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 revolutionizing the way people interact with cryptocurrencies and are seeking talented Junior, Mid or Senior Back-End Engineers to join our dynamic and innovative teams. As a Back-End Engineer at, you will have the opportunity to work on exciting projects across various teams, including SuperApp, DeFi, Payments, Brokerage, and Fraud, among others. 

The ideal candidates have strong knowledge of distributed systems design, are proficient in coding on the JVM (one of Java, Kotlin, Scala), understand the importance of scalability and reliability and are looking to be part of cutting-edge projects in a fast-paced environment. 

Our engineering teams are involved in all aspects of the product lifecycle, from idea generation, design, prototyping, planning, execution, shipping and monitoring. We are looking for software engineers who care about the customers, software excellence, are advocates of best practices and love learning new skills.


  • Be at the forefront of the cryptocurrency ecosystem building out new distributed software to handle our rapidly growing user base of 75M+ wallets to reach 1B+ customers
  • Become a key member of a dedicated engineering team committed to rapidly shipping, and iterating on products that directly impact millions of users
  • Advocate best practices, code quality, test coverage and drive technical discussions
  • Build scalable services with Kotlin, and deal with problems like synchronization, asynchronous operations, database optimisations, scalability and reliability of systems
  • Gain exposure to an array of technologies such as Kafka, PostgreSQL, Redis, Docker etc
  • Optimise existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain’s products
  • Ensure security is at the forefront of everything you do, employing advanced encryption schemes to secure user and company data
  • Work within interdisciplinary teams to continually deliver the highest quality software to our users


  • You know at least one programming language in depth
  • You have at least one year of experience in any JVM based languages (such as Java, Kotlin, Scala) and are confident in your ability to build, debug and ship microservices
  • You have experience building and shipping highly-available, fault tolerant, production ready distributed backend systems
  • You actively participate in creating product and software specifications before implementing them
  • You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring
  • You inspire other engineers to do better
  • Understanding of data structures, databases and large-scale distributed systems
  • Preferably exposure to technologies such as Kafka, PostgreSQL, Redis, RabbitMQ
  • You are customer focused and continuously suggest how the backend can provide the best Customer Experience
  • A passion for crypto and the transformations it enables
  • We use Kotlin, PostgreSQL, Kafka, Redis, Datadog, Amplitude, Grafana, BigQuery, ApacheSpark and more


  • 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; work hard and take time when you need it
  • Apple equipment
  • 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  

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business need at the time.

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