Yasir Hüdalfa
Özdaş
Hi, I’m Yasir. I build cross-platform apps with React Native and work on security at the same time. Most recently I built a browser-based CAD editor at Tekhnelogos for natural gas distribution companies.
Google Play
Getting my apps ready for Google Play — store requirements, signing and release flows.
Bug bounty and pentesting
Keeping my bug hunting sharp and going deeper into penetration testing on web and mobile targets.
Mobile and full stack
Looking for a full-time role in mobile development or full stack engineering.
Featured projects
All work
StarCAD
A browser-based CAD editor for gas installations: 2D drafting, 3D and isometric views, a project approval flow and an admin panel.
ALDOS
Smart warehouse automation: QR-based location verification, stepper motors tracked on three axes, web and mobile clients.
Not-LAN
A note sharing and messaging platform for students: web, Android and iOS from one codebase.
Su-Vakti
Daily water tracking: minute-based reminders, quiet hours, a home screen widget and a dark theme.
Kolon Kanseri Tespiti
Colon cancer detection from pathology images: a baseline CNN compared against transfer learning with ResNet50.
BegBegDm
A multi-tenant product that auto-replies to Instagram comments by DM: keyword rules, messages with buttons, and an admin panel.
Sekme
An endless ball-and-block mobile game: no levels or lives, difficulty grows from a progression curve, and the balls are cosmetic only.
Alphenix
A voice-first personal AI assistant for Windows that drives apps, files and the browser, and asks permission before anything risky.
local-foundry-rag
A RAG application that runs fully on device with no internet connection, backed by a SQLite vector store.
ev-fiyat-tahmini
House price prediction: feature engineering and a comparison of regression models.
musteri-ayrilma-talebi
Customer churn prediction: classification models and reporting of success metrics.
fetih_mimarlik
A corporate web interface for an architecture studio, with motion transitions and a project showcase.
ultimate-pdf-suite
A desktop tool that brings PDF merging, splitting and conversion together in one interface.
About and skills
About
I build cross-platform products with React Native while keeping up my work in security without slowing down. I enjoy finding many-sided solutions to problems that span software and hardware — from a mobile interface to a stepper motor driver, from a CAD editor to a RAG system running entirely on device.
My goal is to keep building products while going deeper into security, and to carry my career forward on what I have learned in both.
Skills
Where I studied
Hitit University
Throughout my degree I built mobile solutions with IoT and React Native, making it a principle to ship products that solve real problems through team work. My graduation project, ALDOS, was a warehouse automation system driven by position-tracked stepper motors on three axes.
Where I worked
- Worked end to end on a web-based CAD application for natural gas distribution companies, designing user-experience-focused interfaces and 3D-enabled drawing modules with Three.js.
- Set up an isolated, easy-to-manage and scalable container architecture for the app’s infrastructure and deployment using Docker and Portainer.
- Built secure coding principles into the whole development lifecycle to maximize the project’s structural security.
- Built a RAG application that runs entirely on device, with no internet connection required.
- Turned document contents into embedding vectors, indexed them in a SQLite-based vector store, and served answers efficiently through similarity search.
- Integrated new modules into client TypeScript web applications and made improvements to raise system performance.
- Completed server installations and hardware configuration, and designed a secure, scalable sample hospital network topology.
What I learned
All five can be verified through the issuing institution’s own system.
Let’s build something
If you have something on the mobile, full stack or security side, write to me. Email gets the fastest reply.
ysrozdas1@gmail.com