Back End Engineer

2 weeks ago

Bhavnagar, Gujarat, India Cobay Full time

Backend Engineer - Integration Specialist

Company: Cobay Technology Private Limited

Location: Coimbatore, Tamil Nadu (On-site)

Experience: 2 - 4 years

Team: Platform Engineering Team

About the Role

We're seeking a talented Senior Backend Engineer with strong integration expertise to architect and build the core infrastructure of our multi-tenant SaaS platform. You'll be responsible for designing scalable backend systems and creating robust integrations with various third-party services and APIs.

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.

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