Full job descriptionLinux / DevOps Engineer (Infrastructure & Container Platforms)


Role Overview
We are partnering with a fast-growing, regulated financial technology and trading infrastructure firm in the heart of the City of London to hire across two closely aligned infrastructure positions (an internal Platform/DevOps Engineer and a client-facing Managed Services Deployment Engineer).


Please note:This is strictly an infrastructure-first role. We are looking for engineers from a genuine Linux Systems Administration background who understand operating systems, networking, and bare-metal/virtualised internals—not application or software developers.


You will join a small, hands-on engineering function responsible for building, automating, and deploying mission-critical, low-latency containerised platforms across both internal on-premise environments and external client sites.


Key Responsibilities
*Linux & Infrastructure Automation: Build, configure, and manage complex Linux systems at scale across on-prem, virtualised, and containerised environments.
*Container Platforms & Orchestration: Deploy, validate, and manage multi-service containerised applications across Kubernetes, OpenShift, Docker/Podman, and VMware platforms.
*Infrastructure as Code (IaC) & Tooling: Drive automation initiatives using Terraform, Ansible, Bash, and Python to eliminate manual effort and standardise deployments.
*Release & Environment Management: Translate release notes and configuration requirements into reliable, repeatable production and pre-production environments (using GitOps patterns, Helm, ArgoCD, and GitLab CI).
*Troubleshooting & Root Cause Analysis: Diagnose complex OS-level, networking, and container issues across live and pre-production environments.
*Client & Stakeholder Delivery (Managed Services track): Depending on your preference and skillset, either focus purely on internal platform engineering or take a client-facing role guiding external financial clients through on-site/remote setups, upgrades, and operational handovers.


What You Bring (Essential)
*Strong Linux SysAdmin Foundation: Deep, hands-on experience administering RedHat / RHEL, Rocky Linux, or CentOS. You are comfortable on the command line and understand how systems fit together under the hood.
*Core Networking Knowledge: Practical understanding of TCP/IP, DNS, routing, load balancing, VLANs, firewalls, and TLS/mTLS certificate management.
*Containerisation Experience: Proven experience deploying and troubleshooting containerised workloads (Docker/Podman as a minimum; hands-on Kubernetes or OpenShift is highly desirable).
*Scripting & Automation: Strong scripting skills in Bash and Python, alongside experience with Git for version control.
*Communication: Clear, pragmatic communicator capable of writing solid runbooks/documentation and collaborating with both internal teams and external stakeholders.


Nice to Have
*Hands-on experience with Infrastructure-as-Code and configuration management tools (Terraform, Ansible).
*Experience with CI/CD and GitOps tooling (GitLab CI, ArgoCD, Helm).
*Background within fintech, financial markets, or other regulated, low-latency environments.


Location: City of London (Hybrid – minimum 3 days per week in the office)
Salary: £80,000 – £110,000 (Dependent on experience)
Job Type: Permanent