Sau Sheong Chang

Sau Sheong Chang

Director at PayPal, Rubyist, Author


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Sau Sheong Chang's Overview

  • Director, Regional Solutions Engineering at PayPal
  • Director, HP Labs Singapore at HP
  • Chief Technology Officer at Garena
  • Consultant at Saush Software and Services

500+ connections


Sau Sheong Chang's Summary

I am the Director of Regional Solutions Engineering for PayPal.

I was the Director of HP Labs Singapore, the advanced research arm of Hewlett-Packard. HP Labs Singapore was instrumental in clinching and is involved in the design and implementation of the first government-wide hybrid public-private cloud in the world.

My third book 'Exploring Everyday Things with R and Ruby', published by O'Reilly Media, was published in July 2012. It has been translated to Japanese and Chinese.

I was previously the CTO for a gaming platform and publishing company, Garena. My team developed Garena's software products and also deployed and maintained games published by Garena.

Prior to Garena I managed Yahoo! Southeast Asia's engineering team as the Director of Engineering. My team developed and maintained Yahoo web sites and services for Southeast Asia. I was also the Head of Yahoo Developer Network for Southeast Asia and drove developer related activities in the region.

Before Yahoo! I managed a global software development centre for Welcome Real-time, a global card marketing software provider, developing solutions for top international consumer banks. My team provided project delivery and product engineering functions, based out of Singapore and France.

Before that, I co-founded elipva, an e-business solutions specialist. In my role as Chief Architect and VP of Product Engineering, I developed a groundbreaking portal application framework was elipva's core product.

I published a book titled Ruby on Rails Web Mashup Projects in 2008 and another titled Cloning Popular Internet Applications with Ruby in 2010. I am active in a few developer communities in Singapore and regularly speak at developer conferences around the world.

In the past, I have provided technical consulting/advisory services to Internet startups, mentoring them in the technical and operational aspects of their business.

I am a certified arbitrator in Singapore.


Cloud computing, Internet applications, Payment software, Point-of-sales terminals, J2EE backend host, e-commerce, legal arbitration, Ruby on Rails, Ruby, EMV, R, Hadoop, Big Data, Data analytics

Sau Sheong Chang's Experience

Director, Regional Solutions Engineering


Public Company; 10,001+ employees; EBAY; Internet industry

September 2013Present (1 year 1 month) Singapore

I lead Regional Solutions Engineering for Asia and Latin America for PayPal. Regional Solutions Engineering (RSE) develops region and country specific products for PayPal's businesses. My team consists of cross-domain generalist engineers who deliver solutions spanning PayPal's multiple core products and services.

Director, HP Labs Singapore


Public Company; 10,001+ employees; HPQ; Information Technology and Services industry

April 2010September 2013 (3 years 6 months) Singapore

I built and lead a team of research scientists and engineers in HP Labs Singapore, the research arm of Hewlett-Packard. We research, innovate and build on cloud computing, big data and urbanization topics.

HP Labs Singapore was instrumental in clinching the first government-wide hybrid private-public cloud implementation in the world. Our technology powers the demand layer for the implementation and we are deeply involved in the execution and the implementation.

Chief Technology Officer


Privately Held; 1001-5000 employees; Internet industry

October 2009April 2010 (7 months)

Garena is the leading game platform providing a popular arena for gamers to interact with friends, challenge opponents and play their favorite multiplayer games over the Internet with gamers worldwide.

I hold the portfolios of product management and software development in Garena, managing product managers, architects, developers, test engineers and so on.


Saush Software and Services

July 2009April 2010 (10 months)

I consult for various Internet related startups, providing services for a number of activities including technology advisory, platform and architecture review/recommendation, technical management, software development process re-engineering and technical recruitment. Among startups I have consulted for are Mr. Tweet (recommendation engine), Ohanae (password management), Clearview Solutions (security and compliance management), Garena (gaming platform), SportsHook (sports social network) and Buuuk (mobile food recommendation).

I am no longer actively consulting for startups though I do occasionally still provide technical and domain related advice for early stage startups.

Engineering Director


Public Company; 10,001+ employees; YHOO; Internet industry

June 2008July 2009 (1 year 2 months)

I manage the engineering team for Yahoo! South-East Asia that is responsible for all Yahoo! properties in Singapore, Malaysia, Vietnam, Philippines, Indonesia and Thailand. Some of the properties managed and by my team include Yahoo! Vietnam 360plus, Yahoo! Singapore and Malaysia Travel and all the Yahoo! news and front page sites for all the countries.

I also lead Yahoo!'s developer outreach efforts in South-East Asia and go round the various countries in the region giving talks to grassroots developer events like Barcamp.

Software Development Director

Welcome Real-time

Privately Held; 51-200 employees; Information Technology and Services industry

November 2003May 2008 (4 years 7 months)

I manage a team of 50+ people in Singapore and France, split between Product Engineering, Project Delivery and Maintenance & Support.

Product Engineering develops complex state-of-the-art retail payment-related software for large banks around the world. It consists of 3 engineering teams, a validation and a solution team.

Project Delivery is a delivery team that customizes and integrates Welcome's products with the bank. It consists of 2 development team and a solutioning team and it works with a regional/local team of project managers and technical support.

Maintenance & Support is the backend support and resolution team that provides global support to all deployments in the field.

