Overview
Contract Role – Senior Low-latency Core Java Developer – London/Hybrid – 12 months initial – Inside IR35 Job Title:
Senior Low-latency Core Java Developer Location:
Hybrid – 4 days onsite per week in London Contract Type:
Contract Duration:
12 months initial Core focus is hands-on low-latency Java development Exposure to low-latency trading systems in banks or similar institutions Experience building or contributing to low-latency systems Typically around 10+ years overall engineering experience Ideally ~4-5 years working on low-latency systems (flexible if strong elsewhere) Has worked on systems handling very high throughput (e.g. billions of events/day) Able to design and implement components within a Java-based system Comfortable working in finance/trading environments (FX preferred) FX / electronic trading experience (spot, forwards, swaps, execution systems) (preferred) Some familiarity with rates or equities environments acceptable Crypto experience is less relevant (not ideal for latency expectations) Nice-to-have technologies: KDB (but not required), Solace messaging (nice to have). Kubernetes / cloud / messaging tech (not core focus for this role) Has worked in multiple complex production systems (often banking/trading firms) Must be able to work from a high-level “loose” specification Expected to: Break down epics into Jira tasks, estimate and plan their own work, work fairly independently Strong hands-on coding role (not architecture-only) Not looking for
Pure microservices / REST-only backend developers Candidates with misleading CVs (claims of low-latency without real experience) Pure UI/front-end developers (React/TypeScript not needed) Very junior engineers or those with only brief exposure to low-latency systems
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