About
I’m Thierry ASSEF.
An independent freelance professional based in Vienna, Austria.
My background combines international technical and operational experience with asset management, digital systems and project delivery.
I enjoy working between users, operational teams and technical specialists — understanding what people actually need, translating those needs into practical requirements, and helping move projects from discussion to implementation.
Through ASSEF, I bring that experience to organizations looking to improve the way they manage physical assets or deliver operational technology projects.
References to previous organizations relate solely to professional experience and do not imply endorsement, affiliation or commercial partnership.
View career summary
2020 — 2026 · VIENNA
Team Leader — Asset Management Team
International Atomic Energy Agency (IAEA)
Leads the team responsible for asset management and performance monitoring across a global safeguards equipment inventory.
2015 — 2020 · Vienna
Equipment Performance Monitoring Engineer / Product Owner
International Atomic Energy Agency (IAEA)
Owned the requirements and delivery of digital tools supporting equipment reliability and maintenance decision-making.
2008 — 2015 · Vienna
Associate Operations Officer
CTBTO
Managed international radionuclide stations across a global monitoring network.