Back End Engineer

Backend Engineer - Integration Specialist

Company: Cobay Technology Private Limited

Location:

Experience:

Team:

🚀 About the Role

Senior Backend Engineer

As our Backend Engineer, you'll work on high-throughput systems processing millions of transactions daily, building RESTful APIs, implementing event-driven architectures, and ensuring our platform maintains 99.9% uptime while scaling to meet growing demands.

💼 Key Responsibilities

Backend Development

• Design and implement RESTful and GraphQL APIs for internal and external consumption
• Build robust webhook handlers for real-time event processing
• Develop authentication and authorization systems (OAuth 2.0, JWT, API keys)

System Architecture & Design

• Architect scalable microservices supporting a multi-tenant SaaS architecture
• Design event-driven systems using message queues for asynchronous processing
• Design systems capable of handling 10,000+ concurrent requests
• Build comprehensive monitoring, logging, and alerting systems

Collaboration & Leadership

• Collaborate with frontend teams to design optimal API contracts
• Mentor junior developers on backend best practices

🛠 Technical Requirements

• Backend Development

  : 2+ years building production APIs with Node.js and Express.js. Expert-level understanding of RESTful design, microservices architecture, and event-driven systems. Strong proficiency in JavaScript/TypeScript and asynchronous programming patterns.

• Database & Data Management

  : Expertise in both NoSQL (MongoDB - aggregation pipelines, indexing, sharding) and SQL databases. Experience with caching strategies (Redis), query optimization, and handling high-volume transactions (10,000+ concurrent requests).

• Integration & APIs

  : Proven experience building robust third-party integrations, webhook handlers, and API gateways. Strong knowledge of authentication patterns (OAuth 2.0, JWT), rate limiting, and API versioning

• Cloud & DevOps

  : Hands-on experience with AWS services (EC2, Lambda, S3, SQS, EventBridge), Docker containerization, and CI/CD pipelines. 

• Testing & Code Quality

  : Strong testing practices with 80%+ code coverage, experience with TDD/BDD methodologies. Proficient in Git workflows, code review processes, and maintaining high code quality standards using tools like ESLint and SonarQube.