Management Team

MAS is led by Mr Chia Der Jiun, our managing director. Find out about our management team and their backgrounds.

Mr Chia Der Jiun

Chia Der Jiun

Managing Director

Mr Chia Der Jiun was appointed Managing Director of the Monetary Authority of Singapore (MAS) on 1 January 2024.  He was previously Permanent Secretary (Development) at the Ministry of Manpower.

Prior to his appointment at MOM in 2020, Der Jiun had spent 18 years at MAS in a range of functions covering monetary policy implementation, reserve management, macroeconomic surveillance, and banking supervision and regulation. At the MAS, he was last Deputy Managing Director (Corporate Development) with responsibilities for risk, finance, payment system and currency operations, HR and organisation transformation. Der Jiun also served as Executive Director for Southeast Asia at the International Monetary Fund from 2011 to 2013. He holds a BA(Hons) in Politics and Economics from Oxford University and an MBA from INSEAD.

Ms Jacqueline Loh

Deputy Managing Director (Corporate Development)

Ms Jacqueline Loh is Deputy Managing Director for Corporate Development in MAS.  She oversees the Organisation & People Development, Technology, and Finance, Risk & Currency Groups.

Prior to this appointment, Ms Loh served as Deputy Managing Director for Markets & Development, and Assistant Managing Director for Policy, Risk and Surveillance.  Ms Loh has also had experience working in MAS’ New York Office, between 1990 and 1994.  Ms Loh joined MAS in 1987, after graduating with a Master of Business Administration from the University of Washington.  She was awarded the Public Administration (Gold) Medal in 2018.

Mr Edward Robinson

Deputy Managing Director (Economic Policy) / Chief Economist

Mr Edward Surendran Robinson is the Deputy Managing Director of the Economic Policy Group, which is responsible for the formulation of MAS' monetary policy and macro prudential surveillance.

Edward has been with the MAS since 1992. He has a particular interest in macro econometric modeling and heads the team responsible for continuing developmental work for the suite of MAS models, which are used for policy analysis. He has also been involved in other areas of economic policy work including in various inter-agency work groups which looked at the structural challenges facing the Singapore economy. He served on the Board of the Singapore Competition Commission between 2005 and 2007. He studied economics and applied econometrics at Monash University and the University of Melbourne.

Mr Leong Sing Chiong

Deputy Managing Director (Markets and Development)

Mr Leong Sing Chiong is the Deputy Managing Director of the Markets and Development Group. He oversees the Markets & Investment, Development & International, as well as the FinTech & Innovation Groups. Prior to this appointment, Mr Leong was the Assistant Managing Director for the Markets and Investment, and Development and International functions. Mr Leong also served as Executive Director of the Financial Centre Development Department (2010-2013), and spent six years with the International Department (2004-2010).

Mr Leong began his MAS career with the Reserves Management Department in 1993 and served as Staff Assistant to the Managing Director from 1997-1998. In 1999, he joined the Monetary Management Division and was appointed Chief Representative of MAS’ London Representative Office from 2002-2004. Mr Leong is a recipient of the Public Administration Medal (Silver). He holds a B.Sc Economics (Monetary Economics) from the London School of Economics.

Ms Ho Hern Shin

Deputy Managing Director (Financial Supervision)

Ms Ho Hern Shin is the Deputy Managing Director in charge of Financial Supervision. She oversees the Banking & Insurance, Capital Markets, and the Policy, Payments & Financial Crime Groups in MAS.

Prior to this appointment, Ms Ho was the Assistant Managing Director for the Banking & Insurance Group.  Ms Ho also served in different functions across MAS, including overseeing policy formulation and supervision of anti-money laundering, technology, cybersecurity, and environmental risks within the financial sector. Ms Ho was also head of HR and Organisational Development for some years in MAS. 


Ms Ho holds a BSc degree in Monetary Economics from the London School of Economics in the UK. She was awarded the Public Administration Medal (Silver) in 2016.

Mr Marcus Lim

Assistant Managing Director (Banking and Insurance)

Mr Marcus Lim is the Assistant Managing Director of the Banking & Insurance Group, overseeing the licensing and supervision of all banks, merchant banks, insurers and finance companies in Singapore.

Mr Lim has served in various functions at MAS, including payments supervision, anti-money laundering, financial centre development, and monetary management.  He has a Master of Arts from Harvard University and a Bachelor of Arts from the University of Chicago.

Mr Lim Tuang Lee

Assistant Managing Director (Capital Markets)

Mr Lim Tuang Lee is the Assistant Managing Director of the Capital Markets Group, overseeing the regulation and supervision of capital markets. The group is responsible for the licensing and supervision of exchanges, clearing houses and capital markets intermediaries.

Prior to this appointment, Mr Lim was the Assistant Managing Director for the Organisation and People Development Group. Mr Lim has also served in various functions, including banking supervision, prudential policy formulation, monetary policy implementation, risk management, as well as strategic planning.

Mr Lim has a Bachelor of Accountancy (First Class Honours) from the Nanyang Technological University and a Master degree in Finance (with specialisation in Risk Management and Financial Engineering) from the Université de Lausanne, Switzerland. Mr Lim was awarded the Public Administration Medal (Silver) in 2017.

Ms Loo Siew Yee

Assistant Managing Director (Policy, Payments and Financial Crime)

Ms Loo Siew Yee is the Assistant Managing Director of the Policy, Payments and Financial Crime Group, overseeing prudential policy, anti-money laundering, enforcement, as well as the supervision of payment services providers. Prior to this appointment, Ms Loo was Executive Director and Head of Banking Department I, which oversees Singapore’s three domestic banking groups and several foreign banks.

