ITS Application Services (ENET) Engineer

MARGO; City Of London; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

A global technology firm is seeking an experienced ITS Application Services Engineer to enhance its low-latency infrastructure for electronic trading systems. The role focuses on ensuring high connectivity and performance across FX and Fixed Income platforms. Candidates should have a strong background in low-latency networking, experience with messaging middleware, and automation skills in scripting languages. This position is hybrid, based in Central London.

Qualifications

• Strong background in low-latency networking and performance tuning.
• Proven experience with messaging middleware in performance-sensitive environments.
• Hands-on packet analysis skills.

Responsibilities

• Deliver and maintain a low-latency trading environment.
• Lead post-incident analyses using packet captures.
• Build scripts and IaC for self-healing systems.

Skills

Low-latency networking

TCP/IP

Multicast

Performance tuning

Messaging middleware (Solace, Tibco)

Wireshark

Automation with Python

Observability platforms (Geneos, Prometheus)

Real-time trading applications

Tools

Wireshark

Grafana

Prometheus

Linux (Red Hat/CentOS)

Terraform

Ansible

Job description

MARGO is hiring an experienced ITS Application Services Engineer to join a Global Markets technology team. You’ll support and enhance the low-latency infrastructure powering electronic trading systems - ensuring connectivity, performance, and reliability across FX and Fixed Income platforms.

📍 Location: Hybrid, Central London

Your mission:

Deliver and maintain a world-class, low-latency trading environment – managing messaging middleware, network connectivity, observability tooling, and capacity planning to meet front‑office demands.

What you’ll do:

• Connectivity & Monitoring Deploy and support global market connectivity (Solace/Tibco, multicast, TCP/IP) across 30+ sites. Implement SRE principles: automated health checks, alerting, SLIs/SLOs, and capacity forecasts.
• Incident & Performance Management Lead deep‑dives post‑incident analyses (e.g., market events), using packet captures (Wireshark/tcpdump/Corvil). Maintain dashboards (Geneos, Prometheus, Grafana) for proactive issue detection.
• Automation & Resiliency Build scripts (Python/Bash/PowerShell) and IaC for self‑healing systems and reduced manual toil. Execute lab‑based testing and benchmarking for new connectivity solutions.
• Collaboration & Delivery Partner with global network, platform, and development teams to onboard applications and define standards. Own change‑management processes, operational handoffs, and documentation (topologies, runbooks).

Technical fit – what we’re looking for:

Strong background in low‑latency networking: TCP/IP, multicast, traffic shaping, performance tuning. Proven experience with messaging middleware (Solace, 29West, Tibco, LBM) in performance‑sensitive environments. Hands‑on packet analysis using Wireshark, tcpdump, Corvil (custom decoder skills a bonus). Scripting/automation with Python, Bash, or PowerShell. Familiarity with observability platforms (ITRS Geneos, Prometheus, Grafana). Experience supporting real‑time trading applications, feed handlers, matching engines. Excellent communication – able to translate technical metrics into business insights.

Nice to have:

• Exposure to FIX/market‑data protocols and order‑routing architectures.
• Hands‑on use of CI/CD pipelines and IaC tools (Terraform, Ansible).
• Experience with capacity planning and error‑budget management.

Tech stack & skills:

• Middleware: Solace/Tibco/LBM
• Networking: TCP/IP, multicast, BGP/OSPF, traffic shaping
• Monitoring: ITRS Geneos, Prometheus, Grafana, Corvil
• Automation: Python, Bash, PowerShell, IaC
• Systems: Linux (Red Hat/CentOS), hybrid cloud infrastructure

Recruitment process:

• Intro call with MARGO Talent Acquisition
• Technical deep‑dive with Margo consultant
• Meeting with the bank’s hiring team