IT Operations Engineer

Oscar; Doncaster; On-site; GBP 49,000 - 89,000; Full time

Job summary

Oscar in Leeds / Doncaster is seeking a senior Operations Engineer to own core infrastructure, cloud platforms and business-critical services, with a strong focus on Microsoft cloud technologies, optimisation and automation.

You will work across cloud and on-premise environments, lead incidents and projects, support Microsoft 365/Azure, and produce detailed technical documentation for ongoing improvements.

Qualifications

• Strong experience across Microsoft cloud and infrastructure technologies (Azure, Microsoft 365 / E5, Active Directory, Entra ID).
• Experience with SharePoint and OneDrive, MFA, DLP, and identity management.
• Experience across SaaS and IaaS, device and mobility management, Windows Server and Windows OS.

Responsibilities

• Maintain performance, availability and security of core systems and services.
• Own incidents and problems across cloud and on-premise infra; support changes and new services.
• Support and manage Microsoft 365 and Azure environments.

Skills

Infrastructure management

Security best practices

Technical leadership

Tools

Azure

Active Directory

Microsoft 365

Entra ID

SharePoint

OneDrive

VMware

Terraform

Ansible

PowerShell

Python

JavaScript

Git

SQL

PostgreSQL

Oracle

CI/CD

SASE

Job description

Salary: £49,000 - 89,000 per year

Requirements

• We are looking for someone with strong experience across Microsoft cloud and infrastructure technologies, including Azure, Microsoft 365 / E5 environments, Active Directory and Microsoft Entra ID.
• Experience with SharePoint and OneDrive, Multi-Factor Authentication, DLP and identity management is required.
• Experience across SaaS and IaaS environments, device and mobility management, Windows Server and Windows operating systems is required.
• Experience with VMware and enterprise storage, VPN, SASE and cloud security technologies, and SIEM/security monitoring platforms is required.
• Experience with scripting and automation using PowerShell, Python, JavaScript or equivalent scripting languages is required.
• Experience with Terraform, Ansible, Chef or Puppet is required.
• Knowledge or experience across CI/CD pipelines, Git repositories and relational databases such as SQL, PostgreSQL or Oracle would be advantageous.
• Relevant Microsoft certifications would be beneficial, including Microsoft 365 Administrator, Windows Server Hybrid Administrator Associate, Azure Administrator Associate, and Endpoint Administrator Associate.
• Equivalent commercial experience will also be considered.

Responsibilities

• We are responsible for maintaining the performance, availability and security of core systems and services.
• We work across cloud and on-premise infrastructure, owning complex incidents and problems through to resolution while supporting technical change, projects and the introduction of new services.
• We support and manage Microsoft 365 and Azure environments.
• We act as a technical escalation point for Service Desk and Desktop Support teams.
• We investigate, diagnose and resolve complex infrastructure and systems issues.
• We manage and maintain core systems, applications, hardware and cloud platforms.
• We monitor infrastructure performance, availability and capacity.
• We identify recurring technical problems and implement preventative solutions.
• We deliver system changes in line with established change control processes.
• We support backup, disaster recovery and restoration procedures.
• We contribute to infrastructure and cloud projects, owning assigned technical deliverables.
• We produce detailed technical documentation, solution designs and support procedures.
• We automate operational processes, provisioning and reporting through scripting and orchestration.
• We support security, vulnerability management and technical risk assessments.
• We work with third-party technology providers to resolve escalated technical issues.

Technologies

• Active Directory
• Ansible
• Azure
• CI/CD
• Cloud
• Git
• Hardware
• IaaS
• Support
• JavaScript
• Microsoft 365
• Oracle
• PostgreSQL
• PowerShell
• Puppet
• Python
• SQL
• Security
• SharePoint
• Terraform
• VPN
• VMware
• Windows
• Office 365
• Cisco
• DevOps

More

We are a growing IT Operations function based in Leeds / Doncaster, with 3 days on site, offering a salary of 45,000. This is a senior technical operations role for an experienced Operations Engineer who will take ownership of core infrastructure, cloud platforms and business-critical services. We offer the opportunity to work across Microsoft cloud technologies, infrastructure and systems support, with a strong focus on optimisation, automation and continuous improvement of our technology environment.

last updated 36 week of 2026