iOS Developer - Twint

For our client in Zurich, we are looking for an experienced iOS Developer to support the continued development of the TWINT Whitelabel App for various Swiss banks. With over 3 million active users and more than 50 million transactions per month, the TWINT Whitelabel Apps are among the most successful financial applications in the Swiss app stores.

You will join a cross-functional Scrum team with high autonomy, working in a dynamic and diverse environment that offers great creative freedom and responsibility.

Project Duration: 07.07. - 30.06.2026

Workload: 80%

Your Responsibilities:

• Further development of the existing iOS TWINT Whitelabel App, ensuring high software quality through code reviews and test automation
• Implementation of change requests and resolution of bugs
• Analysis of production issues and provision of third-level support
• Maintenance and continuous improvement of the CI/CD environment
• Acting as a technical contact for questions from Requirements Engineering

Your Profile:

• University degree (FH, Uni, ETH) in Computer Science or equivalent education
• At least 4 years of hands-on experience in iOS development using Swift and Objective-C
• Strong analytical and debugging skills, with an interest in CI/CD engineering
• Experience contributing to published apps in the App Store is a big plus
• Experience working in agile teams (Scrum)
• Structured, proactive way of working
• Fluent in Englisch (C1), German intermediate (B1)