Job Summary: We are looking for a Mobile Developer to contribute to building the TOP HR mobile app and collaborate in an agile and proactive environment. Key Highlights: 1. Contribute to building the TOP HR mobile app 2. Work with the latest technologies: React Native and Expo 3. Collaborate with a young and proactive team Hi! We’re looking for our next star hire for our team as a Mobile Developer in Valencia (although being based here is not an exclusive requirement—we also support remote work within Spain). We are Sesame HR, the digital solution that helps HR teams, managers, and companies optimize personnel management processes by centralizing them on a single platform. We work to redefine the workplace experience and simplify daily operations for managers and HR professionals—so they can focus their time on what truly matters: caring for their teams while the company continues achieving outstanding results. What do we expect from you? Technically, it’s essential that you have: * At least 4 years of experience developing mobile applications. * Advanced proficiency in React Native with Expo and Expo Router. * Solid experience with TypeScript. * Knowledge of scalable architectures. * Experience implementing testing strategies: unit, integration, and E2E tests. * Experience integrating CI/CD with Expo (EAS Build, EAS Submit). * Experience publishing apps on the App Store and Google Play. * Proficiency using Git for version control. * Ability to adapt to change. As a startup, expect some twists! **And you’ll shine ✨ even more if you:** * Use AI coding assistants such as Claude Code or Cursor. * Have developed applications with Ionic/Capacitor or Flutter. * Have knowledge of other frontend frameworks like Angular or Vue 3. * Have experience with native iOS (Swift) or Android (Kotlin) code. * Have worked with agile methodologies. * Have experience in digital product development (SaaS or similar). * Have contributed to open-source projects in the mobile ecosystem. ‍ ‍ What will you do at Sesame? * Contribute to building the TOP HR mobile app. * Work with the latest technologies: React Native, Expo, and an always-updated tech stack. * Collaborate closely with a young and proactive team. * Design and implement clean and scalable architectures. * Be part of a well-structured agile environment enabling efficient workflow across every project. What will your growth path look like within the company? * During your first weeks, you’ll receive various trainings—both on the project and on the product—and engage in pair programming to get started on the project. * In the first months, you’ll focus on learning and developing features for the mobile app—previously refined by a tech lead—while continuing to explore all corners of the project. * Once you feel more comfortable, you’ll begin refining and estimating your own tasks under supervision and contributing your ideas during team meetings. * Once fully onboarded, you’ll actively participate in pre-sprint meetings and create, refine, and estimate tasks for your squad. **Every new feature is an adventure:** * You’ll work with React Native, Expo, Expo Router, and TypeScript. * You’ll use and build components following a Design System developed by the design team. * Your code will be reviewed via pull requests to ensure clean, project-aligned code. * You’ll implement CI/CD pipelines using EAS Build and EAS Submit. * Over time, you’ll take on additional responsibilities, such as reviewing colleagues’ code and supporting their growth. **Salary Range:** €45,000 – €55,000 annually, depending on profile. Are you up for the challenge?