Backend Engineer - Wallets

**This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Backend Engineer - Wallets in Brazil.** This role sits at the core of a global digital finance ecosystem, focused on building and maintaining secure, high-performance backend systems that power wallet infrastructure and digital asset transactions at scale. You will be responsible for designing resilient services that support real-time financial operations across a decentralized environment. The position requires strong engineering expertise to ensure scalability, reliability, and security in mission-critical systems used by millions of users worldwide. You will work in a fast-paced, remote-first engineering culture where innovation, ownership, and technical excellence are essential. This is an opportunity to contribute to foundational financial infrastructure leveraging blockchain and distributed systems technologies. Your work will directly impact the efficiency, safety, and accessibility of global digital transactions. Accountabilities: * Design, develop, and maintain scalable backend services supporting wallet infrastructure and digital asset transactions. * Contribute to building high-performance, real-time systems using modern backend and distributed architecture principles. * Ensure system scalability and reliability to support continuous global user growth and transaction volume. * Implement and maintain strong security practices to protect user data, funds, and platform integrity. * Work with microservices-based architectures to build modular, maintainable, and resilient systems. * Collaborate with cross-functional engineering teams to deliver innovative and robust product features. * Optimize database interactions and performance using technologies such as MySQL and MongoDB. * Participate in system design discussions, code reviews, and continuous improvement of engineering standards. **Requirements:** * Strong proficiency in Node.js and JavaScript for backend development. * Experience building and scaling complex backend systems or distributed platforms. * Solid understanding of microservices architecture and event-driven systems. * Experience working with databases such as MySQL and MongoDB in production environments. * Knowledge or exposure to peer-to-peer technologies and decentralized systems. * Strong focus on security best practices in backend engineering. * Ability to quickly learn new technologies and adapt in a fast-evolving environment. * Strong problem-solving mindset with experience working on high-scale or mission-critical systems. **Benefits:** * Fully remote work environment with global collaboration * Opportunity to work on cutting-edge blockchain and digital finance infrastructure * High-impact role contributing to global wallet and transaction systems * Competitive compensation aligned with experience and market standards * Exposure to advanced distributed systems and fintech innovation * Fast-paced, engineering-driven culture with strong ownership opportunities * Long-term growth potential in a rapidly scaling global platform