Apply to the vacancy...
Unfortunately, something went wrong while opening the page. Please try again.

Loading window...

Apply to the vacancy...
Unfortunately, something went wrong while opening the page. Please try again.

Loading window...

Sign up for Jobbird
An error occurred while opening the sign-up page. Please try again.

Loading window...

Forgot my password
Unfortunately, something went wrong while opening the page. Please try again.

Loading window...

Log out
Unfortunately, something went wrong while signing out. Please try again.

Loading window...

Job application sent
Something went wrong while logging in. Please try again.
Something went wrong while signing up. Please try again.

Loading window...

logo
  • 5 km
  • 10 km
  • 30 km
  • 50 km

  • All
  • 5 km
  • 10 km
  • 30 km
  • 50 km

  • All
Filters
Filters
Location and distance
  • 5 km
  • 10 km
  • 30 km
  • 50 km

  • All
Jobs posted from
Salary from (per month)
Filters
How our sorting works

The order in which job vacancies are displayed is determined by a composite score based on the following factors:

  • Keyword Relevance: How well your search terms match the vacancy details. We prioritize matches found in the job title, followed by job requirements, location names, and educational levels. Matches within general employer information or the organization's name carry a lower weight.
  • Commercial Prioritization (Premium Jobs): Vacancies paid for by employers ('Premium' or 'Sponsored') receive a ranking boost and will appear higher in the search results.
  • Recency (Date Relevance): Newer vacancies are prioritized. The relevance score of a vacancy is reduced by half once the posting is older than 30 days.
  • Proximity (Distance Relevance): Vacancies located closer to your search location are ranked higher. For vacancies located more than 30 km from the search center, the relevance score is halved.
The final ranking is established by multiplying all these individual factors to calculate the total relevance score.

O\'Neill & Brennan Construction Limited

2/3 Line Support Engineer

O'Neill & Brennan Construction Limited Potters Bar
35,000 to 40,000
32 - 40 hour


Show Recently closed jobs

    O\'Neill & Brennan Construction Limited

    2/3 Line Support Engineer

    O'Neill & Brennan Construction Limited Potters Bar
    35,000 to 40,000
    32 - 40 hour
    Status Open
    Apply now

    Apply on the employer's website


    What we ask

    Education

    No minimum education required

    What we offer

    Salary
    £35,000 to £40,000
    Hours
    32 to 40 hours per week
    Employment type
    permanent

    Job description

    O'NEILL & BRENNAN

    Infrastructure Engineer

    2nd/3rd Line Infrastructure Engineer | IT Department | Full-Time

    Reports to: Head of IT Operations

    The Position

    The Infrastructure Engineer will provide effective IT and infrastructure support across all aspects of the business, locally and throughout all regional offices. The role is responsible for managing the IT Helpdesk team, ensuring calls and tickets are logged and resolved in a timely manner, while also taking ownership of the company's Microsoft Server, Desktop, Microsoft 365, Azure cloud, networking, and endpoint management environments. The role works closely with the Developers, Azure Architects, and Network Architects to support and evolve the organisation's infrastructure, and provides exposure to a wide range of infrastructure, networking, and cloud projects.

    This role reports directly to the Head of IT Operations.

    Duties / Areas of Responsibility

    The position will involve the following areas of responsibility:

    Managing and mentoring the IT Helpdesk team, ensuring calls are answered and tickets are logged and resolved in a timely manner
    Diagnosing and resolving technical issues remotely and on site
    Undertaking small- to medium-sized IT and infrastructure projects as instructed by management
    Providing desktop and server support
    Supporting and maintaining Microsoft Server / Desktop operating systems, Microsoft 365, and Azure environments
    Setting up and configuring new laptops, desktops and mobile phones (Android and iOS)
    Installing and maintaining authorised software
    Reporting faults and maintaining logs on servers, desktops and laptops
    Completing internal user desk moves
    Ensuring all logs for equipment and users are maintained
    Making and logging purchases for IT equipment
    Ensuring licensing for all software purchased is recorded and maintained
    Active Directory, Microsoft Entra ID (Azure AD) and Microsoft 365 user maintenance, including Single Sign-On (SSO) and Conditional Access policy administration
    Responsible for managing Azure Backups / Recovery Services Vault configurations
    Managing disaster recovery and business continuity using Azure Site Recovery, including replication, failover, reprotect and failback of critical infrastructure
    Administering Microsoft Purview for data governance and compliance, and Microsoft Defender for endpoint and identity protection
    Managing endpoint devices via Microsoft Intune, including device enrollment, configuration and compliance policies
    Writing and maintaining PowerShell scripts to automate routine administrative and operational tasks
    Preparing documentation and user guides
    Performing basic administrative support duties, as required, to meet specific operational objectives
    Ensuring that a high level of customer service and support is provided to all internal and external staff
    Supporting custom internal applications
    Working alongside Developers, Azure Architects, and Network Architects on infrastructure and networking design and delivery

