Projects & Open Source

A catalog of native mobile applications, developer libraries, audio utilities, and web experiments.

Featured Projects

Selected software, iOS apps, and open-source tooling.

Mobile Banking E-Commerce & 3D Secure

High-scale modular iOS banking application serving millions of Polish banking clients, featuring secure e-commerce, biometric authentication, and 3D Secure payments.

Modular architecture with SwiftUI, XCTest, and Snapshot screenshot regression tests
TLS pinning, jailbreak detection, and biometric authorization meeting strict banking regulations

SwiftUISwiftSecurity / OWASP3D SecureModular Architecture

E-Grocery AI Assistant Module

AI-powered shopping assistant integrated into a leading Polish e-grocery app, accelerating user checkout and recipe item discovery.

Architected PoC in Flutter, delivered production cross-platform module in React Native
Released to live consumer market in August 2025

React NativeFlutterAzure DevOpsAI Integration

Atomic SwiftUI Component Library

Reusable UI system adhering to Atomic Design principles, enabling consistent, accessible interface design across multiple automotive and enterprise apps.

Cross-team reusable tokens, accessible typography, and theme styling
Significantly accelerated prototyping and feature development

SwiftUIAtomic DesignFigmaDesign Tokens

WalkieTalkie (Open Source)

Real-time low-latency iOS audio transmission app communicating via custom UDP socket streaming and background audio handling.

Low-latency UDP packet streaming and buffer manipulation in Swift
Automated background audio reconnection

SwiftCoreAudioUDP SocketsNetworking

Looking for more code?

Explore additional experiments, commits, and public gists directly on GitHub.

Visit @jekahy on GitHub →