Senior Scientist, Purification  |  Just. – Seattle, WA

Just is seeking a motivated and creative scientist or engineer who desires a significant opportunity to improve worldwide access to biotherapeutics.  The new scientist/engineer will join a fast-paced, collaborative, and multidisciplinary team to develop purification processes for low-cost biotherapeutic manufacturing.  The successful candidate will have experience in chromatography and filtration theory and operations, as well as expertise in commercial process development, process characterization and process validation. Experience with high throughput chromatography screening, multicolumn chromatography and/or continuous processing is a plus. The ideal candidate has strong written and verbal communications skills, works well independently and in teams, and constantly looks for ways to improve processes and technology. 


  • Develop purification processes for early and late stage biotherapeutics manufacturing
  • Transfer processes to clinical and commercial manufacturing facilities
  • Technology development to reduce the cost and improve the efficiency of purification processes

Required qualifications: 

  • B.S., M.S. or Ph.D. degree in Engineering, Biochemistry or related field with a minimum 2 years experience with Ph.D., 5 years experience with Master’s degree, or 7 years of relative experience with Bachelor’s degree.
  • Expertise in chromatography and filtration theory, general downstream development, scale-down and scale-up strategies, and viral clearance
  • Significant experience with design of experiments (DOE) and analysis using statistical software packages (JMP, MATLAB, etc.)
  • Experience with commercial process development, process characterization and process validation
  • Experience with process transfer to clinical and commercial facilities
  • Experience with early & late stage regulatory filings 

Preferred qualifications:

  • Experience with high throughput chromatography screening
  • Experience with multi column chromatography and/or continuous processing
  • Experience with process modeling and chromatography mechanistic modeling  

About Just – Evotec Biologics

Just – Evotec Biologics, wholly-owned by Evotec SE, is a unique platform company that integrates the design, engineering, development, and manufacture of biologics. With deep experience in the fields of protein, process and manufacturing sciences, the Just team came together to solve the scientific and technical hurdles that block access to life-changing protein therapeutics; from the design of therapeutic molecules to the design of the manufacturing plants used to produce them. Just’s focus is to create access and value for a global market through scientific and technological innovation. Our state-of-the-art labs and cGMP clinical manufacturing plant are co-located in Seattle’s South Lake Union neighborhood – the center of Seattle’s medical, global health, and technology industries and a noted top emerging life science hub in the U.S. Our fast-growing team of 100 employees is expanding Just’s innovative platform and footprint – building our first North American J.POD® commercial manufacturing facility in the Seattle area. For job opportunities, learn more at


apply for this position:

please send resume and cover letter