Senior Low-Latency Infra Engineer (Remote UK)

Reactive Markets Limited; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Private health insurance

Pension

Life insurance

Dental cashback

Cycle to work

Job summary

Reactive Markets Limited is seeking a Senior Infrastructure Engineer to run and grow our trading platform network and cloud estate. The role is remote (UK-based) with occasional on-site work at data centres, spanning London, New York, Singapore and from Q1 2027 Tokyo.

You will work in a small, expert team, handling cross-connects, hosts, containers and AWS, with emphasis on automation via Ansible, Git and Terraform. Expect on-call rotation and close collaboration with TechOps.

Qualifications

• 4+ years running production infrastructure in latency-sensitive environments

Responsibilities

• Operate and grow the network and cloud estate behind the trading platform
• Manage cross-connects, colo sites and AWS networking
• Collaborate with TechOps and Head of Infrastructure to ensure timely delivery and reliability

Skills

Networking

Linux

IaC

AWS networking

Colocation

BGP

Latency awareness

Tools

Ansible

Git

Terraform

Job description

Reactive Markets Limited is seeking a Senior Infrastructure Engineer to run and grow our trading platform network and cloud estate. The role is remote (UK-based) with occasional on-site work at data centres, spanning London, New York, Singapore and from Q1 2027 Tokyo.

You will work in a small, expert team, handling cross-connects, hosts, containers and AWS, with emphasis on automation via Ansible, Git and Terraform. Expect on-call rotation and close collaboration with TechOps.