Dato' Seri Hj. Rosli Bin Isa has an extensive and distinguished career in the Malaysian civil service spanning over 30 years. He began his career as an Assistant Director of Administrative and Diplomatic Office in the Implementation Coordination Unit of the Prime Minister's Department (ICU of JPM) in 1995. Throughout his tenure in the public sector, he has held various senior leadership positions across multiple ministries and departments, including:
- Secretary General, Ministry of Energy and Natural Resources 
- Secretary General, Ministry of Natural Resources, Environment and Climate Change 
- State Secretary of Penang
- Director, Selangor State Development, ICU JPM
- Director General, Road Safety Department

Prior to his retirement in August 2025, he served as the Federal Secretary of Sabah.

Dato' Seri Hj. Rosli Bin Isa also has significant experience in corporate governance, having served as a Board Director and Chairman for numerous organisations and statutory bodies. These include the Sustainable Energy Development Authority (SEDA), Pengurusan Aset Air Berhad (PAAB), Malaysia Petroleum Resources Corporation (MPRC), Malaysia-Thailand Joint Authority Petroleum, Penang Water Authority, Penang Port Authority, Penang Development Corporation and the Forest Research Institute Malaysia (FRIM) and My Power Agency, where he served as Chairman from 2021 to 2024.

Dato' Seri Hj. Rosli Bin Isa currently serves as the Chairman of Asia Baru Construction Sdn Bhd, following his appointment on 1 January 2026.

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