Our client is an early-stage financial technology company building a general, non-custodial consumer application that allows users to hold, spend, and transfer money across borders without relying on a traditional bank. The platform is powered by blockchain technology but is designed to feel familiar and accessible to mainstream users. It removes much of the complexity traditionally associated with cryptocurrency and self-custody while allowing users to remain in control of their funds. The company serves customers internationally and is currently focused on expanding its presence among younger consumers in the United States. Backed by leading investors, the business has significant financial runway and operates with a small, highly technical engineering team that values speed, product quality, and ownership. We are looking for a Senior Software Engineer specialising in React Native to join as one of the company's key early engineering hires. This role will own major areas of the mobile application from end to end, including user interface development, state management, API integration, testing, deployment, and application releases. Product quality, usability, responsiveness, and attention to detail are central to the role. Own major areas of the React Native mobile application from initial concept through production release. Build features across user interface development, state management, API integration, testing, and deployment. Debug complex issues across iOS, Android,



and backend integrations. Improve application performance, animations, responsiveness, and overall product quality. 5+ years of professional software engineering experience shipping production software. Strong experience building and releasing production applications using React Native. Strong product mindset and attention to user experience. Ability to work independently within a fast-moving early-stage environment. Backend or full-stack experience using Node.js and APIs. Experience with EVM, Solidity, blockchain, or cryptocurrency products. Early-stage startup experience. The strongest candidates are likely to have founded a company or worked within an early-stage startup where they developed a high-ownership operating mindset. Experience within cryptocurrency-native products or leading consumer-fintech companies is valuable. However, strong product engineers from smaller or lesser-known companies will also be considered. The company is particularly interested in senior engineers who care deeply about what users experience rather than focusing only on technical functionality. Genuine interest in blockchain-based financial products is sufficient. Ability to ship high-quality features quickly and independently. Are unable to work regularly from the office. Build a global consumer financial product powered by blockchain technology. Access a substantial individual budget for AI development tools.

📌 React Software Engineer (Comunidad de Madrid)
🏢 Surgecrypto
📍 Comunidad de Madrid