Senior React Native Developer – Crypto Wallet

About the role

We are looking for a Senior React Native Developer to join a fast‑moving fintech team building a high‑performance, non‑custodial crypto wallet. The role is based in Belgium and involves end‑to‑end ownership of core mobile features that handle real user funds.

Key responsibilities

• Design, develop, and maintain core wallet features such as sending/receiving assets, transaction history, swaps, bridges, and on‑ramp flows.
• Lead the implementation of advanced financial products including crypto cards, IBAN‑based payments, subscriptions, and multi‑provider integrations.
• Own the full feature lifecycle: architecture, coding, testing, production monitoring, and iterative improvements based on user feedback.
• Collaborate with Product, Design, Backend, and QA teams in an autonomous, international environment.
• Participate in on‑call rotation to ensure reliability of financial operations.
• Produce technical documentation, internal guides, and occasional product demos.

Required profile

• 5+ years of frontend development experience, with at least 3 years building production‑grade React Native applications.
• Proven experience in high‑load fintech or crypto applications, preferably non‑custodial wallets.
• Strong understanding of secure software development practices in financial contexts.

Required skills

• React, React Native, TypeScript
• Jest, Detox testing frameworks
• Expo modules and React Native tooling
• Familiarity with EVM‑compatible chains, Bitcoin‑family networks, Tron, Solana, or TON
• Mobile performance, scalability, and maintainability best practices