Marvin Tseng

Hi, I'm Marvin 👋🏻

I'm a lead iOS developer at PostFinance and a part-time MSc Informatics student at the University of Zurich.

At PostFinance I work on the main banking app used by millions of people in Switzerland — mostly investment features like crypto and the coordination between devs, product, and design that keeps the team moving. Before that I spent two years at Digitec Galaxus, helping take the iOS app from a 2.0 App Store rating to 4.8.

Outside of work and uni I'm into endurance sports, running and cycling.

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Work Experience
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  • Sep2024 - Current
    PostFinance
    Lead iOS Developer

    Develop investment features for the main banking app used by millions of people in Switzerland, plus the coordination between devs, product, and design that keeps the team moving. Lead iOS Developer since March 2025.

  • Sep2022 - Aug2024
    Digitec Galaxus
    iOS Software Engineer

    Two years re-architecting the Digitec and Galaxus iOS apps while shipping — overhauled navigation and checkout, rebuilt authentication, and helped take the App Store rating from 2.0 to 4.8 stars.

Recent projects
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Let's Connect

If you want to get in touch with me about something or just to say hi, reach out on social media.