// available for contract work

Piotr
Pietrzak.

I'm Piotr Pietrzak, an iOS & Frontend Developer building smart access systems, IoT integrations, and AI-augmented workflows in the Netherlands.

Let's connect See my work
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// tech_stack

What I work with

From native iOS through modern frontend to IoT hardware prototyping. These are the tools I use to ship.

Primary - daily use
Swift SwiftUI React 19 TypeScript MUI Bluetooth / BLE Vite Jotai SWR SPM Fastlane Git AI agents (Claude, ChatGPT)
Proficient - production experience
UIKit Combine React Hook Form Azure MSAL Vitest MSW Raspberry Pi Clean Architecture MVVM TDD CI/CD RxSwift Google Maps SDK
Familiar - used in past projects
GraphQL Firebase Kotlin Multiplatform Objective-C Figma Scrum Jenkins Bitrise
// recent_work

Selected projects

A few things I've built recently. From consumer apps to SDK design to full banking platforms.

Solo iOS · Skopei

Topology

Smart access app for vehicles, offices, bikes, and boats. Full SwiftUI rebuild, BLE lock integration, Google Maps.
SwiftSwiftUIBLEMaps
SDK Architect · Skopei

SkopeiConnectSDK

Swift Package for third-party Bluetooth smart lock integration. API design, BLE layer, developer docs.
SwiftSPMBLEAPI design
Frontend Co-owner · Skopei

Connect Portal

Admin platform managing smart access infrastructure across the Netherlands. React 19, TypeScript, MUI v7.
ReactTypeScriptMUIVite
IoT Prototyping · Skopei

BLE Beacon PoC

Raspberry Pi-based Bluetooth smart access prototyping. Signal analysis, proximity triggers, hardware validation.
Raspberry PiBLEPythonIoT
Senior iOS · Bank Pekao

PeoPay 4.0

Main mobile banking app built from scratch in 6 months. Millions of users. MVVM-C, RxSwift, automated CI.
SwiftRxSwiftMVVM-CTDD
iOS Lead · Raiffeisen

Mobilny Portfel

Full banking app delivered in under 6 months. Clean VIP architecture, programmatic UI, Jenkins CI.
SwiftVIPJenkinsiOS lead
// get_in_touch

Let's talk.

Available for contract work through a Dutch umbrella company. Remote-first, based in the Netherlands.

Connect on LinkedIn

CV and direct contact details for Piotr Pietrzak are available on request.