Software Engineer

Batuhan Berk
Ertekin

currently crafting mobile apps

I turn ideas into polished mobile and web applications — from native iOS & Android to cross-platform and the modern web. Founder of FlowByte Studio, where those ideas ship as real products.

View my work LinkedIn GitHub

4+
apps on Google Play: 10+
apps on the App Store: 60+
public repositories: 1,000+
contributions last year

Swift ·
SwiftUI ·
UIKit ·
Kotlin ·
Jetpack Compose ·
Flutter ·
Dart ·
TypeScript ·
React ·
Angular ·
JavaScript ·
Java ·
Spring Boot ·
.NET ·
Firebase ·
Supabase ·
SQL ·
REST API ·
RabbitMQ ·
WebRTC ·
Docker ·
Git ·
Figma ·

Swift ·
SwiftUI ·
UIKit ·
Kotlin ·
Jetpack Compose ·
Flutter ·
Dart ·
TypeScript ·
React ·
Angular ·
JavaScript ·
Java ·
Spring Boot ·
.NET ·
Firebase ·
Supabase ·
SQL ·
REST API ·
RabbitMQ ·
WebRTC ·
Docker ·
Git ·
Figma ·

Who I am

About Me

I'm Batuhan Berk Ertekin, a software engineer based in Ankara, Turkey, focused on mobile and web application development. I care about clean architecture, performance and the small details that make software feel effortless.

Alongside my professional experience and open-source work, I design, build and publish my own products through FlowByte Studio — from AI-powered creativity tools to personal finance apps.

always learning, always building ✏️

Mobile

Swift & SwiftUI
UIKit
Kotlin & Jetpack Compose
Flutter & Dart

Frontend

TypeScript & JavaScript
React
Angular
HTML & CSS

Backend & Data

Java & Spring Boot
.NET / C#
Firebase · Supabase
SQL · REST · RabbitMQ

Tools & Practices

Xcode & Android Studio
Git · CI/CD
Unit & UI Testing
Docker · Figma

Career

Work Experience

TG
Android Developer Trainee
Turkcell Geleceği Yazanlar · Remote, Türkiye
Mar 2026 — Jul 2026
Selected as one of 35 participants among 5,000 applicants for Turkcell’s "Gençlere Yatırım, Geleceğe Yazılım 5.0" program. Building Android UI screens and reusable components with Kotlin and Jetpack Compose — state management, app lifecycle and modern Android best practices.
- Kotlin
- Jetpack Compose
- MVVM
- REST API
- Mobile Development
VBT
Software Developer Intern
VBT Yazılım A.Ş. · Ankara, Türkiye
Jun 2025 — Jul 2025
Worked with cross-functional teams on enterprise software: Flutter and Swift mobile clients backed by Java (Spring Boot) and C# (.NET Core) services, event-driven messaging with RabbitMQ, SQL query optimization, and Agile/Scrum delivery with enterprise monitoring tools (BMC Helix, Grafana).
- Flutter
- Swift & SwiftUI
- Java (Spring Boot)
- .NET
- Angular
- JavaScript
- RabbitMQ
- HTML & CSS
- Agile
GİB
iOS Developer Intern
GİB Teknoloji · Ankara, Türkiye
Feb 2025 — May 2025
Developed and optimized UI tests for the GİB mobile app — used by 10M+ people — using Maestro: automated test scenarios across platforms and devices, detailed test reports, and UI tests integrated into CI/CD pipelines for reliable releases.
- Swift
- UIKit
- Maestro
- UI Testing
- CI/CD
- MVVM
- Git
LT
Software Developer Intern
Leonardo Türkiye · Ankara, Türkiye
Jul 2023 — Aug 2023
Developed a high-performance real-time audio/video calling app with Flutter and WebRTC, and built a real-time temperature & humidity telemetry system for UAVs using Arduino and C — sensor integration, calibration and data analysis for aerospace operations.
- Flutter
- WebRTC
- Swift
- C
- Arduino
- Embedded Systems
- Git
LT
Summer Intern
Leonardo Türkiye · Ankara, Türkiye
Sep 2016 — Nov 2016
First hands-on exposure to professional software engineering in aerospace.