Back-End Engineer, Fraud

Blockchain.com; London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading company in digital assets is seeking a Back-End Engineer to enhance fraud prevention systems. You will build scalable and reliable backend solutions, advocate best practices, and work within interdisciplinary teams. This role offers a hybrid work model and opportunities for professional development.

Benefits

Full-time salary based on experience

Meaningful equity

Hybrid work model

Work from Anywhere Policy

ClassPass

Budgets for learning & professional development

Unlimited vacation policy

Qualifications

• 3-5+ years experience in building scalable backend systems.
• Experience with JVM based languages and microservices.

Responsibilities

• Enhance fraud prevention mechanisms.
• Optimize systems for scalability and performance.
• Ensure security through advanced encryption.

Skills

Programming

Customer Focus

Test Coverage

Tools

Kotlin

PostgreSQL

Kafka

Redis

Datadog

Amplitude

Grafana

BigQuery

ApacheSpark

Job description

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 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 Engineeryou will be participating in technical discussions and making a positive impact on the team's development by advocating the best engineering practices.

WHAT YOU WILL DO

• You will be part of the Brokerage - Fraud team who actively enhance blockchain.com ’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 (SardineAI 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

WHAT YOU WILL NEED

• 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, PostgreSQL, Kafka, Redis, Datadog, Amplitude, Grafana, BigQuery, ApacheSpark and more
• A passion for crypto and the transformations it enables

NICE TO HAVE

• SardineAI 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.
• ClassPass
• 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.

You may contact our Data Protection Officer by email at [e-mail]. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.

Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf. Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.

Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.

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