Stuart Greenslade
@stuartgreenslade
Strategic technology executive with extensive experience in cloud and security.
What I'm looking for
I am a strategic and outcome-driven technology executive with over 28 years of global experience leading high-impact teams across security, cloud, networking, and IT. My career has been marked by proven success in business turnarounds, enterprise go-to-market strategy and execution, and cloud innovation. I pride myself on my ability to shape talent and inspire teams to exceed their potential, fostering a culture of growth and excellence.
Throughout my career, I have achieved notable wins, including turning underperforming businesses from 36% to 113% target achievement within a fiscal year and scaling specialist practice teams by 35%. My expertise spans across various sectors, including finance, transport, media, and telecoms, where I have defined and created strategic partnerships to support go-to-market strategies. I am passionate about driving transformation and delivering impactful results that contribute to organizational success.
Experience
Work history, roles, and key accomplishments
Practice Leader
Kyndryl UK
May 2023 - Present (2 years)
Led a team of 28 specialists and matrix-managed 64, turning performance from 36% to 113% of target for FY25. Delivered breakthrough wins with major finance clients and scaled the team by 35%, boosting delivery impact.
Practice Leader
Kyndryl UK
May 2023 - Present (2 years)
Led a team of 28 specialists and matrix-managed 64, turning performance from 36% to 113% of target for FY25. Delivered breakthrough wins with major finance clients and scaled the team by 35%, boosting delivery impact.
Global Sales Director – MNO
F5 Networks
Nov 2012 - Present (12 years 6 months)
Set up the new global accounts function, exceeding both quota and growth targets each year with YoY growth of 133%, 52%, and 27%. Led a team of 19 Major Account Managers across Northern & Southern Europe, Africa, APAC, and the Middle East.
Business Unit Leader
Juniper Networks
Jan 2007 - Present (18 years 4 months)
Led the Security & Applications Business Unit as a specialist team engaging in sector teams to drive business. Recognized 44% YoY growth in year one (2007-08).
Major Account Manager
Juniper Networks
May 2006 - May 2008 (2 years)
Directly managed multi-million dollar tier 1 mobile and fixed-line service provider accounts, managing a team of 2 direct and 6 matrix reports. Closed the single largest deal in SP team history at $11.4M with EE and achieved breakthrough multi-million dollar wins into Vodafone UK and Vodafone group.
Major Account Manager
Juniper Networks
May 2006 - Present (19 years)
Directly managed multi-million dollar tier 1 mobile and fixed-line service provider accounts, leading a team of 2 direct and 6 matrix reports. Closed the single largest deal in SP team history at $11.4M with EE and achieved breakthrough wins into Vodafone UK and Vodafone group.
Service Provider Sales Director – UKI
F5 Networks
Apr 2011 - Present (14 years 1 month)
Hired and led a team of 5 Major Account Managers and 4 systems engineers focused on major Telco and Media accounts. Rebuilt an underperforming team and rapidly coached them to a position of strength, achieving YoY growth of 27% and 34%.
Sales Executive
Cable & Wireless
Jan 2003 - Present (22 years 4 months)
Managed and developed sales strategies for various telecommunications services. Focused on client relationship management and achieving sales targets.
Sales Executive
Cable & Wireless
Jan 2003 - Jan 2006 (3 years)
Managed sales activities and client relationships for various telecommunications services. Focused on achieving sales targets and expanding the customer base.
Managing Director
Greenslade Design
Jan 2002 - Jan 2003 (1 year)
Oversaw all aspects of business operations, including strategic planning, project management, and client acquisition. Managed a small team and ensured successful project delivery.
Managing Director
Greenslade Design
Jan 2002 - Present (23 years 4 months)
Oversaw all aspects of business operations, including strategic planning, client acquisition, and project management. Managed a small team to deliver design solutions.
Solutions Consultant
186K Limited
Jan 2001 - Jan 2002 (1 year)
Provided expert technical consulting and solutions design for clients. Collaborated with sales teams to present technical solutions and address client requirements.
Solutions Consultant
186K Limited
Jan 2001 - Present (24 years 4 months)
Provided expert technical consultation and solutions to clients, analyzing their needs and recommending appropriate technologies. Collaborated with sales teams to support pre-sales activities.
Pre-Sales Specialist
Global Crossing UK
Jan 1999 - Jan 2001 (2 years)
Provided pre-sales technical support and expertise for network solutions. Assisted sales teams in developing proposals and presenting technical aspects to potential clients.
Network Engineer
Fibernet Limited
Jan 1998 - Jan 1999 (1 year)
Managed and maintained network infrastructure, ensuring optimal performance and reliability. Troubleshot network issues and implemented solutions to minimize downtime.
Pre-Sales Specialist
Global Crossing UK
Jan 1999 - Present (26 years 4 months)
Supported sales teams by providing technical expertise and product demonstrations to potential clients. Developed and delivered technical presentations and proposals.
Network Engineer
Fibernet Limited
Jan 1998 - Present (27 years 4 months)
Managed and maintained network infrastructure, ensuring optimal performance and reliability. Troubleshot network issues and implemented solutions.
Technical Support Engineer
SITA/Equant
Jan 1997 - Jan 1998 (1 year)
Provided technical support to end-users, resolving hardware and software issues. Documented support requests and solutions, contributing to a knowledge base.
Technical Support Engineer
SITA/EQUANT
Jan 1997 - Present (28 years 4 months)
Provided technical support to end-users, resolving hardware and software issues. Documented support requests and solutions.
