AEAhmet Oğuzhan Engin

SOFTWARE DEVELOPER, PRODUCT OWNER · ISTANBUL, TÜRKIYE

I ship products,
not just code.

I build and ship real products end to end — from a construction-site management app used on real job sites, to an AI-powered report generator, to a multiplayer mobile game. Not just code: ideas, live on the App Store.

Ahmet Oğuzhan Engin

I am a builder

IDENTITY

I don't just write code — I build products

I design, develop, ship, and market digital products from scratch. That started with a B.Sc. in Civil Engineering at Işık University (full scholarship, ranked first in my department) — I taught myself software afterward, and the builder instinct carried straight over.

BUILDER MINDSET

Software should live in the world

A product isn't finished when the code compiles — it's finished when people use it. Şantiye Defteri exists because I understood the real paperwork problem on construction sites and shipped the fix, not a prototype.

RESEARCH DIRECTION

Multi-agent systems, human in the loop

My thesis-based M.Sc. at Işık University focuses on multi-agent architectures with human-in-the-loop and orchestrator agents — systems where multiple intelligent agents cooperate while humans stay part of the decision loop. That's not academic in a vacuum: it's how I build agent-based AI features today.

ENTREPRENEURSHIP

Think like a founder

Developers should understand business and users, not just ship code. I co-founded Stadelon and built its entire commerce platform myself, and I run Enginity, my own digital agency — full ownership, not just the engineering.

What I've built at Collabry

Collabry

Three consumer apps I built end to end — live on both iOS and Android, not portfolio mockups.

Şantiye Defteri icon

Şantiye Defteri

Site Report & Tracking

A construction-site management app that digitizes the daily paperwork of a job site: daily reports, personnel and equipment tracking, categorized expenses, visitor logs, and multi-site project management. Generates professional PDF/Excel reports and works offline — built on a real understanding of the problem from my civil engineering background.

React NativeExpoNode.jsPostgreSQL
Şantiye Defteri screenshot 1Şantiye Defteri screenshot 2Şantiye Defteri screenshot 3Şantiye Defteri screenshot 4
Built at Collabry.io
Tutanak Yönetim Sistemi (TYS) icon

Tutanak Yönetim Sistemi (TYS)

AI-Supported Report Management

Lets teams generate and manage professional reports with photos, location data, and AI-generated descriptions. Includes company administration, approval workflows, and PDF export. This is where my AI/LLM integration work shows up directly in a shipped product, not a demo.

React NativeNode.jsOpenAI APIPostgreSQL
Tutanak Yönetim Sistemi (TYS) screenshot 1Tutanak Yönetim Sistemi (TYS) screenshot 2Tutanak Yönetim Sistemi (TYS) screenshot 3Tutanak Yönetim Sistemi (TYS) screenshot 4
Built at Collabry.io
What Is Your Mood 2 icon

What Is Your Mood 2

Choose a Card, Vote, Win

A real-time multiplayer party game: players pick mood/meme cards in response to prompts, then vote on the best match across 7 rounds with a live scoring system. 100+ cards, built for actual concurrent multiplayer sessions — a different kind of engineering problem than a CRUD app.

React NativeNode.jsWebSockets
What Is Your Mood 2 screenshot 1What Is Your Mood 2 screenshot 2What Is Your Mood 2 screenshot 3What Is Your Mood 2 screenshot 4
Built at Collabry.io

Products & systems I've built

Real, substantial software solving real problems — for my own company and for real clients.

Stadelon logo

Stadelon

Full E-Commerce Platform

The complete commerce platform behind Stadelon, the clothing brand I co-founded — storefront and admin panel, built from scratch. Product catalog, cart and checkout, iyzico + Stripe payment integration, coupons, shipping management, and order/customer administration. Not a template — the whole stack, for my own company.

Next.jsSupabaseStripeiyzicoTypeScript
Co-Founder & builder

İşmakser Admin Panel

Warehouse & Operations System

A real operations system built for İşmakser Makina, a heavy-machinery service company with two branches. Tracks warehouse inventory and stock movements across branches, employee timesheets, repair work orders with customer/vehicle records, and public-site appointment/order form intake.

