Senior Infrastructure Engineer - Remote

Our client in the fintech industry is looking for someone who is the on-premises backbone of the infrastructure team. While the DevOps and Cloud Infrastructure Engineers own the AWS and CI/CD layer, you own the physical and virtualised layer: Linux server estate, network fabric, VPN connectivity to payment providers, and the on-premises Kubernetes clusters that run production workloads in regulated or low-connectivity markets.

• Linux Estate: Own full lifecycle, provisioning, patching, and CIS hardening of bare-metal and Linux VMs (RHEL/Debian) using Ansible—zero manual configuration.
• Virtualization & Storage: Manage KVM/Proxmox hypervisors, VM resource allocation, NFS/block storage, and verified backup/snapshot routines.
• Network Engineering: Manage VLANs, switching, routing (BGP/OSPF), and firewall rules; troubleshoot network issues at depth via packet captures and log reviews.
• VPN Mesh: Maintain and extend production-critical IPSec VPN links connecting internal infrastructure to payment providers and partner networks.
• Core Network Services: Administer DHCP, internal/external DNS zones, and network segmentation for server and container traffic.
• On-Prem Kubernetes: Provision, upgrade, and operate RKE2/K3s clusters; troubleshoot container networking (Calico/Flannel) and persistent storage (Longhorn).
• Hybrid Alignment: Partner with cloud teams to standardize Helm charts, namespace conventions, and resource quotas across cloud and on-prem clusters.
• Infrastructure as Code (IaC): Use Terraform for hybrid connectivity definitions (gateways, DNS, firewall rules) and Ansible for estate configuration management.
• Observability: Deploy and maintain infrastructure monitoring (host metrics, network latency, disk/node health) using Grafana or equivalent.
• Incident Response: Define precise alert thresholds to prevent alert fatigue and participate in the tier-3 on-call infrastructure rotation.
• Documentation & Automation: Author explicit runbooks with rollback procedures for every system change; eliminate manual tasks through script automation.

Requirements

• 3-5 years in infrastructure engineering focusing on bare-metal, Linux VMs, and on-premises environments over pure cloud instances.
• Linux Administration: Production-depth RHEL or Debian systems skills (kernel tuning, systemd, networking stack, and security hardening).
• Network Engineering: Hands-on design and operation of VLANs, routing (static/dynamic), IPSec VPNs, and packet-level troubleshooting.
• Automation (Ansible): Advanced capability writing clean, idempotent playbooks maintained as production code.
• Infrastructure as Code (IaC): Terraform experience applied to on-premises, hybrid, and non-cloud resources.
• Kubernetes: Operational on-premises experience (RKE2, K3s, or kubeadm) covering deployment, upgrades, networking, and storage layers.

Education and Experience

• Minimum Level 5 Diploma or higher in IT or a related field

Benefits

• Remote-first flexibility with occasional travel to Europe for team operations.