Consulting Leader
Kyndryl UK
Nov 2021 - May 2023 (1 year 6 months)
Promoted to lead a team of 12 consultants and architects, defining and creating strategic technology partnerships to support GTM strategy. Led cross-vertical business development for services consultancy and drove services engagements focused on hybrid and multi-cloud infrastructure transformation.
Global Sales Director - MNO
F5 Networks
Nov 2012 - Jun 2014 (1 year 7 months)
Led a team of 19 Major Account Managers across Northern & Southern Europe, Africa, APAC, and the Middle East, carrying a 20% YoY growth target. Set up the new global accounts function in F5 and exceeded both quota and growth targets each year.
Consulting Leader
Kyndryl UK
Nov 2021 - Present (3 years 6 months)
Promoted to lead a team of 12 consultants and architects, defining and creating strategic technology partnerships to support GTM strategy. Led cross-vertical business development for services consultancy and cloud infrastructure transformation sales.
Sales Leader Cloud, Network & Data
IBM UK
May 2019 - Nov 2021 (2 years 6 months)
Led cloud infrastructure transformation sales and drove services engagements focused on hybrid and multi-cloud infrastructure optimization. Defined key Network & Edge messaging into the client base across global markets.
Sales Director
Oneserve
Jul 2018 - Feb 2019 (7 months)
Defined and led the sales and business development strategy for a regional-based SaaS start-up specializing in business workflows software, IoT, and AI technologies. Designed and installed a sales process and sales incentive commission scheme.
Sales Director
Oneserve
Jul 2018 - Present (6 years 10 months)
Defined and led the sales and business development strategy for a regional-based SaaS start-up specializing in business workflows software, IoT, and AI technologies. Designed and installed a sales process and sales incentive commission scheme.
Sales Leader Cloud, Network & Data
IBM UK
May 2019 - Present (6 years)
Drove services engagements focused on hybrid and multi-cloud infrastructure optimization, cloud compute, and data lake management. Defined key Network & Edge messaging into the client base across global markets.
Sales Director - UK & Ireland
Affirmed Networks
May 2017 - Jul 2018 (1 year 2 months)
Led the GTM strategy and execution for UK & Ireland's leading Mobile Network Operators and MVNOs, focusing on transforming core network assets to cloud-based/virtualized platforms. Responsible for a four-fold increase of the business funnel in the UK, Ireland, and Channel Islands.
Sales Director - UK & Ireland
SpiderCloud Wireless
Mar 2016 - Mar 2017 (1 year)
Led the go-to-market strategy and execution for Vodafone for in-building mobile wireless solutions, working with MNOs and end customer enterprises. Consulted with a major mobile customer to repair a broken process, resulting in 27% YoY growth.
Sales Director - UK & Ireland
SpiderCloud Wireless
Mar 2016 - Present (9 years 2 months)
Led the go-to-market strategy and execution for Vodafone for in-building mobile wireless solutions, working with MNOs and end customer enterprises. Consulted with a major mobile customer to repair a broken process, resulting in 27% YoY growth.
Vice President Networking - EU Region
Avaya Inc
Jul 2014 - Jan 2016 (1 year 6 months)
Led the data networks P&L in Europe for this market leader in unified communications, with dual reporting into the president of Europe and US board level. This was a turnaround role as growth figures were -38% YoY upon joining, achieving 6% and 11% YoY growth in subsequent years.
Vice President Networking – EU Region
Avaya Inc
Jul 2014 - Present (10 years 10 months)
Led the data networks P&L in Europe for this market leader in unified communications, achieving YoY growth of 6% in year 1 and 11% in year 2. Built and led a team of 45 experts covering direct sales, technologists, marketing, and channel.
Sales Director - UK & Ireland
Affirmed Networks
May 2017 - Present (8 years)
Led the GTM strategy and execution for UK & Ireland's leading Mobile Network Operators and MVNOs, focusing on transforming core network assets to cloud-based platforms. Responsible for a four-fold increase of the business funnel in the UK, Ireland, and Channel Islands.
Service Provider Sales Director - UKI
F5 Networks
Apr 2011 - Nov 2012 (1 year 7 months)
Hired and led a team of 5 Major Account Managers and 4 systems engineers focused on major Telco and Media accounts. Defined and executed the service provider go-to-market strategy in the UK & Ireland, rebuilding an underperforming team to a position of strength.
Strategic Partner Sales Manager
Juniper Networks
May 2008 - Apr 2011 (2 years 11 months)
Led the Global Sales strategy for Vodafone Group with Juniper's Strategic Partner, Nokia Siemens Networks, matrix-managing a team of 19 Major Account Managers globally. Created and drove three-way commercial agreements through the business.
Sales Director / Partner Manager
Juniper Networks
May 2005 - May 2008 (3 years)
Led the Security & Applications Business Unit as a specialist team, engaging in sector teams to drive business. Recognized 44% YoY growth in the first year (2007-08).
Strategic Partner Sales Manager
Juniper Networks
May 2008 - Present (17 years)
Led the Global Sales strategy for Vodafone Group with Juniper's Strategic Partner, Nokia Siemens Networks, matrix-managing a team of 19 Major Account Managers globally. Created and drove three-way commercial agreements through the business.
Education
Degrees, certifications, and relevant coursework
Oxford Brookes University
HND, Electronic Engineering
Studied Electronic Engineering, gaining a Higher National Diploma from Oxford Brookes University. This program provided a strong foundation in electronic principles and applications.
Farnborough College of Technology (University of Surrey)
BEng Fdn, Aerospace Engineering
Completed a Bachelor of Engineering Foundation in Aerospace Engineering at Farnborough College of Technology, affiliated with the University of Surrey. This foundational degree provided insights into aerospace principles.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
Job categories
Skills
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