About our client Our client is a leading independent, international non-profit clinical research organization in oncology situated in Brussels.About the RoleAre you looking for a role where your clinical administrative skills actually drive the science forward?We are looking for a proactive, energetic Clinical Operations Assistant (COA) to join our team.This is not a traditional, purely back-office CTA role.Our COAs are the administrative backbone of our trials, combining meticulous documentation with high-energy, proactive site engagement. If you are comfortable picking up the phone to solve problems and love collaborating across diverse teams, we want to hear from you!What You Will DoSite Activation & Support: Collect, process, and file country- and site-specific documents required for regulatory submissions and site activation.Proactive Site Engagement: Actively follow up with clinical sites. Instead of sending repeated emails, you will pick up the phone to unblock delays and manage difficult conversations with site staff.Systems & Documentation: Maintain and update the Trial Master File (TMF), Clinical Trial Management System (CTMS), and other study tracking tools.Study Lifecycle Support: Assist with sample and IMP kit reconciliation, resolve queries, and support preparations for monitoring visits and audits.Process Improvement: Participate in expert task forces to optimize internal departmental workflows.What We Are Looking ForEducation: Bachelor’s or Master’s degree, preferably in Life Sciences (Biomedical, Pharmaceutical, etc.).Experience: Ideally 1–2 years of professional experience in a scientific or clinical environment. Highly motivated biomedical graduates or career changers with strong adaptability and maturity are also welcome to apply!Mindset: Proactive, independent, and communicative. You are someone who takes initiative rather than just executing tactical tasks.Skills: Excellent organization, ability to prioritize across competing tasks, and meticulous attention to detail.Languages: Excellent written and spoken English (our official working language).Compliance: Good Clinical Practice (GCP) certification is a strong asset.What We OfferFlexibility & Work-Life Balance: High-trust culture with up to 4 days of remote work (WFH) per week and flexible office hours (typically 09:00–17:00).Team Culture: Join a highly collaborative, supportive team of ~40 colleagues. We meet in person once a month for a team day and optional lunch.Career Progression: Real growth paths.