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Fiverr Pro
English
$
USD
I will build a scalable rest API backend with fastapi, django or nodejs
Saqlain
About this gig
A backend that works in a demo is not the same as one that holds up under real load and real users.
I build REST API backends designed to scale from day one clean architecture, proper database design, and performance built in, not bolted on later.
WHAT I BUILD
REST APIs FastAPI, Django DRF, or Node.js. You pick the stack or I recommend the right one.
Auth & Security JWT, OAuth2, Role-Based Access Control. Secure by design.
Database Design PostgreSQL, MongoDB, MySQL. Proper schema, indexing, and query optimization.
Real-Time Systems WebSockets for live updates and bidirectional communication. Built a ride-sharing backend handling thousands of GPS updates with Redis Write-Behind caching cut DB load by 70%.
Cloud Deployment AWS, DigitalOcean, Docker, Nginx. Production-ready from day one.
WHAT YOU GET
Clean, documented source code Postman collection for all endpoints Deployment included (Standard & Premium) Handoff documentation
Message me with your project details before ordering I'll confirm scope and timeline first.
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Get to know Saqlain
Saqlain
Backend and AI Engineer LangGraph Agents RAG Pipelines
- FromPakistan
- Member sinceApr 2025
- Last delivery11 months
Languages
Urdu, English
I build production-grade backends and AI systems that actually scale.
3+ years engineering at a tech company and independently — working at the intersection of serious backend infrastructure and modern agentic AI.
Backend: FastAPI, Django, Node.js, PostgreSQL, Redis, WebSockets, AWS, Docker.
AI: LangGraph agents, Corrective RAG, vector search, OpenAI, Anthropic, Gemini.
Shipped results:
→ 40% accuracy boost via CRAG pipeline
→ 70% DB load cut with Redis Write-Behind caching
→ AI meeting assistant for 60+ min recordings
Reliable systems, clean code, real outcomes. Let's build.
My Portfolio
FAQ
Q1: What technologies do you use for backend development?
A: I use Python with Django and FastAPI to build clean, secure, and scalable backend systems. I also use LangChain for AI and chatbot integrations, and databases like PostgreSQL, and MySQL.
Q2: Can you integrate AI or chatbots into my project?
A: Yes! I specialize in LangChain-based AI chatbot integration and can connect your backend with AI models or services like OpenAI, Replicate, and more.
Q3: Do you offer web scraping services?
A: Absolutely. I provide advanced web scraping using BeautifulSoup, Scrapy, and Selenium ideal for collecting structured data from websites.
Q4: Can you secure my API with authentication?
A: Yes, I can implement JWT, OAuth2, or session-based authentication to secure your APIs and protect user data.
Q5: Will I get API documentation?
A: Yes! I provide detailed API documentation using tools like Swagger (OpenAPI) or ReDoc so your API is easy to understand and use.
Q6: What do I need to get started?
A: Just share your project idea, features you want, and any references or sketches. I’ll take care of the technical part and guide you through the process.
