Senior GraphQL API Developer Needed for End-to-End Microservices Deployment

Keystone Digital

Freelance · Remote · Flexible hours

About the role

Keystone Digital is launching a security hardening initiative for its cloud‑hosted applications. We need a GraphQL API Developer to design, implement, and audit secure GraphQL endpoints that protect sensitive data while maintaining performance.

Key responsibilities

• Design and build robust GraphQL schemas and resolvers using NodeJS.
• Integrate existing REST APIs into GraphQL layer, ensuring proper authentication and authorization.
• Conduct security reviews, apply OWASP best practices, and remediate identified vulnerabilities.
• Write automated tests and documentation for all GraphQL services.
• Collaborate with DevOps to enforce secure CI/CD pipelines.

Must-have skills

• Proven experience building production‑grade GraphQL APIs.
• Strong knowledge of security patterns for cloud environments.
• Hands‑on expertise with NodeJS and React for client‑side testing.
• Deep understanding of REST API integration and token‑based auth.

Nice to have

• Familiarity with AWS security services (IAM, Secrets Manager).
• Experience with automated security scanning tools.