Christopher O'Sullivan
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Christopher O'Sullivan Email & Phone Number

IT Technician at Rider Levett Bucknall
Location: Birmingham, England, United Kingdom 5 work roles
1 work email found @barclays.com LinkedIn matched
✓ Verified August 2026 3 data sources Profile completeness 86%

Contact Signals · 1 work email

Work email c****@barclays.com
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Current company
Role
IT Technician
Location
Birmingham, England, United Kingdom

Who is Christopher O'Sullivan? Overview

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Quick answer

Christopher O'Sullivan is listed as IT Technician at Rider Levett Bucknall, based in Birmingham, England, United Kingdom. AeroLeads shows a work email signal at barclays.com and a matched LinkedIn profile for Christopher O'Sullivan.

Christopher O'Sullivan previously worked as Senior Service Desk Analyst at Serco and Second Line Support Analyst at Compass Group.

Company email context

Email format at Rider Levett Bucknall

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{first}.{last}@barclays.com
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AeroLeads found 1 current-domain work email signal for Christopher O'Sullivan. Compare company email patterns before reaching out.

Profile bio

About Christopher O'Sullivan

Experienced 2nd Line IT Support Analyst who loves all things technical. Started dabbling in assembly language at school whilst other students just played games. Worships Active Directory for its flexibility and scalability and admires Office365 as a true succession rather than just another version.Enjoys desk work, but understands the importance of keeping fit. Belted through calls and tickets when on 1st Line, but much prefers the study involved with 2nd Line problems.Would eventually like to join a server support team.

Listed skills include Active Directory, Technical Support, Vmware, Infrastructure, and 6 others.

Current workplace

Christopher O'Sullivan's current company

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Rider Levett Bucknall
Rider Levett Bucknall
IT Technician
Birmingham, GB
AeroLeads page
5 roles

Christopher O'Sullivan work experience

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Senior Service Desk Analyst

Birmingham, United Kingdom

Jun 2018 - Dec 2018

Second Line Support Analyst

Birmingham, United Kingdom

Duties consisted of service requests and incidents, including:-REIMAGINGSCCM for Windows 7 and 8.1 and separately Ubuntu. They can either be done by myself in the office, or for elsewhere, a field engineer can attend. I help keep the reimaging guides up to date and provide engineer telephone support.O365 MAILBOXESThere are shared, F1 and E3 flavours and distribution groups. Only shared mailboxes and distribution groups are created by me in the O365 Admin Center, as F1 and E3 mailboxes are set to synchronise from AD.FILE SERVER ACCESSIf a new AD group is required then 3rd line has to create it, but not before I study the existing groups’ permissions first to give access.ONEDRIVEAs the estate uses folder redirection for automatic OneDrive synchronisation, if the OneDrive client fails to run for any reason then it can lead to either multiple local OneDrive locations, by the user trying to fix it, or even worse, a complete failure of any synchronisation. Responsibility fell on my team and I and we came up with our own procedure to ensure the user’s data gets fully sync’d again.WINDOWS1st line escalated a ticket because their credentials weren’t being accepted to make administrative changes on a user’s computer. My suggestion to flush DNS and reboot didn’t help. So, using Telnet, I set a password on the local Administrator's account, logged in on that, mirrored my DNS and got domain authentication working again. Still a mystery how it obtained those settings.KNOWLEDGEBASEAlso, part of the catering contract with MoD sites is to use dial-up modems, possibly to disenchant would be hackers. The onsite Compass computers and tills solely rely on this network and too often tickets were being escalated to us. Frustrated by this, I wrote a 17 step knowledge base guide to troubleshoot the technology and since then the escalations have dropped considerably.

Oct 2012 - Jun 2018

Computer Engineer

Birmingham, United Kingdom

ENGINEERINGPart of the team assigned to the imaging, configuring, testing and repair of desktops, laptops and servers. Additionally providing client technical support and with dealing with complex escalations of complex issues.PROJECTSDemonstrated technical prowess when maintaining, configuring and testing Windows XP Embedded touch screen gambling kiosks on a recent project. Would identify solutions for hardware and software problems and liaise with the customer on technical issues and workarounds.INITIATIVEKick started off another project and showed own initiative when solely testing and evaluating components from decommissioned computers for direct liaison withthe sales team. Devised process documentation to assist future project members and built spreadsheets that queried the company database.

Feb 2005 - Oct 2012
FAQ

Frequently asked questions about Christopher O'Sullivan

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What company does Christopher O'Sullivan work for?

Christopher O'Sullivan works for Rider Levett Bucknall.

What is Christopher O'Sullivan's role at Rider Levett Bucknall?

Christopher O'Sullivan is listed as IT Technician at Rider Levett Bucknall.

What is Christopher O'Sullivan's email address?

AeroLeads has found 1 work email signal at @barclays.com for Christopher O'Sullivan at Rider Levett Bucknall.

Where is Christopher O'Sullivan based?

Christopher O'Sullivan is based in Birmingham, England, United Kingdom while working with Rider Levett Bucknall.

What companies has Christopher O'Sullivan worked for?

Christopher O'Sullivan has worked for Rider Levett Bucknall, Serco, Compass Group, and Specialist Computer Services Limited.

How can I contact Christopher O'Sullivan?

You can use AeroLeads to view verified contact signals for Christopher O'Sullivan at Rider Levett Bucknall, including work email, phone, and LinkedIn data when available.

What skills is Christopher O'Sullivan known for?

Christopher O'Sullivan is listed with skills including Active Directory, Technical Support, Vmware, Infrastructure, Computer Hardware, Windows 10, Office 365, and File Servers.

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