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Silver Lake - Team
John Berkley
Operating Executive
Silicon Valley
Value Creation
John Berkley joined Silver Lake in 2017 and is an Operating Executive. Prior to Silver Lake, Mr. Berkley oversaw the product, technology, and operations functions at Mercury Payment Systems (now Vantiv Integrated Payments). Previously, he was a member of the senior executive team at Responsys, a marketing automation software company that is now part of Oracle. Prior to that, Mr. Berkley ran product management at Tealeaf, an analytics software company that was acquired by IBM. Mr. Berkley has also been a co-founder, CEO, advisor, and board member at several software startups.
 
Mr. Berkley earned a B.A. cum laude from Williams College, and an M.B.A. with distinction from Harvard Business School.
 
Sureel Choksi
Operating Executive - currently on assignment as CEO of Vantage
Silicon Valley
Value Creation

Sureel Choksi joined Silver Lake in 2013 and is an Operating Executive. He currently serves as President, Chief Executive Officer and board member of Vantage Data Centers, LLC. Prior to Silver Lake, Mr. Choksi was Chief Executive Officer of Elevation Data Centers, a private equity-backed data center roll-up. Previously, Mr. Choksi held several executive roles with Level 3 Communications, including chief marketing officer, president of wholesale markets, executive vice president of services, chief financial officer, group vice president of corporate development and treasurer. Before Level 3, Mr. Choksi worked in venture capital at TeleSoft Partners and investment banking at Gleacher & Company. Mr. Choksi received a B.S. in Economics from the Wharton School with concentrations in Finance, Accounting, and Entrepreneurial Management, and a B.A.S. from the School of Engineering and Applied Science, both from the University of Pennsylvania.

Jonathan Galore
Operating Executive
London
Value Creation

Jonathan Galore joined Silver Lake in 2015 and is an Operating Executive. Prior to Silver Lake, he held a number of senior executive roles, most recently as Chief Technology Officer at Wonga Group, a digital finance company where he reorganised the technology division, developing its capabilities to support a portfolio of products and global markets and provide service to millions of consumers worldwide. Prior to this role, Mr. Galore was Vice President of International Operations at Wonga Group where he developed and implemented the company’s global expansion plans, including launching its businesses in South Africa, Canada, Poland and Spain.

Mr. Galore was previously a co-founder and served as Vice President of Product for Wealthfront.com, an automated investment service based in Palo Alto, California. As a member of the company’s founding team, he helped lead the development of its early products and worked on a number of growth initiatives. Before Wealthfront, Mr. Galore was a Strategy Consultant with Bain & Company in San Francisco, where he worked on client engagements in the Technology, Media & Telecom, and Private Equity Groups. Mr. Galore began his career at Comverse, Inc. where he held several software engineering roles. Mr. Galore has also held advisory and board roles with a number of early stage financial technology sector businesses. He holds a B.A. in computer science from the Academic College of Tel Aviv Yaffo and an M.B.A. from the Stanford Graduate School of Business. 

Mark Gillett
Managing Director and Head of Value Creation
Silicon Valley
Value Creation

Mark Gillett is a Managing Director and Head of Value Creation. He originally joined Silver Lake in 2009 to lead the value creation efforts of Silver Lake in Europe. He rejoined the firm in his current role in 2013 following  a period serving as Chief Development and Chief Operating Officer of Skype Global S.à.r.l, a former portfolio company, and as a Corporate Vice President of Microsoft. At Skype and then at Microsoft, Gillett drove acceleration of Skype's growth strategy and led its integration following Microsoft's acquisition of the business. Mr Gillett also oversaw the broader growth of Microsoft's enterprise and consumer communications, cloud, software and services portfolio.
 
Mr. Gillett is based in Menlo Park, and previously worked in the firm's London office. He works closely with CEOs and their teams across the Silver Lake portfolio and serves on the board of directors of Quorum Business Solutions, Inc. and he previously served on the board of directors for European Directories, the holding company for DTG, Fonecta and Herold.
 
Prior to Silver Lake, Mr. Gillett was a Managing Director and Partner leading the High Technology, Telecoms and Private Equity practice at Alvarez & Marsal ("A&M") in Europe. At A&M, he specialized in restructuring and operational diligence, performance improvement and turnaround management of online, consumer and enterprise software and device businesses. While at A&M, he served in interim leadership positions and advisory or operating roles including at Lehman Brothers Holdings International, ADT/Tyco (France), Navigon AG, and iSOFT plc. He also led engagements with several leading private equity firms.
 
Mr. Gillett is a Member of the British Computer Society, a Fellow of the Institute of Directors and Member of the IT Service Management Forum.

