Browse categories
Explore
Fiverr Pro
English
$
USD
I will build high performance golang backend rest API with postgresql
Qamar Ul Islam
About this gig
Need an ultra-fast Golang backend that scales without high server costs?
Many Go APIs use slow, reflection-heavy ORMs or naive goroutines that crash and drop jobs on restart. I build production-grade Go backends with clean architecture, compile-time type safety, and database-level optimization.
Level 2 Seller | 50+ projects | 4.8 | ~70k+ LOC SaaS systems.
️ My Go Stack:
Architecture: Clean Go (Handler Service Repository) or DDD
Database: PostgreSQL with pgx v5 + sqlc (type-safe SQL, zero reflection)
Migrations: Goose version-controlled schema
Workers: Asynq + Redis queues with retries & dead-letter queues
Real-Time: WebSockets & Server-Sent Events
Security: JWT, RBAC, multi-tenant isolation
DevOps: Multi-stage Docker builds + docker-compose
Every Order Includes:
Clean, idiomatic Go source code
Swagger / OpenAPI docs
Unit & integration tests (testing / httptest)
Health checks (/healthz, /readyz) + structured logging
Docker ready for AWS, GCP, DigitalOcean, or VPS
Send me your specs and let's architect a backend that scales!
Get to know Qamar Ul Islam
Qamar Ul Islam
Senior Backend and AI Systems Engineer: Go, Python, Nextjs
- FromPakistan
- Member sinceMay 2023
- Last delivery8 months
Languages
Urdu, English
Hi, I'm Qamar! 👋
Senior Backend & Applied AI Engineer with 50+ completed orders & 4.8★ rating on Fiverr.
🚀 Core Expertise:
• AI & RAG Systems: Custom Pinecone/LangChain chatbots, MCP servers, and LLM integrations
• High-Performance Backends: Scalable Go (Golang), Python (FastAPI), and NestJS APIs
• Databases & Cloud: PostgreSQL, MongoDB, Redis, Docker, and multi-tenant architectures
• Full-Stack Web: Next.js, React, Stripe billing, and modern SaaS solutions
Clean code, fast delivery, and clear communication. Let's build your vision! 📩
My Portfolio
Other Software Development Services I Offer
FAQ
Why do you prioritize sqlc and pgx over GORM?
GORM relies heavily on runtime reflection and hides raw query execution, which often leads to slow N+1 query traps. sqlc compiles type-safe Go structs directly from your raw SQL queries, giving you native C-like PostgreSQL speed and compile-time safety.
How do you handle background processing and webhooks?
Unlike competitors who spawn raw in-memory goroutines (which lose data during server restarts), I implement Asynq backed by Redis. This guarantees task durability, configurable concurrency, and automatic retries.
Can you handle database schema migrations safely?
Yes. I integrate Goose migrations into the repository so your database schema can roll forward or rollback safely in CI/CD without manual SQL script execution.
Do you provide API documentation for my frontend team?
Yes! Standard and Premium packages include auto-generated Swagger / OpenAPI 3.0 documentation and Postman collections for instant frontend integration.
Can you integrate third-party APIs and payment processors?
Absolutely. I frequently integrate Stripe payments, Twilio VoIP/SMS, SendGrid email services, and external REST APIs with robust error handling and timeout protection.