Next.jsTypeScriptSupabaseTailwind CSS
Built for a real client

Sağlık Asistanı

AI Personal Health Assistant

A mobile health assistant using Google Gemini for both text and vision: AI-generated weekly diet and workout plans with calendar sync, medication reminders, and food-photo calorie/macro estimation from a picture of your plate. Also tracks water intake and weight over time.

React NativeExpoGoogle GeminiSupabase
Solo project

Finans Ajan Sistemi

Multi-Agent Market Monitor

An independent multi-agent system monitoring BIST/US stocks and crypto, computing technical indicators, and raising anomaly alerts — with a local dashboard. Each asset class runs as its own isolated agent so one data source failing doesn't take down the others. I was also deliberate about scope: alerts stay descriptive ("RSI 74 — overbought"), not prescriptive, and the README documents exactly which data-licensing and regulatory steps would be required before this could be sold as a product. This is the applied side of my multi-agent systems research.

PythonFlaskSQLiteMulti-agent architecture
Solo research project
MA

Mevzuat Asistanı

Live Turkish Legal Research Agent

An agent that answers questions about Turkish law by live-searching mevzuat.gov.tr and reading the actual article text — never from memory. Every answer cites the specific article number. Ships as a web chat app, a CLI, and a real MCP server other tools (Claude Desktop, Claude Code) can plug into.

Next.jsPythonGoogle GeminiMCPSupabase
Solo project

Zihin Atlası

Your Personal Mind OS

A visual thinking tool combining mind maps, todo lists, and kanban boards into one personal "mind operating system." Real accounts, real sign-in — try it yourself, it's live.

React NativeExpoSupabase
Solo project — try it liveTry it live
Enginity logo

Enginity

My Own Digital Agency

A digital agency I run on the side — AI-powered automation, web design, and digital marketing for other businesses. Full-stack from design to deployment: I built and I run this.

Next.jsTailwind CSSFramer MotionCloudflare Pages
Founder & operatorTry it live
EARLY ACCESS
HT

Hukuk Takip

The all-in-one practice platform for Turkish lawyers

A practice platform that brings a lawyer's daily workflow into one place: delegating case files to other lawyers (tevkil), a private forum to consult peers, precedent case research, a shared agenda for notes and reminders, and daily Official Gazette updates filtered by practice area.

WHAT IT DOES

  • Tevkil — delegate case files to other lawyers
  • A private forum to consult peers on cases
  • Precedent decision research
  • A shared agenda for case notes and reminders
  • Automatic daily Official Gazette scan, filtered by practice area
Next.jsSupabasePythonClaude APIGitHub Actions

ALSO BUILT

Adım GYO
Procurement ERP (web + mobile)
mentorOS
AI personal board of directors
Future Me
Chat with your future self
Post Otomasyon
AI content + auto-posting

What I build with

CORE STACK

  • React
  • Next.js
  • React Native (Expo)
  • TypeScript
  • JavaScript
  • Node.js

AI / LLM

  • OpenAI API
  • Google Gemini API
  • Claude API
  • Agent-based workflow design
  • Prompt engineering

BACKEND & DATA

  • REST API design
  • PostgreSQL
  • SQL
  • Docker
  • Linux server administration

Experience

2023 — Present
Fullstack Software Developer
Collabry.io

Ship consumer and B2B mobile/web products end to end — the three App Store apps above are all built here.

2023 — 2025
Co-Founder
Stadelon (Clothing & Design)

Took a product from idea through to a running company — ownership beyond just writing code.

2023
Frontend Developer
LookUs Scientific

React frontend work for a scientific/medical technology company.

Education

2025 — Present
M.Sc. Computer Engineering (Thesis-based)
Işık University — 100% Scholarship

Research focus: multi-agent systems.

2017 — 2021
B.Sc. Civil Engineering
Işık University — 100% Scholarship, GPA 3.56/4.00, ranked 1st in department

Building something? Let's talk.

Open to product engineering roles, technical co-founder conversations, and interesting AI/full-stack problems.