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1,280 api developer jobs at 519 companies in Baltimore, MD

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1mo
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API Developer/Programmer
Aberdeen Proving Ground, Maryland, United States
$90k-$150k/yr OnsiteFull Time
SURVICE Engineering
SURVICE Engineering: Engineering services and survivability analysis for defense systems.
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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2mo
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Java API Developer
Herndon, Virginia, United States
HybridFull Time
NT Concepts
NT Concepts: Provides data and technology solutions for national security missions.
3+ YOEBachelor’s degree and 2–5 years of experience with Java, JavaScript, API-based software; TS/SCI with CI Poly clearance required.
Java, Spring Boot, JavaScript, REST APIs, GraphQL, SOAP, Postman, Swagger UI, Apache Kafka, NiFi, SQL, NoSQL, Git, AWS, Azure, GCP, Docker, Kubernetes
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4w
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Senior Backend API Engineer
Linthicum, Maryland, United States
OnsiteFull Time
Quevera
Quevera: Software engineering and cloud solutions for government and defense.
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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1d
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KONG/API GATEWAY SURGE ENGINEER
United States or Washington
HybridFull Time
Constellation West
Constellation West: Provides mission-critical technology services for federal government 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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1w
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eGRC Senior API Developer
Herndon, Virginia, United States
RemoteFull Time
ShorePoint
ShorePoint: Provides cybersecurity and risk management services for federal agencies.
10+ YOEBachelor's degree, 10+ years relevant experience (≥5 years development/scripting, ≥2 years cybersecurity operations), SOAR development, scripting, GitHub, RMF knowledge, US citizenship and ability to obtain security clearance.
SOAR, RegScale, Axonius, GitHub, Microsoft Visio, Tines, Splunk Phantom, Robotic Process Automation (RPA)
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3w
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Senior MuleSoft API Developer
United States or McLean or Columbus
RemoteFull Time
Credence
Credence: Provides technology and management solutions to federal government agencies.
5+ YOEBachelor's in CS or related, 5+ years MuleSoft Anypoint Platform experience, active MuleSoft Developer and DoD 8570 IAT 1 credentials, EMR not required; experience with DataWeave, REST, and SOAP, Agile environment experience.
MuleSoft Anypoint Platform, DataWeave, REST APIs, SOAP
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1w
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Application / API Lifecycle Automation Developer
Herndon, Virginia, United States
$160k-$195k/yr RemoteFull Time
BDR Solutions
BDR Solutions: Provider of IT, engineering, and consulting for federal agencies.
5+ YOE5+ years designing and delivering API lifecycle automation, developer portals, CI/CD integrations, Zero Trust API security, and observability with documented automation metrics.
AppDynamics, ELK, OpenTelemetry, Backstage, Stoplight, Kong Dev Portal, Apigee Developer Portal, Kong, Apigee, MuleSoft, Azure API Management (Azure APIM), AWS API Gateway, CI/CD
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2w
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API Gateway Engineer
Quantico or Washington
$104k-$166k/yr RemoteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
8+ YOEActive Top Secret clearance, DoD 8570 certification (e.g., CISSP or Security+), extensive API Gateway experience, familiarity with Remedy/Service Now/JIRA, SOAP/REST/XML/JSON, SAFe agile, and gateway administration/operations.
API Gateway, Gateway Migration Utility, SiteMinder, Remedy, Service Now, JIRA, SOAP, RESTful, XML, JSON, Mulesoft, SAFe
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23h
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Application / API Lifecycle Automation Developer
Washington, District of Columbia, United States
$145k-$165k/yr RemoteFull Time
West 4th Strategy
West 4th Strategy: Provides technology and professional services to federal government agencies.
7+ YOE7+ years designing and maintaining automated API onboarding and lifecycle workflows, configuration-as-code, developer portal integrations, CI/CD pipelines, and Zero Trust governance; bachelor's degree and ability to obtain IRS background investigation required.
CI/CD, API Gateway, Developer Portal, Configuration-as-code, EAGMO
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2w
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API Gateway Engineer
United States or Quantico or Washington
$112k-$179k/yr RemoteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
7+ YOEActive TS clearance, DoD 8570 certification (e.g., CISSP or Security+), deep API Gateway experience, exposure to ITSM tools (Remedy, Service Now, JIRA), familiarity with SOAP/REST/XML/JSON, and SDLC/project management knowledge.
API Gateway, Gateway Migration Utility, SiteMinder, Remedy, Service Now, JIRA Help Desk, Mulesoft, SOAP, RESTful, XML, JSON, SAFe
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6d
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Senior API Platform Engineer
Reston, Virginia, United States
OnsiteFull Time
Akumen
Akumen: Provides technology, cybersecurity, and data services to federal agencies.
7+ YOEBachelor's or equivalent,7+ years in enterprise API management/platform engineering, experience with API gateways, REST/JSON/XML/OpenAPI, CI/CD, cloud and container deployments, Kubernetes/OpenShift, and federal security clearance eligibility.
