Back-End Engineer, Fraud London

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,  has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.

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 software engineers with a proven track record in building scalable, reliable and performant systems for Fraud. You will play a critical role in building financial and crypto-native products, services and APIs. As a Back-End Engineer you will be participating in technical discussions and making a positive impact on the team's development by advocating the best engineering practices.

• You will be part of the Brokerage - Fraud team who actively enhance  ’s fraud prevention.
• Fraud engineers build fraud prevention mechanisms in conjunction with our data science team for our payment rails by using our internal services together with our partners (Sardine
  
  AI and Sift)
• Work with our risk, compliance teams including our providers to resolve customer issues
• Advocate best practices, code quality, test coverage and drive technical discussions
• 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 3 - 5+ years experience building and shipping highly-available, fault tolerant, production ready distributed backend systems
• You have experience in any JVM based languages (such as Java, Kotlin, Scala) and are confident in your ability to build, debug and ship microservices
• You are customer focused and continuously suggest how the backend can provide the best Customer Experience
• You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring
• We use Kotlin, Postgre
  
  SQL, Kafka, Redis, Datadog, Amplitude, Grafana, Big Query, Apache Spark and more
• A passion for crypto and the transformations it enables

• Sardine
  
  AI or Sift experience
• Working with Data science and Analysts
• Understanding of fraud models and workflows

COMPENSATION & PERKS

• Full-time salary based on experience and meaningful equity in an industry-leading company
• Hybrid model working from home & our office in Central London (SoHo)
• Work from Anywhere Policy:
  You can work remotely from anywhere in the world for up to 20 days per year.
• Class Pass
• Budgets for learning & professional development
• Unlimited vacation policy; work hard and take time when you need it
• The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field

#LI-Hybrid

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 needs at the time.

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