# Ertem Biyik

I make apps for Apple platforms. Sometimes poke at what's underneath them. In my free time I build consumer + AI side projects with friends, skate, play tennis, and nerd out on X. Now founding engineer at Pool — the fastest way to save anything with a screenshot. Before that, three years at VK shipping a superapp to 100M+ people

## Experience

- [Founding engineer at Pool](https://ertembiyik.com/work/pool/index.md): The fastest way to save anything with a screenshot (Feb 2026 — now)
- [Founder at Bluerage Software](https://ertembiyik.com/work/bluerage/index.md): Personal software from prompts, pivoted to declarative agents (Mar 2025 — Feb 2026)
- [Senior iOS engineer at VK](https://ertembiyik.com/work/vk/index.md): Superapp for 100M+ people. Mini Apps platform, navigation, infra, performance, AI tooling (Aug 2022 — Nov 2025)
- [iOS lecturer at ITMO University](https://ertembiyik.com/work/itmo/index.md): Taught iOS development to the most-winning ICPC students (Sep 2023 — Jan 2024)
- [iOS engineer at Sparrowcode](https://ertembiyik.com/work/sparrowcode/index.md): Built a comprehensive Ethereum library in Swift (Feb 2022 — Jul 2022)
- [iOS engineer at Kultura Records Store](https://ertembiyik.com/work/kultura/index.md): Scan a record in the shop and listen to what is on it (Jun 2021 — Oct 2022)

## Side projects

- [Swift Agentation](https://ertembiyik.com/projects/agentation/index.md): Point at an iOS view and tell a coding agent what to change (2026)
- [iOS Resolution](https://ertembiyik.com/projects/ios-resolution/index.md): Every Apple display spec, one Raycast command away (2026)
- [Punto](https://ertembiyik.com/projects/punto/index.md): Fixes text typed in the wrong keyboard layout, Latin ↔ Cyrillic (2025)
- [Haptics](https://ertembiyik.com/projects/haptics/index.md): Real-time touch between friends. Featured by Spotted in Prod (2024)
- [Reality](https://ertembiyik.com/projects/reality/index.md): A persistent AR layer over the real world, anchored with geospatial tech (2023 — 2024)

## Writing and talks

- [I built a tool that lets you point at iOS views and tell AI what to change](https://x.com/ertembiyik/status/2019811409048244312) (2026)
- [A modern iOS project setup in 15 steps](https://x.com/ertembiyik/status/1974214274596642907) (2025)
- [Create a beautiful network layer with Swift](https://medium.com/@ertembiyik/create-a-beautiful-network-layer-with-swift-f10a06e2c4b5) (2022)
- [CoreImage](https://ertembiyik.com/speaking/core-image/index.md): From CPU-bound Accelerate filters to a single-pass CoreImage and Metal pipeline (VK × ITMO, 2023)

## Connect

- Email: hi@ertembiyik.com
- X: https://x.com/ertembiyik
- GitHub: https://github.com/ertembiyik
- Telegram: https://t.me/gronzeisl
- LinkedIn: https://linkedin.com/in/ertembiyik
- Book a call: https://cal.com/ertembiyik