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.
The personal data you provide will be used by Blockchain to process your application. To learn more about your rights, see our Applicant Privacy notice.
