Hands-on role in a small expert infrastructure team running a live global trading network.
Work closely with the Head of Infrastructure, following problems from cross-connects through hosts, containers, and AWS.

What You'll Work On:

Low-latency networking across colocation sites, including BGP peering and cross-connects.
Bringing new sites to application-ready, starting with Tokyo.
Hybrid AWS connectivity, Linux automation, monitoring, and capacity planning.

What We Need:

4+ years running production infrastructure in a latency-sensitive environment.
Strong networking, Linux, infrastructure as code, and AWS networking.
Methodical, evidence-led troubleshooting and clear documentation.

What You Get:

Real ownership of a live global trading network with few layers of process.
A senior seat in a small team with flexible remote working and out-of-hours time taken back.
Up to 38 days leave, private health insurance, pension, life insurance, dental/optical cashback, and cycle to work.

Reactive Markets

Reactive Markets builds high-performance trading systems for OTC markets, handling over $75 billion in daily volumes across FX, equities, and cryptocurrency. Its small, senior engineering team focuses on reliable, low-latency infrastructure and connecting 50+ leading liquidity providers.

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