Web App Developer

• Ensure performance across a wide range of devices and network conditions.
• Collaborate closely with designers, product managers, and data scientists to shape features for mobile-first user experiences.
• Create and maintain reusable, accessible components optimized for touch gestures and mobile use.
• Improve tooling, testing, and performance from caching strategies to load-time optimization.
• Contribute to a high-quality culture through automated testing and knowledge sharing.

Do you have experience in Web development?, * Strong experience in modern web development (JavaScript/TypeScript, React, NextJS or similar frameworks).

• A track record of building responsive, high-performance web apps across devices and browsers.

• Solid understanding of mobile-first design principles, caching, and runtime performance optimization. Familiarity with automated testing (unit, integration, end-to-end).

• Collaborative, curious, and passionate about raising the bar for mobile web.

• Experience with Progressive Web Apps (PWAs) or hybrid development.

• Knowledge of accessibility standards and inclusive design.

• You'll have an opportunity to join our international team, backed by the top VC's and competing with the best education applications in the world
• You'll have a meaningful and profound impact on the lives of millions of musicians and future musicians all around the world.
• You'll get to work with a passionate and friendly growing band of PMs, designers, developers and data scientists.
• You'll get a competitive compensation package - salary, perks- and work in an awesome office in the heart of Berlin.

Yousician impacts and enriches the lives of millions of people by empowering them to play music they love, learn something new, and nourish their well-being. We merge music and tech to amplify the everyday. We reimagine the way people learn to play so that everyone can play. And, you don't need to be a musician to join Yousician! We're a band of passionate professionals who love what they do, are great at it, and move to the beat of the same drum. We're for all players: from newbies to seasoned pros. If you are looking for a rewarding career opportunity that helps shape the future of music-tech, you're in the right place!, Yousician is the world's largest music-tech company, with millions of users worldwide. Based in Helsinki, Finland, Yousician is home to the category-defining Yousician and GuitarTuna apps. Yousician, the #1 platform to learn and play music, makes learning fun, easy, and more accessible for everyone. Our award-winning technology listens to you play and gives instant feedback. With interactive, gamified lessons and songs, plus courses created with world-famous artists like Metallica and Billie Eilish, Yousician empowers people to play the music they love. Today, Yousician employs 100+ professionals from nearly 30 nationalities.