Senior Infrastructure Engineer; Fully Remote

• 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 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.