Meet Our Team


TTS Group employs over 100 administrative technical and professional staff in Singapore Vietnam and Australia.


Our core management team is made up of shareholding directors and senior managers who each have fundamental roles in business operations and project delivery across the group.  

Marko Mrsic

Founding Director & Chairman


Marko initially established TTS Group in the Singapore market in 2010 and has over 25 years of professional experience as a qualified traffic engineer. He has led the delivery of many significant traffic and transportation projects worldwide, including Australia, Europe, Middle East and Asia.

Based in our Brisbane office, Marko is heavily involved in providing transport advisory services to various major projects including state and local government agencies underpinned by his expertise in construction traffic management, traffic design and road safety. 

As the company Chairman and Technical Director Marko has a strategic role in all of our business operations at a board and project level.

Kelvin Foo

Managing Director


Kelvin is one of SE Asia’s most highly regarded traffic and transport engineers, with over 20 years of international consulting experience. He has a BEng (Hons) from NUS and a MSc Transport from Imperial College, UK. He is involved in managing and leading high profile projects spanning all aspects transport planning and engineering locally and abroad.


Kelvin’s reputation is further cemented by his glorious wins in Vietnam's Dragon Award, Singapore's Promising SME 500 and as Honoree of the Spirit of Enterprise he is often invited to appear on public media throughout SE Asia. Kelvin is also actively involved in various industry forums, events and organisations throughout the region.

You Jin Tan

Director, SE Asia


You Jin has been with TTS Group since 2010 and has 15 years’ experience in traffic engineering and transport planning. Over the last 10 years he has managed and completed more than 100 large-scale projects as Team Leader, Project Manager and Project Director in Singapore, Vietnam Myanmar and Australia.


As a shareholding Director he plays an integral role in business development and client relations, and assists with the overall technical excellence and oversight of project quality and delivery. You Jin is also the head of our transport modelling capabilities and leads our Aimsun software distribution arrangements.

Malcolm Soh

Manager, Consulting


Malcolm has 10 years’ experience as a consultant in the transport planning sector. He has been involved in leading a range of projects from data collection and traffic surveys to transport planning studies. With this experience he is responsible for overseeing our consulting activities in Singapore and Vietnam.


Malcolm is a member of the Chartered Institute of Logistics and Transport and Intelligent Transportation Systems and regularly attends conferences technical forums and seminars keeping abreast of current technologies and professional advancements. He was also invited to the Hanoi University of Transport and Communications as guest speaker for “Future Sustainable Transport and Resilient Cities”.