Senior Software Engineer, Core Full Time

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 evolving the core platform which drives our retail products.

Our engineering teams are involved in all aspects of the product lifecycle, from idea generation, design, prototyping, planning, execution and shipping. As a senior software 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

• Build distributed, scalable and highly performant, (soft real-time) software to handle our rapidly growing user base using the most appropriate languages and tools,
• Be a part of a dedicated engineering team committed to rapidly shipping, and iterating on products that directly impact millions of users,
• Be at the forefront of the cryptocurrency ecosystem building out a new set of financial services, systems and architecture,
• Work extensively with open source technologies (Kafka, Cassandra, PostgreSQL),
• 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 products to our users,
• Optimise existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain’s products.

WHAT YOU WILL NEED

• The foremost quality for this position or any position at Blockchain.com is integrity,
• You possess an innate curiosity, are a strong advocate for the best engineering practices and thrive on learning new technologies,
• You take a pragmatic approach to developing clean solutions to complex problems,
• You have experience building and shipping highly-available, fault tolerant, low latency, scalable architectures (distributed systems),
• You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring,
• Understanding of algorithms, data structures, databases and large-scale systems,
• An appreciation of the entire stack (including but not limited to front-end, service-oriented architecture, message brokers, databases, network layers, etc.) and how they impact the performance of your application,
• Preferably experience in at least one JVM based language such as Java, Kotlin (, Scala) or willing to learn these languages,
• Tools and frameworks, which helps to deal with concurrency and distributed systems related issues, like Vert.X, Akka, Quarkus, Micronaut, etc. (but be prepared to change).

COMPENSATION & PERKS

• Unlimited vacation policy; work hard and take time when you need it.
• Unlimited books policy; order the technical resources you need or simply pick something up from our company library.
• Apple equipment.
• Full-time salary based on experience and meaningful equity in an industry-leading company.

APPLICATION

• Favorite GIF.
• LinkedIn profile.
• Link to Github, StackOverflow, personal website and/or blog (if applicable).

When you apply to a job on this site, the personal data contained in your application will be collected by one or more of the following subsidiaries of Blockchain Luxembourg S.A (each, a “Controller”):

• Blockchain Access UK Ltd.
• Blockchain (GB) Limited
• Blockchain (US), Inc.
• Blockchain (LT), UAB

You may contact our Data Protection Officer by email at dpo@blockchain.com. 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 to right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.