge.
Python, Java, SQL, APIs, CI/CD
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2w
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Lead Sr. Software Engineer
Bethesda, Maryland, United States
$190k-$210k/yr HybridFull Time
Ideal Innovations
Ideal Innovations: Service-disabled veteran-owned professional services providing biometric, forensic, scientific, and IT support to government clients.
Requires C# development, technical leadership, WPF, .NET website development, REST APIs, relational databases, communication skills, U.S. citizenship, and current Top Secret/SCI Poly clearance.
C#, .NET, WPF, REST API, Microsoft SQL Server, RabbitMQ, Git, DevSecOps
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3mo
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Senior React Developer
Annapolis Junction or Columbia
$200k-$275k/yr HybridFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides IT consulting and government technology services.
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
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2d
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Web Developer, Enterprise Applications & Systems
Florida or Georgia or Illinois or Kansas or Kentucky or Louisiana or Maryland or Missouri or Ohio or North Carolina or South Carolina or Tennessee or Texas
RemoteFull Time
Clearwave Fiber
Clearwave Fiber: Private fiber internet provider serving residential and business customers across the United States.
Expert HTML, CSS, JavaScript, and PHP skills; WordPress enterprise website development; Figma implementation; eCommerce integrations; APIs; version control; web operations; SEO and performance optimization.
WordPress, Figma, HTML, CSS, JavaScript, PHP, APIs, Salesforce
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3d
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Cyber Security AI Engineer - Director
Baltimore, Maryland, United States
$85k-$150k/yr OnsiteFull Time
Morgan Stanley
Morgan StanleyNYSE: MS: Global financial services firm providing investment and banking solutions.
Bachelor's degree or equivalent experience, software development experience with Python, SDLC knowledge, LLM and Generative AI expertise, API or backend experience, and secure enterprise AI development knowledge.
Python, Large Language Models (LLMs), Generative AI, APIs, retrieval augmented generation, vector search, agentic AI, AI orchestration frameworks
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2w
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HMGP Engineer-PowerBuilder Developer
National Harbor, Maryland, United States
$87k-$182k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provider of specialized IT and mission-critical government services.
10+ YOEBachelor's degree and 10 years of application development experience; PowerBuilder, SQL, relational databases, Git, APIs, debugging, analytical, problem-solving, and communication skills required.
PowerBuilder, SQL, Microsoft SQL Server, Oracle Database, Git, REST, SOAP, Struts, Java, PowerServer, Agile, Scrum
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