> Markdown version of [/jobs/ext/3020365-senior-it-engineer](https://www.wearedevelopers.com/jobs/ext/3020365-senior-it-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior IT Engineer - **Company:** Officecompany Descriptionads - **Location:** Orpington, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Cyber Security, Disaster Recovery, Domainkeys Identified Mail, Domain-Based Message Authentication Reporting and Conformance (DMARC), VMware ESX Servers, Information Technology Operations, Windows Servers, Network Configuration and Change Management, Azure Active Directory, Computer Network Technologies, Microsoft InTune, Sender Policy Framework (SPF), Information Technology, Cloudflare, Cisco - **Published:** September 21, 2026 - **Apply:** https://www.apply4u.co.uk/jobs/senior-it-engineer/47735552 ## About the Role Policy, Microsoft 365, Entra ID and Intune, together with a solid understanding of Windows Server, VMware ESXi, network configuration and Cisco switching. Experience of mobile device management, including Apple devices, and email security technologies such as Mimecast, SPF, DKIM and DMARC will also be important.You will have a practical understanding of information security principles and frameworks, including Cyber Essentials and ISO 27001, and will be comfortable ensuring that security and governance requirements are built into technical solutions from the outset. Knowledge of public DNS management, Cloudflare, network technologies and data circuits would be beneficial.This role would suit someone who is comfortable working independently, balancing strategic infrastructure projects with day-to-day operational demands and acting as a point of technical escalation. Strong communication and stakeholder-management skills are essential, including the ability to explain complex technical issues clearly to non-technical colleagues and work effectively with third-party suppliers.The Contract & BenefitsContract Type; Permanent, full-time roleLocation; Farnborough, Hampshire, with occasional travel to the London officeCompany DescriptionADS represents and supports around 2,000 UK businesses operating in the aerospace, defence, security and space sectors. Whether representing industry, connecting our members with business opportunities or driving forward innovation and growth, ADS is at the forefront of an array of activities, events and programmes that benefit our members.Our membership ranges from major multinational businesses with substantial UK presences to hundreds of small and medium-sized companies in every part of the country. We are an organisation that aims to deliver to the highest standards and have successfully achieved accreditation to the ISO 27001:2022 Standard and Cyber Essentials Plus #J-18808-Ljbffr ## Description improvements.Alongside the migration programme, the Senior IT Engineer will support business-as-usual IT operations, contribute to disaster recovery planning and help maintain the technical controls required for Cyber Essentials Plus and ISO 27001. Security, documentation and knowledge-sharing will be central to the role, ensuring that systems are supported effectively and knowledge is embedded across the wider IT team.The role is based in Farnborough and will involve occasional travel to the London office and potentially the Toulouse office to support infrastructure projects and changes.The PersonWe are seeking an experienced infrastructure professional with demonstrable experience of designing and delivering an on-premise Active Directory to Microsoft Entra migration, ideally through the full project lifecycle rather than solely through the administration of an established Entra environment.The successful candidate will have strong technical experience across Active Directory, Group