13,434 api developer jobs at 5,191 companies in United States

PromotedHiringCafe
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
1w
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Senior API Developer
Tacoma, Washington, United States
$100k-$160k/yr OnsiteFull Time
ValidaTek
ValidaTek: Provides IT modernization and systems engineering for federal agencies.
7+ YOE7+ years API development experience, strong API design and security knowledge, proficiency with Java/Python/JavaScript and frameworks, CI/CD and testing experience, DoD clearance preferred.
Java, Python, JavaScript, Spring, Flask, Node.js, OAuth 2.0, JWT
1mo
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API Engineer
Scott Air Force Base, Illinois, United States
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
Experienced backend/platform engineer designing, deploying, and operating enterprise API platforms; Java or Python; Docker, Helm, Kubernetes, GitOps; API gateways and cloud (AWS/Azure/GCP); Secret clearance; HS diploma or GED.
Java, Python, Apigee, Gravitee, Kong, AWS API Gateway, Mulesoft, Docker, Helm, Kubernetes, GitOps, HTTP, gRPC, WebSockets, AWS, Azure, GCP, Git, Jenkins, JIRA, Confluence, Nexus, Bitbucket, SQL, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring Boot, Spring Data, Kafka, RabbitMQ
1mo
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API Engineer
Scott AFB, Illinois, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
Backend/platform engineering with Java or Python, experience operating API gateways (Apigee, Kong, Mulesoft, AWS API Gateway), DevOps (Docker, Helm, Kubernetes, GitOps), cloud (AWS/Azure/GCP), Git/Jenkins/JIRA, and eligible for Secret clearance; HS diploma/GED required.
Java, Python, Apigee, Gravitee, Kong, AWS API Gateway, Mulesoft, Docker, Helm, Kubernetes, GitOps, HTTP, gRPC, WebSockets, AWS, Azure, GCP, Git, Jenkins, JIRA, Confluence, Nexus, Bitbucket, SQL, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring Boot, Spring Data, Kafka, RabbitMQ
2d
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Senior API Developer
Maryland, United States
OnsiteFull Time
Infinite Computer Solutions
Infinite Computer Solutions: Provides digital engineering and IT transformation services for enterprises.
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
1w
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Intermediate API Developer
Mount Laurel, New Jersey, United States
$95k-$115k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
6+ YOEHands-on Java and Spring Boot experience to build REST APIs; knowledge of SQL, Hibernate/JPA, Spring Batch, Quartz, Git, Maven, CI/CD, JUnit, Agile, debugging and production support.
Java, Spring Boot, REST APIs, SQL, Hibernate/JPA, Spring Batch, Quartz, Git, Maven, CI/CD, JUnit, Agile
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
2mo
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Checkmate API Developer
Clayton or Kansas City or United States
RemoteFull Time
Husch Blackwell
Husch Blackwell: A nationwide firm providing industry-focused legal and litigation services.
2+ YOEMaster's in CS/Information Systems required; 2+ years software development experience. Must have .NET/.NET Core, C#, SQL Server, Entity Framework Code First, REST/JSON, Azure Function Apps, Microsoft Azure Web/Api/Logic Apps, ETL, unit testing, and Power BI experience.
.NET, .NET Core, C#, SQL Server, Entity Framework Code First, REST API, JSON, ETL, Azure Function Apps, Microsoft Azure Web Apps, Microsoft Azure Api Apps, Microsoft Azure Logic Apps, Microsoft Power BI
3mo
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Medecision Inc. - API Engineer I
United States
$80k-$95k/yr RemoteFull Time
Medecision
Medecision: Provides cloud-based care management and population health platforms.
2+ YOE2+ years backend engineering; API design; FHIR; cloud familiarity; BS in CS or related.
FHIR, Google Cloud Platform, CI/CD, API testing, SQL, NoSQL
1mo
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API Engineer, Mid-level
Charleston or United States
OnsiteFull Time
Modus21
Modus21: A business and technology consulting firm that helps organizations align strategy, processes, and technology to solve complex problems.
3+ YOEHS diploma, 3+ years backend/platform engineering with Java or Python, API platform experience (Apigee, Kong, AWS API Gateway, MuleSoft, etc.), 1+ year DevOps with Docker/Helm/Kubernetes/GitOps, cloud and API security experience, and ability to obtain DoD Secret clearance.
Java, Python, Apigee, Gravitee, Kong, AWS API Gateway, MuleSoft, Docker, Helm, Kubernetes, GitOps, OAuth, JWT, CI/CD, HTTP, gRPC, WebSockets, AWS, Azure, GCP, Git, Jenkins, JIRA, Confluence, Nexus, Bitbucket, SQL, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring Boot, Spring Data, Kafka, RabbitMQ
1w
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API Developer - Springfield, USA
Bangalore or United States
$48k-$168k/yr OnsiteFull Time, Contract
Photon: A technology employer hiring engineers to design and maintain cloud-native microservices and real-time systems.
