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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IT Core Systems Engineer - **Company:** Mountain Warehouse Ltd - **Location:** London, UK (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Systems Engineering, Disaster Recovery, Domain Name System (DNS), Routing, Systems Architecture, Virtualization Technology, Backup and Restore, Information Technology - **Published:** June 20, 2026 - **Apply:** https://uk.indeed.com/viewjob?jk=6b56275582e75dd1 ## About the Role Do you have experience in Virtualization?, * Identity platform redesign, migration, consolidation, or security hardening initiatives * Designing and testing disaster recovery and failover processes within production environments * Delivering or contributing to security-focused infrastructure initiatives * Supporting and improving enterprise infrastructure platforms across hybrid environments * Working with a broad range of infrastructure technologies, including identity, virtualisation, storage, networking, and backup systems * Enterprise networking fundamentals, including routing, segmentation, DNS, and firewall concepts Working Style * Project-driven environment with a high level of ownership and accountability * Small engineering team with the autonomy to deliver meaningful technical improvements * Primarily remote working, with on-site attendance once per week (or as required) at the London office and datacentre * Participation in an on-call rota and occasional out-of-hours work Who Are We Looking For? * 5+ years' experience within core infrastructure, systems enginee Able to identify weaknesses or inefficiencies within existing platforms and drive improvements * Focused on reducing complexity, improving maintainability, and lowering operational overhead * Comfortable taking ownership of systems, platforms, or technical deliverables with minimal supervision * Able to work from defined technical requirements and low-level designs while ensuring high implementation standards * Strong analytical and problem-solving skills, with a structured and methodical approach * Security-conscious, designing solutions with resilience, recoverability, and operational stability in mind * Comfortable operating as a trusted technical contributor within a wider engineering team * Strong communication and documentation skills across both technical and non-technical audiences * Motivated to continuously learn and develop through both self-led study and formal training ## Description We are looking for an experienced Core Systems Engineer to help design, deliver, and support infrastructure platforms that are highly available, secure, and resilient. This role is focused on infrastructure modernisation and project delivery, covering hybrid infrastructure, identity services, datacentre operations, resilience, and platform improvement initiatives. You will play a key role in shaping the future direction of our core systems as we continue evolving towards a more modern, secure, and cloud-aligned technology estate. While there is an element of BAU support and operational ownership, the role is primarily centred around delivering strategic infrastructure improvements and engineering-led projects., Delivering projects to improve identity, infrastructure, and core systems architecture, following modern security and operational best practices * Leading infrastructure modernisation initiatives, including service migrations, platform improvements, and resilience enhancements * Designing, implementing, and validating disaster recovery and failover solutions across core systems * Owning and maintaining core infrastructure platforms across hybrid and datacentre environments * Supporting the business transition towards modern infrastructure and cloud-aligned services * Producing and maintaining high-quality technical documentation, standards, and operational procedures * Acting as an escalation point for complex 3rd line infrastructure issues where required * Contributing to platform stability, security, scalability, and operational resilience across the wider estate ## Related Videos - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Chaos in Containers - Unleashing Resilience](https://www.wearedevelopers.com/videos/1065-chaos-in-containers-unleashing-resilience) - [Convincing Product teams to Adopt Gitops in a Large Org](https://www.wearedevelopers.com/videos/1936-convincing-product-teams-to-adopt-gitops-in-a-large-org) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Integrating backups into your GitOps Pipeline](https://www.wearedevelopers.com/videos/757-integrating-backups-into-your-gitops-pipeline) - [System Resilience: Surviving the Software Storm](https://www.wearedevelopers.com/videos/874-system-resilience-surviving-the-software-storm) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Mastering Remote Work: Tips for Developers](https://www.wearedevelopers.com/magazine/558-mastering-remote-work-tips-for-developers) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)