Melek Inaç
Backend Developer | PostgreSQL & PL/pgSQL | SQL Optimization | Python / FastAPI | AI/ML
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Hakkında
Software developer with over four years of experience in enterprise backend systems, database development, and payment system integrations. Skilled in high-volume data processing, business logic implementation, and query performance optimization using PostgreSQL and PL/pgSQL. Responsible for production systems supporting more than 15,000 active devices and processing over 2 million transaction records daily, including cloud-based payment integrations between POS terminals and fiscal cash registers.
Project experience includes data preparation and feature engineering in Python, predictive modeling with XGBoost and LightGBM, and model deployment using FastAPI. Currently pursuing a master’s degree in Artificial Intelligence Engineering at İzmir Bakırçay University.
Deneyim
Software Developer at MEPSAN A.Ş. (2022-07 – Present)
- Developed complex SQL queries, PL/pgSQL functions, stored procedures, triggers, and views for PostgreSQL tables containing millions of records.
- Reduced the execution time of a query from approximately 5 minutes to 30 milliseconds through execution plan analysis and index optimization.
- Implemented daily and weekly partitioning for high-volume data and log tables.
- Developed cloud-based payment integrations between POS terminals and fiscal cash registers, contributing to workflows that reliably transfer payment transactions between devices and backend services.
- Developed real-time communication, transaction transfer, and remote management capabilities for more than 15,000 POS terminals and cash registers using Node.js, REST APIs, and WebSocket.
- Developed database business logic and integrations for sales, inventory, invoicing, and reporting workflows in KodX ERP; investigated production issues and implemented improvements.
Eğitim
Master’s Degree (Non-Thesis) in Artificial Intelligence Engineering – İzmir Bakırçay University (2026)
Bachelor’s Degree in Management Information Systems – Anadolu University (2022 – 2025)
Associate Degree in Computer Programming – Ondokuz Mayıs University (2019 – 2021)
