iOS · Unreal Engine 5 / VR · AI integration — I build and ship products end to end.

Eskişehir, Türkiye · English C1 · Japanese B2 · Open to relocation (Netherlands / Tokyo) and remote roles 📧 caganozcan59@outlook.com · LinkedIn

App Store · Swift · SwiftUI · RevenueCat · Fastlane · Python/PyMuPDF

Pediatric nurses use it mid-shift to check Y-site compatibility of IV drugs: 418 drugs, 87,000+ pairs, result in under two seconds.

• Solo developer: product, data, iOS app, subscriptions, App Store release, marketing.
• Built the data pipeline that extracts and structures compatibility data from clinical references (Stabilis, hospital handbooks), then had physicians review it.
• 14-day trial → monthly subscription (RevenueCat), active paying users.
• Wrote a B2B sales programme for private hospital chains in Turkey: tiered licensing, free pilot, Apple Search Ads.

Unreal Engine 5 · Blueprint · OpenXR · MetaHuman · Whisper · GPT-4o · ElevenLabs

A VR patient you can actually talk to. Built for a client (BD Medikal) as a clinical-communication trainer.

• Real-time voice loop: Whisper (STT) → GPT-4o (dialogue + emotion detection) → ElevenLabs (TTS), streamed so the MetaHuman answers without breaking immersion.
• SPIKES-protocol scoring: the simulation grades how the clinician delivers bad news, stage by stage.
• Full lifecycle: architecture, Blueprint logic, NPC animation, procedural behaviour, demo approved by the client's physicians.

Next.js · Vercel · iyzico · Paraşüt API · n8n

E-commerce payment integration and automated invoicing for two specialty coffee brands; a retainer-based small-business site with hosting, maintenance and blog.

Systems-level C++ / Metal work on the Sonic Unleashed static recompilation, used by the community:

• iOS build — experimental IPA: launches on iOS 27 with the UIScene lifecycle, fills the screen in landscape, survives lock/unlock and app switching, touch controls and on-device install, up to 120 FPS (ProMotion) on iPhone 16 Pro. Built on the port by @Markos-Th09.
• macOS build (Apple Silicon, native Metal), on top of the native Metal backend by @squidbus.

Root-cause fixes on the iOS port, each found on device from crash reports and traces:

• Crash on every second unlock. The suspend path drained the GPU after the frame's command list was already open, and the drain submits command list 0, so a frame suspended at index 0 resumed into a closed list and crashed in the driver. Moved the drain before the list is begun; verified over 21 lock/unlock cycles. (commit)
• Image squashed into half the screen. Measured the view hierarchy on device: SDL's Metal view stayed at its portrait launch size because UIKit never resizes a swapped-in root view. (commit)
• Suspend/resume freezes and watchdog kills, a boot deadlock, and missing game-specific shader logic in the cross-compiled shader recompiler. (findings)

Upstream:

• ProMotion support landed in Markos-Th09/UnleashedRecomp-iOS and Markos-Th09/plume#1.
• Crash report and patch for plume's Metal backend on iOS, landed via #116.

Claude Code + MCP tooling daily, specs before code, tests as the pass/fail gate for anything an agent generates. I own every line that ships.

Currently: Associate's in Web Design & Coding, Anadolu University (bachelor's transfer planned). Nominated team member, Alumni UK grant application 2026–27.