Sebastien joined International SOS in 2015 as Branch Manager for MedAire, the Aviation and Maritime division. In this role, he was responsible for scaling the Middle East and Africa business, strengthening operational delivery, and expanding partnerships across aviation, energy, and remote‑site sectors. During the COVID‑19 pandemic, he led the development and implementation of a first‑of‑its‑kind digital travel pass in partnership with an Abu Dhabi‑based airline, supporting safer cross‑border mobility during a period of global disruption.

In 2021, Sebastien was appointed General Manager for the GCC, assuming leadership of both commercial and operational functions. In 2023, his mandate was expanded to cover the entire Middle East, with a particular focus on advancing International SOS’ health and security travel risk management solutions and reinforcing its position as a trusted advisor on duty of care, crisis preparedness, and resilience.