# Özer Subaşı

> Backend engineer in Istanbul, 8+ years in production. His current question: AI made us faster, and part of that speed is an illusion, so which part is real? He writes about it, builds tools along the way (System Design Canvas, hooksense-mcp, lambda-doctor, sideband, whyport) and runs products (HookSense, Lumecrawl, SelfInbox, UptimeCrow, Yayınlıyor, Cordy). AWS Community Builder (Serverless) since 2022.

## What's here

- [Home](https://ozersubasi.com/) ([Turkish](https://ozersubasi.com/tr)): Short intro, how he works with AI, tools, what's on his desk, and a dated log of recent work.
- [Work](https://ozersubasi.com/work): Products and systems shipped.
- [About](https://ozersubasi.com/about): Timeline since 2013.
- [Resume](https://ozersubasi.com/resume): Full CV.
- [Writing](https://ozersubasi.com/writing): Longer posts. Short notes go on X.
- [Contact](https://ozersubasi.com/contact): Email, X, GitHub, LinkedIn.

## How he works with AI

Vibe coding gets you an MVP. Past that, you need standards: agents write the code, but the structure is decided and written down.

- No: rambling at the agent, then "you handle it". Yes: starting with the technical picture: the data model, the boundaries, what done means.
- No: an agent that puts DTOs and mappings somewhere new each time. Yes: written rules for where controllers, services, DTOs and mappings live, and why there.
- No: an agent that starts from zero every session. Yes: memory lives in the repo: decisions, patterns, reference code.
- No: mistaking "it works" for "it's done". Yes: nothing closes before security, scale and maintenance get a look.

## Key facts

- Name: Özer Subaşı
- Location: Istanbul, Türkiye
- Email: ozer@ozersubasi.com
- GitHub: https://github.com/ozers
- X: https://x.com/ozersubasi
- LinkedIn: https://linkedin.com/in/ozer
- Experience: started in QA (2017), backend since 2019
- Skills: Node.js, TypeScript, Kotlin, Spring Boot, AWS (Lambda, DynamoDB, SQS, S3, API Gateway, CloudWatch), PostgreSQL, MySQL, MongoDB, Elasticsearch, Redis, RabbitMQ, Docker, GraphQL, REST, event-driven architecture, serverless, webhooks, MCP
- Currently: Senior Backend Engineer at Hesap.com (fintech; Kotlin, Spring Boot, microservices, PostgreSQL, Kafka, Redis)
- Previously at: Retter.io, Yıldız Tech, İstegelsin, Patika Global, Faselis, BiSU, HepsiEmlak (via Keytorc), Vodafone (via Wipro)