Scientist​/Senior Scientist, Pharmaceutical Sciences

Vivtex develops better and safer oral therapeutics through continuous innovation using advanced gastrointestinal tissue high throughput assays, formulation techniques, and computational models. The company originated based on a groundbreaking GI tissue screening technology from MIT invented by Robert Langer, Giovanni Traverso, and Thomas von Erlach. Through strategic partnerships with major global pharmaceutical and leading biotechnology companies, Vivtex has managed to advance multiple new oral therapeutics towards the clinic with drastically shorter development times and better oral exposure compared to the existing state of the art.

Vivtex is determined to continuously expand its technology platform to further accelerate the creation of best-in-class next generation oral drugs. The company has a rapidly growing team and research sites in both Boston, MA and Zurich, Switzerland.

We are seeking a Scientist / Senior Scientist to play a central role in advancing Vivtex’s drug delivery platform.

The ideal candidate is a hands‑on experimentalist who can operate effectively at the bench while contributing to operational and strategic decision‑making across programs.

You will work at the interface of formulation, bioanalysis, and in vivo pharmacokinetics, collaborating cross‑functionally to drive programs from early discovery through preclinical evaluation.

Bioanalysis & Analytical Integration

• Develop and apply LC‑MS/MS methods to support formulation screening and PK studies
• Execute and optimize sample preparation workflows
• Interpret analytical data to guide formulation optimization and decision‑making
• Design and/or coordinate in vivo PK studies
• Interface with external partners and CROs for PK studies and analytical work streams
• Design, develop, and optimize oral formulations, in vitro
• Translate screening outputs into robust, scalable formulations suitable for in vivo and preclinical development
• Evaluate and rationally select excipients and formulation strategies to enhance permeability, stability, and bioavailability

• PhD in Chemistry or Pharmaceutical Sciences
• 1–3 years of relevant industry experience
• Hands‑on experience with LC‑MS method development, sample preparation, and quantitative analysis
• Strong experimental design, data analysis, and problem‑solving skills
• Experience with overseeing and executing PK studies, including bioanalysis
• Experience working with or managing CROs
• Excellent communication and organizational skills
• Experience in a fast‑paced biotech environment
• Proven capability to communicate complex technical concepts, demonstrated by a history of publishing in recognized industry journals.

• Experience in oral peptide or complex molecule delivery
• Prior experience leading small teams or mentoring junior scientists
• Exposure to computational approaches, data science, or AI/ML‑driven analysis
• Background in oral formulation development, with a solid foundation in chemistry
• Demonstrated ability to work across disciplines and contribute to cross‑functional teams

• A scientist who can translate concepts into prototypes
• Someone who operates effectively at both a tactical (lab execution) and strategic (program‑level thinking) level
• A collaborative team player who is excited working across functions and disciplines
• A candidate who takes ownership and drives progress in a dynamic environment

This position is based in Schlieren (Zurich), Switzerland, with an expectation of regular onsite presence and flexibility for occasional remote work.