Infrastructure Technical Lead

Position: Infrastructure Technical LeadStart Date: ASAPDuration: 15 -Month Contract (extendable)Location: UK/Poland – Remote, Swedish time zoneRate: £500 – £550 per day inside of IR35Reference: 20877We are seeking an infrastructure engineer with strong Linux, networking and infrastructure security backgrounds, able to lead technical direction while remaining an individual contributor.

This role is centred on self-managed, dedicated and bare-metal infrastructure rather than public cloud, with security responsibilities layered across encryption, key management and certificate lifecycle management.

Tasks:

• Manage Ubuntu Linux servers in production, including systemd, logs, package management, processes and filesystems.
• Operate infrastructure with dedicated hosting providers such as Hetzner or OVH, or in colocation data centers such as Digital Realty/Interxion or Cyberlynk.
• Configure and debug routing, DNS, firewalls and VPNs.
• Work with physical servers, including diagnosing hardware failures.
• Assess the security implications of infrastructure changes, including patching vulnerabilities, enforcing access control and handling secrets.
• Troubleshoot issues with a focus on identifying root cause rather than symptoms.
• Plan infrastructure changes with an understanding of system interdependencies, avoiding disruption to production.
• Use scripting and configuration management tools such as Ansible.
• Use metrics, dashboards, alerts and logs to monitor and understand systems.
• Translate compliance requirements into practical infrastructure changes.
• Work closely with developers, raising questions early.
• Lead technical direction for the team while remaining hands-on.

Skills & Attributes:

• 8 to 10+ years of experience, with deep platform engineering expertise and a hands‑on coding background.
• Able to lead technical direction while remaining an individual contributor.
• Hands‑on experience managing Ubuntu Linux servers in production, including systemd, logs, package management, processes and filesystems.
• Experience operating infrastructure with dedicated hosting providers such as Hetzner or OVH, or in colocation data centers such as Digital Realty/Interxion or Cyberlynk.
• Strong understanding of routing, DNS, firewalls and VPNs, and how to debug them.
• Experience with physical servers, including diagnosing hardware failures.
• Understanding of the security implications of infrastructure changes, including patching vulnerabilities, enforcing access control and handling secrets.
• Strong troubleshooting skills, with a focus on identifying root cause rather than symptoms.
• Understanding of how systems depend on one another, and the ability to plan changes without disrupting production.
• Experience with scripting and configuration management tools such as Ansible.
• Experience using metrics, dashboards, alerts and logs to monitor and understand systems.
• Experience translating compliance requirements into practical infrastructure changes.
• Ability to work closely with developers and raise questions early.

Preferred Skills:

• Experience running a fleet of servers (hundreds of hosts).
• Experience with ZFS.
• Experience with WireGuard networks.
• Experience with KVM/QEMU virtualization.
• Experience with VictoriaMetrics, Grafana and ELK.
• Ability to read Go code.
• Experience with rootless containers such as Podman.
• Experience with CoreDNS and Cloudflare.
• Experience with Terraform and Kubernetes.
• Experience implementing encryption at rest and encryption in transit.
• Experience automating certificate renewal and rotation as part of certificate lifecycle management (CLM), including issuance and revocation.
• Experience with PKI (Public Key Infrastructure).
• Experience implementing security controls and applying security best practices to infrastructure.
• Experience with enterprise certificate lifecycle management (CLM) platforms.
• Experience with self-hosted key management tools, including key rotation.
• Experience with secrets management tools, such as SOPS, OpenBao/Vault or AWS Secrets Manager.
• Experience implementing encryption at rest on Linux hosts, including disk and filesystem encryption.
• Experience automating certificate renewal for services running on Linux hosts.
• Experience with security frameworks or audits, such as ISO 27001 or SOC 2.

Networking People (UK) is acting as an Employment Business in relation to this vacancy.

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