Wolfgang is available for hire

Wolfgang Muhsal

Verified Expert in Engineering

iOS Developer

Location

Berlin, Germany

Toptal Member Since

January 25, 2022

Wolfgang is a seasoned iOS developer with over a decade of experience in the field. With a keen eye for detail, he takes pride in crafting every pixel on the screen and building a solid technical foundation for each product he works on. Wolfgang understands that problem-solving requires flexibility and balance between pragmatism and creative vision. He approaches challenges with an open mind, always exploring multiple solutions and striving to deliver the best possible outcome.

Xcode iOS Git Objective-C UIKit Swift Jira JSON Core Data CocoaPods SQLite iBeacon Fastlane Model View ViewModel (MVVM)GitLab

Portfolio

Freelancer

Swift, UIKit, iOS, Bluetooth LE, Git, Jira

CodingGene GmbH

Objective-C, UIKit, iOS, Swift, Git, Jira

Experience

UIKit - 12 years iPhone SDK - 12 years Git - 12 years iOS - 12 years Xcode - 12 years JSON - 10 years REST - 10 years Swift - 6 years

Availability

Full-time

Preferred Environment

Xcode, iOS, Swift

The most amazing...

...project I've contributed to is the Smart Speaker project of Deutsche Telekom, where I began as an iOS developer and became the mobile team technical lead.

Work Experience

iOS Developer

2019 - PRESENT

Freelancer

Helped to bring a virtual makeup mirror to fashion shops, where customers could try out beauty products in real-time.
Collaborated with transitioning a legacy Objective-C codebase to Swift while maintaining a shippable and working state all the time.
Re-wrote completely a poorly designed app to feature modern programming patterns and technologies, so it'd be ready for release.

Technologies: Swift, UIKit, iOS, Bluetooth LE, Git, Jira

iOS Developer | Partner

2010 - 2018

CodingGene GmbH

Developed an app used to listen to audiobooks and read ebooks selected from a vast catalog of titles. That app is a white label app distributed to customers of public libraries, schools, and other institutions in Australia and the UK.
Managed some verticals of the voice assistant system and performed as the technical lead of the mobile team for a smart speaker project.
Onboarded new employees and guided them from junior to senior state.
Developed an app used by thousands of car dealerships in Germany to track employees' working hours, register inventory, and provide checklists for various processes in the dealership.

Technologies: Objective-C, UIKit, iOS, Swift, Git, Jira

Experience

New Dating App, Spark Networks SE

https://apps.apple.com/us/app/elitesingles/id6444870384

Worked on the development of a white-label app for company-owned dating apps.

I was responsible for the initial development and conceptualization of the app architecture and the subsequent onboarding of additional developers.

Smart Speaker Companion App, Deutsche Telekom

https://www.telekom.de/smarte-produkte/smart-speaker/telekom-smart-speaker

Right from the beginning, I took part in developing the companion app for the new smart speaker of Deutsche Telekom.

I, later on, became the technical lead of the mobile team and managed some vertical features of the voice assistant.

Media Sales Solution, Audi AG

An iPad app used by dealers in car dealerships that controls a virtual reality headset used by a customer to present car configurations in 3D.

It also provides access to sales support material like videos and flyers and searches for used cars given a car configuration.

I joined as a supporting iOS developer and later took over the role of the mobile lead.

In-store Beauty Mirror, Douglas

https://www.douglas.de/de/c/beauty-mirror/17

I joined early on to create an app for the larger iPads to be used by customers of a Douglas store and try out makeup and entire looks using augmented technology.

That feature was later on integrated into Douglas' eCommerce app.

IoT App, BRITA GmbH

BRITA had an app developed by a digital agency that didn't meet their expectations, especially regarding code and architectural quality.

I was brought on board to refactor the entire codebase, improve user experience, and add new features. This app is not yet released.

Skills

Languages

Swift, Objective-C

Frameworks

UIKit, Core Foundation, iPhone SDK, SwiftUI, Core Data

Tools

Xcode, Git, Jira, Adobe Illustrator, Fastlane, GitLab

Platforms

iOS, Bluetooth LE, Crowdin, Firebase

Libraries/APIs

CocoaPods, Sockets

Paradigms

Kanban, Scrum, REST, Model View ViewModel (MVVM)

Storage

JSON, SQLite

Other

Carthage, EPUB, iBeacon, White Labeling, Deep Linking, Universal Links

Education

2009 - 2012

Master's Degree in Computer Science

University of Applied Science Darmstadt - Darmstadt, Germany

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring