Senior Systems Engineer

Company: ECI
Apply for the Senior Systems Engineer
Location: Greater London
Job Description:

The Opportunity:

As a Senior Systems Engineer, you will play a key role in our technical delivery team to drive the technology programs, including Cloud implementation and support, desktop engineering escalation and networking for a defined portfolio of clients. Using latest and greatest technologies and solutions, you will support our client’s innovation by following a set of standards and best practices in a rapidly evolving technology landscape.

What you will do:

  • Provide advanced support of cloud infrastructures such as Microsoft 365/Azure (Azure AD, Exchange Online, SharePoint Online, OneDrive for Business, Teams, Intune)
  • Collaborate with, and act as a tier 3 escalation point for Client Technology Management, Service Desk, Engineering, and other client support teams
  • Implement and manage enterprise mail platform and security systems such as Microsoft Exchange or Exchange Online
  • Act as a Technical Lead for migrations, implementations, relocations, etc
  • Take ownership of complex technical challenges and provide long term fixes based on root cause analysis
  • Document processes and procedures which explain system functionality or regular tasks to contribute to our internal knowledge base including architecture diagrams, runbooks, and standard operating procedures (SOP)
  • Audit undocumented client environments and provide technical recommendations based on findings
  • Apply best‑practice configurations to client security platforms such as Azure Active Directory Conditional Access, DUO Multifactor Authentication (MFA) services
  • Perform system maintenance tasks including software and operating system patching, software version upgrades, critical patch applications, and vulnerability remediation
  • Provide advanced support of Active Directory such as Domain Controller upgrades, Group Policy creation, scheduled software deployments, network policy maintenance, and certificate management
  • Interface with common technology support tools such as Remote Monitoring and Management (RMM), Mobile Device/Mobile Application Management, Anti‑Virus/Anti‑Malware

Who you are:

  • Bachelor’s degree in an Information Technology related field, or a minimum of 6+ years comparable experience in a technology administration role
  • Advanced knowledge of Microsoft Operating Systems such as Windows Server and Windows 10/11
  • Advanced administration experience with Public Cloud platforms with focus in Microsoft 365 and Azure (Azure AD, Exchange Online, SharePoint Online, OneDrive for Business, Teams, Intune)
  • Experience in administration of e‑mail platforms and security integrations such as Exchange Online
  • Experience in virtualization administration on platforms such as VMware vSphere and Hyper‑V
  • Proficient in incident response management during security events and high‑priority escalations, as well as disaster recovery and business continuity activations

Bonus points if you have:

  • Experience with Managed Service Providers (MSP) preferred
  • Financial Services or Life Science industry experience a plus

ECI’s culture is all about connection – connection with our clients, our technology and most importantly with each other. In addition to working with an amazing team around the world, ECI offers a competitive compensation package and so much more! If you believe you’d be a great fit and are ready for your best job ever, we’d like to hear from you!

Love Your Job, Share Your Technology Passion, Create Your Future Here!

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Posted: April 10th, 2026