Ahmet Turgut
Senior Backend Developer at Kolay İK · Türkiye
I'm a software engineer focused on backend systems: PHP and Laravel, PostgreSQL and MongoDB, AWS, queues and the unglamorous work of making production systems fast and reliable. Before that I led a software team building medical device software in C++/Qt, and I've spent the last few years bringing LLM and machine learning tools into real products.
I write here about backend engineering, infrastructure and applied AI — mostly things I had to figure out on the job and wished someone had written down.
Writing
All posts →- Code Inflation: I'm More Productive. Am I More Valuable?
- We Taught a Spreadsheet to Answer Queries
- Random Access in a Deflate-Compressed XLSX Is Supposed to Be Impossible
- The One-Character Bug That Made Our PHP Excel Library 30% Faster
- From PHP to Go: How We Made Excel Streaming 5x Faster and Cut Memory Usage by 95%
Experience
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Kolay İK
Türkiye- Senior Backend DeveloperJun 2025 — Present
- Optimized job and queue processing for high-volume background tasks, bringing execution times from hours down to seconds.
- Tuned and maintained PostgreSQL and MongoDB, cutting slow-query latency and improving stability under production load.
- Design and operate backend systems with PHP (Laravel), AWS and Docker for Turkey's largest HR SaaS platform.
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Biosys
Ankara, Türkiye- Software Development Team LeadSep 2023 — Jun 2025
- Software EngineerSep 2022 — Sep 2023
- Led a cross-functional engineering team building medical device software.
- Optimized and refactored the ventilator GUI (C++/Qt) and redesigned the software architecture.
- Built AI-assisted healthcare tools (DICOM viewer, doctor assistant) and integrated AWS, PostgreSQL and LLM-based services.
- Automated CI/CD pipelines and developed a sales tracking system with Laravel and Vue.js.
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granteedU
Texas, USA (remote)- Software Engineering LeadOct 2021 — Oct 2024
- Built a grant funding review platform with Laravel, Vue.js and Inertia.js.
- Designed the PostgreSQL data model and application architecture; ran AWS CI/CD (Elastic Beanstalk, EC2, S3, Route 53).
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Doğuş Teknoloji
Istanbul, Türkiye- Software EngineerAug 2021 — Sep 2022
- Software Engineer InternJul 2021 — Aug 2021
- Developed applications for the "Turkuaz" ERP of Doğuş Otomotiv using a layered .NET (C#) architecture.
- Wrote optimized stored procedures for MSSQL and PostgreSQL; managed pipelines in Azure DevOps.
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SaveAs Yazılım
Istanbul, Türkiye- Backend DeveloperSep 2020 — May 2021
- Software Engineer InternJul 2020 — Aug 2020
- Worked on the Webofis ERP and e-commerce backends (Ideal Market, Balikye) with PHP, Laravel and Vue.js.
Education
Marmara University
2017 — 2022B.Sc. Computer Engineering · Senior project awarded second best in the department (2022).