Senior Infrastructure Engineer - Critical Systems Patch Lead

Techary Inc.; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Techary Inc. is seeking a Senior Infrastructure Engineer to lead exception patching for a critical remediation and compliance programme in a regulated financial services environment.

You will own patches end-to-end, manage manual patches for sensitive servers, databases and virtualization systems, and coordinate with owners, vendors and the change process to ensure secure, compliant operations.

Qualifications

• 5+ years of hands-on systems administration in enterprise environments.
• Strong Linux system administration expertise.
• Strong Windows Server administration.
• Proven patching experience on production databases in high-availability setups.
• Experience with ITIL and change-management processes.

Responsibilities

• Manually patch Linux (RHEL) and Windows Server systems that fall outside automated tooling, including critical and business-sensitive servers.
• Patch databases (SQL Server, Oracle, PostgreSQL) including high-availability configurations.
• Patch and maintain virtualization platforms (VMware, Hyper‑V, KVM).
• Coordinate with application owners and vendors to agree certified patch levels and maintenance windows for critical systems.
• Plan each change with pre-checks, backups, rollback plans and post-change validation.
• Coordinate snapshot-before-change with the backup specialist on sensitive tiers.
• Document systems that cannot be patched and propose compensating controls.
• Act as escalation point for the patching team on high-risk changes.
• Work out-of-hours and weekend windows as needed.
• Log and feed status into weekly reporting.

Skills

5+ years experience

Linux admin

Windows admin

Database patching

Virtualisation

Troubleshooting

ITIL/change

Ownership

Tools

VMware

Hyper‑V

KVM

SQL Server

Oracle

PostgreSQL

Job description

Techary Inc. is seeking a Senior Infrastructure Engineer to lead exception patching for a critical remediation and compliance programme in a regulated financial services environment.

You will own patches end-to-end, manage manual patches for sensitive servers, databases and virtualization systems, and coordinate with owners, vendors and the change process to ensure secure, compliant operations.