Scientist

Scientist R&D Scientist for Laboratory-Scale Preparative HPLC Impurity Isolation Join Xellia Pharmaceuticals and help develop life-saving antibiotics. We are looking for a Scientist or Senior Scientist to join our Analytical Development Laboratory in Copenhagen. In this role, you will lead the isolation, purification, and characterization of impurities from antibiotic production processes, supporting the development and registration of existing and new pharmaceutical products. You will become part of an international Analytical Development team of 11 skilled colleagues based in Copenhagen and Oslo. The department develops and validates analytical methods and applies techniques such as HPLC/UHPLC, LC-MS/MS, 2D-LC-MS, GC-FID, TGA/DSC, and Preparative HPLC. Your responsibilities

• Isolate, purify, and characterize fermentation- and degradation-related impurities from APIs and finished products
• Develop and optimize laboratory-scale purification processes using Preparative HPLC
• Investigate impurity formation mechanisms and support problem-solving activities
• Analyze, evaluate, and document results in accordance with GLP/GMP requirements
• Certify impurity Reference Standards according to pharmacopeial guidelines
• Collaborate closely with R&D, Production, QC, Quality, and Regulatory Affairs
• Support inspections, product registrations, and technical investigations

Your profile

• M.Sc. or Ph.D. in Organic Chemistry, Pharmaceutical Sciences, or a related field
• Hands-on experience with Preparative HPLC is essential; peptide purification experience is an advantage
• Strong understanding of organic chemistry, molecular interactions, and reaction mechanisms
• Experience with NMR, LC-MS/MS, and structure elucidation is an advantage
• Knowledge of GMP/GLP, method validation, and pharmacopeial requirements is beneficial
• Able to work independently while thriving in a collaborative, cross-functional environment

What we offer

• A meaningful role contributing to the development of life-saving antibiotics
• An international and collaborative work environment
• Opportunities for professional and personal development
• Collaboration with highly skilled scientists across multiple locations
• Competitive salary, bonus scheme, pension, and health insurance

Interested? Please submit your application in english no later than 31st October. For more information, please contact: Jacob Krall, Manager Analytical Development jacob.krall@xellia.com or +45 4193 3771. Xellia Pharmaceuticals is the global leader in fermentation-based, non-beta-lactam anti-infectives, supplying Active Pharmaceutical Ingredients (APIs) and Finished Dosage Forms (FDFs) to over 500 pharmaceutical companies across 80 countries. Recognized by the World Health Organization and the European Union for our critical medicines, we play a vital role in combating severe infections and antimicrobial resistance. Headquartered in Denmark, we operate manufacturing sites in Copenhagen, Denmark; Budapest, Hungary; and Taizhou, China, with R&D and commercial operations in seven additional locations globally. As the only European manufacturer of several key anti-infectives and with a heritage spanning over 120 years, we are driven by purpose and progress. With more than 1100 employees, our impact starts from within. We offer a workplace where ideas, curiosity, and initiative thrive, and where your role evolves with your ambition. Instead of rigid structures, we provide real responsibility, freedom to explore, and support to grow. Together, we shape not only the future of our company and the development of our people, but also the health of communities worldwide. Further information about Xellia can be found at: www.xellia.com Connect with us on LinkedIn