Senior Infrastructure Engineer — Hybrid, Cloud & Networking Lead

Reward; Greater London; Hybrid; GBP 75,000 - 110,000; Full time

Benefits offered by this job

Hybrid working

Pension 6% matched

Income protection

Critical illness cover

Life insurance

Optical cover

Perks at Work

Cycle to work scheme

Season ticket loans

Company events

Job summary

Reward is seeking a Senior Infrastructure Engineer to support, maintain and improve Reward’s core infrastructure across office, data centre, hosted and cloud-connected environments. You will work across networks, firewalls, servers, Windows services, monitoring, backups and cloud infrastructure, applying senior technical know‑how to keep systems reliable and secure.

This hands‑on role requires practical troubleshooting, ability to work with IT teams and third‑party suppliers, and willingness to

Qualifications

• Experience in an infrastructure, systems administration, network engineering or similar technical role.
• Good knowledge of networking, including TCP/IP, DNS, DHCP, VLANs, routing, switching, VPNs and Wi‑Fi.
• Hands‑on experience with wired and wireless network management, monitoring and troubleshooting.
• Hands‑on experience with firewalls, VPNs and connectivity troubleshooting.
• Strong Windows Server and Active Directory experience.
• Experience supporting physical, hosted or virtual server environments.
• Familiarity with server monitoring, lifecycle management, patching, backup jobs and infrastructure maintenance.
• Experience supporting infrastructure change, upgrades or improvement activity.
• Comfortable working across both logical and physical infrastructure.
• Strong troubleshooting skills and a practical, hands‑on approach.
• Good documentation and communication skills.
• Ability to take responsibility for assigned work, provide sound technical judgement and collaborate effectively as part of a team.

Responsibilities

• Supporting and maintaining Reward’s core infrastructure across office, data centre, hosted and cloud-connected environments.
• Managing and troubleshooting office and data centre network services, including Wi‑Fi, wired networks, LAN, WAN, VPN, routing, switching, VLANs and network links.
• Supporting the design, build, monitoring, maintenance and improvement of network infrastructure across offices, data centres and connectivity services.
• Managing core network services including DNS, DHCP, IP addressing and related infrastructure services.
• Supporting firewall changes, VPNs, connectivity issues and infrastructure security improvements.
• Administering Windows Server, Active Directory, Group Policy and related Microsoft infrastructure services.
• Supporting server monitoring, lifecycle management, patching, upgrades, backups and resilience activity.
• Monitoring infrastructure health, investigating issues and helping resolve incidents.
• Supporting backup and disaster recovery processes, including backup job monitoring, restore validation and operational improvements.
• Supporting physical infrastructure work such as cabinet/rack activity, cabling, equipment moves and data centre visits.
• Supporting the build of AWS environments in line with agreed standards and standard build processes.
• Leading or supporting defined infrastructure changes, upgrades and improvement projects.
• Providing senior technical input into infrastructure standards, documentation, troubleshooting and improvement activity.
• Keeping documentation, diagrams and support notes up to date.
• Working with the IT Manager, Infrastructure Engineering, SecOps, Desktop Engineering and third‑party suppliers.
• Participating in out‑of‑hours maintenance activities and an on‑call support rotation where required.
• Supporting infrastructure‑related compliance activity for PCI‑DSS, ISO27001 and internal governance standards.

Skills

Networking

Windows Server

Active Directory

Firewalls

VPNs

Wi‑Fi

Job description

Reward is seeking a Senior Infrastructure Engineer to support, maintain and improve Reward’s core infrastructure across office, data centre, hosted and cloud-connected environments. You will work across networks, firewalls, servers, Windows services, monitoring, backups and cloud infrastructure, applying senior technical know‑how to keep systems reliable and secure.

This hands‑on role requires practical troubleshooting, ability to work with IT teams and third‑party suppliers, and willingness to