Linux System Engineer in London

We are seeking a hands-on Linux System Engineer to join our London office. This role is responsible for supporting and evolving the core infrastructure that underpins our production systems, as well as development and research platforms. We are looking for someone with a modern, automation-focused mindset who is comfortable operating in business-critical environments. You will play a key role not only in maintaining stability and resilience, but also in improving and modernising our infrastructure practices over time. This role combines traditional infrastructure ownership (Linux, hardware, storage) with automation, scripting, and infrastructure-as-code principles.

Primary Duties

• Implement and support Infrastructure-as-Code using Terraform and Ansible
• Write and maintain scripts (Bash, Python) to automate operational tasks and reduce manual processes
• Identify opportunities to modernise and optimise infrastructure and operational processes
• Work closely with Managed Service Providers (MSPs) and internal stakeholders
• Administer and manage NFSv4 file systems
• Administer and support Red Hat Enterprise Linux (RHEL) servers in a production environment
• Contribute to Disaster Recovery planning, testing, and continuous improvement
• Maintain and improve monitoring, logging, and alerting systems
• Investigate and remediate Cyber security alerts from our suite of monitoring tools
• Contribute to infrastructure hardening and security best practices

Technical Stack & Tools

• Strong hands-on experience administering RHEL in production environments
• Experience managing on-premise physical hardware infrastructure
• Strong scripting skills in Bash and/or Python
• Experience with automation and configuration management tools (e.g., Ansible)
• Experience implementing or working with Terraform or other Infrastructure-as-Code tooling
• Solid understanding of Disaster Recovery principles and testing
• Experience working alongside or managing Managed Service Providers (MSPs)
• Good understanding of infrastructure security fundamentals and system hardening
• Experience working within a financial services firm or similarly regulated environment

Experience, Knowledge & Skills

• 5+ years infrastructure experience.
• A pragmatic, hands-on infrastructure engineer who enjoys solving complex technical problems.
• An automation-first mindset, with a drive to eliminate repetitive manual tasks.
• Strong sense of ownership and operational discipline.
• Comfortable challenging legacy processes and proposing modern alternatives.
• Continuous improvement mentality with a focus on reliability and efficiency.
• Good systems thinking and architectural awareness beyond individual servers.
• Ability to work independently while collaborating across technical teams.
• Clear communication skills and ability to engage with both technical and non-technical stakeholders.
• Active Directory administration
• Pure Storage (Pure SAN)
• HashiCorp stack (Vault, Consul, Nomad)
• VMware
• Exposure to vulnerability management or security auditing practice

Educational & Professional Qualifications

• Educated to degree (or equivalent) level or higher, preferably from a leading university.
• A degree with some mathematical and/or computing content.
• Professional certifications are not required but relevant training or certifications are a plus.

Benefits

Systematica Investments provides you with excellent benefits from day 1. We provide private medical insurance for you and your immediate family. We offer competitive salaries combined with an attractive bonus and pension plus free drinks and snacks at the office. We also offer paid parental leave with enhanced leave for mothers/primary carers.

Equal Opportunity Statement

We are an equal opportunity employer and value diversity at our company.