Cobay Technology Private Limited

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. 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. Job Types: Full-time, Permanent Pay: ₹25,000.00 - ₹60,000.00 per month Benefits: Health insurance Provident Fund Work from home Ability to commute/relocate: Kovaipudur, Coimbatore, Tamil Nadu: Reliably commute or planning to relocate before starting work (Preferred) Work Location: In person Speak with the employer +91 6385291572