Software Engineer — Python tooling, iOS/macOS apps, and open source. Working at Trendyol Go by Uber Eats since 2019.
Applications I've built for iOS and macOS.
Prayer times, Quran reading, Qibla finder, Dhikr counter and more — all in one app. Privacy-first: your location stays on-device, no account required, works fully offline. Free and ad-free.
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Smart browser history and bookmark search for macOS. Search all your browsers in one interface.
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Open source tools that improve the Python developer experience.
A linter/formatter that finds and removes unused import statements. Works as a pre-commit hook.
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A linter that keeps the __all__ list in Python modules always up to date.
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A Pythonic ORM-like wrapper around Python's built-in dbm module.
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A decorator that defines a method only when a condition is true. Simple but elegant.
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Articles on Python, Django, Git, OpenCV, Cloud and more.
A single agent hits three walls: context limits, attention drift, and sequential bottlenecks. Multi-agent systems solve all three — the orchestrator decomposes, subagents run in parallel, each with its own clean context.
Every AI integration used to be custom-built. MCP changes that: write a tool once as an MCP server, and every MCP-compatible AI application can use it.
A language model takes a question and returns an answer. An AI agent takes a goal, makes a plan, uses tools, and produces a result. That difference turns AI from a chatbot into a collaborator.
Fine-tuning isn't always the answer — most of the time it isn't. But when it is, nothing else comes close. Here's when to use it, when RAG is the better call, and why LoRA changed everything.
The same model, the same question, worded differently — completely different results. That's not luck. How you frame your prompt directly determines the output you get.
Before I learned about RAG, I was dumping raw context into AI prompts and getting flooded with false positives. RAG changed everything. And it turns out Cursor and Claude Code use it too — that indexing progress bar isn't just for show.
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Hakan Çelik