Remote Senior Backend Developer - Node

Salary: £63,000 - 103,000 per year

Requirements

• 6+ years of Node/JavaScript experience
• Familiar with microservices architecture
• Have actively participated in the development of a complex platform
• Good experience interacting with databases such as MySQL and MongoDB
• Ability to quickly learn new technologies
• Good understanding of security practices
• Experience with blockchain integration is a plus
• Comfortable with high-availability concepts is a plus
• Ruby, Rust, or C++ skills are a plus
• Experience with message queues (Redis), caches, and job queues is a plus

Responsibilities

• Work on the development of backend components across our services, including our main trading application, Bitfinex Pay, Lightning Network support, and blockchain integrations
• Develop new products and features using agile methodologies to improve the trading experience
• Build backend services that remain smooth, responsive, and real-time as we scale
• Help maintain and improve our API, backend processes, and security standards to protect our users

Technologies

• API
• Backend
• Blockchain
• Support
• JavaScript
• MongoDB
• MySQL
• Network
• Redis
• Ruby
• Rust
• Security
• microservices
• NodeJS

More

We are Bitfinex, a digital asset trading platform founded in 2012 and one of the first professional platforms built to serve cryptocurrency traders and institutions. Our team is entirely remote and built around ownership, autonomy, lifelong learning, and a strong culture of collaboration from concept to launch. We offer the freedom to work as you please, as long as execution is strong, and we are focused on building a free and accessible global digital economy and laying the foundation for a decentralized future.

last updated 28 week of 2026