Principal Engineer – Hands-on High-Throughput Systems

twentyAI in London seeks a Principal Engineer to stay hands-on while shaping the architecture and technical direction of high-throughput financial platforms. You will design backend services in Java, drive distributed systems, and champion best practices across teams.

You will lead technical design discussions, own complex initiatives from concept to production, and collaborate with product, architecture, security and operations to enhance observability, reliability and performance.

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