OGUZ KAAN DERE
ENDE
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Portrait of Oguz Kaan Dere

About

Software engineering with a product and systems perspective.

I am a software developer with a Biomedical Engineering background and professional experience in enterprise frontend systems, Java/JavaScript full-stack work, and hospital software.

My current work spans Java microservices, native Android products, typed frontend architecture, local-first document workflows, and controlled AI systems. I prefer explicit constraints, reviewable data, and interfaces that keep the final decision visible.

Based in Düsseldorf, I am building deployable products that strengthen both my German-market engineering profile and my independent product portfolio.

Product thinking

How I turn an idea into a working system

  1. 01

    Model vague real-world problems as explicit data structures, rules, and review flows.

  2. 02

    Design failure paths, persistence, and recovery before polishing the happy path.

  3. 03

    Constrain AI with sources, schemas, and clear uncertainty behavior.

  4. 04

    Prefer local-first patterns when user data does not need a server.

  5. 05

    Ship products with tests, CI, documentation, and honest scope boundaries.

Background

Experience

2025–Present

Independent Product Builder

Independent

  • Building Java platforms, native Android products, local-first AI tools, document workflows, and interactive systems.
  • Turning focused product ideas into tested, deployable, and explainable releases.

Current product focus: preparing Tip Tracker for Google Play while maintaining LedgerFlow as the flagship engineering case study.

Java · Spring Boot · Kafka · Kotlin · Jetpack Compose · React · TypeScript · PostgreSQL · Docker · Playwright

Dec 2022–Dec 2024

Full Stack / Frontend Developer

Ekinoks Software

  • Developed enterprise Angular/TypeScript frontend features across complex UI modules, forms, state, and API integration.
  • Worked in a professional software team on maintainable implementation, debugging, and iterative product improvements.

Angular · TypeScript · RxJS · Kendo UI · JavaScript · REST · Git

May 2021–Nov 2022

Full Stack Developer

Fonet Software

  • Developed features for a hospital information management system in a database-backed enterprise environment.
  • Worked across Java/JavaScript services, bug fixing, and production-oriented maintenance.

Java · JavaScript · ExtJS · SQL/Oracle · Git

2019–2020

Game Developer / Incubation

ATOM / METU

  • Built Unity prototypes and gameplay systems through game jams and incubation work.
  • Explored visual design, interaction loops, and lightweight production workflows.

Unity · C# · Blender · Photoshop · Git

Working set

Skills

Backend

Java · Spring Boot · Kafka · REST · OpenAPI · PostgreSQL

Frontend

React · Next.js · Angular · TypeScript · Vite

Android

Kotlin · Jetpack Compose · Room · DataStore · Hilt

Delivery

Docker · GitHub Actions · Testcontainers · Playwright · Keycloak

AI & Documents

RAG · OCR · BYOK AI · PDF workflows · Structured extraction

Interactive

Godot · Unity · Phaser · WebGL · Game systems

Domain

Biomedical Engineering · Hospital software · MedTech interest