JavaScript/TypeScript API Developer -ONSITE in Chicago

We are seeking an experienced Javascript/Typescript API Integration Developer to design, develop, and maintain integrations between our platform and third-party APIs using JavaScript, TypeScript, and Node.js. The ideal candidate has strong experience building reliable REST API integrations, writing clean, maintainable code, and delivering high-quality integration solutions.

Experience with workflow automation platforms such as n8n, Zapier, or Make is a plus, particularly for building reusable automation workflows and custom connectors.

Responsibilities

• Design, develop, and maintain scalable API integrations using JavaScript, TypeScript, and Node.js.
• Build robust integrations with REST APIs, including authentication, pagination, rate limiting, retries, and error handling.
• Develop clean, modular, and maintainable code following modern software engineering best practices.
• Create reusable libraries and integration components that can be leveraged across multiple projects.
• Write unit and integration tests using tools such as Playwright or Jest.
• Optimize API interactions through JSON transformation, schema validation, batching, caching, and retry strategies.
• Troubleshoot integration issues and improve performance, reliability, and scalability.
• Collaborate with product managers, QA engineers, and other developers throughout the software development lifecycle.
• Produce clear technical documentation for APIs, integration workflows, and implementation details.
• Follow best practices for secure credential management, dependency management, and application security.
• Contribute to CI/CD pipelines and deployment automation.

Nice to Have

• Build and maintain automation workflows using n8n, Make, Zapier, or similar workflow automation platforms.
• Develop custom n8n nodes or connectors.
• Implement webhook-based integrations and event-driven workflows.
• Experience contributing to open-source integration projects.

Qualifications

Required

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.
• 3+ years of JavaScript and TypeScript development.
• 2+ years of Node.js development.
• Strong experience integrating RESTful APIs.
• Solid understanding of asynchronous programming and modern JavaScript patterns.
• Experience with Git and modern package management tools (npm or pnpm).
• Experience writing automated tests using Jest, Playwright, or similar frameworks.
• Strong understanding of JSON, API payloads, and schema validation.
• Excellent debugging and problem-solving skills.

Preferred Qualifications

• Experience with workflow automation platforms such as n8n, Make, Zapier, or Power Automate.
• Experience building custom connectors or plugins for automation platforms.
• Familiarity with webhook-based integrations.
• Experience with SQL and/or NoSQL databases.
• Experience with Docker and CI/CD pipelines.
• Contributions to open-source projects or public GitHub repositories.
• Familiarity with OAuth2, OpenAPI specifications, and API documentation tools.