Our leadership

Bruno Lopez is President and Group Chief Executive Officer of STTGDC. He has led the company since its inception in 2014, setting the Group’s strategic direction and driving its growth and development. 
 

Under his leadership, STTGDC has grown from its Singapore roots into a global digital infrastructure platform comprising more than 110 data centres and 2.7GW of capacity across its portfolio in Asia and Europe. The company supports leading cloud service providers and enterprises, including through VIRTUS Data Centres in the UK, Germany and Italy. 
 

Bruno oversees the strategic and operational priorities of STTGDC across its global portfolio. His leadership has been instrumental in scaling the business internationally, establishing market leadership positions in key economies, and shaping STTGDC into a globally recognised digital infrastructure platform.
 

With more than 30 years of experience in telecommunications and data centres, Bruno is widely recognised for his leadership and contribution to the development of the digital infrastructure industry. He has received numerous industry accolades recognising his expertise, leadership and commitment to advancing the sector.

Prior to STTGDC, Bruno was Chief Executive Officer and Executive Director of Keppel Data Centres. He also established the Securus Data Property Fund, a pioneering data centre investment platform with assets across Asia-Pacific, Europe and the Middle East. The fund was subsequently merged with Keppel Data Centres' assets as part of the company's SGX-listed REIT.
 

Bruno holds a Bachelor of Arts degree with Honours from the National University of Singapore and a Master’s degree from Rutgers University, USA.

Nelson Lim is Group Chief Financial Officer of STTGDC. He leads the Group’s financial strategy and management, with oversight of financial planning, treasury, procurement and risk.

As STTGDC continues to scale, Nelson Lim plays a key role in strengthening the Group’s financial foundations, supporting disciplined capital allocation, robust governance and sustainable long-term growth. His leadership helps ensure that the business has the financial capacity and resilience to pursue growth opportunities and respond to evolving customer demand.

Prior to STTGDC, Nelson spent 17 years with Dell in various leadership roles across Singapore, the United States, regional and global operations. His last appointment was Finance Executive Director, Dell Global. During his tenure, he oversaw financial controllership and investment strategy, as well as organisation restructuring and transformation. Prior to Dell, Nelson held financial and business leadership positions at Hewlett Packard and KPMG.

Nelson holds a degree in Accountancy from Nanyang Technological University, Singapore and is a certified Chartered Accountant.

Lionel Yeo is Chief Executive Officer, Southeast Asia at STTGDC. He is leads the Group’s business across Southeast Asia, with responsibility for its strategic direction, growth and performance. He also oversees commercial strategy and product development within the region.

Since assuming his current role, Lionel Yeo has led STTGDC’s continued expansion across Southeast Asia, working with customers, partners and local teams to support growing demand for cloud, AI and digital infrastructure. His experience spans investment, operations, asset management, product development and strategy across the data centre industry.

Before his current appointment, Lionel was Vice President, Corporate Development and Investments at STTGDC, where he led new-market investments, operational establishment, and Group strategy. Prior to that, he was General Manager for STT Singapore 5, where he led the operational transition of the data centre business following its acquisition through a joint venture.

Lionel has held various leadership roles across investment, operations, asset management, product and strategy in the data centre industry. Prior to joining STTGDC, he was Vice President, Investments at Keppel where he led and managed the development of data centre assets across Singapore and Australia.

Lionel holds an Executive MBA from UCLA-NUS and Bachelor of Accountancy with Nanyang Technological University, Singapore. 

Thomas Ee is Group Chief Operating Officer of STTGDC. He works across the Group to translate strategy into execution, align business priorities and strengthen the organisational capabilities needed to support disciplined growth and consistent execution across its markets. He also provides leadership oversight for STTGDC’s Northeast Asia markets and data centre assets. 

From May 2025 to February 2026, Thomas served concurrently as Interim Chief Executive Officer of VIRTUS Data Centres.

Thomas brings a wealth of experience. Before joining STTGDC, Thomas held board and senior management positions in telecommunications and data centre businesses managed by Macquarie Asset Management across Asia-Pacific. 

In Taiwan, he served as Chief Executive Officer of Taiwan Broadband Communications (which was listed in Singapore in 2013) and subsequently as Executive Chairman. During his tenure, he successfully transformed various lines of businesses and operations across different regions into an integrated enterprise. Earlier in his career, Thomas Ee spent a decade with StarHub from 1997, where his last position was Senior Vice President, Cable, Fixed and IP Services.

Thomas holds a bachelor’s degree in Electrical and Electronic Engineering and a master’s degree in Mechanical Engineering from Nanyang Technological University, Singapore.
 

Dato' Praba Thiagarajah, Founder and Executive Chairman of Basis Bay, is an esteemed technologist with deep roots in the IT sector, spanning 27 years. He boasts an academic foundation with degrees from the University of Malaya and the University of Oxford, alongside business qualifications from Heriot-Watt University. At IBM and NEC, he gained substantial experience before founding Basis Bay in 1996, which now serves over 300 clients, primarily in the financial sector.

Under his leadership, Basis Bay set up Asia’s first Green Data Centre in 2009, championing sustainable cloud and IT infrastructure services that have spanned 50 locations in 25 countries. A celebrated speaker and professor, Dato' Praba's numerous accolades underscore his commitment to Clean IT and anti-corruption, reflecting his belief in ethical governance and technological responsibility.