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 from a variety of technical backgrounds with a proven track record in building scalable, reliable and performant systems. 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.

WHAT YOU WILL DO

• You will be part of the Brokerage - Orders team who enable buy, sell and swap of crypto
• Develop and integrate APIs from new and existing services, to our various product applications.
• 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
• 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 7 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
• Preferably exposure to technologies such as Kafka, PostgreSQL, Redis
• We use Kotlin, PostgreSQL, Kafka, Redis, Datadog, Amplitude, Grafana, BigQuery, ApacheSpark and more
• Have a basic understanding of reactive systems using CQRS and event sourcing. A bonus would be experience using Akka.
• A passion for crypto and the transformations it enables

COMPENSATION & PERKS

• 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 needs at the time.

You may contact our Data Protection Officer by email at [email protected]. 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.