Your mission As a Research Associate in our Cell Culture team, you will contribute to recombinant protein expression across multiple expression systems. Depending on your background and interests, you will work in one or more of our core platforms: insect cells, mammalian cells, bacterial cells, or yeast. Your responsibilities include: Expression of recombinant proteins using classic and high‑throughput cell culture techniques Cultivation and handling of diverse expression systems (e.g., insect cells, mammalian cells, E. coli, yeast) Performing small- and large‑scale expression experiments, screenings, or fermentation processes (bacterial or yeast) Conducting cell biology workflows, such as transformation/transfection, plasmid DNA preparation, and baculovirus amplification Executing protein analyses using a broad range of biochemical and biophysical methods Accurate documentation of all experimental steps according to internal guidelines and customer requirements Collaborating in multidisciplinary project teams in an industrial drug discovery environment Your profile You are someone who enjoys hands‑on work in a dynamic, collaborative environment. Beyond your technical skills, you bring curiosity, ownership, and a strong sense of responsibility into the lab, ideally along with experience in one or more of our key expression systems. Successfully completed training as CTA/MTA/BTA, chemistry/biology laboratory assistant, or a degree in life sciences ( no doctorate ) Hands ‑ on experience in cell culture with at least one of the following systems: insect, mammalian, bacterial, or yeast. A structured, careful, and quality‑oriented way of working, even when handling multiple tasks simultaneously High motivation, curiosity, and enjoyment of innovative and challenging tasks Ability to work effectively in a team, strong communication skills, and interest in learning new methods Experience with data maintenance and evaluation, ideally using LIMS systems Good MS Office skills as well as English and German language skills Strong organizational skills, particularly in managing laboratory projects Why us? An innovative professional field in an exciting industry An inspiring working environment that supports your further development Comprehensive onboarding that prepares you thoroughly for your role Multicultural teams and an open company culture A competitive salary Contact Details Proteros biostructures GmbH People Team Bunsenstr. 7a, 82152 Martinsried 49 89 700761-0 joinus@proteros.de About us Proteros is a privately held early-stage services provider in structure-based drug discovery with a cutting-edge discovery engine tailored to unlock even the most technically challenging targets. Proteros’ work is built on scientific excellence and supports its clients to reach the right results and accelerate their overall research timelines. Proteros supports most of the world’s 20 largest pharma companies and more than 250 pharmaceutical and biotech partners in the US, Europe and Japan.