MLMark Lillywhite

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Experience

Identity security and privileged access

Visibility and control of constantly changing human, non-human and AI identities, and the privilege they hold, is hard. Knowing when that privilege is being misused is harder. I help organisations discover and control every aspect of privileged use, then add layers of control, recording and governance whatever is accessing the underlying privilege.

Career

Jun 2021 – Present

Enterprise Sales Engineer

Delinea · Oxfordshire · UK & Ireland

PRESIDENT'S CLUB 2026QUOTA CLUB ×2

  • Run the technical sales cycle for enterprise prospects across the UK & Ireland: discovery, demos, proofs of concept and competitive positioning.
  • Advised hundreds of customers on bringing privileged access under control and proving that control to auditors, boards and regulators.
  • Extend privileged access into machine and non-human identity, securing the credentials that AI agents and automated workloads rely on so organisations can adopt AI with full accountability.
  • Specialist in Cloud Identity and Privileged Access: PASM, PEDM, Zero Trust, ITDR, CIEM, SIEM integration and cloud privilege visibility.
  • Delinea Certified Engineer (Dec 2025). Recognised in Quota Club for two consecutive years and at the 2026 President's Club.
Sep 2015 – May 2021

Senior Sales Engineer

Snow Software · UK & Ireland

  • Ran the technical sales cycle for enterprise prospects with the UK & Ireland sales team.
  • Delivered software asset management, cloud optimisation and orchestration presentations and demos.
  • Presented at industry events and customer forums.
Jan 2014 – Aug 2015

Senior Systems Engineer

1E · UK & Europe

  • Presented and installed SCCM add-on and software lifecycle optimisation products for enterprise customers across Europe.
  • Built deep architectural knowledge of SCCM 2012 R2 to demo and deploy 1E Nomad in test and production.
  • Presented at industry and partner events.
Jan 2011 – Dec 2013

UK & Ireland Technical Manager

Matrix42 · Greater Reading area

  • Owned all technical and marketing activity for the UK, Scandinavia and South Africa: demos, proofs of concept, services coordination, technical account management and escalations.
  • Wrote and localised product marketing collateral and white papers, ran marketing events and spoke at industry forums.
  • Worked joint opportunities with alliance partners ServiceNow, BMC, Microsoft, Citrix and AirWatch.
Dec 2009 – Jan 2011

Regional Product Manager, EMEA

Symantec (Altiris) · EMEA

  • EMEA focal point for Altiris products, reporting to the development labs in Utah.
  • Presented roadmap and vision to customers and partners; advised on pricing, lifecycle strategy, sales and marketing campaigns.
  • Coordinated beta programmes and owned competitive positioning in EMEA.
Mar 2004 – Nov 2009

Pre-Sales Consultant, then UK Pre-Sales Manager

Symantec (Altiris) · UK

NO. 1 GLOBALLY 2006 & 2007

  • Partnered with an enterprise account manager across finance, insurance and industry; exceeded quota in 2004, 2005, 2006 and 2007.
  • No. 1 team in EMEA in 2005 (of 26) and No. 1 sales team globally in 2006 and 2007 (of 84).
  • Managed the UK pre-sales team in 2008, which delivered 179% of quota; grew the team from 7 to 14 people in 2009.
  • Enabled alliance and channel partners: training, demo centres, seminars and RFI/RFP support.

Certifications

  • Delinea Certified EngineerDelinea · Dec 2025
  • Microsoft Certified: Azure FundamentalsMicrosoft · Jan 2024

Education

  • BSc (Hons) Computer Science, 2:1University of Reading · 1993 – 1996

Recognition

  • President's ClubDelinea · 2026
  • Quota ClubDelinea · two consecutive years
  • No. 1 sales team globally (of 84)Altiris / Symantec · 2006 and 2007
  • 179% of quota as UK pre-sales managerAltiris / Symantec · 2008

Volunteering

  • Communications & Publicity Manager, Woodcote Neighbourhood Plan2011 – present. Website, news, mailers and consultation events. The plan passed at referendum with 91% yes on a 60% turnout.
  • Treasurer, AFC Whitchurch2019 – present. Finances for a youth football club with 5 teams and 90+ players.

Skills

PAMPASMPEDMITDRCIEMZero TrustSecrets managementNHI & AI agentsSIEMAzureSCCMSAMPoC deliveryRFI / RFP

FAQ

Quick answers

What does Mark Lillywhite do?

Mark is an Enterprise Sales Engineer at Delinea, the identity security company. He leads the technical sales cycle for enterprise customers in the UK & Ireland, helping them discover, control and prove control of privileged access for people, machine identities and AI agents.

What are Mark's areas of expertise?

Privileged access management (PAM), including PASM and PEDM; identity threat detection and response (ITDR); cloud infrastructure entitlement management (CIEM); zero trust and zero standing privilege; secrets management; and securing non-human and AI agent identities. Earlier specialisms include endpoint management, software asset management and Microsoft SCCM.

How much experience does Mark have?

More than 20 years in enterprise IT and security pre-sales, starting at Altiris (later Symantec) in 2004, followed by Matrix42, 1E, Snow Software and Delinea since 2021.

Where is Mark based?

Oxfordshire, in the Greater Reading area of the United Kingdom, covering the UK & Ireland and wider EMEA.

How can recruiters or event organisers contact Mark?

Send Mark a message on LinkedIn at linkedin.com/in/mlillywh.

Looking for a senior identity security sales engineer?

I'm happy to talk about roles in identity security, privileged access and AI agent governance. Message me on LinkedIn.

Message me on LinkedIn