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Api Integration Jobs in Washington (NOW HIRING)

540

API Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Solutions Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Solutions Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Solutions Architect

Arlington, VA

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Solutions Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

540

API Solutions Architect

Arlington, VA · On-site

540 is seeking an API Solutions Architect to support a mission-critical technology modernization ... The ideal candidate enjoys solving complex integration challenges and creating practical standards ...

Jobtailor

Backend, Integration Engineer

Washington, DC · On-site

$120 - $180/hr

* Implement Databricks REST API write-back for labeled outputs, DataCard provenance records, and synthetic content outputs * Build and validate the Duality back-end integration: catalog intake form ...

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Api Integration information

What is an API Integration?

An API Integration job involves connecting different software systems using Application Programming Interfaces (APIs) to enable seamless data exchange and functionality. Professionals in this role develop, maintain, and troubleshoot API connections to ensure smooth communication between applications. They work with various APIs, authentication methods, and data formats like JSON or XML. Their responsibilities may include designing API workflows, optimizing performance, and ensuring security compliance.

What does a typical day look like for someone working in API Integration?

A typical day as an API Integration specialist involves collaborating with developers, project managers, and stakeholders to understand business requirements and translate them into technical specifications. You might spend your time building, testing, and troubleshooting connections between different software systems using APIs, as well as monitoring existing integrations for performance and reliability. Daily tasks often include reviewing API documentation, writing scripts or code, managing tickets, and coordinating with external partners to resolve integration issues. You'll also participate in team meetings to discuss project progress and identify any potential challenges. This role offers a dynamic, problem-solving environment where attention to detail and clear communication are key to success.

What are the key skills and qualifications needed to thrive in the API Integration position, and why are they important?

To excel in an API Integration role, you need strong programming skills—often in languages like JavaScript, Python, or Java—and a solid understanding of RESTful and SOAP web services, as well as experience with API documentation and troubleshooting. Familiarity with tools such as Postman, Swagger, and integration platforms like MuleSoft or Zapier is highly valued, and certifications in cloud platforms (AWS, Azure) can be advantageous. Effective problem-solving, attention to detail, and strong communication skills help you work collaboratively with cross-functional teams and resolve issues efficiently. These competencies are critical for developing seamless integrations that support business objectives while ensuring reliability and data security.

Is API integration a skill?

API integration is considered a technical skill essential for roles like API integration specialists, involving knowledge of programming languages, APIs, and data formats such as JSON or XML. Proficiency in tools like Postman and understanding of authentication methods are also important for effective integration work.

What does API integration work?

API integration work involves connecting different software systems through Application Programming Interfaces (APIs) to enable data exchange and functionality sharing. It requires understanding API protocols, authentication methods, and often involves coding in languages like JavaScript or Python to develop, test, and maintain these connections. This work is essential for automating processes and creating seamless software workflows.

What are popular job titles related to Api Integration jobs in Washington?

For Api Integration jobs in Washington, the most frequently searched job titles are:

What job categories do people searching Api Integration jobs in Washington look for?

The top searched job categories for Api Integration jobs in Washington are:

What cities in Washington are hiring for Api Integration jobs?

Cities in Washington with the most Api Integration job openings:

Api Integration jobs near you
Infographic showing various Api Integration job openings in Washington as of August 2026, with employment types broken down into 86% Full Time, 4% Part Time, 2% Temporary, and 8% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution.

Senior API Integration Developer

Basecamp Consulting & Solutions LLC

Reston, VA • On-site

$125K - $155K/yr

Full-time

This job post has expired 2 days ago. Applications are no longer accepted.

Job description

POSITION OVERVIEW
The Senior API Integration Developer owns the application side of the Customer's enterprise API gateway program: designing the service contracts that pass through the gateway, onboarding and refactoring upstream applications to be consumed through it, and extending gateway behavior with custom policy modules where the standard plugin set falls short. The work is hands-on development, from API design through containerized deployment and the regression validation that proves a migrated route behaves as it did before. This position requires an active Moderate Background Investigation (MBI) suitability determination at start.

RESPONSIBILITIES
  • Design, build, and maintain RESTful services and API contracts published through the enterprise gateway, including OpenAPI specifications and versioning
  • Onboard and refactor upstream applications to be consumed through the gateway, preserving functionality and external interfaces through the cutover
  • Implement token-based authentication and authorization in application code — OAuth 2.0 flows, JWT issuance and validation, claim and session handling
  • Develop custom gateway plugins and policy modules where standard functionality does not meet the requirement
  • Make the client-side and service-layer changes that gateway-mediated authentication and routing require
  • Package and deploy services as containers on Red Hat OpenShift and promote them through Customer environments under Government change control
  • Remediate vulnerable and out-of-support dependencies across supported applications, working findings with cybersecurity
  • Execute regression and smoke validation against every changed route and component before release
  • Produce interface designs, technical documentation, and architectural decision records for systems as delivered
  • Troubleshoot end to end across gateway, service, database, and client layers
  • Deliver in Agile ceremonies alongside Government product owners and other contractor teams

REQUIRED QUALIFICATIONS
  • Active MBI suitability determination, current and transferable as of your start date
  • U.S. citizenship, as required for Customer contractor personnel
  • Ten years of hands-on application development and systems integration in production, including three years supporting a Federal system subject to FISMA
  • Java and Spring Boot depth, building and consuming RESTful APIs and microservices at enterprise scale
  • Demonstrated integration of applications with an API gateway or reverse proxy, including routing, authentication, and rate limiting behavior
  • Working command of OAuth 2.0, OpenID Connect, JWT validation, SAML federation, and TLS in application code
  • Front-end development in ReactJS or Angular sufficient to change how a client authenticates against and consumes a gateway-fronted API
  • Container packaging and deployment on Kubernetes or Red Hat OpenShift
  • Experience migrating a production application onto new hosting or a new access path with functionality and external interfaces preserved
  • Dependency and vulnerability remediation across a supported application portfolio
  • Regression and smoke validation of changed components, with defensible evidence of what was tested
  • CI/CD pipeline work in Jenkins, GitHub Actions, or Azure DevOps, with Git-based source control
  • Relational database proficiency and SQL performance troubleshooting
  • Technical writing — interface control documents, design artifacts, and decision records that hold up under Government review
  • Bachelor's degree in Computer Science, Engineering, or Information Systems, or equivalent hands-on experience

PREFERRED QUALIFICATIONS
  • An active vendor certification on the program's API gateway platform, or willingness to earn it within 90 days of start with training provided
  • Development in Lua or Python sufficient to build custom gateway policy modules
  • Prior support to a Federal financial or tax administration program
  • Single sign-on integration against an enterprise identity provider such as ADFS, Ping Federate, or CA SiteMinder
  • GraphQL, SOAP, or event-driven interfaces alongside REST
  • An active cloud or platform certification such as AWS, Azure, or a Java or Spring credential
  • Contribution to an SSP or other Federal authorization artifact