Senior Backend Developer - Wallets (100% Remote - United Kingdom)

Bitfinex; London; Remote; GBP 70,000 - 100,000; Full time

Job summary

A leading company in the digital finance sector is looking for a Senior Backend Developer to enhance their Wallet Development Kit. This remote position requires advanced backend development skills, and offers the opportunity to work on cutting-edge blockchain applications, ensuring security and scalability. Candidates with experience in DeFi and proficiency in multiple programming languages are particularly encouraged to apply.

Qualifications

• Experience in wallet creation or DeFi is beneficial.
• Nice to have: knowledge of high-availability systems.

Responsibilities

• Design and develop innovative backend solutions using agile methodologies.
• Ensure scalability and responsiveness of backend services.
• Maintain high security standards to protect user assets and data.

Skills

Agile methodologies

Backend development

Security best practices

Programming skills in Go

Programming skills in Rust

Programming skills in C++

Knowledge of message queues

Job description

Senior Backend Developer - Wallets (100% Remote - United Kingdom), London

Location:

London, European Union

Job Reference:

waah8dc6

Posted:

10.07.2025

Expiry Date:

24.08.2025

Job Description:

Join Tether and Shape the Future of Digital Finance

At Tether, we’re pioneering a global financial revolution with innovative blockchain solutions that enable seamless, secure, and instant digital transactions worldwide. Our products include the trusted stablecoin USDT, digital asset tokenization, energy-efficient Bitcoin mining solutions, and advanced data sharing platforms.

We are looking for a Senior Backend Developer to contribute to our Wallet Development Kit (WDK), an open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. Prior experience with wallet creation or DeFi is beneficial.

Responsibilities

• Design and develop innovative backend solutions using agile methodologies.
• Ensure scalability and responsiveness of backend services to support platform growth.
• Maintain high security standards to protect user assets and data.
• Build or integrate crypto wallets for DeFi and blockchain applications.
• Develop modular, scalable architectures and complex APIs.
• Quickly adapt to new technologies and implement security best practices.

Nice to have

• Experience with high-availability system concepts.
• Additional programming skills in Go, Rust, or C++.
• Knowledge of message queues (Redis), caches, and job queues.

Please note that applicants may need a work permit if not holding a passport from the country of the vacancy.

All applications should be made via the 'Apply now' button. Bank or payment details should not be provided when applying.