For our client in the banking sector we are looking for a Senior Mobile Developer / Mobile Tech Lead – iOS & Android.

The consultant will be responsible for driving the UI uplift and modernization of the mobile banking applications while working hands-on with both iOS and Android development. Key responsibilities include: - Lead UI improvement initiatives, ensuring a modern, consistent, and user-friendly experience across mobile platforms. - Design, develop, and maintain features for iOS and Android applications. - Collaborate with designers, architects, developers, and business stakeholders to deliver high-quality solutions. - Contribute to mobile architecture, technical design, and development best practices. - Ensure high quality through code reviews, unit testing, UI automation, and continuous improvement activities. - Take ownership of delivered solutions, including implementation, testing, deployment, and production support. - Support the team in end-to-end deliveries, including frontend and backend contributions when needed. - The consultant is expected to combine technical leadership with hands-on development and play a key role in improving the user experience of digital banking services. Must-have knowledge and experience - 7+ years of professional experience in mobile application development with a proven track record of delivering large-scale mobile solutions. - Strong expertise in either iOS (Swift) and/or Android (Kotlin), combined with strong hands-on experience in the other platform. - Experience leading or driving UI modernization, redesign, or uplift initiatives in mobile applications. - Strong knowledge of mobile architecture patterns such as MVVM, VIPER, or similar. - Experience with UIKit, Auto Layout, Jetpack Compose, XML layouts, and Fragments. - Strong understanding of unit testing, UI test automation, and quality engineering practices on mobile platforms. - Experience integrating and consuming REST APIs, asynchronous programming, and background processing. - Experience working with secure, high-quality, customer-facing applications where performance, stability, and security are critical. - Ability to drive technical discussions, collaborate with designers and stakeholders, and take ownership of end-to-end deliveries. - Strong communication skills and experience working in agile cross-functional teams. Nice-to-have knowledge and experience - Banking, payments, or financial services experience. - Experience with design systems, accessibility, and mobile UX best practices. - Knowledge of web technologies such as Angular, TypeScript, and JavaScript.

Location: Helsinki, Finland (hybrid)

Allocation: 100%

Start date: 15.10.2026

End date: 15.4.2027

Language: Fluent in English

Please apply with your updated CV, that clearly demonstrates your skills and experience relevant to this role. We offer continuously, which means that we sometimes remove the assignments before deadline. If you are interested we recommend that you apply immediately.

Contractor’s Obligations and Liability: Please note, should your candidate be selected for the assignment, Ework will request documentation in accordance with the Act on the Contractor’s Obligations and Liability (Tilaajavastuulaki), as well as proof of valid liability insurance.

PayExpress:

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