Piotr is available for hire
Hire PiotrPiotr Gorzelany
Verified Expert in Engineering
Software Developer
Wrocław, Poland
Toptal member since May 17, 2022
Bio
Piotr is a senior iOS engineer with over eight years of experience making mobile apps. Over the years, he has worked on projects big and small with clients ranging from startups to multinational corporations. In Piotr’s work, he focuses and takes pride in delivering high-quality apps that people like to use.
Portfolio
Indeed Flex
Swift, iOS SDK, Architecture, Frameworks, Git, Terminal, SourceTree, Postman...
Santander (Contract)
Swift, iOS, Git, CocoaPods, Terminal, SourceTree, Postman, Xcode, iOS SDK...
S3 Connected Health (Contract)
Swift, iOS, Flutter, Git, CocoaPods, RxSwift, Terminal, SourceTree, Postman...
Experience
- Git - 7 years
- MacOS - 7 years
- Xcode - 7 years
- iOS - 7 years
- Swift - 7 years
- CocoaPods - 7 years
- RxSwift - 4 years
- Objective-C - 1 year
Availability
Full-time
Preferred Environment
Xcode, Swift, iOS
The most amazing...
...project I’ve worked on was a personal banking app for one of Europe's largest banks, used by millions of people.
Work Experience
Senior iOS Software Engineer
2022 - PRESENT
Indeed Flex
- Developed the support module for the Indeed Flex app.
- Took part in initiatives to increase developer productivity.
- Worked on various parts of the Indeed Flex mobile experience.
Technologies: Swift, iOS SDK, Architecture, Frameworks, Git, Terminal, SourceTree, Postman, Visual Studio Code (VS Code), Xcode, Artificial Intelligence (AI), SwiftUI, Core Data, Mobile Development, Figma, Mobile Design, Mobile UI, Mobile App Development, UIKit, REST APIs, iOS Native Libraries, Mobile, Mobile App Testing
Senior iOS Developer
2021 - 2022
Santander (Contract)
- Helped develop several features for a personal banking app.
- Worked as part of a very large team spread across several countries.
- Focused on the quality and security of the features.
Technologies: Swift, iOS, Git, CocoaPods, Terminal, SourceTree, Postman, Xcode, iOS SDK, Mobile Development, Figma, Mobile UI, Mobile App Development, UIKit, REST APIs, iOS Native Libraries, Mobile, Mobile App Testing
Senior iOS Developer
2020 - 2021
S3 Connected Health (Contract)
- Developed a native iOS app that helped family members and doctors remotely monitor the patient's vital signs.
- Maintained and improved other healthcare-related apps.
- Focused on delivering high-quality and tested apps that met healthcare regulatory requirements.
Technologies: Swift, iOS, Flutter, Git, CocoaPods, RxSwift, Terminal, SourceTree, Postman, Visual Studio Code (VS Code), Xcode, SwiftUI, iOS SDK, Architecture, Core Data, Mobile Development, Figma, Mobile UI, Mobile App Development, UIKit, Firebase, REST APIs, Bluetooth Low Energy (LE), iOS Native Libraries, Mobile, Mobile App Testing
Senior iOS Developer | iOS Team Leader
2017 - 2020
Objectivity (Contract)
- Worked on multiple apps for a variety of corporate clients from industries like property management, consumer goods, finance, etc.
- Managed a small team of 5 iOS developers and was responsible for the quality of delivery and improving the iOS team.
- Focused on delivering high-quality apps used by thousands of people every day.
Technologies: Swift, iOS, Flutter, Objective-C, Git, CocoaPods, RxSwift, Terminal, SourceTree, Postman, Xcode, iOS SDK, Architecture, Core Data, Mobile Development, Figma, Mobile UI, Mobile App Development, UIKit, Firebase, REST APIs, Bluetooth Low Energy (LE), iOS Native Libraries, Mobile, Mobile App Testing, MapKit, WebSockets
Senior iOS Developer
2016 - 2017
Software Brothers (Contract)
- Worked for early-stage startups on multiple apps, including social media platforms, augmented reality, fitness, and others.
- Created apps from scratch sometimes as a sole developer.
- Communicated with the client directly to get to know the needs and business case for each app.
Technologies: Swift, iOS, Git, CocoaPods, RxSwift, Terminal, SourceTree, Postman, SQL, Xcode, iOS SDK, Architecture, Core Data, Mobile Development, Figma, Mobile UI, Mobile App Development, UIKit, Firebase, REST APIs, iOS Native Libraries, Mobile, Mobile App Testing, WebSockets
Experience
Enclave AI
https://enclaveai.appThe Enclave AI application is designed to offer a seamless, private AI experience by leveraging advanced on-device processing capabilities. It is available for both iOS and MacOS and shares most of the code. This application integrates state-of-the-art AI models, ensuring high performance and security, with all computations executed locally to eliminate any risk of data breaches. Users can generate content, solve problems, and innovate without internet dependency, ensuring absolute discretion and data integrity. The AI Enclave app is the pinnacle of privacy-focused AI solutions, empowering users with unparalleled creative and problem-solving tools while safeguarding their personal data.
A Personal Banking App
Developed an iOS app written in Swift for one of the largest European banks. I was part of a very large multinational team working on a personal banking app used by millions of people. I focused on delivering high quality, testing, and working features.
Education
2006 - 2013
Master's Degree in Finance and Accounting
Wroclaw University of Economics - Wrocław, Poland
Certifications
FEBRUARY 2025 - PRESENT
AI Agents Fundamentals
Hugging Face
Skills
Libraries/APIs
REST APIs, iOS Native Libraries, CocoaPods, RxSwift, llama.cpp
Tools
Xcode, Git, SourceTree, Terminal, Figma, Postman
Languages
Swift, SQL, Objective-C
Frameworks
SwiftUI, iOS SDK, UIKit, Core Data, Flutter, MapKit
Paradigms
Mobile Development, Mobile Design
Platforms
iOS, Mobile, MacOS, Firebase, Visual Studio Code (VS Code), Desktop, Bluetooth Low Energy (LE)
Other
Mobile App Development, Architecture, Frameworks, Mobile UI, Mobile App Testing, Speech Recognition, Speech to Text, WebSockets, Finance, Open-source LLMs, Artificial Intelligence (AI), Llama 3, Mistral AI, Large Language Models (LLMs), Llama, AI Agents
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