cover image
Aventum Group

Senior Information Technology Support Engineer

On site

London, United kingdom

Senior

Freelance

06-01-2026

Share this job:

Skills

Leadership Firewalls Microsoft 365 Zendesk Networking Windows Azure Team Leadership Active Directory

Job Specifications

Who We Are

Since its inception, Aventum Group has sought a different approach to insurance. We are on a mission to be the ‘most inspiring specialty (re)insurance group in the world’.

At the heart of Aventum are our people. Working together in dynamic, service-focused teams, we prioritise our customers in everything we do. Collaboration fuels our success, courage drives our innovation and continuous improvement keeps us ahead in a rapidly evolving industry. Our shared commitment is to revolutionise insurance for the better, one day at a time.

We also believe that investing in our people is investing in our future. By empowering people across the Group to develop their careers, advance within the Group, and embrace new challenges, we build an environment where growth and learning never stop.

Our competitive benefits package, offered via a flexible benefits platform, reflects this. Beyond core benefits, employees have the freedom to tailor their benefits to meet their individual needs, supporting their unique goals and ambitions.

Role Summary

Due to our continued growth, we are looking for a Senior IT Support Engineer to join the Aventum Group based on a 12 month fixed-term-contract.

This role is part of the IT Service Desk team, where the primary responsibility is to support and manage the IT Helpdesk for Aventum Group and its associated entities.

We are looking for a talented individual with a positive attitude and a willingness to learn. This person should be eager to continue their personal development while ensuring the needs of the business are met and expectations are exceeded.

The role involves providing support in all aspects of IT across the group. Helpdesk tickets are submitted via email to our Zendesk system and need to be resolved in accordance with our SLA's.

Role Accountabilities

Service Desk & End-User Support

Act as the primary escalation point for complex issues, resolving technical challenges and ensuring SLA targets (99%+) are consistently met.
Complete ongoing Joiners, Movers, and Leavers (JML) process, ensuring accuracy, compliance, and timely execution.
Provide end-user support for IT applications, with a particular focus on insurance policy administration systems and core business platforms.
Collaborate with the wider IT team on business projects, system implementations, and infrastructure upgrades.
liaise with vendor support to resolved end-user issues, ensuring SLAs are met.
Document and streamline IT policies, processes, and knowledge bases to support operational efficiency.
Identify opportunities to automate routine tasks, reduce duplication, and improve service delivery.

Systems Administration & Operations

Administer and maintain Microsoft 365, Azure Active Directory, Exchange Online, Teams, and other cloud-based platforms.
Support and configure IT hardware and infrastructure, including laptops, mobile devices, printers, scanners, routers, and switches.
Run and monitor scheduled IT operational processes, including system backups, patch management, and endpoint protection.
Maintain accurate hardware/software inventories, oversee asset management, and ensure licensing compliance.
Ensure IT systems, meeting room technology, and critical business equipment in the London office are operational each day.

Insurance Sector Applications & Policy Admin Systems

Provide specialist support and administration for insurance policy administration systems such as Sequel, Applied Epic or equivalent platforms, ensuring seamless operation and integration with other business applications.
Liaise with underwriters, claims teams, and brokers to resolve IT-related issues impacting insurance operations.
Support upgrades, patching, and vendor management of insurance software platforms.
Assist with data quality, reporting, and system access requests to meet business and compliance needs.

Networks, Security & Compliance

Support domain, network, VPN, and firewall administration, ensuring high availability and security.
Enforce IT security standards, including MFA, endpoint management, and vulnerability remediation.
Contribute to disaster recovery and business continuity planning, including testing and validation of backups.

Role Requirements

Proven experience as a Senior IT Support Engineer or equivalent role, ideally with exposure to IT team leadership.
Strong technical background across:
Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, Azure Active Directory)
Windows 10/11, Active Directory, Group Policy, and Office applications
Hardware support (laptops, desktops, mobile devices, printers, scanners, networking equipment)
Networking fundamentals (LAN/WAN, VPNs, firewalls, routers, switches)
Demonstrated experience supporting insurance systems, particularly policy administration platforms and related business applications (claims, underwriting, broking, etc.).
Knowledge of ITIL processes (Incident, Request, Change, Problem Management) with experience managing SLAs and escalations

About the Company

We are a global (re)insurance group that operates across both the underwriting and broking sectors. Our success has been born from always looking to make insurance better. We make, nurture and grow relationships. We design, develop and launch unparalleled specialist schemes and facilities. And we never accept the standard ways of doing things if we think we can make them better. We currently have a presence in 17 offices located around the world, from which we control around $1.8bn GWP. At Aventum, our people make (re)insura... Know more