Senior Backend Developer - Node.js (Fully Remote, Worldwide)

Bitfinex; United Kingdom; Remote; GBP 89,000 - 133,000; Full time

Benefits offered by this job

Flexible work culture

Mentorship opportunities

Career development

Team-building activities

Knowledge sharing

Team-building

Social activities

Creative impact

Job summary

A leading cryptocurrency exchange is looking for a Senior Backend Developer to join their remote-friendly team. You will work on backend services for their platform, ensuring scalability and security. Ideal candidates should have exceptional Node/JavaScript skills and familiarity with microservices architecture. This role offers competitive pay, mentorship, and opportunities for professional growth.

Qualifications

• Exceptional skills in Node/JavaScript development.
• Experience in developing complex platforms.
• Good understanding of security practices.
• Solid knowledge of databases such as MySQL and MongoDB.

Responsibilities

• Develop backend components for Bitfinex services.
• Ensure scalability and performance of the API.
• Implement high-security standards in API services.
• Integrate APIs and services with blockchain-related technologies.

Skills

Node/JavaScript skills

Microservices architecture

Database experience

Security practices

Learning new technologies

MongoDB

Learning quickly

Security practices

Tools

MySQL

MongoDB

Redis

Job description

Senior Backend Developer - Node.js (Fully Remote, Worldwide)

The Original Bitcoin Exchange Inspired by Bitcoin's vision of financial freedom, we are committed to empowering individuals to transact and connect seamlessly across the globe. From the early days of the Bitcoin revolution, our mission has been to champion freedom through innovative, reliable, and accessible technology—ensuring that everyone, everywhere, has the tools to participate in a truly open and borderless world.

We are driven by a relentless pursuit of innovation and financial empowerment. By prioritizing education and delivering a cutting-edge platform, we enable users to seamlessly buy, hold, and trade digital assets with confidence. As the digital asset landscape rapidly evolves, we stay ahead—offering state-of-the-art trading services that empower both individuals and global liquidity providers. Our forward-thinking, agile approach ensures that financial freedom is not just a vision, but a reality for all.

Our team, composed of visionary individuals with practical expertise, focuses on crafting solutions to the market\'s toughest challenges. Despite our global presence and impact, we maintain a small, technology-focused core, fostering a culture of collaboration and innovation. We value integrity and autonomy, empowering our team to contribute from concept to launch. Driven by a passion for lifelong learning and a commitment to advancing freedom, we prioritize high-caliber products and services, with a proven track record of innovation that draws on the dexterity of our teams.

We’re looking for

Senior Backend Developer

Role: As a Senior Backend Developer, you will be part of the team that develops the backend components of all Bitfinex services (main trading application, Lightning Network support, Blockchain integrations, etc.). This includes:

• New products and features to provide a professional trading experience, developed and deployed using agile methodologies.
• Scalability: ensure backend services remain smooth, responsive, and real-time as the platform grows, including the Bitfinex API.
• Security: build API services and backend processes with high security principles to protect users.

What You Bring to the Table

• Exceptional Node/JavaScript skills
• Familiarity with microservices architecture
• Experience participating in development of a complex platform
• Experience with databases (MySQL, MongoDB)
• Ability to quickly learn new technologies
• Good understanding of security practices

Other Valuable Skills

• Experience with blockchain integration
• High-availability concepts
• Ruby, Rust or C++ skills are a plus
• Knowledge of Redis (queues), caches and job queues

What We Offer

• Flexible work & remote-friendly culture
• Mentorship & growth
• Competitive pay
• Career development opportunities
• Supportive team environment
• Learning & knowledge sharing
• Team-building activities
• Social activities (online & in-person)
• A collaborative environment where your creativity impacts the brand’s narrative

Recruitment Data & Security

As part of the hiring process, we collect personal data for recruitment purposes, processed in accordance with applicable data protection laws (GDPR, CCPA), and retained only as long as necessary. Assessments and communications are conducted through official Bitfinex channels. We do not request payment or sensitive banking information during recruitment. For questions, contact [e-mail].

Equal Opportunity

Bitfinex is committed to equitable opportunities. We do not discriminate based on race, religion, gender, age, disability, sexual orientation, gender identity, or any other protected status, across all stages of recruitment and contractual relationships.