Open to opportunities

Tugay Sinan ERGÜN

@tugaysinanergn

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I build data-driven software and machine learning solutions using Python, .NET, SQL, and modern web technologies.

Turkey

Message

What I'm looking for

I'm seeking remote, hybrid, or on-site opportunities in Türkiye or internationally where I can contribute to meaningful, technically challenging AI, machine learning, data, and software projects while continuing to develop my expertise.

I'm a Software Developer at ModelERP, where I maintain and improve an enterprise ERP application using C# and .NET. I investigate production incidents, debug application issues, and use Microsoft SQL Server to resolve data-related problems.

Previously, I delivered freelance backend, full-stack, API, automation, and data-processing solutions with C#/.NET, Java, Python, React, Next.js, PostgreSQL, and Microsoft SQL Server. I worked across requirements analysis, implementation, testing, debugging, and delivery.

I'm growing my focus in artificial intelligence, machine learning, and data-driven software through projects in alloy composition prediction, stock market prediction, airfoil design, and AI-assisted chess error classification. My chess graduation project used Python and Stockfish to evaluate positions and classify move severity in real time.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

ModelERP

Sep 2022 - Present (4 years)

• Contribute to the maintenance and technical improvement of an enterprise ERP application built with C# and .NET technologies.
• Analyze, debug, and troubleshoot application issues, identifying root causes and implementing or coordinating appropriate technical solutions.
• Investigate application behavior, system errors, and production incidents to improve application reliability and operational

C#.NET Microsoft SQL Server Debugging Troubleshooting ERP Application Support

Freelance Software Developer

Self Employed

Jan 2018 - Jun 2022 (4 years 5 months)

Developed and delivered freelance software solutions across backend development, full-stack web applications, API development, automation, and data processing.
• Built backend applications and REST APIs using C#/.NET, ASP.NET Core, Java, Spring Boot, Python, and FastAPI.
• Developed full-stack web applications using JavaScript, TypeScript, React, and Next.js.
• Designed and integrated relational d

C#.NET ASP.NET Core Java Spring Boot Python fastAPI JavaScript TypeScript Next.js SQL PostgreSQL Microsoft SQL Server REST APIs Git Web Scraping Automation

Proje Uzmanı

Sinerji Bilişim Danışmanlık

Mar 2015 - Aug 2017 (2 years 5 months)

Worked on enterprise software projects involving application configuration, reporting, and Oracle database integration. Created application screens and wrote SQL and PL/SQL queries to support data retrieval and workflows.

Oracle Database SQL Pl SQL Reporting Configuration Requirements Analysis

Proje Uzmanı

Sinerji Bilişim Danışmanlık, İstanbul

Mar 2015 - Aug 2017 (2 years 5 months)

• Worked on enterprise software projects involving application configuration, reporting, and Oracle database integration.
• Created and added new application screens based on project and user requirements.
• Wrote SQL and PL/SQL queries to connect application screens with Oracle Database and support data retrieval, data entry, and application workflows.
• Developed and customized database-driven r

Bilgi Teknolojileri Uzmanı

Medipol Hastanesi

Aug 2013 - Aug 2015 (2 years)

Provided technical and application support for Hospital Information Management Systems (HBYS/HIS) and other hospital software used by clinical and administrative users.
• Used Microsoft SQL Server to write SQL queries, perform data checks, investigate application-related issues, and carry out necessary data corrections.
• Supported end users with software, system, and access-related issues across

Microsoft SQL Server SQL IT Support Network Configuration Cisco Windows Server User Management

Education

Degrees, certifications, and relevant coursework

Istanbul Medipol University Politics Club

Bachelor of Science, Computer Engineering

Graduation Project: AI-Assisted Chess Move Error Classification System.

Medipol University

Bachelor of Science, Computer Engineering

2017 - 2022

Full-scholarship Computer Engineering program taught in English. Graduation project: AI-Assisted Chess Move Error Classification System.

Medipol University

Lisans Derecesi, Bilgisayar Mühendisliği(İngilizce)

2017 - 2022

Full-scholarship Computer Engineering program taught in English.

Graduation Project: AI-Assisted Chess Move Error Classification System

Developed a Python-based system that analyzed chess games in real time, evaluated board positions using the Stockfish chess engine, and classified moves according to their severity, including Best Move, Good, Inaccuracy, Mistake, and Blunder.