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Senior Backend Engineer, DeFi Wallet

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Blockchain

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Location:
United Kingdom , London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

Blockchain.com is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain.com has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions. Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a proactive, thorough Senior Software Engineer to help build our Defi platform. You will play a critical role in building financial and crypto-native products, services and APIs. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices.

Job Responsibility:

  • Build on our DeFi wallet platform, expanding support for multiple networks
  • Develop and integrate APIs from new and existing services, to our various product applications
  • Be a part of a dedicated engineering team committed to applying the highest standards and shipping secure and performant systems
  • Work in the core of Blockchain.com’s solution, interacting directly with multiple blockchains and internal services
  • Work extensively with open source technologies (Docker, Kafka, PostgreSQL)
  • Ensure security is at the forefront of everything you do
  • Work within interdisciplinary teams to continually deliver the highest quality products to our users
  • Optimise existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain’s products

Requirements:

  • Integrity
  • Highly motivated, self-driven, passionate about crypto currencies
  • Knowledge of how blockchain systems work, preferably worked closely with two
  • Ability to find your way around when confronted to a novel problem not many people faced before
  • Innate curiosity, knowledge of multiple programming languages, strong advocate for the best engineering practices and thrive on learning new technologies
  • Pragmatic approach to developing clean solutions to complex problems
  • Pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring
  • Take full responsibility for all the projects you work in
  • Preferably experience in at least one JVM based language such as Java, Kotlin, Scala or willing to learn these languages
What we offer:
  • Full-time salary based on experience and meaningful equity in an industry-leading company
  • Hybrid model working from home & awesome office location in the heart of London
  • Unlimited vacation policy
  • Apple equipment
  • Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year
  • The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field
  • Flexible work culture

Additional Information:

Job Posted:
December 06, 2025

Employment Type:
Fulltime
Work Type:
Hybrid work
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