Tech Lead, Crypto Lending & Savings

Blockchai; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Equity in the company

London in-office 4 days/week

Work from Anywhere 20 days/year

ClassPass

Unlimited vacation

Job summary

Blockchain in London is seeking a Technical Lead for Lending & Savings to steer engineering direction for crypto savings and lending products. You will define architecture, lead a small team, and closely partner with the Business Lead to translate product vision into scalable, reliable systems.

You will stay close to the code while shaping architecture, mentoring engineers, and ensuring high-quality software delivery.

Qualifications

• Strong experience building backend systems using Kotlin or Java.
• Experience designing distributed, event-driven systems using Kafka or similar messaging technologies.
• Strong knowledge of PostgreSQL and relational database design.
• Experience with Redis or other NoSQL technologies.
• Deep understanding of microservices architecture, APIs, distributed systems, and cloud-native applications.
• Experience with monitoring, observability, incident response, and production operations.
• Strong debugging and performance optimization skills.
• Demonstrated experience shipping reliable production systems that process financial transactions.

Responsibilities

• Lead the technical direction and architecture of the Lending & Savings platform.
• Design and build scalable, secure, and highly available distributed systems.
• Make key architectural decisions balancing scalability, performance, security, and maintainability.
• Remain hands-on, contributing production-quality code and reviewing critical changes.
• Drive engineering best practices across system design, testing, deployment, observability, and operational excellence.
• Mentor engineers through code reviews, technical coaching, and day-to-day leadership.
• Own the delivery of technical initiatives from design through production.
• Work closely with the Business Lead and designers to translate product requirements into technical solutions.
• Break down complex initiatives into clear engineering milestones and execution plans.
• Identify technical risks early and propose pragmatic solutions.
• Ensure services remain resilient, performant, and secure as the platform scales.
• Partner closely with the Lending & Savings Business Lead to understand customer problems and product priorities.
• Provide technical input into product planning, helping shape solutions that balance customer value, engineering complexity, and delivery timelines.
• Collaborate with Product Design, Treasury, Trading, Risk, Compliance, and Infrastructure teams to build customer-focused solutions.
• Contribute to improving user journeys, performance, and platform reliability through continuous iteration.
• Lead, mentor, and grow a small team of engineers.
• Foster a culture of ownership, collaboration, and technical excellence.
• Raise engineering standards across code quality, documentation, testing, and operational maturity.

Skills

Kotlin or Java

Microservices architecture

Distributed systems

APIs

Debugging & performance

Tools

Kafka

PostgreSQL

Redis

Job description

Blockchain in London is seeking a Technical Lead for Lending & Savings to steer engineering direction for crypto savings and lending products. You will define architecture, lead a small team, and closely partner with the Business Lead to translate product vision into scalable, reliable systems.

You will stay close to the code while shaping architecture, mentoring engineers, and ensuring high-quality software delivery.