Senior IT Infrastructure and Support Engineer

Chess Dynamics; Horsham; Hybrid; GBP 45,000 - GBP 60,000; Full time

Job summary

A technology company in Horsham is seeking a Senior IT Infrastructure & Support Engineer to ensure the reliability and security of IT systems. You will maintain core infrastructure, provide advanced support, and contribute to team development. Ideal candidates must have strong experience with Windows Server, Active Directory, and cloud platforms. This role includes a hybrid work option and excellent professional development opportunities, along with benefits like group pension plans and wellbeing initiatives.

Benefits

28 days annual leave

Group pension plan

Employee Assistance Programme

Life assurance policy

Wellbeing initiatives

Excellent learning & development opportunities

Free onsite car parking

Qualifications

• Strong experience with Windows Server environments and Active Directory.
• Excellent understanding of Azure AD and Exchange Online.
• Familiarity with security tools and network fundamentals.
• Experience in supporting ERP systems and collaboration tools.

Responsibilities

• Provide high-level technical support and troubleshoot complex IT issues.
• Maintain and support systems such as Active Directory, Azure, and Exchange 365.
• Contribute to IT security and stability through support of cybersecurity tools.
• Act as a mentor and document best practices to build team knowledge.

Skills

Windows Server environments

Active Directory

Azure AD and cloud identity

Hyper-V

Security tools

Network fundamentals

Jira

ERP systems (Epicor)

Tools

Veeam

ManageEngine

Confluence

Job description

Role Purpose

The Senior IT Infrastructure & Support Engineer ensures the reliability, security, and efficiency of the organisation’s IT systems. The role exists to maintain and develop core infrastructure, provide advanced technical support, and contribute to the resilience of business-critical systems, including ERP and cybersecurity tools. In addition, the role plays a key part in strengthening the IT team’s capability by sharing expertise and supporting the professional growth of colleagues.

Key Responsibilities

• Provide high-level technical support across the business, including troubleshooting complex issues with infrastructure, applications, and user devices.
• Maintain and support key systems such as Active Directory, Azure, Exchange 365, virtualised environments (Hyper-V), and backup solutions.
• Contribute to the security and stability of the organisation’s IT estate by supporting cybersecurity tools and policies.
• Collaborate with the wider IT team on system improvements, deployments, and technical projects.
• Proactively identify areas for automation, standardisation, or process improvement within IT operations.
• Act as a technical mentor to junior team members, providing guidance, informal training, and support with their development goals.
• Document solutions, processes, and best practices to build team knowledge and reduce single points of failure.
• Participate in disaster recovery planning, testing, and service continuity initiatives.

Skills & Experience

• Strong experience with Windows Server environments, including Active Directory, Group Policy, DNS/DHCP, and file/print services.
• Excellent understanding of Azure AD, Exchange Online, Office 365, and cloud identity concepts.
• Working knowledge of Hyper-V, Veeam, WSUS, certificate services, and endpoint management tools (e.g. ManageEngine).
• Familiarity with security tools and concepts, such as endpoint protection, email filtering, SIEM/monitoring, or extended AV tools.
• Understanding of network fundamentals (TCP/IP, VLANs, firewalls) and general troubleshooting.
• Experience using collaboration and tracking tools like Jira and Confluence.
• Experience with ERP systems (Epicor ideal), including maintaining, supporting day-to-day user support and system admin functions.

Personal Attributes

• Strong technical problem-solving ability and a desire to continuously improve IT systems and support.
• Clear and confident communication with both technical and non-technical audiences.
• Proactive, organised, and capable of managing own workload while supporting others.
• Willingness to share knowledge and coach others without formal line management responsibilities.
• Committed to high standards of IT service delivery and information security.
• Demonstrates our company values of Teamwork, Integrity, Excellence and Courage.
• Highly organised and methodical approach, with an eye for detail.
• The ability to work independently when required.
• A flexible, conscientious, and diligent attitude.
• Excellent communication, interpersonal and written skills.
• A resilient and adaptable approach.

Work life balance

• Provide regular out-of-hours support for planned maintenance or critical issues.
• Lunchtime finishes on a Friday
• Hybrid / flexible working arrangements
• 28 days annual leave
• Christmas closure
• Group pension plan – matched contributions up to 5%
• Employee Assistance Programme gives you and your family access to 4 key services including remote GP service, second opinion, mental health pathway service and physiotherapy consultations
• Life assurance policy, including bereavement counselling and probate helpline
• Company shares incentive plan and save as you earn scheme
• Electric vehicle salary sacrifice scheme
• Wellbeing initiatives, including access to wellbeing app and the additionof mental health support for all employees. Plus, regular activities across our sites to support and promote wellbeing
• Regular sports and social activities
• Reward platform (high street discounts, employee benefits, health, and wellbeing offerings).
• Excellent learning & development opportunities
• Great working environment with free, onsite car parking across all our locations

Security Clearance Requirements

Due to the nature of our business, our staff need to be able to obtain UK Security Clearance as a mandated requirement. Therefore, if successful, you will need to provide proof of identity, employment history and right to work in the UK, along with proof of UK residency for at least five years.