DDI Subject Matter Expert

Job description

DDI Subject Matter Expert (SME)

Overview

We are seeking a highly experienced DDI SME with deep expertise in enterprise DNS, DHCP, and IPAM environments. This role requires strong hands-on experience with VitalQIP (Cygna QIP), Cygna AMS/AMM, and F5 GTM (BIG-IP DNS), including building and managing GTM clusters in large-scale environments.

This is a senior-level, strategic and operational role supporting mission-critical global DDI services.

What You’ll Do

• Define, deliver, and support strategic DDI services aligned to business goals
• Act as SME for enterprise DNS, DHCP, and IPAM platforms
• Lead DDI-related projects end-to-end, ensuring successful delivery
• Manage and maintain enterprise-scale DNS and DHCP environments
• Ensure high availability and minimise disruption to customers
• Perform risk assessment, change planning, and post-change validation
• Drive service improvements and lifecycle optimisation
• Design, build, and manage F5 GTM clusters
• Configure and support Global Server Load Balancing (GSLB)
• Integrate GTM with enterprise DNS infrastructure
• Global Collaboration & AgileWork within a global team environment
• Participate in agile ceremonies (stand-ups, sprint planning, retrospectives)
• Support operational deliverables across regions

Required Experience (Must Have)

• Deep enterprise experience managing DNS and DHCP environments

Strong hands-on expertise with:

• VitalQIP (Must Have)
• Cygna AMS/AMM (Must Have)
• F5 GTM (Must Have – including GTM cluster build)
• Experience managing Global Server Load Balancing (GSLB)

Deep networking knowledge:

• IP addressing & subnetting
• Routing
• DNS
• DHCP

Additional / Desirable Experience

Experience with:

• Infoblox
• EfficientIP
• Linux administration
• SQL knowledge
• Automation exposure (Ansible, Jenkins, Git/GitHub)
• Scripting skills (Python, Perl, Shell, SQL, YAML, JavaScript)
• Strong service management & stakeholder engagement capability
• Experience supporting large, mission-critical, global platforms

Extra information

Status

Open

Education Level

Secondary School

Location

Sheffield

Type of Contract

Full-time jobs

Published at

17-02-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English