Sezgin Ozbilgin

Head of Delay Expert Services - Asia

Sezgin is a testifying delay expert with 17 years of experience in the construction industry, working on a wide range of complex building and infrastructure projects. His expertise lies in on-site practice, specialising in implementing various project control techniques to ensure effective change management on large-scale construction projects and preparing and managing multiple schedules for simultaneous projects.

In his consulting role, Sezgin has provided service to project owners, main contractors, and subcontractors concerning mediation, arbitration and litigation matters across both public and private sectors. He has dealt with diverse delay-related issues in major capital projects, including oil and gas, power, greenfield urban development, subsea pipelines, mining, wastewater processing, utilities infrastructure, solar farms, and transportation infrastructure, and commercial, residential, and technical building projects.

Sezgin’s professional experience extends internationally, including Australia, China, Hong Kong, Macau, Malaysia, Vietnam, Singapore, India, Turkmenistan, Kazakhstan, Turkey, Oman, Qatar, Saudi Arabia, and Romania.

Sezgin is recognised by Who’s Who Legal as a Future Leader in Construction Delay and Quantum in 2018, 2019, 2020, and 2021; a Global Leader in Construction Expert Witnesses in 2022; and a National Leader in Southeast Asia Construction Expert Witnesses in 2022.

WWL says: “Sezgin Ozbilgin impresses market sources with his top-notch technical expertise and persuasive and methodical testimony. Peers further enthuse that his service is second to none”.


BSc in Civil Engineering
MSc in Transportation Engineering

Professional Memberships

Society of Construction Law (Singapore)
Singapore Contractor’s Association
More CCi Consultants
Based in Houston
Based in Manchester
Based in London
Delay, Quantum and Technical
Based in Pittsburgh