Software Engineer · Flutter / Mobile İstanbul, Türkiye

I build Flutter apps people trust with their money.

Software engineer shipping production fintech for OYAK Yatırım and QNB Finansbank — clean architecture, smooth state, real users. Two-time winner of TEKNOFEST’s Most Unique Software Award.

01 — Impact

Real apps. Real users. Real money.

Production Flutter in Turkish finance, where performance and reliability aren’t optional — plus an award-winning run in aerospace software.

500K+

downloads of Mono, QNB Finansbank’s mobile app

IBTech · 2023
200K+

active users performing financial transactions

Mono · QNB Finansbank
3,000+

daily active users on the OYAK Yatırım finance app

Innovance · 2023 — now
2×

“Most Unique Software” award at TEKNOFEST

Fighter UAV · 2022 & 2023

02 — Selected work

Shipped where it matters.

Three systems, three kinds of pressure: money at scale, a growing investment platform, and live flight data from a fighter UAV.

01 — FintechQNB Finansbank · IBTech · 2023

Mono

Built new services and features for Mono, a popular Flutter app where 200K+ active users make real financial transactions. BLoC on the client — and .NET backend services built on Onion architecture behind it.

500K+downloads
200K+active users
  • Flutter
  • BLoC
  • .NET
  • Onion Architecture
02 — InvestingOYAK Yatırım · Innovance · 2023 — now

OYAK Yatırım

Building a finance app used by 3,000+ people every day: app-in-app structures, custom in-house services in place of third-party libraries, and Firebase event logging that turns usage into product decisions.

3,000+daily active users
In-houseservices over 3rd-party libs
  • Flutter
  • MVVM
  • Provider
  • Firebase
  • Caching & lazy loading
03 — AerospaceKOUSTECH · TEKNOFEST · 2021 — 2023

Fighter UAV ground software

In a five-developer team, built the Flutter presentation layer of a distributed fighter-UAV system and an app that visualizes real-time telemetry — gathering requirements directly with the avionics and control teams.

2×Most Unique Software Award
LiveUAV telemetry visualization
  • Flutter
  • Riverpod
  • gRPC
  • Distributed systems

03 — Side projects

My own apps, live on the App Store.

Three iOS apps I took from idea to launch on my own — product, code, subscriptions and App Store release, end to end.

iOS · Navigation

Apex Drive Tracker

Every drive, scored for smoothness.

Records route, speed, elevation and driving style, then marks hard braking, high speed and sharp corners on the map. A 0–100 Flow Score rewards smooth driving — not fast driving.

  • Flow Score
  • Friends & leaderboards
  • Live Activity
  • No ads or trackers
View on the App Store

iOS · iPadOS · Graphics & Design

GenWall: AI Photo Maker

Wallpapers from a single sentence.

Describe an idea, pick one of 12 styles — from Minimal and Neon to Space and Retro — and get an AI-generated wallpaper you can set on your home or lock screen in one tap.

  • AI generation
  • 12 art styles
  • One-tap set
  • Cloud sync
View on the App Store

iOS · Books · 4 languages

Wovi: Magical Bedtime Stories

Your child, the hero of tonight’s story.

Pick a theme, an age and a few details, and Wovi writes an original, age-appropriate story — with an illustration on every page and soothing narration that keeps playing when the screen locks.

  • AI stories
  • Voice narration
  • Ages 3–8
  • TR · EN · DE · ES
View on the App Store

04 — Recognition

2×

Most Unique Software. Twice.

En Özgün Yazılım Ödülü

TEKNOFEST · Fighter UAV Competition (Savaşan İHA Yarışması)

20222023

Two separate years, the same verdict at Türkiye’s largest aerospace and technology festival. As part of the KOUSTECH team, I built the Flutter, Riverpod and gRPC presentation layer of our distributed UAV system — and the app that visualized its live telemetry.

05 — Flight log

Five teams. One trajectory.

From a student UAV team to fintech in production — every stop sharpened the same craft: mobile apps that are fast, testable and built to last.

Full profile on LinkedIn
Nov 2023 — PresentIstanbul

Software Engineer

Innovance · OYAK Yatırım

  • Finance app with 3,000+ daily active users — focused on performance, modularity and maintainability.
  • App-in-app structures and custom in-app services instead of third-party libraries.
  • Firebase event logging for detailed analytics and data-driven feature optimization.
  • MVVM with Singleton and Observer, Provider state, caching, lazy loading and multithreading — shipped through CI/CD.
Mar 2023 — Sep 2023Kocaeli

Software Engineer

IBTech · QNB Finansbank

  • Mono — 500K+ downloads and 200K+ active users performing financial transactions.
  • New services and features in a cross-functional team, with BLoC for state management.
  • Backend services in .NET following the Onion architecture.
Feb 2021 — Mar 2023Kocaeli

Software Developer (Volunteer)

KOUSTECH · Fighter UAV team

  • Presentation layer of a distributed system with Flutter, Riverpod and gRPC, in a team of five.
  • Designed and built an app that visualizes real-time UAV telemetry.
  • Planned and ran requirement meetings with the Avionics and Control departments.
Aug 2022 — Sep 2022Istanbul

Software Engineer Intern

Nokia

  • SQL across 2 databases and 150+ tables; analyzed Nokia Lab’s sensor data in Power BI.
  • Installed server operating systems and connected them to the internal network.
Jun 2022 — Jul 2022Kocaeli

Software Engineer Intern

Argenova

  • Flutter, Riverpod and Firebase app for UN Sustainable Development Goal 4, Quality Education — in a team of five interns.
  • Led the project presentation to Argenova staff.

06 — Toolkit

The stack behind the apps.

Flutter-first, architecture-minded, and comfortable on the other side of the API.

Mobile & frameworks

FlutterBLoCRiverpodProviderSpring Boot.NET

Languages

DartKotlinSwiftPythonJavaC#

Architecture & patterns

MVVMClean ArchitectureOnion ArchitectureSingletonObserver

Tools & practices

FirebaseCI/CDgRPCSQLGit & GitHubPower BIAgile teamwork

Education

Kocaeli University

B.Sc. in Computer Engineering · GPA 3.20 / 4.00

07 — Contact

Let’s build something people trust.

Flutter, mobile architecture, fintech — if it needs to be fast, solid and actually shipped, I’d love to hear about it.

camlibelbugrahan@gmail.com