Linux Engineer

1 week ago

London, United Kingdom Harrington Starr Full time

Linux/Kubernetes Engineer - - Investment BankUp to £100,000 Basic salary5-days a week onsite in City of LondonWhat's on offer:10% employer pension contributionDiscretionary bonus30 days holidayPrivate health and life insuranceEnhanced parental leaveFlexible working and wellbeing supportAboutJoin a tech-forward financial services firm combining 400+ years of heritage with bold investments in modern technology. With a strong in-house development culture and agile delivery mindset, the business is pushing boundaries in AI, machine learning, and high-performance, low-latency trading infrastructure.The 300-person technology team operates in a Scrumban framework and covers Cloud, DevOps, Cybersecurity, Software Engineering and more. In this Kubernetes-focused role, you'll help build and scale a bare-metal HPC platform for a broad spectrum of use cases – from latency-sensitive trading to big data and analytics – with the opportunity to expand into cloud where appropriate.What you'll do:Design and manage highly available Kubernetes clusters across multiple datacentresCollaborate with Linux, infrastructure, and SOC/CERT teams to secure and optimise bare-metal environmentsSupport mission-critical workloads including low-latency trading systems, leveraging tools like Calico, OPA/Gatekeeper, and Kyverno for policy enforcement and securityReplace legacy networking infrastructure with a Kubernetes-first architecture, treating pods as first-class citizens in a highly available, BGP-based leaf/spine fabricLead systems administration on Ubuntu and RHEL systems, tuning OS configurations for performance, observability, and complianceDevelop services like DNS-based discovery and egress gateways for smart routing of financial trafficAutomate infrastructure using Terraform, Ansible, Git, and CI/CD toolingWhat we're looking for:Deep Linux/UNIX experience (Ubuntu & RHEL)Kubernetes administration expertise, ideally on bare-metalSolid understanding of networking (TCP/IP, BGP, VLANs, VRF)Scripting and IaC experience (Python, Bash, Helm, Terraform)Experience working in regulated environments with PAM, policy-as-code, and strong security postureIf you're passionate about building high-impact infrastructure in a modern, agile setting - without the red tape - this is an opportunity to truly shape the future of tech in finance.

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