Junior / Intern Application Developer

Company Description VALEN is an early-stage Warsaw start-up building a consumer mobility app, with a customer app, a partner app and an operations dashboard. The product is fully designed and we’re preparing our first launch in Warsaw. We’re a small founding team that moves fast, ships real features every week and gives early team members real ownership.Role Description Full-time Junior / Intern Application Developer, Warsaw (hybrid).You’ll be one of the first engineers, turning finished designs into a working mobile app. You will:

• Build iOS and Android screens from ready designs (React Native or similar)
• Connect the app to a database, maps, payments and photo upload
• Work directly with the founder to plan features and ship quickly
• Test, fix bugs and keep the code clean and documentedQualifications
• Computer Science student, recent graduate or self-taught developer with at least one app or web project you can show (GitHub or link)
• JavaScript or TypeScript; React or React Native is a big plus
• Basic experience with APIs, databases and Git
• Turns designs into clean, polished interfaces
• Clear communicator in Polish or English; self-driven and reliable
• Nice to have: a published app, Stripe or maps experienceCompensationPaid, umowa zlecenie or B2B. Growth path to a long-term role with equity for strong performer.