    Skills and Experience

    The ideal candidate will have a high level of customer service experience and Microsoft certifications. A minimum of 2 years of experience supporting Windows Desktops and Servers is required, along with all the expected qualities of an experienced Infrastructure / Support engineer.

    Essential skills

    Active Directory management – Users and Computers, Group Policy, Network Printers, Shares, etc.
    Microsoft Entra ID (Azure AD), including SSO and Conditional Access configuration
    Microsoft Purview for data governance and compliance
    Microsoft Defender (endpoint and identity protection)
    Azure Site Recovery and Recovery Services Vault – replication, failover, reprotect, and failback
    PowerShell scripting for automation of administrative and operational tasks
    Windows 10 / 11 administration
    Windows Server administration, version 2016 to 2025
    Office 365 / Microsoft 365 user and mailbox administration

    Cloud & infrastructure experience (Microsoft Azure)

    Azure Virtual Machine deployment, administration, and troubleshooting (boot diagnostics, serial console, run command, redeploy)
    Azure Virtual Desktop and FSLogix
    SQL Server administration on Azure VMs, including SSMS
    Exchange Hybrid configuration and troubleshooting
    Microsoft Teams voice administration, including Operator Connect

    Networking

    General network administration and troubleshooting – TCP/IP and WAN / LAN / Wi-Fi
    Azure Virtual Networks, subnets, VNet peering, and hub-and-spoke network design
    VPN Gateway configuration (Point-to-Site and Site-to-Site) and route troubleshooting
    Network Security Groups (NSGs) – inbound/outbound rule design and troubleshooting
    Knowledge of Cisco Unified Communications Manager (Cisco Unify / Cisco UC) – call routing, telephony administration, and troubleshooting
    Familiarity with switching, routing and Wi-Fi infrastructure in a business environment

    Desirable skills

    Experience maintaining a helpdesk ticketing system (preferably ServiceDesk Plus)
    Incident Management skills, with the ability to identify root cause and apply solutions to resolve
    Problem Management skills, able to investigate trends and apply a methodical approach to identify root cause and possible solutions
    Proven experience working within IT service delivery
    Troubleshooting and problem-solving skills
    Ability to transfer knowledge within the team or to end users
    Experience with mobile device management (MDM) solutions (Meraki, SOTI)
    Microsoft Intune – device configuration profiles, compliance policies and app deployment
    Endpoint management across Windows, macOS, iOS and Android devices
    Device enrollment (Windows Autopilot, Apple Business Manager / Automated Device Enrollment, Android Enterprise zero-touch)
    Mobile Application Management (MAM) and app protection policies
    Microsoft Defender for Endpoint policy management via Intune

    Good to know

    Barracuda email filtering
    Team & Reporting Structure

    The successful candidate will manage the IT Helpdesk team and work closely alongside the Developers, Azure Architects, and Network Architects.

    This role reports to the Head of IT Operations
    Salary description

    £35000.00 - £40000.00 per year

    Apply now

    Apply on the employer's website

    Apply now

    Apply on the employer's website


    Vacancy actions

    Save as favorite
    Share vacancy
    Or apply later


    Potters Bar England

    Jobs

    • Search for jobs
    • Jobs per location
    • Jobs per job profession
    • Jobs per employment
    • Jobs per educational attainment

    Jobbird

    • Switch to different region
    • Terms and Conditions
    © 2026 Jobbird