Chief Architect, VP Product Engineering (Co-Founder)


Privately Held; 11-50 employees; Information Technology and Services industry

December 1999November 2003 (4 years)

I co-founded elipva in 1999 with Thomas, and funding from ST Telemedia ( We started with the premise of a portal application framework (PAF) to help companies to build portals and e-businesses. By 2001 we had offices in Singapore, Malaysia and Hong Kong and about 120 people worldwide.

I managed the product engineering team of around 30 engineers, as VP of Product and Chief Architect, designing and managing the product development of elipva's software products. Most of the technologies are Java and J2EE based, with some development on mobile platforms, specifically J2ME. Later development focused on intranets and improving internal business processes.

In 2004, elipva was acquired by MDream Inworld, a HK listed company.

Government Agency; 1001-5000 employees; Information Technology and Services industry

April 1997December 1999 (2 years 9 months)

Seconded to the Singapore Sports Council, part of the pioneering team that helped build up the systems and network infrastructure for the Sports Council.

Public Company; 10,001+ employees; Telecommunications industry

July 1995April 1997 (1 year 10 months) Singapore

I was responsible for 2 out of 13 modules in the TELICAS project, the intended full re-write of the Singtel core billing system

Sau Sheong Chang's Skills & Expertise

  1. Ruby
  2. R
  3. Big Data
  4. Hadoop
  5. Web Applications
  6. Cloud Computing
  7. Ruby on Rails
  8. E-commerce
  9. EMV
  10. Software Development
  11. Mobile
  12. Open Source
  13. Architecture
  14. Java
  15. J2EE
  16. JavaScript
  17. AJAX
  18. MySQL
  19. Scalability
  20. Product Management
  21. Agile
  22. SaaS
  23. IT Strategy
  24. Outsourcing
  25. Product Development
  26. Web Services
  27. Virtualization
  28. Web 2.0
  29. Web Development
  30. HTML
  31. Application Development
  32. System Architecture
  33. Vendor Management
  34. Start-ups
  35. Programming
  36. Software Design
  37. Business Strategy
  38. Engineering
  39. Data Analysis
  40. Agile Methodologies
  41. Mobile Devices
  42. Java Enterprise Edition
  43. Software Project Management
  44. Security
  45. Mobile Applications
  46. Management
  47. Enterprise Architecture
  48. Enterprise Software
  49. Architectures
  50. Team Management

View All (50) Skills View Fewer Skills

Sau Sheong Chang's Publications

  • Explore Everyday Things with R and Ruby

    • O'Reilly Media
    • June 26, 2012
    Authors: Sau Sheong Chang

    If you’re curious about how things work, this fun and intriguing guide will help you find real answers to everyday problems. By using fundamental math and doing simple programming with the Ruby and R languages, you’ll learn how to model a problem and work toward a solution.

    All you need is a basic understanding of programming. After a quick introduction to Ruby and R, you’ll explore a wide range of questions by learning how to assemble, process, simulate, and analyze the available data. You’ll learn to see everyday things in a different perspective through simple programs and common sense logic. Once you finish this book, you can begin your own journey of exploration and discovery.

  • Cloning Internet Applications with Ruby

    • Packt Publishing
    • August 2010
    Authors: Sau Sheong Chang

    Most users on the Internet have a few favorite Internet web applications that they use often and cannot do without. These popular applications often provide essential services that we need even while we don’t fully understand its features or how they work. Ruby empowers you to develop your own clones of such applications without much ordeal. Learning how these sites work and describing how they can be implemented enables you to move to the next step of customizing them and enabling your own version of these services.

    This book shows the reader how to clone some of the Internet's most popular applications in Ruby by first identifying their main features, and then showing example Ruby code to replicate this functionality.

    While we understand that it connects us to our friends and people we want to meet up with, what is the common feature of a social network that makes it a social network? And how do these features work? This book is the answer to all these questions. It will provide a step-by-step explanation on how the application is designed and coded, and then how it is deployed to the Heroku cloud platform. This book’s main purpose is to break up popular Internet services such as TinyURL, Twitter, Flickr, and Facebook to understand what makes it tick. Then using Ruby, the book describes how a minimal set of features for these sites can be modeled, built, and deployed on the Internet.

  • Ruby on Rails Web Mashup Projects

    • Packt Publishing
    • April 2008
    Authors: Sau Sheong Chang

    This book shows you how to write web mashups using Ruby on Rails, the new web application development framework. The book has seven real-world projects and each project is described in a methodical step-by-step way, showing how you can write a web mashup from the ground up.

Sau Sheong Chang's Education

National University of Singapore

Graduate Cetificate in International Arbitration, Law


This course provided me with the path to be an accredited international commercial arbitrator in the Singapore International Arbitration Centre, and to be a Fellow of the Singapore Institute of Arbitrators.

University of Derby

LLM, Masters in Commercial Law


This course provided me with important legal education on a broad level. It brought me understanding of legal implications in day-to-day business and commercial operations.

Nanyang Technological University

BASc, Computer Engineering


Sau Sheong Chang's Additional Information


international arbitration,java,ruby, cloud computing

Groups and Associations:

Singapore Java Users Group, Singapore Ruby Brigade, Singapore Institute of Arbitrators, Open Cirrus Technical Working Group, NICF Cloud Computing Technical Committee

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