Jakub Towarek

I'm an iOS Engineer with 5 years of experience crafting elegant solutions for Apple platforms. I blend technical knowledge with user empathy to transform complex requirements into intuitive interfaces that millions of users interact with daily.

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📡 Technologies

• 💅 SwiftUI UIKit

• 🪢 Concurrency Combine RxSwift

• 🗺️ Git Git Flow Semantic Versioning Changelog

• 🧦 Swift Package Manager Cocoapods Carthage Mint

• 🌍 REST WebSockets gRPC GraphQL OpenAPI

• 🦺 GitHub Action w/ Self Hosted Runners Bitrise

• 🤔 Firebase Remote Config Crashlytics Google Analytics Amplitude

• 🧳 App Store Connect TestFlight Apple Business Manager Jamf

🥷 Experience

SumUp | iOS Engineer, Online Store Tribe

February 2023 ~ February 2025

• own entire key features development cycle, including merchant facing order managment
• fix and contribute to design system, including parts written in Obj-C
• take part in design reviews providing actionable feedback and suggesting "quick wins" regarding UI / UX designs for iPhone as well as iPads
• start app wide migration to SwiftUI
• monitor app stability via Crashlytics, feature performance via Google Analytics and overall system health via traces on HoneyComb
• effectively collaborate within Spotify's Agile model (tribes, squads, chapters) to deliver features with global impact like Customer Directory and allowing integrations from different tribes
• research and provide summarise of solutions to spikes, for example implementing Rich Text Editor by utalizing quill.js via WebView as less resource intensive solution to creating native solution
• improve OpenAPI definitions to correcty express behaviours and types making OS client generators less error prone

Dispo | iOS Engineer

January 2022 ~ February 2023

• independently implement new features in existing codebase
• redesign, optimise and expand capabilities of real time image processing system
• work closely with design team on release of image editing suite and introduction of new camera effects
• maintain stability by monitoring and prioritising crashes and non-fatal errors
• improve performance and readability of asset caching mechanism using async await pattern
• prepare features to be released as part of AB experiments in order to minimise potential negative outcome
• create and upload new app versions to the App Store Connect
• progressively refactor The Composable Architecture to MVVM with SwiftUI, Combine and async await
• experiment with disparity based depth measuring techniques for advance 3D photo effects

Netguru | iOS Research and Development Lead

August 2021 ~ January 2022

• coordinate AR virtual try-on app development
• filter iOS trends and news to select
• advise and provide feedback on blogpost or presentations
• align team members' needs with research topics

Netguru | iOS Developer

January 2020 ~ January 2022

Design System For Food Delivery Company

• design common interfaces for Android, iOS and Flutter
• write extensive documentation
• cover components with screenshot tests and UI Tests

Voice Assistant App For Easy CRM Access

• lead architecture design with SwiftUI and Combine
• implement on-device speech transcription
• interact with serverless backend via websockets
• advance communicated project value to stakeholders through analytics
• monitor and prioritise crashes and errors

IoT App For Startup

• add new features in obscure codebase
• fix critical security vulnerabilities in Firebase Authentication

Netguru | Junior iOS Developer

October 2019 ~ January 2020

💡 Open Source

SwiftOLED & SwiftGFX

Two Swift libraries developed while tinkering with Raspberry Pi and SwiftOnArm. I wanted to use Swift, but there wasn't a library that would let me display data on external OLED display, so I created two - one for drawing pixel buffer on the screen and second one, a graphics library, capable of rendering text to pixel buffer. Both have nice READMEs. I even got some contributions.

📢 Languages

I am fluent in English - I hold IELTS C1 certificate.

📚 Education

After finishing technical high school and passing IT Specialist certification I started Applied Computer Science major at Newcastle University in UK. Shortly after, I got accepted for junior iOS developer position, so I dropped out.