Backend Engineer - Wallets

About the role

We are looking for a Backend Engineer focused on wallet infrastructure to help shape the future of decentralized finance. You will design, build and maintain high‑performance backend services that power global digital‑asset solutions, working with international teams in a fast‑paced, innovation‑driven environment.

Key responsibilities

• Design, develop and maintain robust backend services for secure and scalable wallet infrastructure.
• Build and optimise high‑performance microservices capable of handling large‑scale real‑time transactions.
• Collaborate with cross‑functional engineering teams to deliver innovative backend solutions aligned with product and business needs.
• Implement best‑practice security measures to protect user assets, sensitive data and system integrity.
• Contribute to architectural decisions and continuously improve reliability, scalability and maintainability.
• Work with databases and distributed systems to ensure efficient data storage, retrieval and synchronization.
• Investigate, troubleshoot and resolve performance issues while identifying optimisation opportunities.
• Stay current with emerging blockchain, peer‑to‑peer and backend technologies to drive platform innovation.

Required profile

• Strong professional experience with Node.js and JavaScript backend development.
• Proven experience building and maintaining high‑availability, distributed platforms.
• Ability to quickly learn and adapt to new technologies, frameworks and environments.
• Strong analytical and problem‑solving skills with a focus on performance, reliability and scalability.
• Excellent communication and collaboration skills within remote and international teams.
• Experience working in Agile development environments.

Required skills

• Node.js
• JavaScript
• Microservices architecture
• Distributed systems
• Peer‑to‑peer and decentralized technologies
• MySQL
• MongoDB
• Backend security principles and secure coding practices