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Senior Api Developer Jobs in Washington (NOW HIRING)

540

Senior API Solutions Architect

Arlington, VA · On-site

540 is seeking a Senior API Solutions Architect to support a mission-critical technology ... Working with engineers, architects, cybersecurity teams, and mission stakeholders, you will define ...

USM

Urgent Need API Management

Washington, DC

API Management Location: Washington DC (Locals and Nearby Only) Duration: 6 +months Tasks ... The FEP Operations Center is seeking a senior developer to support for 2017 SOW029 Digital ...

System One

Oracle Cloud Integration Engineer

Vienna, VA · Remote

$57 - $76.25/hr

Hybrid - 3 days onsite, rest remote Overview Seeking a Senior API Developer with strong experience in Core Banking APIs and modern cloud technologies to support the design, integration, and ...

System One

Oracle Cloud Integration Engineer

Vienna, VA · Remote

$57 - $76.25/hr

Hybrid - 3 days onsite, rest remote Overview Seeking a Senior API Developer with strong experience in Core Banking APIs and modern cloud technologies to support the design, integration, and ...

RIT Solutions, Inc.

Java API Engineer

Washington, DC · On-site

$58.50 - $80/hr

RIT Solutions, Inc. is seeking a Senior Java API Engineer to support and enhance a REST-based API platform for mobile applications. This role involves maintaining backend services built with Java in ...

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Senior Api Developer information

See Washington salary details

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$69

$99

How much do senior api developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for senior api developer in Washington is $69.92, according to ZipRecruiter salary data. Most workers in this role earn between $59.38 and $78.41 per hour, depending on experience, location, and employer.

What is the difference between Senior Api Developer vs API Engineer?

AspectSenior API DeveloperAPI Engineer
Required CredentialsBachelor's in CS or related, experience in API developmentBachelor's or higher in CS, software engineering, or related field
Work EnvironmentSoftware development teams, tech companies, startupsDevelopment teams, cloud services, enterprise environments
Employer & Industry UsageTech firms, SaaS providers, e-commerceCloud providers, enterprise software, API platforms
Common Search & ComparisonOften compared for API design and development rolesFocuses on API infrastructure and deployment

While both roles involve working with APIs, a Senior API Developer primarily designs, develops, and maintains APIs, focusing on functionality and integration. An API Engineer often emphasizes the infrastructure, deployment, and scalability of APIs within larger systems. Understanding these distinctions helps employers and professionals choose the right role for their needs.

What is a senior API developer?

Senior API Developers are experienced software engineers who specialize in designing, building, and maintaining Application Programming Interfaces (APIs) that allow different software systems to communicate. They often lead technical projects, mentor junior developers, and ensure APIs are secure, scalable, and well-documented. Senior API Developers typically work with a variety of programming languages and frameworks, and collaborate closely with other teams to align API solutions with business goals.

What skills and qualifications are needed to thrive as a senior API developer?

To thrive as a Senior API Developer, you need advanced programming skills (often in languages such as Java, Python, or Node.js), deep understanding of API design principles, and experience with RESTful and/or GraphQL APIs, typically supported by a relevant degree or professional experience. Familiarity with API management tools (like Postman, Swagger, or Apigee), cloud platforms (such as AWS or Azure), and knowledge of authentication protocols (OAuth, JWT) are vital. Strong problem-solving abilities, effective communication, and leadership skills help in collaborating across teams and mentoring junior developers. These competencies ensure robust, scalable API solutions that meet business needs and integrate seamlessly with other systems.

Are senior API developers in demand?

Senior API developers are in high demand due to the increasing reliance on web services and integrations across industries. They are often required to have expertise in RESTful and GraphQL APIs, programming languages like Java or Python, and experience with cloud platforms, making their skills highly sought after in the job market.

How do senior API developers typically collaborate with product managers and frontend teams during the development process?

Senior API Developers play a key role in bridging backend systems with product and frontend teams. They work closely with product managers to interpret business requirements into technical specifications for APIs. Regular collaboration with frontend developers ensures that APIs are designed for usability, performance, and scalability, often involving code reviews, feedback sessions, and iterative testing. Effective communication and proactive problem-solving are essential to align API functionality with both business objectives and user experience.
What are the most commonly searched types of Api Developer jobs in Washington? The most popular types of Api Developer jobs in Washington are:
What are popular job titles related to Senior Api Developer jobs in Washington? For Senior Api Developer jobs in Washington, the most frequently searched job titles are:
What job categories do people searching Senior Api Developer jobs in Washington look for? The top searched job categories for Senior Api Developer jobs in Washington are:
Senior Api Developer jobs near you
Infographic showing various Senior Api Developer job openings in Washington as of August 2026, with employment types broken down into 79% Full Time, 7% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $145,425 per year, or $69.9 per hour.

Senior Node.js API Developer with Rules engine

Accord Technologies Inc.

Sterling, VA • On-site

$50.75 - $65.50/hr

Contractor

Re-posted 29 days ago

Job description

Senior Node.js API Developer with Rules engine
Locations: Sterling, VA and  Nashville, TN
Position type: W2 contract. 

We are seeking a highly experienced Senior Node.js API Developer with Rules engine with expertise in building and maintaining scalable, secure, and efficient backend systems. The ideal candidate will be responsible for designing, developing, and optimizing RESTful APIs and microservices, collaborating with cross-functional teams to deliver high-quality solutions, and ensuring the performance and security of our backend infrastructure.

The Role

Responsibilities:

  • Design, develop, and maintain RESTful APIs and microservices using Node.js and Express.js.
  • Good development experience on Node JS and is primarily a middleware/ backend development.
  • Extensive experience on Rules Engine is needed.
  • Experience on react as well. Good knowledge on API , JS and AWS architecture solutioning.
  • Write clean, well-documented, and efficient code adhering to best practices.
  • Collaborate with front-end developers, product managers, and other stakeholders to deliver integrated solutions.
  • Optimize application performance, scalability, and security.
  • Implement authentication, authorization, and data validation mechanisms.
  • Conduct code reviews and mentor junior team members.
  • Integrate third-party APIs and external services.
  • Deploy and monitor applications using cloud platforms such as AWS, Azure, or Google Cloud.
  • Build and maintain CI/CD pipelines for automated testing and deployment.
  • Document API designs and technical specifications.
  • Stay updated with the latest industry trends and incorporate innovative solutions.

Must Have skills:

  • 7+ years of professional experience in Node.js and rules engine development.
  • Strong proficiency in JavaScript and TypeScript.
  • Extensive experience with Express.js or similar frameworks.
  • Solid understanding of RESTful API principles, GraphQL (preferred).
  • Experience with microservices architecture and containerization (Docker, Kubernetes).
  • Proficiency with databases such as MongoDB, MySQL, PostgreSQL.
  • Knowledge of authentication/authorization protocols (JWT, OAuth).
  • Hands-on experience with cloud deployment and serverless technologies.
  • Familiarity with version control tools like Git.
  • Excellent problem-solving and communication skills.
  • Ability to work in a fast-paced, Agile environment.

Preferred Skills and Experience:

  • Experience with DevOps tools and CI/CD pipelines.
  • Knowledge of GraphQL, WebSockets, or real-time communication protocols.
  • Experience with monitoring and logging tools (Prometheus, Grafana, ELK).