Role Summary
The System Administration team is responsible for maintaining, upgrading, and managing Reward’s infrastructure, including office networks, data centre services, core platform tooling, and endpoint management. At the heart of this role is a commitment to ensuring stable, secure, and reliable IT operations for over 200 employees. This role is primarily infrastructure-focused, covering networking, server estate ownership, patching, backups, monitoring, and Microsoft 365 / Intune administration. A key part of the position is contributing to building stronger infrastructure standards and best-practice frameworks as our processes and tooling continue to mature.
Success in this role requires proactiveness, strong problem-solving skills, clear communication, and the ability to work effectively in a fast-paced environment where priorities can shift and processes may be evolving. The ideal candidate is solution-focused, adaptable, and confident working across a broad range of technologies.
Main responsibilities
* Onsite in the Belfast office 3 days per week (rota with other team members)
* Occasional travel to the London office (ad hoc support if required)
* Manage and support office networks (LAN/Wi-Fi): connectivity, stability, performance, design and build
* Firewall ownership: rules, NAT, segmentation, VPNs, firmware and operational support
* Switching and core network services: VLANs, routing, uplinks, redundancy and troubleshooting
* Network architecture & operations: standards, addressing strategy, DNS/DHCP, capacity planning
* Support and maintain on-prem / data centre server estate (hardware, OS, lifecycle, break-fix, upgrades)
* Data centre support: travel onsite (Central London) to install, manage and upgrade infrastructure; carry out BAU monitoring and remediation, with flexibility to support occasional out-of-hours maintenance or urgent fixes when required
* Server and infrastructure patching: execution, reporting and compliance adherence
* MS 365 and Intune administration: device policies, configuration baselines, deployment operations and compliance
* Backup ownership: monitoring, restore testing, retention compliance and continual improvement
* Infrastructure monitoring: dashboards, alerting improvements and increasing instrumentation coverage
* Tooling implementation: deploying and operating infrastructure tools (monitoring, inventory, endpoint tooling etc.)
* Security key and certificate management: renewals, storage and lifecycle management
* Improve processes, documentation and knowledge sharing across the SysAdmin team
* Support junior/mid-level SysAdmins through collaboration and knowledge transfer
* Provision of out of hours support (with potential on call in future)
* Assist with desktop support via ZenDesk (tickets, troubleshooting, user requests) to ensure smooth day-to-day operations
* Assist in maintaining security standards aligned with PCI-DSS and ISO27001 requirements
Requirements
* Strong knowledge of networks, including LAN/Wi-Fi, TCP/IP, DNS, DHCP, VLANs, routing and VPNs
* Practical experience managing firewalls: rule management, NAT and segmentation
* Excellent hardware, technical trouble shooting and support knowledge – Laptops (Windows and Apple), Desktops and Servers, Firewalls, Load balancers, Switches, NAS backups etc
* Strong switching experience: VLANs, routing, uplinks and redundancy
* Strong Windows Server administration experience (2019/2022)
* Experience supporting Microsoft 365 and Intune device management
* Experience supporting on-prem server environments and data centre operations
* Strong troubleshooting skills across networking, infrastructure platforms and endpoint environments
* Experience supporting backups, restores and retention processes
* Confident working with server hardware, networking components and infrastructure services
* Excellent communication skills (technical and non-technical stakeholders)
* Strong attention to detail, ownership mindset and ability to work autonomously
* Comfortable working in a high-change environment with evolving / incomplete processes
* Proactive approach to documentation, continuous improvement and automation
Preferred Qualifications
* Advanced MS Excel (complex formulas, PowerPivot, VBA)
* Python experience for data wrangling and automation
* Worked with various cloud technologies
* Experience with BI tools (Power BI,Tableau)
* Familiarity with AWS governance frameworks and compliance standards
* Domain expertise in retail, banking, CRM, loyalty programs, or digital marketing
* Degree in a quantitative field (Computer Science, Engineering, Mathematics, etc.)
The Benefits
* Ability to buy and sell holiday days as well as the ability to bank days (tenure dependent)
* Flexible working options: we are operating a hybrid working model with 3 days a week from the office
* Pension: Hargreaves Lansdown – 6% matched contribution
* Generous family friendly cover
* Income protection
* Critical illness cover
* Life insurance cover
* Optical cover
* Yulife app for access to employee wellbeing and discounts
* Perks at Work, cashback/discount shopping site
* Salary sacrifice program which includes cycle to work scheme, electric car scheme and season ticket loans
* Company events i.e. Christmas party, all-company event and other social/hosted events during the year (we have an active social committee!)
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