Systems Administrator (Linux & Infrastructure)

Aspect Capital; Greater London; On-site; GBP 48,000 - 64,000; Full time

Job summary

Aspect Capital, a London-based award-winning systematic hedge fund, is seeking a Systems Administrator to join our Infrastructure team. The role focuses on supporting production infrastructure across Linux and mixed platforms, with 2–5 years of experience preferred.

You will work across virtualization, storage, networking, cloud services, and automation tooling to maintain reliable systems and contribute to best practices.

Qualifications

• 2–5 years of experience supporting production infrastructure.
• Strong Linux administration skills incl. Ubuntu and RHEL.
• Experience in mixed Linux and Microsoft environments.
• Experience with scripting/automation.
• Familiarity with AD/DNS/DHCP.

Responsibilities

• Supporting Linux systems and infrastructure services across a mixed Linux (Ubuntu and RHEL) and Microsoft environment
• Assisting with the deployment, maintenance and improvement of servers and infrastructure services
• Troubleshooting system, application, performance and availability issues
• Working with automation and configuration management tooling
• Supporting virtualisation, storage, networking and cloud-based services
• Contributing to documentation, monitoring and operational best practices

Skills

Linux admin

Active Directory

Scripting

Cloud exposure

Windows environments

Tools

Puppet

Ansible

TeamCity

Jenkins

Git

Docker

Grafana

Terraform

Kubernetes

Artifactory

Job description

Aspect Capital is an award-winning systematic hedge fund based in London that manages over $9 billion of client assets. Technology plays a critical role in the success of our business. Our team supports a diverse technology estate spanning Linux and Microsoft platforms, virtualisation, networking, storage, cloud services and automation tooling.

The Role:

We are looking for a Systems Administrator to join our Infrastructure team. This role is ideal for someone with 2-5 years' experience supporting production infrastructure who enjoys working across a broad range of technologies, particularly Linux, while also being comfortable in mixed-platform environments.

Key Responsibilities:

• Supporting Linux systems and infrastructure services across a mixed Linux (Ubuntu and RHEL) and Microsoft environment
• Assisting with the deployment, maintenance and improvement of servers and infrastructure services
• Troubleshooting system, application, performance and availability issues
• Working with automation and configuration management tooling
• Supporting virtualisation, storage, networking and cloud-based services
• Contributing to documentation, monitoring and operational best practices

Requirements:

• 2-5 years' experience supporting production infrastructure environments
• Good Linux administration skills, including services, networking, permissions, filesystems and logging
• Experience working in mixed Linux and Microsoft environments
• Experience supporting physical, virtual or cloud-based infrastructure
• Familiarity with Active Directory, DNS, DHCP and authentication services
• Experience with scripting or automation using Bash, PowerShell or Python
• Experience with configuration management or automation tooling such as Puppet, Ansible or similar
• Exposure to AWS or other cloud platforms
• Familiarity with Active Directory-integrated Linux environments
• Experience with tools such as TeamCity, Jenkins, Artifactory, Git, Docker, Grafana, Terraform or Kubernetes would be beneficial but is not required.