Saravanan M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I’m a Senior Backend & Integration Engineer with 10+ years of software engineering experience, specializing in APIs, microservices, SaaS platforms, third-party integrations, cloud systems, and AI-powered automation. My strongest work is taking complex business requirements and turning them into reliable production systems — especially when multiple APIs, databases, workflows, cloud services, and external platforms need to work together. I can help you with: • Backend architecture using Node.js, TypeScript, NestJS, Express, Java and Spring Boot • REST API and microservices development • Third-party API integrations, OAuth 2.0 and webhooks • Multi-tenant SaaS architecture • PostgreSQL, MySQL and MongoDB • Background processing, queues, retries and event-driven workflows • AWS and Google Cloud deployments • Docker, Kubernetes and CI/CD • Apigee, MuleSoft and enterprise API management • Payment, billing, CRM and business-system integrations • Workflow automation using tools such as Make, Zapier and Workato • AI agents, LLM integrations, LangChain/LangGraph and MCP-based systems • React/Next.js applications when a project requires full-stack ownership I’m particularly useful on projects where the challenge is not simply writing code, but deciding how the overall system should work. That may involve designing a multi-tenant architecture, integrating several external APIs, preventing duplicate processing, building reliable background jobs, creating secure OAuth flows, introducing automation, or preparing an existing system for production scale. I’m comfortable taking ownership across the full lifecycle: Requirements → Architecture → Development → Integration → Testing → Deployment → Production Support My background includes enterprise API development as well as building modern SaaS and automation platforms, so I’m equally comfortable working with established enterprise environments and fast-moving product teams. If you’re building a backend platform, SaaS product, API integration, automation system, or AI-enabled application and need someone who can think beyond individual tickets, I’d be happy to discuss the architecture and the best way to build it.