Walid El Azab is an industrial pharmacist, a qualified person and a Lean Six Sigma green belt. He is a technical services manager for STERIS Life Sciences. He provides technical support related to cleaning, disinfectants, sterility assurance and process validation. Finally, he leads audits at manu­facturer sites and workshops to improve processes and inspection readiness level. Walid is a lecturer at a pharmacy and medicine university. He has published different articles and book chapters, and he is also part of working groups on sterilisation and EU GMP Annex 1 guideline revision. He is a plan­ning committee member of the Annual PDA Conference on Pharmaceutical Microbiology (12th and 13th editions), and part of the editorial committee of the PDA Letter. Walid is an observer member of the ISPE Belgium affiliate board. Finally, he is secretary of the Belgium Qualified Person Association.