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API & SDK Engineer

Backend Freelance Remote

Job details

Not specified Salary
Remote Eligibility
Not specified Experience
Freelance Employment

About this role

Role overview Build the developer facing tools that let teams connect AI agents to websites and other products. The work spans APIs, client libraries, embedding options, and integration guidance, with an emphasis on making the first implementation straightforward and helping developers handle failures and future changes safely.

Responsibilities - Design and implement public APIs and client SDKs for agent integrations. - Create embedding tools and practical integration examples. - Handle loading states, errors, and version changes in client libraries. - Write setup guidance, technical documentation, and usage examples. - Gather developer feedback and use it to improve the integration experience.

Requirements - Experience designing APIs or SDKs for use by other developers. - Strong TypeScript or JavaScript skills. - Clear technical writing ability. - Careful handling of errors and backward compatibility.

Nice to have - Experience with developer tools, SDKs, SaaS developer platforms, or open source libraries.

Benefits and work setup - Remote contract with flexible hours. - Compensation starts at $4,500 per month. - Freelancers and solo agencies may continue working with their own clients.

Skills detected in the listing

TypeScriptJavaScript
Detected Nov 12, 2026
Last verified Nov 12, 2026

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