Shape the future of bioanalysis for innovative medicines   Celerion is a leading global contract research organization (CRO) specializing in early clinical research and bioanalytical services. For more than 40 years, we have partnered with pharmaceutical and biotechnology companies worldwide to accelerate the development of new therapies and bring life-changing medicines to patients faster. To support the continued growth of our Bioanalytical Laboratory in Fehraltorf (Zurich area), Switzerland, we are looking for a motivated and scientifically driven professional to join our Ligand Binding Services (LBS) team as a:   (Senior) Bioanalytical Principal Investigator LBS / GLP Study Director (100%)   In this role, you will take scientific and operational ownership of regulated bioanalytical studies and method validations. You will serve as the primary client contact, lead study execution from planning through reporting, and play a key role in delivering high-quality data to support drug development programs worldwide. YOUR RESPONSIBILITIES Study Leadership & Scientific Oversight Lead and oversee GLP/GxP-compliant bioanalytical studies and method validations within the Ligand Binding Services (LBS) department. Act as Study Director and/or Principal Investigator with full responsibility for assigned studies or study phases. Develop and approve study plans, validation protocols, analytical reports and associated study documentation. Review, evaluate and approve analytical data to ensure scientific integrity and regulatory compliance. Ensure all study activities are conducted in accordance with applicable SOPs, regulatory requirements and client expectations. Client Management Serve as the primary scientific and operational contact for assigned clients. Provide regular project updates and maintain strong communication throughout the study lifecycle. Support client meetings, scientific discussions and audits as required. Operational Excellence Coordinate laboratory activities and ensure efficient study execution. Train, mentor and support assigned laboratory personnel. Contribute to process improvements and continuous enhancement of laboratory operations and quality standards. Support bioanalytical data management activities and documentation review processes. Additional Responsibilities for Senior-Level Candidates Lead complex or strategic client programs. Provide scientific mentoring and guidance to junior Principal Investigators and laboratory staff. Act as a subject matter expert for ligand-binding and cell-based assay technologies. Contribute to business development activities, client presentations and scientific initiatives. YOUR PROFILE Required Qualifications * Degree in Biochemistry, Biology, Chemistry or a related scientific discipline; PhD is advantageous. * Minimum 2 years of experience in bioanalysis or quantitative analytical sciences. * Hands-on experience with ligand-binding assays and/or cell-based assays. * Experience working in a regulated environment (GLP, GCP, GMP and/or ISO standards). * Strong analytical thinking and problem-solving skills. * Excellent written and verbal communication skills in English. * Ability to manage multiple projects while maintaining a high level of quality and attention to detail.   Preferred Qualifications * Previous experience as a Study Director, Principal Investigator or equivalent scientific leadership role. * Knowledge of biomarker, pharmacokinetic (PK), immunogenicity (ADA) or biologics bioanalysis. * Good German language skills. * Experience working directly with pharmaceutical or biotechnology clients. WHAT WE OFFER * The opportunity to lead scientifically challenging projects for global pharmaceutical and biotech clients. * Exposure to innovative biologics, biomarkers and emerging therapeutic modalities. * A collaborative, international and science-driven working environment. * Structured onboarding and continuous professional development opportunities. * Modern laboratories and state-of-the-art infrastructure. * Flexible working hours and attractive employment conditions. * The opportunity to grow your career within a globally recognized CRO. * A workplace located near Zurich with easy access to excellent public transportation and recreational opportunities.   Why Join Celerion? At Celerion, you will contribute directly to the development of new medicines while working alongside highly skilled scientists in a dynamic and supportive environment. We value scientific excellence, teamwork, integrity and innovation, and we are committed to helping our employees grow and succeed. Celerion is an equal opportunity employer. We welcome applications from candidates of all backgrounds and are committed to fostering an inclusive and diverse workplace.   Interested? We look forward to receiving your application. Join us in advancing the development of tomorrow's medicines.