Updated for 2026

API Developer
Resume Example

A technically focused resume format for API developers building scalable interfaces. Highlight endpoint design, throughput, and developer experience improvements.

ATS Score
88
Excellent
Keywords · Impact · Format
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Jordan Voss

New York, NY  |  [email protected]  |  (555) 646-5238  |  linkedin.com/in/jordanvoss
Summary

API developer with 4 years of experience designing and building RESTful and GraphQL APIs for consumer and enterprise applications. Built APIs serving 8M requests daily with P99 response time under 120ms. Skilled in Node.js, Python, API versioning, and OpenAPI documentation.

Technical Skills
API Development: REST, GraphQL, gRPC, WebSockets, API Versioning
Languages: Node.js, Python, TypeScript, Go
Infrastructure: AWS API Gateway, Kong, Docker, PostgreSQL, Redis
Documentation: OpenAPI/Swagger, Postman, Redoc
Experience
API Developer - Synapse Financial
  • Designed and built 35 RESTful API endpoints serving 8M daily requests with P99 response time under 120ms
  • Implemented API rate limiting and authentication using Kong gateway, blocking 15K+ unauthorized requests daily
  • Created comprehensive OpenAPI documentation covering 85 endpoints, reducing partner integration time from 2 weeks to 3 days
  • Built a GraphQL API layer that reduced frontend data fetching by 60%, eliminating 12 redundant REST calls per page load
Backend Developer - Clearpoint Digital
  • Developed 22 API endpoints for a SaaS platform serving 45K active users with 99.9% uptime
  • Implemented Redis caching that reduced database load by 70% and improved average response time from 450ms to 85ms
  • Built webhook delivery system processing 500K events monthly with 99.7% successful delivery rate
  • Designed API versioning strategy that enabled 3 major version migrations with zero breaking changes for 120 API consumers
Education
B.S. Computer Science - New York University
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Why This Resume Works

1
Request volume and latency are specific

8M daily requests with sub-120ms P99 immediately shows you build APIs at production scale.

2
Developer experience highlighted

Documentation cutting integration time from 2 weeks to 3 days proves you think about API consumers.

3
Security and governance included

Rate limiting, authentication, and versioning show production API maturity beyond basic CRUD.

Section-by-Section Breakdown

Summary

Lead with request volume and response time. API developers are measured by throughput and reliability.

Skills

Name API styles (REST, GraphQL, gRPC) and infrastructure (API gateways, caching). Separate from programming languages.

Experience

Include request counts, response times, uptime, and consumer counts. API work has clear performance metrics.

Education

CS degrees are standard. API design is best demonstrated through endpoint counts and performance data.

Key Skills for API Developer Resumes

Based on analysis of thousands of job postings, these are the most frequently required skills:

REST APIs GraphQL API Design Node.js Python TypeScript API Gateway Kong Redis PostgreSQL Docker AWS OpenAPI API Versioning Rate Limiting Webhooks

Common Mistakes on API Developer Resumes

  • No request volume or latency data - API development without throughput and response time metrics lacks production credibility.
  • Listing endpoints without performance context - 'Built REST APIs' is generic. '35 endpoints serving 8M daily requests under 120ms P99' is specific.
  • Ignoring documentation and DX - API documentation and developer experience are competitive differentiators. Show integration time improvements.
  • No security or rate limiting mention - Production APIs need authentication, rate limiting, and input validation. Omitting these raises concerns.
  • Missing versioning strategy - API versioning is critical for consumer trust. Show how you handled breaking changes and migrations.

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