Role Overview:
We are seeking a Senior Infrastructure Consultant to provide senior-level consultancy, operational support, and technical leadership across complex customer environments. The role will span on-premises, hybrid, and cloud technologies, including Exchange, Microsoft 365, Azure, Windows Server, Citrix, virtualisation, backup, networking, monitoring, and security. The successful candidate will act as a senior technical escalation point, lead technical discovery and solution delivery, maintain high-quality documentation, and drive service reliability and continuous improvement. Due to the nature of the customer environments supported, candidates must be eligible to obtain UK Security Check (SC) clearance.
- Provide senior consultancy and infrastructure support across multiple managed service customers and technologies.
- Act as a technical escalation point for Microsoft Exchange, Exchange Online, Citrix, Windows Server, identity, virtualisation, networking, backup, monitoring, and cloud-related incidents and service requests.
- Support, administer, troubleshoot, and improve Microsoft Exchange Server, hybrid Exchange, Exchange Online, migrations, mail flow, security, availability, and disaster recovery.
- Support and optimise Citrix environments, including Virtual Apps and Desktops, StoreFront, Delivery Controllers, Citrix Gateway or ADC, profile management, application delivery, and associated infrastructure.
- Work with customers and internal teams to gather requirements, complete technical discovery, produce solution designs, implement changes, and deliver service improvements.
- Support hybrid and on-premises environments including VMware, Hyper-V, Windows Server, Active Directory, DNS, DHCP, Microsoft 365, Azure, backup, storage, and network services.
- Plan and deliver infrastructure upgrades, migrations, patching, lifecycle activities, resilience improvements, and remediation work with appropriate testing and rollback arrangements.
- Maintain technical designs, operational documentation, runbooks, support procedures, asset information, and knowledge articles.
- Operate within structured ITIL and ISO 20000 service management processes, including incident, problem, change, request, and configuration management.
- Mentor engineers, share knowledge, and provide clear customer-facing updates on incidents, changes, risks, recommendations, and delivery progress.
- Follow customer security requirements and support work in environments requiring UK Security Check clearance.
- 7+ years’ experience in enterprise infrastructure consultancy, engineering, managed services, or technical operations.
- Strong hands-on knowledge of Microsoft Exchange Server and Exchange Online, including hybrid configuration, migrations, mail flow, security, high availability, and troubleshooting.
- Strong hands-on knowledge of Citrix technologies in enterprise environments, ideally including Citrix Virtual Apps and Desktops, StoreFront, Delivery Controllers, Citrix Gateway or ADC, and profile management.
- Broad experience supporting on-premises and hybrid infrastructure, including Windows Server, Active Directory, Group Policy, DNS, DHCP, VMware or Hyper-V, storage, backup, and networking.
- Practical experience with Microsoft 365 and Azure services, with the ability to support integration between cloud and on-premises platforms.
- Proven ability to analyse and resolve complex issues across messaging, end-user computing, identity, server, virtualisation, networking, monitoring, and security domains.
- Experience leading technical discovery, producing designs and implementation plans, assessing risks and dependencies, and delivering controlled infrastructure changes.
- Strong understanding of ITIL practices and experience working within a controlled managed service or enterprise environment.
- Strong customer-facing communication, stakeholder management, technical documentation, and knowledge-transfer skills.
- Ability to work independently, prioritise competing demands, manage escalations, and support multiple customer environments concurrently.
- Mandatory: Eligible to obtain and maintain UK Security Check (SC) clearance. Appointment and assignment to relevant customer work may be subject to successful vetting.
- Relevant Microsoft, Citrix, VMware, ITIL, security, or cloud certifications are desirable.
Technical Skills
- Microsoft Exchange Server and Exchange Online: architecture, administration, cumulative updates, hybrid configuration, mail flow, connectors, transport rules, certificates, public folders, high availability, backup, recovery, migrations, and troubleshooting.
- Citrix Virtual Apps and Desktops: Delivery Controllers, StoreFront, Machine Creation Services or Provisioning Services, Citrix Gateway or ADC, policies, profiles, image management, application publishing, monitoring, and troubleshooting.
- Windows Server administration, Active Directory, Group Policy, DNS, DHCP, file and print services, patching, clustering, certificate services, and PowerShell.
- Microsoft 365 services, including Exchange Online, Entra ID, identity synchronisation, conditional access, multifactor authentication, role-based access control, and security and compliance features.
- Microsoft Azure infrastructure, including virtual machines, storage, virtual networks, network security groups, VPN connectivity, monitoring, backup, recovery, and security controls.
- Virtualisation and data-centre technologies including VMware vSphere or Hyper-V, server hardware, storage, backup and recovery, disaster recovery, and capacity management.
- Enterprise networking fundamentals, including TCP/IP, routing, VLANs, load balancing, firewalls, proxies, VPNs, DNS, and troubleshooting connectivity across hybrid environments.
- Automation, scripting, monitoring, and logging using PowerShell and tools such as Azure Monitor, Citrix Director, Splunk, Opsview, New Relic, or equivalent platforms.
- Security-focused infrastructure operations, including vulnerability remediation, privileged access, hardening, certificate management, backup validation, audit evidence, and operational risk management.
Why Version 1?
At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability.
- Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits
- Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme
- Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance
- Financial Wellbeing initiatives including; Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme
- Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave and special leave policies
- Educational assistance, incentivised certifications, and accreditations, including AWS, Microsoft, Oracle, and Red Hat
- Reward schemes including Version 1’s Annual Excellence Awards & ‘Call-Out’ platform.
- Environment, Social and Community First initiatives allow you to get involved in local fundraising and development opportunities as part of fostering our diversity, inclusion and belonging schemes.
And many more exciting benefits… drop us a note to find out more.
Version 1 is an equal opportunities employer.
We are committed to building a diverse, inclusive and respectful workplace where everyone feels valued and able to thrive. We welcome applications from people of all backgrounds, identities and lived experiences, and we value the different perspectives people bring including those shaped by disability and neurodiversity.
We want every candidate to have a positive and accessible recruitment experience. If you need reasonable adjustments at any stage of the process, please contact your recruiter ekta.bahl@version1.com at Version 1. We will consider all requests carefully, respectfully and confidentially.
Video links: https://www.youtube.com/watch?v=F_d3ELTH5zo