Senior Platform Engineer

At Omnia Training, we’ve brought together some of the UK’s most innovative defence training organisations under one powerful mission: to transform the British Army’s training system and create the best-trained Army in the world.

Omnia Training is redefining the British Army’s collective training. To do that, we are looking for the best and brightest minds from across the UK. Omnia Training is at the heart of the UK’s bold Land Industrial Strategy.

This is more than a job - it’s a mission. You will be part of a high-impact, collaborative environment, where every person in our team plays a critical role in delivering Omnia Training’s vision; designing, delivering, and transforming collective training.

MPORTANT - PLEASE READ BEFORE APPLYING

This role is based full-time onsite in Warminster, Wiltshire. You will be required to work from the Warminster site five days per week. This is not a hybrid or remote role, and we cannot accommodate candidates who are only able to attend the site for part of the working week.

Security Clearance (SC) is a mandatory requirement for this role. To be considered, you must have been resident in the UK for the last five years and be eligible to obtain UK Security Clearance. If you do not meet this residency requirement, we will not be able to progress your application.

Please only apply if you meet both of these requirements: five days per week onsite in Warminster, Wiltshire, and five years’ UK residency for SC clearance.

What You’ll Be Responsible For:

• Deploy and configure systems on MODCloud / D2S / OpenShift

• Manage Kubernetes environments, networking and connectivity, as well as security-aligned configurations.

• Build and maintain CI/CD pipelines, GitOps workflows, and environment configurations to ensure repeatable and reliable deployments.

• Support running systems by monitoring health, diagnosing platform and infrastructure issues and resolving deployment failures.

• Work closely with integration engineers, customers and modelling engineers.

• Support and maintain existing simulation and training systems, as well as existing deployment and virtualisation tools.

• Apply SRE practices to improve system reliability, including observability (metrics, logs, tracing), incident response, and root cause analysis.

What We Are Looking For:

This is not a pure cloud or greenfield platform role. You will be working across cloud-native services, legacy systems, and integrated simulation environments, ensuring they operate reliably as a single platform.

Strong systems and infrastructure mindset

• Comfortable working across modern and legacy environments

• Calm under pressure during outages or failures

• Pragmatic and delivery-focused, with a bias toward keeping systems running.

• Strong collaborator across engineering disciplines

• Adopts an SRE mindset, focusing on reliability, observability, and continuous improvement of running systems.

Key Technical Proficiencies:

• Expert working knowledge of Kubernetes, Helm, Teraform, Ansible, and Docker.

• Understanding of Distributed Systems in production.

• Experience working within constrained or regulated environments (e.g. MODCloud, D2S, OpenShift) and adapting to their tooling and limitations.

• Experience building and operating CI/CD pipelines with automated deployment workflows.

• Familiarity with GitOps approaches and tools such as ArgoCD.

• Strong understanding of Network fundamentals, Zero Trust solutions, service to service communications and distributed system connectivity.

• Ability to diagnose issues across infrastructure, networking, and application layers.

• Experience supporting or integrating legacy and non-cloud-native systems alongside modern infrastructure.

• Experience in developing with Go or Python as well as shell scripting.

• Experience applying Site Reliability Engineering (SRE) practices such as monitoring, alerting, incident response, and service reliability improvement.