Ultra-Low-Latency Rust Engineer - Hybrid UK

Juxt Ltd.; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work model

Full medical

10% matched pension

Premium events

Job summary

Juxt Ltd. is seeking experienced Rust engineers for a demanding systems and performance programme with a global financial leader. You will rewrite core parts of an equities execution platform in Rust, focusing on ultra-low latency and careful memory layout to minimize tail latency.

The team is small, AI-assisted, and adheres to automated testing as non-negotiable. Work is hybrid with UK-based candidates who can attend the London area office at least three times a week.

Qualifications

• Experience writing allocation-free, latency-conscious Rust for hot paths.
• Strong understanding of latency distributions and tail latency minimization.
• Knowledge of CPU caches, memory layout, and NUMA awareness and their impact on latency.
• Proven automated testing discipline including deterministic replay and simulation.
• Experience with AI-assisted engineering tools is a plus.

Responsibilities

• Rewrite core parts of an equities execution platform in Rust.
• Build fast, reliable near-metal systems with automated tests.
• Collaborate with a small, AI-assisted team to define production Rust standards.

Skills

Rust programming

Low-latency systems

Performance measurement

Automated testing

AI-assisted tooling

Tools

Tokio

Claude Code

Job description

Juxt Ltd. is seeking experienced Rust engineers for a demanding systems and performance programme with a global financial leader. You will rewrite core parts of an equities execution platform in Rust, focusing on ultra-low latency and careful memory layout to minimize tail latency.

The team is small, AI-assisted, and adheres to automated testing as non-negotiable. Work is hybrid with UK-based candidates who can attend the London area office at least three times a week.