REST API Developer for Scalable Third-Party Integrations

CloudWave Digital

Freelance · Remote · Flexible hours

About the role

We are launching an integration hub that ties our billing system, CRM, and several internal services. The project demands a focused REST API Developer to design, implement, and secure the data pipelines that keep these platforms synchronized.

Key responsibilities

• Design and build scalable RESTful endpoints for billing and CRM data exchange
• Integrate internal APIs using NodeJS and ensure consistent data contracts
• Write efficient SQL queries and manage PostgreSQL schemas for transaction logging
• Implement authentication, rate limiting, and error handling across all services
• Document API specs and create quick-start guides for internal teams

Must-have skills

• Proven experience building production‑grade REST APIs
• Strong NodeJS and JavaScript expertise
• Deep knowledge of PostgreSQL design and optimization
• Understanding of OAuth2/JWT security patterns

Nice to have

• Familiarity with CI/CD pipelines for automated testing
• Experience with message queues (e.g., RabbitMQ, Kafka)