Senior Infrastructure Consultant

SmartRecruiters, Inc.; Greater London; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Profit share scheme

Career development programs

Flexible/remote working

Job summary

Version 1 is seeking a Senior Infrastructure Consultant to provide senior-level consultancy, operational support, and technical leadership across complex customer environments. The role spans on-premises, hybrid, and cloud technologies including Exchange, Microsoft 365, Azure, Windows Server, Citrix, and security.

UK SC clearance is required. The successful candidate will act as a senior escalation point, lead technical discovery and solution delivery, maintain documentation, and drive service

Qualifications

• 7+ years of 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.

Responsibilities

• 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.

Skills

Microsoft Exchange Server

Exchange Online

Citrix

Windows Server

Active Directory

Azure

VMware

ITIL

Security Clearance

PowerShell

Networking

Tools

Azure Monitor

Citrix Director

Splunk

Opsview

New Relic

Job description

Version 1 has celebrated30 yearsinbusinessand continues to be trusted by global brands to delivertechnology and transformationsolutions that drive customer success. Ourdeepexpertiseenables our customers to navigate the rapidlyevolving technology landscape. We foster strong partnerships withglobal technology leadersincluding Microsoft, AWS, Oracle, Red Hat,OutSystems, Snowflake, ensuring that our customers are provided with the highest quality solutions and services.

We’rean award-winning employer reflecting how our employees are at the very heartof whatwe do:

• 10+ years as a Great Place to Work in Ireland & UK
• Best Workplace for Women in the UK & Ireland by GPTW
• Best Workplace for Wellbeing in the UK by GPTW

We’rea corevalues drivencompany, we hire people who share our values, and we reward those who display and foster them,it’sdeeply embedded within our DNA. Invest in us andwe’llinvest in you!.

Job Description

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.

Qualifications

• 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.

Additional Information

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 collectivelybenefitfrom 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 initiativesincluding;Pension, Private Healthcare Cover, Life Assurance, Financialadviceand 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
• Educationalassistance, 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.

Version1 is an equal opportunities employer.

We are committed to building a diverse,inclusiveand 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 [e-mail] at Version 1. We will consider all requests carefully,respectfullyand confidentially.

By clicking the link above or any third‑party link within this posting, you are leaving this site and going to a third‑party website where the third‑party website's terms and privacy policy apply