Sr. Site Reliability Engineer (SRE)

What We're Looking For

• Strong experience supporting front-office trading systems in a production environment, ideally within Equities or Capital Markets, with hands-on knowledge of Fidessa, OMS/EMS platforms, order routing, client connectivity, and post-trade processing.
• Strong understanding of the trade lifecycle and FIX Protocol, including FIX 4.2, 4.4 and 5.0, message analysis, session behaviour, sequence resets, rejects, cancels/replaces, drop copy, and client onboarding flows.
• Strong troubleshooting capabilities across Linux/Unix, Windows Server, networking, databases, messaging, and application layers, alongside scripting or automation experience using Python, Bash/Shell, SQL, PowerShell, or Perl.
• Experience with monitoring and observability technologies such as Splunk, Grafana, Prometheus, Nagios, Datadog, OpenTelemetry, CloudWatch, or ELK Stack, plus database and messaging technologies relevant to production trading environments.
• Clear communication, prioritisation, and problem-solving skills, with the ability to collaborate effectively with traders, business users, technology teams, infrastructure teams, and stakeholders while carefully assessing business and operational impact.

Bonus Points For

• Experience supporting Cash Equities alongside additional asset classes such as Futures, Options, ETFs, Swaps, Bonds, or Derivatives.
• Knowledge of TCP, UDP, multicast/unicast, latency analysis, firewall flows, connectivity troubleshooting, and packet-level diagnostics.
• Experience with CI/CD and DevOps tooling such as Jenkins, Bamboo, Bitbucket, Git, GitHub Actions, JFrog, Ansible, Terraform, ArgoCD, ServiceNow, JIRA, or Confluence.
• Familiarity with AWS or Azure and container platforms and tooling such as Docker, Kubernetes, OpenShift, Terraform, Helm Charts, or Lens.
• Experience supporting compliance, legal, audit, or regulatory queries relating to trading activity, client flows, production logs, or production events._