I will build a scalable golang backend, rest API or microservices

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Flexgrew

About this gig

Need a backend that stays fast when traffic spikes? I build Go services that handle high concurrency on modest servers.


What I build:

  • REST and real-time APIs in Go (Fiber, Gin or net/http)
  • Microservices and event-driven systems with Kafka
  • PostgreSQL/MySQL schema design, query tuning and Redis caching
  • WebSocket services for chat, feeds and notifications
  • Auth, rate limiting, background workers and job queues
  • Docker builds and deployment on AWS or Google Cloud


Also available: porting slow Node.js or PHP endpoints to Go, and fixing bottlenecks in an existing Go codebase.


Recent work:

A community and social platform on Go/Fiber with Kafka for scalable fan-out, PostgreSQL and Redis, built to grow from launch to heavy traffic without a rewrite.


How I work:

API contracts first, tests on core logic, structured logging, and docs your team can follow. Simple systems are usually better systems, so I won't add microservices you don't need.


Send me your requirements or current architecture and I'll suggest the right approach.

Get to know Flexgrew

Flexgrew

AI SaaS, AI Agents and Chatbot Developer for Startups

5.0(25)
  • FromIndia
  • Member sinceSep 2021
  • Avg. response time1 hour
  • Last delivery1 year
  • Languages

    English, Hindi, Gujarati
Senior full-stack developer, 14+ years. I build AI products for startups: AI SaaS MVPs, AI agents, RAG chatbots, and voice and WhatsApp AI assistants. I run my own production WhatsApp Business SaaS with AI chatbots and multi-tenant architecture on Meta's official Cloud API. My last client kept me on for a full year building a complete social commerce platform. Stack: OpenAI, Claude, Python, Next.js, Node.js, Go, PostgreSQL, AWS. Senior code, daily updates, zero drama. Have an AI product idea? Message me for a clear plan.

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