Mazwan has over 30 years of working experience in undertaking major turnkey projects involving oil & gas development, high speed railways, steel processing plant and major infrastructural projects. He has extensive knowledge in project planning and scheduling specifically in the schedule management area including setting-up project planning system, management & control during project execution and schedule contingency quantifications through schedule risk management. At PETRONAS, he is responsible in ensuring technical compliance in project planning, provides advisory and consultancy services to projects as well as contributes to the talent and competency development by the introduction of best practices through the development and enhancement of project control procedures and guidelines.