Mike Gleeson
Associate
Silicon Valley
Value Creation

Mike Gleeson joined Silver Lake in 2016 as an Associate on the Value Creation team. Previously, he worked at McKinsey & Company serving consumer and technology clients. Mr. Gleeson graduated cum laude from Northwestern University with a B.S. in Chemical Engineering.

Stuart Goldberg
Associate
New York
Value Creation

Stuart Goldberg joined Silver Lake in 2015 as an Associate on the Value Creation team. Previously, he worked at McKinsey & Company serving media, airline, chemicals, and retail clients. Mr. Goldberg graduated Magna Cum Laude from The Wharton School of the University of Pennsylvania, where he received a B.S. in Economics with a concentration in Finance.

Caimin Jones
Operating Executive
London
Value Creation

Caimin Jones joined Silver Lake in 2011 and is an Operating Executive. He recently served as interim chief technology officer for Global Blue. He has over 18 years of experience in both operational and advisory roles, with extensive cross-European experience in multiple sectors.

Prior to Silver Lake, Mr. Jones was a Director in Alvarez & Marsal's Private Equity Performance Improvement Group in Europe, where he worked with a range of private equity sponsored businesses, typically related to operational turnarounds and carve outs, and managed the transitional services for Lehman Brothers Holdings in Europe. Prior to Alvarez & Marsal, Mr. Jones worked for Marakon Associates, a boutique strategy consulting firm, where he worked on large scale, growth oriented projects in the financial services and pharmaceutical industries.

Mr. Jones started his career as a software engineer developing short messaging systems for mobile networks and subsequently managed large-scale energy infrastructure projects at Siemens AG. Mr. Jones holds a B.Eng. in Electronic Engineering from the University of Limerick, Ireland, an M.B.A from IMD Business School in Switzerland and an L.L.B from the Open University in the U.K.

Tezira Nabongo
Senior Vice President, Talent Management
Silicon Valley
Value Creation

Tezira Nabongo joined Silver Lake in 2012 and is Senior Vice President - Talent Management. Prior to joining Silver Lake, Ms. Nabongo was the Director of Global Senior Talent Acquisition at Cisco Systems where she led global VP to C-Suite level external hiring, internal mobility, and strategic sourcing. Prior to Cisco Systems, she was an executive search consultant in the Software and Technology Practices of Heidrick & Struggles. Ms. Nabongo holds an A.B. in Legal Studies from the University of California at Berkeley and J.D. and M.A. degrees from the University of Southern California.

Serene Nah
Senior Operating Executive
Hong Kong
Value Creation

Serene Nah joined Silver Lake in 2011 and is a Senior Operating Executive. Previously, Ms. Nah was CFO of GE Capital Greater China, where she was the key executive in charge of finance, treasury, and tax operations. She also worked with the management team to revamp strategy and worked on forging joint ventures and business development opportunities with large state-owned enterprises. Ms. Nah worked for GE in various business units for 10 years on a management fast track, in which, she spent 4 years on the Corporate Audit Staff (CAS), covering financial, process, compliance audits, and M&A work in Europe, the US, and Asia. Ms. Nah has a strong background in internal audit, financial reporting, FP&A, financial systems, and financial strategy and has spent the last 4 years focusing on operations in China and the rest of Asia. Ms. Nah holds an Executive M.B.A from Kellogg- HKUST and a B.S. degree from Nanyang Business School at Nanyang Technological University in Singapore. She is fluent in English, Mandarin, and Cantonese.

Ryan Surveski
Associate
Silicon Valley
Value Creation

Ryan Surveski joined Silver Lake in 2015 as an Associate on the Value Creation team. Previously, he worked at The Boston Consulting Group serving technology, media, financial services, healthcare, and consumer goods clients. Mr. Surveski holds a M.Eng. in Mechanical Engineering with a focus in Manufacturing from Massachusetts Institute of Technology and a B.S. in Mechanical Engineering from Rensselaer Polytechnic Institute.

Amanda Torie
Associate
New York
Value Creation

Amanda Torie joined Silver Lake in 2016 as an Associate on the Value Creation team. Previously, she worked at Bain & Company serving consumer goods, industrials and private equity clients. Ms. Torie graduated summa cum laude from Georgia Tech, where she received a B.S. in Business with a concentration in Finance.

At A Glance

Silver Lake has a team of approximately 100 investment and value creation professionals located around the world. Focused both on developed economies and emerging markets, Silver Lake's investment and value creation team operates in Silicon Valley, New York, London, Hong Kong, and Tokyo and manages investments throughout North America, South America, Europe, and Asia.