GraphQL API Engineer - Node.js Specialist

Quantum Technologies. LLC; Sunnyvale (CA); Presencial; USD 150.000 - 210.000; Jornada completa

Descripción de la vacante

Quantum Technologies. LLC in Sunnyvale, CA seeks an experienced Software Developer specializing in GraphQL and Node.js to design, develop, and optimize scalable APIs and microservices.

The role focuses on schema design, federation or stitching, performance optimization with DataLoader, and robust backend integration across databases and REST/gRPC services. Collaboration with frontend teams and ongoing CI/CD improvements are essential.

Formación

• Strong GraphQL API development and Node.js hands-on experience.
• Experience with GraphQL schemas, resolvers, queries, mutations, and subscriptions.
• Knowledge of Apollo Server, Apollo Federation, DataLoader, and caching strategies.
• Experience with SQL/NoSQL databases and REST/gRPC integrations.
• Understanding of API security, performance optimization, automated testing, and microservices.

Responsabilidades

• Design, develop, and maintain GraphQL APIs, including schemas, queries, mutations, and subscriptions.
• Implement federation or stitching using Apollo Federation or similar.
• Optimize GraphQL performance using DataLoader, batching, caching, and query complexity controls to prevent N+1 issues.
• Integrate relational and NoSQL databases, including PostgreSQL, MySQL, MongoDB, and Redis.
• Integrate REST APIs, gRPC services, and third-party platforms into GraphQL data layers.
• Implement API security, including authentication, authorization, RBAC, rate limiting, and query depth restrictions.
• Troubleshoot and optimize API latency, throughput, scalability, and memory usage.
• Develop automated unit, integration, and end-to-end tests using Jest, Mocha, or Supertest.
• Collaborate with frontend teams to define API contracts and support web and mobile applications.
• Participate in code reviews, architecture discussions, and CI/CD improvements.

Conocimientos

GraphQL API development

Node.js

GraphQL schema design

Resolvers optimization

API security

Backend integration

CI/CD practices

Agile development

Unit/integration testing

Herramientas

Apollo Server

Apollo Federation

DataLoader

Caching strategies

PostgreSQL

MySQL

MongoDB

Redis

REST

gRPC

Git

CI/CD

Descripción del empleo

Quantum Technologies. LLC in Sunnyvale, CA seeks an experienced Software Developer specializing in GraphQL and Node.js to design, develop, and optimize scalable APIs and microservices.

The role focuses on schema design, federation or stitching, performance optimization with DataLoader, and robust backend integration across databases and REST/gRPC services. Collaboration with frontend teams and ongoing CI/CD improvements are essential.