Senior Java Engineer for Real-Time Fintech Trading Platform

Ocho in Belfast is seeking a Senior Java Technical Specialist with 5+ years of fintech experience to own high‑throughput trading infrastructure, including the core matching engine and clearing system.

You will partner with Staff Engineers to shape architecture, implement ultra‑low-latency messaging using Aeron, expose customer APIs via FIX, REST and WebSocket, and drive production‑grade delivery in a true exchange‑scale environment.