1,318 api developer jobs at 512 companies in Lutherville-Timonium, MD

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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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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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KONG/API GATEWAY SURGE ENGINEER
United States or Washington
HybridFull Time
Constellation West
Constellation West: A service-disabled veteran-owned women-owned small business providing cybersecurity and information solutions to federal agencies.
Expertise with Kong Enterprise or comparable API gateways, API gateway implementation and migration, gateway policies, plugin configuration, developer portals, API security; experience with Kubernetes, OpenShift, Docker, GitOps, CI/CD, OAuth/JWT/OpenID Connect; bachelor’s preferred.
Kong Enterprise, Kong, Apigee, IBM API Connect, MuleSoft, Azure API Management, AWS API Gateway, Kubernetes, OpenShift, Docker, GitOps, CI/CD, OAuth, JWT, OpenID Connect
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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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Backend API Developer
Arlington, Virginia, United States
$119k-$161k/yr OnsiteFull Time
General Dynamics Information Technology
General Dynamics Information TechnologyNew York Stock Exchange: GD: Provider of enterprise IT services and defense solutions.
8+ YOERequires a bachelor's degree in computer science or engineering or equivalent, 8+ years of relevant experience, U.S. citizenship, and Public Trust eligibility. Experience with scalable services, streaming, authorization, containers, cloud, and production operations.
REST, Kafka, Amazon Managed Streaming for Apache Kafka (MSK), Event Hubs, API gateways, service meshes, AWS Lambda, Azure Functions, WebSocket, server-sent events
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API/Java/Python Developer, SME TS Clearance REQUIRED
Arlington, Virginia, United States
$88k-$191k/yr OnsiteFull Time
CGI Federal
CGI Federal: U.S. technology and professional services serving federal agencies with IT consulting and mission solutions.
10+ YOETS/SCI eligible with CI Poly; proficiency in Java and Python and related frameworks; API design and integration experience; database, cloud, containerization, Git, Agile experience; Bachelor's or 10+ years experience.
Java, Python, Spring Boot, Flask, Django, REST, GraphQL, SOAP, Postman, Swagger UI, PostgreSQL, MongoDB, MySQL, Git, AWS, Azure, GCP, Docker, Kubernetes
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Senior API Solutions Architect
Arlington, Virginia, United States
OnsiteFull Time
540
540: Private technology consulting firm building secure software, cloud, data, and AI systems for federal government missions.
9+ YOE9+ years in API architecture/integration; experience with enterprise API gateways, OpenAPI/Swagger, API governance, security (OAuth2/OpenID Connect/JWT/PKI), cloud-native integrations, and mentoring teams.
Apigee, Gravitee, OpenAPI, Swagger, JSON Schema, OAuth 2.0, OpenID Connect, JWT, PKI, Kubernetes, Docker, Istio, Linkerd, CI/CD
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Senior Application Developer (DAAS API GW)
Washington or United States
RemoteContract
Horizon Industries
Horizon Industries: Private IT and management consulting firm delivering modernization, cybersecurity, and AI-enabled solutions to federal agencies.
5+ YOEFive+ years developing applications; experience with APIs, low-code/no-code platforms, BPMN, MuleSoft; BS in related field; 8570 IAT Level I and MuleSoft certification required; active Secret clearance.
Java, HTML, Microsoft .NET, AngularJS, JavaScript, SOAP, REST API, Web Based API, BPMN, Appian, Salesforce, Nintex, MuleSoft Anypoint Platform, Microsoft SQL Server
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GIS Data API Integration Engineer
Tysons or Virginia
RemoteFull Time
Integral Federal
Integral Federal: Private federal contractor delivering digital transformation, systems engineering, and national-security solutions to defense, intelligence, and civilian agencies.
7+ YOEBachelor's degree in computer science or IT-related field and 7–10 years of experience with GIS data accuracy, spatial ETL, enterprise integration, spatial databases, geospatial standards, and GIS APIs.
ESRI, ArcGIS, REST, spatial databases, ETL
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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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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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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
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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Lead Software Engineer, Back End (Python, GO, API, AWS) (Cloud Operations Resilience Engineering)
McLean, Virginia, United States
$197k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
4+ YOEBachelor's degree and 4+ years software engineering experience; cloud (AWS/Azure/GCP), Python or Go, API and distributed microservices experience; strong communication and mentoring skills.
Python, Go, API, AWS, Microsoft Azure, Google Cloud, Open Source RDBMS, NoSQL
3w
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Lead Software Engineer, Full Stack (Java, API, AWS, AI)
McLean, Virginia, United States
$197k-$225k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
4+ YOE1+ MgmtBachelor's degree, 4+ years of software engineering experience, 1+ year of cloud computing experience, and proficiency with software development technologies. People management and advanced experience preferred.
Java, JavaScript, HTML, CSS, TypeScript, SQL, Python, Go, Docker, Kubernetes, AWS, Microsoft Azure, Google Cloud, Open Source RDBMS, NoSQL, Agile
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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Senior Developer
Rosslyn, Virginia, United States
$222k/yr OnsiteFull Time
ActioNet
ActioNet: Woman-owned IT solutions and managed services provider.
7+ YOESecret clearance, 7–12 years software development experience, bachelor’s degree in CS/IT, expertise in Python/Java/C#, Agile/SAFe, microservices and API development, cloud and system integration; strong leadership and troubleshooting skills; certifications preferred.
Python, Java, C#, Agile, Scrum, SAFe, microservices, API, AWS, Microsoft Azure, GitHub, Kubernetes, Docker, big data platforms, TOGAF 9
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
1w
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Senior Application Developer
Washington, District of Columbia, United States
$120k-$150k/yr OnsiteFull Time
OneGlobe
OneGlobe: Privately held IT consulting firm building Agile software and data solutions for the U.S. federal government.
10+ YOEBachelor's degree in a technical discipline, 10+ years of experience, low-code/no-code development, BPMN, APIs, Appian, Salesforce, Nintex, SQL Server, .NET, agile development, and relevant technical certification.
Application Programming Interfaces (APIs), Low-Code/NoCode Development Platform, Business Process Modeling Notation (BPMN), Appian, Salesforce, Nintex, Microsoft SQL Server, Microsoft .NET, Computer-Aided Software Engineering (CASE)