Linux Platform Engineer

Barlowe LLP; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Relocation Support

Lunch provided (Just Eat for Business)

30 days annual leave

9% pension contributions

Healthcare and life assurance

Cycle-to-work

Monthly company events

Job summary

G-Research is seeking a Linux Engineer to build, maintain and evolve the Linux platforms (RHEL and Ubuntu) underpinning our compute environment. You will work across the full OS stack, from builds to observability, security and tooling, with an emphasis on automation and AI-enabled operations.

You will design agentic frameworks for autonomous detection, contribute to vulnerability response, and help ensure OS health and compliance across a large-scale research infrastructure in London.

Qualifications

• Strong hands-on Linux experience, especially RHEL and Ubuntu.
• Deep knowledge of Linux internals and boot process.
• Experience with Linux security, patch management and CIS benchmarks.
• Programming in Python and IaC (Ansible).
• Interest in AI-driven operations.

Responsibilities

• Building, releasing and maintaining core Linux OS images across the estate.
• Developing provisioning and lifecycle management systems, including PXE boot, kickstart and cloud-init.
• Designing and maintaining APIs, databases and package tooling used across the firm.
• Applying Infrastructure as Code practices, primarily using Ansible, to automate deployments.
• Leading vulnerability response, including CVE triage and kernel and package remediation.
• Helping design agentic frameworks for safe, autonomous detection and remediation.
• Improving observability and telemetry to track OS health, provisioning and compliance.

Skills

Linux systems

RHEL

Ubuntu

Linux internals

Kernel optimisation

eBPF

Python

Ansible

CIS benchmarks

AI-driven operations

Problem-solving

Collaboration

Tools

PXE boot

kickstart

cloud-init

Job description

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we're building a world-class platform to amplify our teams' most powerful ideas.

Take the next step in your career.

The role

We're seeking a Linux Engineer to build, maintain and evolve the Linux platforms (RHEL and Ubuntu) that underpin our compute environment. You'll work across the full Linux stack, from OS builds and provisioning systems through to observability, security and custom tooling. Mathematics and science are at our core; AI pushes them further to unlock bigger thinking and bigger impact. We expect every colleague to actively bring AI into their daily workflow to deliver impact we didn't think was possible. In this role, that means helping design and use agentic frameworks to move the platform towards autonomous, closed-loop operations. Security is a core part of the role, from hardening and patching through to vulnerability response, and the role offers the chance to develop deep technical expertise in Linux internals, automation and performance optimisation while contributing directly to infrastructure that supports large-scale quantitative research.

Key responsibilities of the role include:

• Building, releasing and maintaining core Linux OS images across the estate
• Developing provisioning and lifecycle management systems, including PXE boot, kickstart and cloud-init
• Designing and maintaining APIs, databases and package tooling used across the firm
• Applying Infrastructure as Code practices, primarily using Ansible, to automate deployments
• Leading vulnerability response, including CVE triage and kernel and package remediation
• Helping design agentic frameworks for safe, autonomous detection and remediation
• Improving observability and telemetry to track OS health, provisioning and compliance

Who are we looking for?

• Strong hands‑on experience with Linux systems, particularly RHEL and Ubuntu
• Deep knowledge of Linux internals, such as boot process, kernel modules, filesystems and package management
• Experience with kernel optimisation and performance tuning, such as scheduler, memory and I/O, is desirable
• Knowledge of eBPF for observability, performance analysis and security enforcement is a strong plus
• Strong programming skills, for example in Python
• Experience with Infrastructure as Code (Ansible) and broader automation practices
• A strong understanding of Linux security, including hardening, patch management and compliance frameworks such as CIS benchmarks
• Experience with, or a genuine interest in, agentic or AI-driven operations is beneficial
• You don't need to have all of the above, but a problem‑solving mindset and strong collaboration skills are essential

Why join us?

• Highly competitive compensation plus annual discretionary bonus
• Lunch provided (via Just Eat for Business) and dedicated barista bar
• 30 days' annual leave
• 9% company pension contributions
• Informal dress code and excellent work/life balance
• Comprehensive healthcare and life assurance
• Cycle-to-work scheme
• Monthly company events
• Relocation Support

Relocation Support

If you're relocating from within the UK or internationally to join us in London, we offer a comprehensive range of support services to assist you all the way. All costs associated with your relocation and immigration are covered by G-Research. Concierge service: Your personal consultant will arrange travel, help find your new home and manage your move. They're also on hand to help with more bespoke requests too. Immigration support: We'll partner you with an expert consultant who will guide you through the full immigration process.

G-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions. We want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section.

At G-Research, we are passionate about the intersection of finance, technology, and the future. We offer a dynamic, flexible and highly stimulating culture where world-beating ideas are cultivated and rewarded. We are proud to employ some of the best people in their field and to nurture their talent in our collaborative working environment.