Flutter Developer (Junior or Mid Level)

About this role

ABOUT CODEWAY We build and publish mobile apps that reach 500M+ of users, fast. We’ve created category-leading apps, with a track record proven by hits like Cleanup (#1 iPhone storage cleaner worldwide), Retake AI (#1 AI face editing app in the US), and Learna AI (the top AI language learning app globally), alongside 50+ other apps across productivity, edtech, wellness, and entertainment—each shaping the future of consumer mobile. Since launching in 2020 with a small team in Istanbul, we’ve grown into a global team of 400+ people. With over 400 million downloads and a worldwide footprint, we’re already one of the fastest-growing consumer tech companies in Europe—and Barcelona is our next big chapter. Rooted in Istanbul and growing in Barcelona, we’re building the people, systems, and culture that will drive Codeway’s next phase of scale. Join us on one of the most exciting growth journeys in the Barcelona tech scene. ABOUT THE ROLE We’re looking for a Flutter Developer to join our mobile engineering team and help build high-quality B2C apps used by 500M+ of people worldwide. This role is ideal for someone who is either already working professionally with Flutter or at the beginning of their career with exceptional technical potential, strong academic foundations in mobile development, and the ambition to grow quickly in a high-scale consumer app environment. You’ll work closely with product, design, QA, and engineering teams to build, test, and improve mobile experiences that move rapidly from idea to millions of users. WHAT YOU’LL DO - Develop and maintain mobile applications using Flutter. - Build smooth, reliable, and scalable user experiences for high-traffic B2C apps. - Collaborate with product managers, designers, QA, and backend engineers to ship new features. - Contribute to mobile architecture, code quality, performance, and maintainability. - Use analytics, testing, and experimentation to understand user behavior and improve products. - Ensure app quality through debugging, testing, and performance optimization. - Work with tools such as Firebase and other mobile development technologies. - Use AI coding tools effectively to improve productivity while maintaining full ownership of code quality and logic. WHAT YOU'LL BRING - 1–4 years of professional experience in Flutter development or a Master’s degree in Mobile Application Development. - Strong understanding of mobile development principles across iOS and/or Android. - Experience building, maintaining, and improving mobile applications. - Solid understanding of mobile architecture, app performance, testing, debugging, and release quality. - Good business-level English. - A strong technical background, either through formal education or professional experience. - Experience or strong exposure to AI coding tools, with the ability to clearly explain how you use them in your workflow. - Curiosity, ownership, and the ability to learn quickly in a fast-paced product environment. NICE TO HAVE - Experience with Firebase. - Backend development knowledge. - Experience working on apps with large user bases. - Understanding of analytics, experimentation, and A/B testing. - Experience with app store releases, CI/CD, or mobile performance optimization. - Experience with pair programming. OUR TECH STACK - Flutter - Dart - Firebase - Google Cloud Platform (GCP) - Gitlab - Tools: Figma, Jira & more WHY JOIN CODEWAY? - Build mobile products used by millions of people globally. - Work on high-growth B2C apps across AI, productivity, education, wellness, entertainment, and more. - Join a company with 400M+ downloads and 50+ products. - Be part of Codeway’s Barcelona growth story from an early stage. - Learn fast, ship fast, and collaborate with ambitious product and engineering teams. - Grow your career in one of Europe’s fastest-scaling consumer mobile companies.