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ataulnasar/README.md

Hi, I'm Ata 👋

Senior Java Backend Engineer (9+ years) specializing in building production-ready SaaS backends, payment systems, and AI-powered applications.

🚀 What I Do

  • Design and build scalable Spring Boot APIs
  • Implement secure authentication (OAuth2, JWT, Keycloak)
  • Architect microservices systems
  • Build payment flows with idempotency and reliability
  • Integrate AI into real-world applications
  • Dockerize and deploy full-stack systems

💼 Services I Offer

  • Backend development for SaaS startups
  • Payment system implementation
  • API architecture & performance optimization
  • Legacy Java modernization
  • AI integration into existing platforms

🔥 Featured Projects

💳 Payment Platform (Mini-Swish)

A microservices-based payment platform with OAuth2 security, idempotent processing, and Dockerized deployment.

Tech: Spring Boot, Keycloak, PostgreSQL, Angular, Docker

➡️ View Project

📊 AI Portfolio Analysis App

Full-stack AI-powered portfolio commentary system with secure architecture and Flyway migrations.

Tech: Spring Boot, React, PostgreSQL, Docker, OpenAI API

➡️ View Project

🛠 Tech Stack

Java • Spring Boot • Microservices • REST APIs
PostgreSQL • Flyway • Docker • Keycloak
React • Angular
OpenAI API Integration

📫 Open to freelance backend opportunities (SaaS, payments, AI integrations)

Pinned Loading

  1. payment-platform payment-platform Public

    Microservices-based payment platform with OAuth2 security, idempotent processing, and Docker deployment.

    Java

  2. ai_portfolio_analysis ai_portfolio_analysis Public

    Full-stack AI-powered portfolio commentary app with Spring Boot, React, and Dockerized deployment.

    Java