Senior System Engineer

Job description

Senior Systems Engineer (Linux, On-Prem, Python)

London / Dublin (Hybrid)

Important

This role is not suited to candidates with primarily cloud-based experience (AWS/GCP/Azure).

We’re specifically looking for engineers who have worked directly with on-premise infrastructure, physical servers, and OS-level systems.

The Opportunity

We’re partnered with a global, high-performance trading technology environment operating at extreme scale.

Their infrastructure underpins real-time systems across multiple global data centres, where latency, reliability, and performance are critical to the business.

This is not a cloud-first environment. You’ll be working directly with physical servers, bare metal infrastructure, and highly tuned Linux systems that require deep technical understanding and precision.

⚙ What You’ll Be Doing

• Designing, building, and maintaining high-performance Linux server environments
• Troubleshooting complex issues across production infrastructure at scale
• Writing and maintaining automation and tooling (Python + Bash)
• Tuning systems to improve latency, performance, and efficiency
• Managing configuration, deployments, and OS-level environments
• Working closely with internal engineering teams and vendors globally
• Contributing to capacity planning and long-term infrastructure strategy

What We’re Looking For

• 5+ years experience working with Linux in production environments
• Strong experience with on-prem / physical server infrastructure (non-cloud)
• Solid Python scripting experience (essential)
• Deep understanding of networking fundamentals and protocols
• Experience with tools such as Ansible, Kickstart, package management, version control
• Exposure to low-latency or high-performance environments
• Experience with storage (NAS) and system-level configuration (BIOS, kernel tuning, etc.)
• Strong troubleshooting mindset with the ability to operate in fast-paced, high-pressure environments

Why This Role

• Work on mission-critical systems where performance actually matters
• Direct exposure to large-scale, globally distributed infrastructure
• Highly technical environment with strong engineering standards

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

26-03-2026

Profession type

Accountancy

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English