I will build a backend with sql for your saas or automation project

A
aliuzunkulaoglu
A
aliuzunkulaoglu
Ali U.
build a backend with sql for your saas or automation project
Full Screen
build a backend with sql for your saas or automation project

About this gig

I build backend systems using Python (FastAPI) and PostgreSQL from single API endpoints to full production-ready architectures.

Recent work includes:

  • GlobalOil a B2B SaaS platform for the fuel industry, with FastAPI + PostgreSQL, role-based access control (RBAC), cost calculators, and a moderated listings module
  • Masadan a B2B reservation platform with a transaction-safe reservation state machine, JWT authentication, and OpenAI-powered content moderation
  • LexAI a fine-tuned NLP classification system for legal Q&A, with a FastAPI + MySQL backend

I also designed and ran a live algorithmic trading system (TradingView webhook Flask Binance API), so I'm comfortable with systems that need to be reliable under real, live conditions not just demos.

What I offer:

  • Clean, well-structured API design
  • Secure authentication (JWT) and access control
  • Database schema design and optimization
  • Integration with third-party APIs (OpenAI, payment gateways, webhooks)
  • Clear communication I'll tell you honestly what's feasible and what isn't

I don't overpromise. If something is outside my experience, I'll say so upfront rather than after you've paid.

  • Programming language

    • Python

  • Expertise

    • Algorithms & Data structures
    • Localization
    • Operating systems
    • Design
    • Testing procedures

  • Frontend framework

    • Next.js
    • React.js

  • Backend framework

    • FastAPI
    • Flask
    • Node.js
    • Firebase
    • Spring Boot

  • AI & low/no code builders

    • Claude
    • Firebase Studio
    • Cursor

Get to know Ali U.

Ali U.

AI, Backend Engineer, Python, FastAPI, Trading Systems ,Automation

  • FromTurkey
  • Member sinceSep 2026

  • Languages

    English
I'm a backend/AI engineer specializing in Python and system integration. I've built a fine-tuned NLP classification system for legal Q&A (Llama 3.1-based), a B2B SaaS platform for the fuel industry with RBAC and cost calculators, and a B2B reservation platform with a transaction-safe state machine and OpenAI-powered content moderation. I also designed and ran a live algorithmic trading system — TradingView signals via webhook to Binance execution, handling real capital in production. I focus on reliable, well-structured backend systems and honest communication about scope and feasibility.

My Portfolio

Related tags