John Sim

John Sim Email and Phone Number

Head of Information Technology & Security @ VIOOH @ VIOOH
John Sim's Location
London, England, United Kingdom, United Kingdom
John Sim's Contact Details

John Sim personal email

n/a
About John Sim

A experienced leader with a passion for technology and how it can enable effective business outcomes, experience in many verticals and in different aspects of technical delivery, solution architecture, service delivery and assurance. A background in engineering and managing engineering functions, coupled with recent extensive service delivery experience, enables me to see the bigger picture and communicate as effectively to an engineer as to a Cxx stakeholder.Specialities: Deep technical understanding that I can articulate to anyone, customer requirements capture, solution design, commercial acuity, Incident management and resolution, customer service excellence, continual improvement, problem management, customer solution integration, ITIL, ITSM, Service Transition, Service Introduction, Problem Management, Change Management, Risk Management, Escalation Management

John Sim's Current Company Details
VIOOH

Viooh

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Head of Information Technology & Security @ VIOOH
John Sim Work Experience Details
  • Viooh
    Head Of Information Technology & Security
    Viooh Oct 2022 - Present
    London, England, Gb
  • Vodafone Business
    Customer Design Authority
    Vodafone Business Dec 2021 - Aug 2022
    London, Uk, Gb
    A senior customer facing role owning the entire low-level customer solution, providing technical leadership and assurance during the later stages of the pre-sales cycle, through to delivery.Key achievements in this role: Delivered the design enabling transformation from border security to a zero-trust model for a national infrastructure provider.
  • Vodafone Business
    Customer Solution Authority
    Vodafone Business Feb 2017 - Dec 2021
    London, Uk, Gb
    A senior customer facing role owning the entire pre-sales journey from concept pitch to high-level design. Key achievements in this role: Delivered £11m of business in various programmes including data centre security perimeter virtualisation, high-speed secure cloud gateway, security transformation to zero trust, Next generation LAN & numerous technology refresh projects in the WAN/LAN/Security space
  • Vodafone Global Enterprise
    Client Service Manager
    Vodafone Global Enterprise Apr 2013 - Feb 2018
    London, Gb
    Working in the insurance sector within customer pre-sales and service, Northern Europe. I was primarily responsible for service and service delivery for FTSE100 clients.
  • Cable & Wireless Communications
    Service Manager
    Cable & Wireless Communications Aug 2011 - Apr 2013
    Miami, Florida, Us
    Service Manager within the Finance & Professional services vertical, primarly tasked with a FTSE100 client. Responsible for all aspects of the live service and service relationship.
  • Cable & Wireless Communications
    Operations Manager - High Care Delivery
    Cable & Wireless Communications Apr 2009 - Aug 2011
    Miami, Florida, Us
    High care delivery was an elite organisational unit responsible for the top 10% of customer accounts, delivering either an enhanced structured service wrap or a truly bespoke offering as required.I was responsible for the teams engaged in 3rd line support, project delivery & delivery assurance of managed customer networks and projects within high care delivery operations.
  • Demon Internet Ltd [Thus Plc]
    Managed Solutions Engineering Manager
    Demon Internet Ltd [Thus Plc] Aug 2007 - Apr 2009
    Responsible for customer network & compute systems 3rd line support, project delivery and customer integration within Managed Solutions, covering finance, government, utilities and media sectors.
  • Thus Plc
    Unix Team Leader
    Thus Plc Sep 2003 - Aug 2007
    Various roles, primarily managing a variety of teams engaged with the support, maintenance and project delivery of managed customer solutions and platforms
  • Demon Internet Ltd
    Systems Administrator
    Demon Internet Ltd Oct 1999 - Sep 2003
    London, Gb
    Systems Administrator primarily dealing with ISP back-end systems, from AAA though DNS to Xylans and just about everything in between. Maintaining and ensuring stellar uptime across multiple platforms including shared and dedicated hosting from provisioning systems to backups.Building and configuring servers on various flavours of Unix OS, from FreeBSD to Solaris.Maintaining DNS systems for millions of domains. Configuration and maintenance of SAN/NAS infrastructure. Shell scripting, perl and all the normal two and three letter tools that come with it.Experience with MySQL and Oracle databases, maintenance and configuration of dial-up infrastructure and equipment and in house developed enterprise systems built on anything from Apache to JES.Experience with high availability systems from RAID to Veritas Cluster Server as well as proprietary HA technologies from Sun, HP and others.Experience in systems and network design, specification, build, test and production support and troubleshooting.
  • Reflections
    Network Manager
    Reflections 1997 - 1999
    Newcastle Upon Tyne, Tyne And Wear, Gb
    Reflections had fairly complex IT requirements and needs, but were resourcing this from within the team of talented games programmers. I was hired primarily to take on all IT support functions and allow the team to focus on their primary objectives. With over 100 creative people the challenges were many and varied, from simple PC issues to networking and server support. During my time at reflections I upgraded and standardised the network, implemented asset tracking, reverse proxy and firewall, backup infrastructure and WAN link to move away from dial-up for email – you name it I did it. Supporting Windows PC’s, Silicon Graphics workstations and render-farms and all manner of software and hardware. My time at reflections only came to an end when I was presented with an opportunity to move to Demon internet in order to further my career, I was able to recommend a trusted and extremely capable replacement who took over and stayed with the company for many years.

John Sim Skills

Telecommunications Itil It Service Management Service Delivery Managed Services Incident Management Project Delivery Data Center Wan Continuous Improvement Network Design Servers Networking Customer Service Unix Voip Dns Solaris Infrastructure Troubleshooting Problem Management Change Management Management Ip Service Management High Availability Service Improvement Cloud Computing Stakeholder Management Cisco Technologies Enterprise Software Mpls It Management Disaster Recovery Prince2 It Strategy Customer Satisfaction Sla It Operations Outsourcing Service Desk Business Process It Outsourcing Operations Management Leadership Network Administration Service Level Agreements System Deployment

John Sim Education Details

  • Ponteland County High School
    Ponteland County High School
    Biology

Frequently Asked Questions about John Sim

What company does John Sim work for?

John Sim works for Viooh

What is John Sim's role at the current company?

John Sim's current role is Head of Information Technology & Security @ VIOOH.

What is John Sim's email address?

John Sim's email address is js****@****ail.com

What schools did John Sim attend?

John Sim attended Ponteland County High School.

What are some of John Sim's interests?

John Sim has interest in Science And Technology, Education, Environment.

What skills is John Sim known for?

John Sim has skills like Telecommunications, Itil, It Service Management, Service Delivery, Managed Services, Incident Management, Project Delivery, Data Center, Wan, Continuous Improvement, Network Design, Servers.

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