Aviation
Onur Kantar
Senior Software Engineer & OKR Coach
Izmir
Summary
Dynamic Full-Stack Senior Engineer with over 6 years of experience in C#/.NET, Java, and Python, specializing in Llama 3 fine-tuning, AI developer tooling, and the development of mobile and POS platforms used by millions worldwide. Certified OKR Coach with a proven track record of delivering high-quality results under tight deadlines while maintaining a detail-oriented and organized approach. Recognized for strong collaboration skills and a commitment to driving team success, with a willingness to relocate to the Netherlands for new opportunities.
Overview
8
8
years of professional experience
5
5
Certifications
Work History
Senior Software Engineer
LOGO Yazılım
11.2022 - Current
- Architected and delivered scalable backend and mobile applications using C#/.NET Core and Java, serving enterprise clients across multiple countries.
- Fine-tuned Llama 3 LLM using Python and integrated it into internal business workflows — reducing manual overhead and enabling AI-assisted operations.
- Developed Python-based OCR solutions for automated document processing in enterprise environments.
- Designed and shipped an AI-assisted internal platform (GitHub Copilot-powered) enabling analysts to write higher-quality Jira tickets — contributing to OKR targets and reducing field defect rate by 12%.
- Contributed to mobile and self-checkout POS applications used by millions globally, including solutions for Decathlon and MediaMarkt.
- Designed microservice architectures; implemented DI, Unit/Integration Testing, and robust logging/alerting.
- Enhanced SQL Server performance; led code reviews and mentored junior engineers.
- Enhanced software functionality by identifying and resolving complex technical issues.
- Mentored junior developers, fostering professional growth and enhancing team productivity.
- Developed scalable applications using agile methodologies for timely project delivery.
- Regularly reviewed peers'' code contributions, offering constructive feedback to enhance overall product quality.
Software Engineer
LOGO Yazılım
07.2020 - 10.2022
- Built REST APIs via .NET Framework for large-scale enterprise integrations.
- Developed native Java modules and NPM packages for React Native apps — enabling deep platform integrations for self-checkout and sales apps deployed across multiple countries.
- Configured CI/CD pipelines in Jenkins; implemented unit testing and performance analysis.
- Developed scalable and maintainable code, ensuring long-term stability of the software.
- Integrated new technologies into existing systems, increasing capabilities and improving overall performance.
Junior Software Engineer
LOGO Yazılım
09.2019 - 06.2020
- Built UI components using AngularJS; contributed to C# backend for enterprise integrations.
- Delivered high-quality code on time, contributing to overall project success.
- Contributed to innovative solutions with thoughtful problem-solving techniques.
Software Intern
LOGO Yazılım
07.2019 - 09.2019
- Built a native corporate mobile app using Angular; set up a Node.js server for data mocking.
- Developed user-friendly software applications by implementing efficient coding practices and adhering to project deadlines.
- Assisted in creating comprehensive documentation, including user guides and technical specifications, ensuring seamless knowledge transfer for future maintenance or enhancements.
- Provided critical support to senior developers, assisting in the troubleshooting and resolution of complex technical issues.
System & Network Support Intern
Bimar IT Services (Arkas Holding)
06.2018 - 07.2018
- Assisted in streamlining support processes for increased efficiency and productivity.
- Strengthened internal communication channels among different departments involved in issue resolution through active engagement in discussions about ongoing challenges faced by customers.
Education
Bachelor's Degree - Computer Engineering
Dokuz Eylül University
Izmir07-2020
Skills
Backend & Core: C#, NET Framework, NET Core, Java, Python, Nodejs
AI & LLM: Llama 3 Fine-tuning, LLM Integration, OCR (Python), GitHub Copilot
Microservices & Infra: REST APIs, Microservices, Docker, Kubernetes, Jenkins CI/CD
Accomplishments
- Certified OKR Coach — goal-setting, team alignment, and continuous delivery.
- Built Autonomous AI pipelines and scripts (BMAD-METHOD enthusiast).
- Paraglider Pilot & Former Young Wings Leader, Turkish Aeronautical Association.
Certification
Microservices: Design Patterns — LinkedIn
Interests
Paragliding
Timeline
Senior Software Engineer
LOGO Yazılım
11.2022 - Current
Software Engineer
LOGO Yazılım
07.2020 - 10.2022
Junior Software Engineer
LOGO Yazılım
09.2019 - 06.2020
Software Intern
LOGO Yazılım
07.2019 - 09.2019
System & Network Support Intern
Bimar IT Services (Arkas Holding)
06.2018 - 07.2018
Bachelor's Degree - Computer Engineering
Dokuz Eylül University