Senior React Native Developer in Constanţa

44pixels  is a venture capital-funded startup at the forefront of the mobile AI applications industry. Our mission is to revolutionize how users interact with AI through cutting-edge mobile apps. Backed by some of the most prestigious names in venture capital, we are on a rapid growth trajectory and are looking to expand our team with innovative, driven, and passionate individuals. About the role We are looking for a  Senior Mobile Engineer with React Native  experience to join our team. This is a great opportunity to join us at an early stage and grow with the company as we develop more products and hire more. We believe in investing in people, and therefore are looking for someone with ambition and high agency, who will become part of the core engineering team. Responsibilities: Write reusable, testable, and efficient code Help design and implement functional requirements for the mobile application and platform Create beautiful, performant and polished interfaces Optimize applications’ performance, from API interactions to UI animations Requirements: 3+ years of proven React Native and Typescript experience 2+ apps live in App Store or Google Play Experience with production application development cycle At least basic knowledge of Typescript and rock-solid knowledge of JavaScript Experience with 3rd party frameworks and SDKs (AppsFlyer, Firebase, Purchasely, Braze etc.) Strong understanding of native build tools, like XCode, Gradle, and Android studio Solid knowledge of platform features (push notifications, in-app purchases etc.) Understanding of software engineering practices and principles Good communication, collaboration and team skills Nice to Have: A bachelor’s or equivalent degree in the relevant field Experience in backend, frontend or any other tech stack Experience in native mobile development (iOS or Android) Experience with LLMs, ImageGen or other AI tech Experience with setting up CI/CD pipelines for mobile apps Benefits of working with us Work in a highly professional team. Informal and friendly atmosphere in the team Ability to work from our comfortable downtown office in Warsaw Paid vacation - 20 business days per year, 100% sick leave payment 5 sick days per year Equipment provision Inflation-protected wages with regular revision of compensation conditions Legal and accounting support in Poland Partially compensated educational costs (for courses, certifications, professional events, etc.) Medical insurance (after the end of the probationary period) English and Polish courses - 2 times a week Bright and memorable corporate life: corporate parties 2 times a year, gifts to employees in honor of life events.