We are seeking a creative and energetic Protein Biochemist for our Monrovia location to join our molecular characterization and QC team. The successful candidate will play a key role in implementing protein characterization processes for our pre-clinical antibody variants, and assist in developing new tools for analytical characterization needs.

Hands-on experience with purification of recombinant antibodies/proteins at small to medium scale is a must. Knowledge of molecular biology, protein biochemistry and competence in routine protein analytical characterization tools such as HPLC, FPLC, chromatography, electrophoresis, and spectrophotometry are also required.

  • Experience in characterizing recombinant antibodies/proteins using macromolecule analysis technologies (SPR, DSC/DSF, and accelerated stability studies) is a strong plus.
  • Excellent organizational skills and ability to work well in a team are essential for this position. Creativity, enthusiasm, and strong oral and written communication skills are a bonus.

BS/MS in Biochemistry or Molecular Biology is required.  A proven track record of working in a biotech environment would be a strong plus.




















Xencor Inc. is an innovative biotechnology company located in the Los Angeles area (near Pasadena) and in San Diego.  We recently completed a successful IPO. We use our pioneering XmAb® technology to develop better biotherapeutics – antibodies that target new biological mechanisms and are more potent, safer and longer lasting – to improve patient outcomes and quality of life.

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