Senior Backend Developer (Node.js)OnHires • San Francisco, California, United States
Senior Backend Developer (Node.js)
OnHires • San Francisco, California, United States
[job_card.30_days_ago]
[job_preview.job_type]
- [job_card.full_time]
[job_card.job_description]️ Integrate third-party APIs (payment gateways, authentication services) with fault tolerance and retry logic. ️ Collaborate with frontend and DevOps teams to design cloud-native solutions (AWS / GCP / Azure) and containerized deployments (Docker / Kubernetes). ️ Write clean, maintainable code following SOLID principles and participate in rigorous code reviews. ️ Identify and resolve bottlenecks in distributed systems, including database latency, message queue tuning, and API performance. ️ Implement monitoring and logging (Prometheus, Grafana, ELK Stack) for production systems. ️ Conduct root cause analysis (RCA) for critical issues and implement preventive measures. ️ Advocate for test-driven development (TDD) and write automated tests (Jest, Mocha, Cypress). ️ Contribute to CI / CD pipelines (GitHub Actions, Jenkins) and infrastructure-as-code (Terraform). ️ Document technical designs, API specs (Swagger / OpenAPI), and system architecture. ️ 5+ years in backend development, with 3+ years of commercial Node.js experience. ️ Expertise in Node.js frameworks : Express.js, NestJS, Fastify. ️ Advanced proficiency in JavaScript / TypeScript (ES6+, async / await, streams). ️ Deep understanding of REST / WebSocket APIs and microservices architecture. ️ MySQL / PostgreSQL : Complex query optimization, replication, ORMs (Sequelize / TypeORM). ️ Redis : Cache strategies, pub / sub, and persistence configurations. ️ RabbitMQ / Kafka : Message queuing, event streaming, and dead-letter handling. ️ Experience with AWS / GCP / Azure (Lambda, EC2, S3, Cloud Functions). ️ Proficiency in Docker and basic knowledge of Kubernetes. ️ Familiarity with infrastructure-as-code (Terraform, CloudFormation). ️ Knowledge of serverless architectures (AWS Lambda, Serverless Framework). ️ Experience with GraphQL (Apollo Server, schema design). ️ Understanding of security practices (JWT, OAuth2, encryption). ️ Advanced English for clear technical documentation and team collaboration. ️ Strong problem-solving skills and attention to detail.
We’re looking for a Senior Backend Developer with 5+ years of professional experience and 3+ years of hands-on Node.js expertise to build and scale high-performance backend systems. You’ll work on complex technical challenges while collaborating closely with cross-functional teams.
✅ Responsibilities
Backend Development & Architecture :
- ️ Design, develop, and maintain scalable backend services and APIs using Node.js, focusing on performance, security, and reliability.
- ️ Architect REST / GraphQL APIs with best practices for rate limiting, idempotency, and versioning.
- ️ Implement event-driven architectures using message brokers (RabbitMQ, Kafka) and real-time systems (WebSockets / Socket.io).
- ️ Optimize MySQL / PostgreSQL databases through query tuning, indexing, and sharding strategies.
- ️ Build and maintain caching layers with Redis (e.g., cache invalidation, clustering, Lua scripting).
System Integration & Collaboration :
Performance & Troubleshooting :
Process & Best Practices :
✅ Technical Requirements
Core Skills :
Databases & Tools :
DevOps & Cloud :
Bonus Skills :
Soft Skills :
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