Ms Loo has served in different functions in MAS, including heading the Insurance Department and Capital Markets Department. She was also the Director of Corporate Finance, Secretary to the Securities Industry Council, Director of Strategic Development, Lead Policy Analyst and Assistant General Counsel. Concurrent with Ms Loo’s appointment as Director of Strategic Development, she was the Chief Executive Officer of the Institute of Banking and Finance from 2006 to 2008. 

Ms Loo holds an LLB Hons (2nd Upper) from the National University of Singapore and an MBA from the University of Manchester, UK.

Mr Vincent Loy

Assistant Managing Director (Technology)

Mr Vincent Loy is the Assistant Managing Director (Technology) for the Technology Group comprising Data & Technology Architecture (DTA); Information Technology Department (ITD); and Technology & Cyber Risk Supervision Department (TCRD). Prior to this appointment, Vincent heads Accenture Singapore Financial Services. Before Accenture, Vincent was the PwC Leader for Financial Crime and Cyber for Asia Pac and also leads the Financial Services Risk Assurance in Singapore. He specialises in managing large scale transformation and managing risks relating to digital, disruption and Fintech confronting complex global organisations.

Prior to Singapore, Vincent spent more than 20 years in UK as a partner in PwC UK, leading the Financial Services, Technology Risk practice and advised major international financial institutions and regulators in both the UK and US on technology, risk and resilience.

Vincent is a member of the advisory board on National University of Singapore (School of Computing & Business School). Vincent sits on Ministry of Communication panel of experts for cyber security and also serves on the Board of Directors of IHIS (Integrated Health Information Systems and NUS Crystal Centre.

Previously, Vincent was a member of MAS International Advisory Board on Cybersecurity.

Ms Cindy Mok

Assistant Managing Director (Finance, Risk and Currency)

Ms Cindy Mok is the Assistant Managing Director of the Finance, Risk and Currency Group, overseeing the accounting and budget, custody and settlement, investment and portfolio risk, enterprise risk, business continuity, and currency note and coin issuance operations.

Prior to her appointment Ms Mok was Executive Director of the Monetary and Domestic Markets Management Department, which implements monetary policy, maintains stability of SGD financial markets, and develops SGD bond markets. She was also Executive Director of the Organisation Development and Communications Department, which oversees MAS’ corporate communication function, as well as organisation development initiatives to strengthen culture and facilitate transformation.

Ms Celine Sia

Assistant Managing Director (Economics and Knowledge Management)

Ms Celine Sia is the Assistant Managing Director (Economics & Knowledge Management).  She oversees the Economic Analysis Department, Economic Surveillance & Forecasting Department, Macroprudential Surveillance Department and Enterprise Knowledge Department tasked with strengthening knowledge and data management in MAS.

Ms Sia joined MAS in 1993 after completing a Masters in Economics.  She was seconded to the IMF between 2002-2004. Ms Sia was awarded the Public Administration (Silver) Medal in 2018 and the Long Service Medal in 2019.

Ms Gillian Tan

Assistant Managing Director (Development and International)

Gillian Tan is the Assistant Managing Director of the Development and International Group and Chief Sustainability Officer, overseeing the development of Singapore as an international financial centre as well as MAS' sustainability strategies and international relations. 

Prior to this appointment, Ms Tan was Executive Director of the Financial Markets Development Department, which aims to promote a vibrant financial market in Singapore, with a focus on developing the capital market, asset management and insurance sectors as well as green finance capabilities and solutions. From 2016-2019, she served as Executive Director of the Enforcement Department, which is tasked with surveillance and enforcement across the sectors regulated by MAS.


Ms Tan previously worked in the Supreme Court of Singapore as a Justices’ Law Clerk and Assistant Registrar and was subsequently appointed as a District Judge of the State Courts of Singapore. She also served as a Deputy Public Prosecutor and Deputy Senior State Counsel in the Attorney-General’s Chambers for a number of years.


Ms Tan graduated from Cambridge University with a First Class Honours in Law. She also holds a Master of Laws from Harvard Law School. She was awarded the Public Administration Medal (Silver) in 2018.

Mr Bernard Wee

Assistant Managing Director (Markets and Investment)

Mr Bernard Wee is the Assistant Managing Director of the Markets and Investment Group. He oversees the investment of Singapore’s official foreign reserves, implementation of Singapore’s exchange rate-centered monetary policy, stability of Singapore dollar money markets as well as issuance of Singapore government securities.

Prior to this appointment, Mr Wee oversaw the Finance, Risk and Currency Group. Mr Wee also served as the Executive Director of the Prudential Policy Department, which sets regulatory policies for banks. Mr Wee joined MAS in 2004, and also served in international, monetary policy operations, fintech and financial market development. He earned a Bachelor of the Arts and Master of Public Administration from Columbia University.

Mr Wong Zeng Yi

Assistant Managing Director (Organisation and People Development)

Mr Wong Zeng Yi is the Assistant Managing Director of the Organisation and People Development Group. He oversees the Organisation Development and Communications, Corporate Services, People Development and Legal Departments, as well as the MAS Academy. The Group synergises MAS’ efforts in transforming the organisation. 

Mr Wong previously headed Banking Department II that oversees foreign banks and finance companies, and houses the Financial Risk Specialist Division that undertakes technical supervision and risk surveillance. He also served in different functions in MAS, including financial centre development, international and supervision of capital market entities. 

Mr Wong holds a Master of Public Administration from Columbia University, a Master in Public Policy from the National University of Singapore, and a Master of Philosophy in Finance from Cambridge University. He also graduated from the University of Pennsylvania with a dual degree in Economics.