10+ YOE10+ years backend experience with Java and Spring Boot, GCP, microservices, REST APIs, CI/CD, containerization, message brokers, and relational/NoSQL databases.
Java, Spring Boot, Spring MVC, Spring Data, Spring Security, GCP, GKE, Spanner, CRF, CI/CD, Docker, Kubernetes, REST, Kafka, RabbitMQ, MySQL, PostgreSQL, MongoDB
1mo
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Senior API Engineer (Python / AWS)
Fort Mill or Charlotte or Austin
$106k-$177k/yr HybridFull Time
LPL Financial
LPL FinancialNASDAQ: LPLA: Provides wealth management and brokerage services to financial advisors.
7+ YOE7+ years in software/API/cloud development; Python API development; AWS Lambda/API Gateway; Terraform; CI/CD; production support.
Python, AWS, Terraform, OAuth2, JWT, IAM, Amazon API Gateway, AWS Lambda, CloudWatch, OpenTelemetry
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
1mo
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API Senior Developer (R-00166)
United States
RemoteFull Time
True Zero Technologies: A veteran-owned technology delivering security and engineering services with a people-first culture.
5+ YOEBachelor's in CS/IT/Engineering/Cybersecurity; 5+ years API development (2+ at senior level); experience with REST/GraphQL/SOAP, OAuth2/JWT, cloud (AWS/Azure/GCP), containers (Docker/Kubernetes), Postman/Swagger/OpenAPI, SQL and NoSQL databases.
REST, SOAP, GraphQL, Postman, Swagger, OpenAPI, SoapUI, AWS, Azure, GCP, Docker, Kubernetes, Python, Java, JavaScript, C#, JSON, XML, OAuth2, JWT, PostgreSQL, MongoDB
1mo
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Senior API Engineer - Advisor I
Alpharetta or Omaha or Berkeley Heights
$90k-$158k/yr OnsiteFull Time
Fiserv
FiservNew York Stock Exchange: FI: Provides financial technology and payment processing services to institutions.
8+ YOE8+ years in Java/J2EE engineering, RESTful APIs, Spring, Azure, cloud–native services, CI/CD, DevSecOps, and cloud platforms; experience with relational/non-relational databases and messaging systems.
Java, J2EE, Spring, Spring Boot, REST API, Azure, OpenShift, PCF, Kafka, MQ, ESB, SQL, NoSQL, Splunk, CI/CD, DevSecOps
1mo
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API Integrations Developer
Denver, Colorado, United States
$119k-$133k/yr HybridFull Time
Colorado Access
Colorado Access: Provides managed care and health insurance for Medicaid members.
4+ YOEBachelor's in CS or related required; 4+ years backend experience (Python, Node.js, Java, or .NET); HL7 FHIR and X12 EDI experience; strong REST API, security (OAuth2, JWT, mTLS), SQL, and HIPAA knowledge; experience with cloud and CI/CD.
Python, Flask, FastAPI, Django, Node.js, Java, .NET, OpenAPI/Swagger, Postman, X12 EDI, HL7 FHIR, HL7 v2, CDA, EHRs, Docker, Kubernetes, GitHub Actions, Azure DevOps, Jenkins, ELK, Datadog, Prometheus, Grafana, AWS, Azure, GCP, SQL Server, Snowflake, Data Vault 2.0, pytest, JUnit, Pact, k6, Locust, OAuth2, JWT, mTLS, RBAC/ABAC, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Microsoft SharePoint
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
2d
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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
3w
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API Engineer (Remote)
Stafford or Alaska or California or Colorado or Connecticut or District of Columbia or Hawaii or Louisiana or Massachusetts or Minnesota or Missouri or Nebraska or Nevada or New Hampshire or New Jersey or New Mexico or New York or North Dakota or Oregon or Puerto Rico or Rhode Island or Vermont or Washington or Wyoming or United States
RemoteFull Time
Oxley Enterprises
Oxley Enterprises: Provider of enterprise IT solutions and organizational management consulting.
No specific skills, education, or experience listed in the job text; posting states remote US eligibility and includes benefits information.
1mo
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Senior Revit API Developer
United States
RemoteFull Time
GTP Software
GTP Software: Cloud-based software for MEP fabrication and construction workflow management.
5+ YOE5+ years software engineering (3+ building production Revit API applications). Strong C#/.NET, Revit add-in and desktop app experience, AI-assisted tooling experience, installer/packaging knowledge, and integration with backend services.
Autodesk Revit API, C#/.NET, Claude Code, Cursor, Copilot, Azure ServiceBus, MSI, Autodesk Platform Services, AutoCAD, Fabrication, BIM 360 / ACC, Navisworks
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)