GraphQL API Developer for Mission-Critical API Development

Keystone Digital

Part-time · Remote · Flexible hours

About the role

Keystone Digital is revamping the performance and reliability of its customer‑facing services. We need a GraphQL API Developer to redesign core data layers, tighten latency, and ensure uptime under load.

Key responsibilities

• Design and implement high‑throughput GraphQL schemas for existing services
• Refactor NodeJS resolvers to improve response times and error handling
• Integrate with existing REST APIs while maintaining backward compatibility
• Write automated tests and performance benchmarks
• Collaborate with front‑end React teams to align data contracts

Must-have skills

• Proven experience building scalable GraphQL APIs
• Strong NodeJS development background
• Solid understanding of REST API patterns
• Familiarity with performance profiling tools

Nice to have

• Experience with Apollo Server or similar GraphQL frameworks
• Knowledge of caching strategies (Redis, CDN)
• Previous work on high‑availability microservices