CDW

Sr System Eng II Infra & App

4 December 2025
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Deadline date:
£100000 - £50000 / year

Job Description

At CDW, we make it happen, together. Trust, connection, and commitment are at the heart of how we work together to deliver for our customers. It’s why we’re coworkers, not just employees.

Coworkers who genuinely believe in supporting our customers and one another. We collectively forge our path forward with a level of commitment that speaks to who we are and where we’re headed. We’re proud to share our story and Make Amazing Happen at CDW. Job Summary The Sr.

Systems Engineer is a pivotal technical role responsible for the design, implementation, management, and support of hybrid-cloud infrastructure platforms. This Engineering professional will be responsible for leading infrastructure projects to completion, optimizing internal processes with automation tools, and driving towards security outcomes related to patch management and hybrid-cloud platform design.

An ideal candidate will have hands-on experience with enterprise-class patch management technologies like Ivanti, Automox, or NinjaOne. This individual will lead Automation and Patch Management initiatives related to Active Directory, Entra ID, SSO, Windows Servers, Linux Servers, and PKI. A strong scripting & orchestration background, in-depth OS knowledge (Windows/Linux), and familiarity with ServiceNow are preferred.

What you will do: Key Responsibilities: Patch Management: Strong proficiency with patch management technologies like Ivanti, Automox, or NinjaOne is a key requirement. Familiarity with growing vulnerability landscapes, attack vectors, threat modeling, incident response, and security frameworks as they relate to APIs, Operating Systems, hypervisors, and network appliances. Lead the design, implementation, and administration of OS deployment (OSD), image hardening, 3rd party software distribution, patch compliance, and reporting.

Knowledge of enterprise-class errata lifecycle technologies like Red Hat Satellite, MECM, or SUSE Manager is a plus. Security & Compliance: Manage hybrid-cloud Public Key Infrastructure (PKI), manage and create certificate templates, control certificate inventory, and automate the certificate lifecycle across a diverse ecosystem.

Hands-on management of certificate management tools (Venafi TPP & ZTPKI, Sectigo, and Entra PKI). In-depth knowledge of Enterprise CA and certificate management concepts required. Identity and Access Management: Serve as a subject matter expert for Active Directory and Entra ID, including authentication and authorization concepts.

Single Sign-On solutions using Entra ID with a focus on automation. Manage Azure App Registrations, Service Principals, Managed Identities, and Client Secrets. Knowledge of Conditional Access policies.

Automation & Orchestration: Automate administrative tasks and integrate systems using orchestration tools and scripts written in PowerShell, Python, and Microsoft Graph API, etc. In-depth knowledge of Ansible Automation Platform, Terraform, and playbooks for advanced automation workflows, and related endpoint and server management concepts. Automation and deployment of virtual servers on-premises and in the cloud to include Windows and Linux with a focus on the Azure hyperscalers and hypervisors.

Knowledge of git, GitHub, and Azure DevOps for playbook and runbook development. Knowledge of the System Center Suite a plus. Infrastructure Management: Extensive knowledge of Windows Server, RHEL, Ubuntu, and containers, including administration, patching, and general troubleshooting.


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