Information Security

Linux Security and Systems Engineer – Startup FinTech

Quant Capital

London · Greater London · United Kingdom

Overview

As Linux Systems Engineer at Quant Capital's fintech client in London, you will manage multi-site, internet-facing Linux infrastructure with high security requirements. You will drive threat detection, security automation, and infrastructure hardening while contributing to in-house development and release automation. You will plan multi-site failover and shape architecture through exploration of new technologies. You will work in a fast-paced, agile environment that values openness and innovation.

Pay / Benefits
  • ongoing training
  • structured career path
  • excellent salary and benefits package
  • London-based role
  • open, relaxed environment
Responsibilities
  • Provision and manage business-critical Linux computing systems across multiple sites (compute, storage, network)
  • Threat assessment and detection
  • Security automation
  • All security processes
  • In-house infrastructure development and operation in Linux
  • Continuous security review and infrastructure hardening
  • Build and release infrastructure & automation
  • Planning and engineering multi-site fail-over solutions
Key requirements
  • 4 years commercial Linux CentOS or Debian administration experience
  • Puppet configuration management or equivalent automation experience
  • Hadoop / Spark
  • Experience of security standards, best practices and principles
  • Strong scripting in at least one language (Ruby, Python)
  • Maven, Jenkins
  • Monitoring and alerting in Sensu / Graphite
  • Security automation and experience with SELinux Kerberos etc
  • Puppet
  • Hadoop / Spark
  • Ruby
  • Python
  • Maven
  • Jenkins

Reference: WJ-747_31182955 · Posted 01 Nov 2026

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