Kong, IBM webMethods, Apigee, MuleSoft, Azure API Management, AWS API Gateway, IBM API Connect, WSO2, Tyk, REST, JSON, XML, OpenAPI, Kubernetes, OpenShift, Docker, Azure, AWS, CI/CD, Git, AppDynamics, ELK, Grafana, OpenTelemetry
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1mo
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Senior API Systems Engineer
Sterling, Virginia, United States
$150k-$254k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
10+ YOEU.S. person with Top Secret/SCI polygraph clearance, 10+ years' relevant experience, Bachelor’s or Master’s in a STEM field, Security+ CE (DoDD 8140), 5+ years API gateway experience, proficiency with Java/Python/C#, cloud (AWS/Azure/GCP), Docker/Kubernetes.
Java, Python, C#, AWS, Azure, Google Cloud Platform, Docker, Kubernetes, Istio, Linkerd, MuleSoft, Apigee, Broadcom API, ServiceNow, Windows, Linux
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2d
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API Developer/Data Engineer Managing Consultant-Fraud/AI
McLean or New York City or Arlington or United States
$130k-$216k/yr HybridFull Time
Guidehouse
Guidehouse: Provides management and technology consulting services to diverse organizations.
5+ YOEUS citizen able to obtain Public Trust,5+ years in data engineering/integration, proficiency in Python, Java/JS, .NET (C#), RESTful APIs, XML, SQL/SQL Server, GCP, data formats (JSON, Parquet), and experience leading technical teams.
Python, Java, JS, C#, .NET, RESTful API, XML, SQL Server, SQL, CSV, TXT, JSON, Parquet, GCP, Apigee, Kong, Azure API Management, AWS API Gateway, LexisNexis, Oracle Mantas, Actimize, Fircosoft, Oracle Mantas, World-Check, Dow Jones, Chainalysis, Elliptic, TRM Labs
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2mo
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Tool/API Integrator
Springfield, Virginia, United States
$139k-$236k/yr OnsiteFull Time
Akima
Akima: Provider of mission-focused technical and administrative support for government agencies.
7+ YOEUS citizenship, ability to obtain Public Trust clearance, bachelor’s in CS/IT/SE, 7+ years in tool integration and API development, ServiceNow/CSDM experience, strong problem-solving and collaboration.
REST, XML, ETL, APIs, ServiceNow, CSDM (Common Service Data Model), Ins-Pi (YouDesign), EA Repository, metamodel
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3w
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Senior Application Developer (DAAS API GW)
Washington or United States
RemoteContract
Horizon Industries
Horizon Industries: Provides IT and management consulting services to government clients.
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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2mo
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Principal Engineer, API & MCP Platform
Reston or Somerville
$220k-$250k/yr HybridFull Time
VIA
VIA: Provides secure decentralized identity and data privacy software solutions.
10+ YOESenior-level principal engineer for API and MCP platform; hybrid role; Reston, VA or Somerville, MA; high ownership and hands-on leadership.
API design, MCP (Model Context Protocol), Semantic APIs, GCP, Vertex AI Context Caching, BigQuery, Snowflake, Apigee
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1mo
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Senior Software Engineer - API & MCP Platform
Bethesda or Waltham
$140k-$200k/yr HybridFull Time
ZoomInfo
ZoomInfoNASDAQ: GTM: Provides B2B contact data and sales intelligence software.
5+ YOEBachelor's or equivalent experience, 5+ years software development, 3+ years building RESTful APIs/microservices, expertise in Java and NestJS, OAuth 2.0/OpenID/JWT, API design and security, MCP experience.
Java, NestJS, Spring Boot, Spring Security, Maven, Gradle, OAuth 2.0, OpenID Connect, JWT, OpenAPI, Swagger, Model Context Protocol (MCP), AWS, GCP, Azure, Docker, Kubernetes, Kafka, RabbitMQ
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2w
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Staff Engineer - API Team
Washington or United States
$160k-$175k/yr RemoteFull Time
Democratic Data Exchange
Democratic Data Exchange: Facilitating secure, real-time voter data exchange for progressive campaigns.
Experienced software engineer with API and cloud experience (GCP preferred), strong systems and reliability skills, production shipping and mentorship experience, US work authorization, and willingness to serve on on-call rotation; bachelor's degree expected.
C#, .NET, React.js, PostgreSQL, Google Cloud Platform (GCP), CloudRun, Cloud Functions, Pub/Sub, BigQuery, ClickHouse, GitHub Actions, Docker, Terraform, Firebase
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1mo
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Principal Software Engineer (Python, CI/CD, AWS, API)
Fort Meade, Maryland, United States
OnsiteFull Time
Themis Insight
Themis Insight: Provides technical consulting and data analytics for national security.
15+ YOE12+ MgmtTS/SCI with Polygraph; Master's in CS/CE; 15 yrs design/development; 12 yrs leading teams; ITILv3; Python/CI/CD/AWS/API experience.
Python, Jenkins, GitLab, CodePipeline, AWS, API
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2mo
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Integration Architect and API Lead
Arlington, Virginia, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
7+ YOE7+ years in data integration or API development; MuleSoft integration with Salesforce and ServiceNow; API-led architecture; Secret clearance; HS diploma or GED.
MuleSoft, Salesforce, ServiceNow, APIs, Low-code/no-code
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