(Senior) Scientist

Scientist/Senior Scientist with Experience within Preparative HPLC Purification of Peptides

We are looking for a new colleague to join Analytical Development Laboratory, in API R&D function of Xellia Pharmaceuticals ApS, where you will play a key role in developing robust processes for the manufacture of life-saving antibiotics.

API R&D is organized in three departments (Upstream Development, Downstream Development, and Analytical Development), with employees located at our R&D Center of Excellence in Oslo and at production sites in Copenhagen and Budapest, with a total of about 50 employees.

Analytical Development Laboratory is currently comprised of 13 highly skilled employees and is organized in two units located at our R&D Center of Excellence in Oslo and at our production site in Copenhagen. The current vacant position is Analytical Development Laboratory at our site in Copenhagen.

Analytical Development Laboratory is responsible for development and validation of analytical methods. The department utilizes a variety of analytical techniques including Preparative HPLPs, TGA/DSC, HPLC/UHPLC, LC-MS/MS, 2D-LC-MS and GC-FID. Additionally, the department performs isolation and characterization of isolated impurities in connection with production and registration of existing and new Active Pharmaceutical Ingredients (APIs) and Finished Dosage Forms (FDFs).

As a team member in Analytical Development Laboratory, your responsibility will be isolation and characterization of impurities from production or investigative projects and you will be working closely together a highly skilled team of Scientists and Laboratory Technicians within R&D, production, QC-laboratories, and Regulatory Affairs.

Responsibilities and qualifications

Main Responsibilities

• Identify, purity and characterize fermentation and degradation impurities from existing and new products
• Optimize laboratory scale experiment and elucidate mechanisms of formation
• Evaluate and report data ensuring traceability and documentation of results in accordance with GLP and/or GMP
• Certify Impurity Standards according to pharmacopeial guidelines
• Plan, design and evaluate experiments performed in close collaboration with other scientists and laboratory technicians.
• Providing support to Regulatory Affairs and Quality functions during inspections and in connection with product filings etc.

Qualifications

• M.Sc. or Ph.D. in organic chemistry or related field with intricate theoretical knowledge of and practical experience with molecules, molecular interactions and elucidation of reaction mechanisms.
• Experience with preparative HPLC, preferable of peptide purifications. You will be expected to perform most of the practical development work hands-on in our laboratory, there practical preparative HPLC experience is an absolute requirement.
• GLP/GMP as well as method validation experience and knowledge of Pharmacopeias and relevant guidelines from the pharmaceutical industry is not a must, however they will be considered advantages.
• Strong collaboration skills
• Experience in structure elucidation using NMR and LC-MS or solid phase characterization using TGA/DSC and other related techniques is considered an advantage but is not mandatory.

You will be working as part of a team supporting laboratory technicians and when required, manage your own projects. Therefore, it is essential that you are an excellent collaborator who can contribute to multi-disciplinary projects, but also a scientist able to independently drive projects forward.

Xellia offers:

• A position in an international company and a possibility to work with people from different countries and cultures
• The chance to be a member of a highly skilled team of scientists and technical personnel located in different countries
• A supporting environment for personal and professional development
• A competitive salary with a bonus plan
• Pension scheme including health insurance

Contact info and deadline:

For further information on the job, please contact: Manager Analytical Development Jacob Krall, jacob.krall@xellia.com, +45 4193 3773.

Please send us your application no later than June 11th 2026. We continuously review applications and amy invite candidates for interviews, and we will hire once we have found the right candidate.

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