Back-End Engineer, Trading

Collaborate with cross-functional teams — product, frontend, trading — to adapt the platform quickly to new features and market conditions.

Ensure high availability, reliability, and scalability of trading services, with a sharp focus on latency, observability, and testing.

Contribute to architecture discussions and technical decisions, writing clean, maintainable code and sharing knowledge across the team.

WHAT YOU WILL NEED

Professional experience building backend services, ideally in Kotlin and/or Python.

Solid experience designing and building backend services and REST APIs; experience with WebSockets or other real-time streaming protocols such as NATS/JETSREAM is a plus.

Working knowledge of SQL and experience integrating with multiple internal or third-party services.

An understanding of performance fundamentals — identifying bottlenecks, managing latency, and building systems that stay responsive under load; experience with real-time or event-driven systems is a plus.

Strong problem-solving skills and clear communication with both technical and non-technical colleagues.

Curiosity and enthusiasm for learning new technologies; interest in financial markets or crypto is a plus, not a requirement.

Familiarity with Docker/Kubernetes and cloud environments (AWS) is a plus.

COMPENSATION & PERKS

Full-time salary based on experience and meaningful equity in an industry-leading company

Role based in our London office, with a mandatory in-office presence four days per week

Work from Anywhere Policy - up to 20 days to work remotely 

ClassPass 

Budgets for learning & professional development 

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 ----- 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.

Find Jobs in United Kingdom on Arbeitnow