Research Associate, Research Scientist, Clinical Research

Job Description

Posted Wednesday, June 24, 2026 at 7:00 AM

Xencor is a public, clinical-stage biopharmaceutical company located in the Los Angeles area (Pasadena) and in San Diego. Our focus is developing high-potential XmAb bispecific T-cell engagers and additional engineered drug candidates that leverage our differentiated technology platforms, and we are advancing our pipeline toward clinical proof-of-concept decisions. Our goal is to create high-impact therapeutics for patients with cancer and other serious diseases.

More than 20 XmAb drug candidates engineered with our technology are in clinical development, and three XmAb medicines have been marketed by partners. For more information, please visit  We have an excellent opportunity for a Research Associate 2 in our Bioanalytical Development group to join our team.

This position is on-site at our Pasadena, Ca. location.

Responsible for providing support and contributing to daily laboratory operations, supporting efforts to identify and develop therapeutic antibody candidates using specialized methods specific to the assigned group, function or department.

• Supports the development, qualification, and execution of immunoassays for the detection of anti-drug antibodies (ADA), pharmacokinetics (PK), and biomarkers in preclinical and clinical samples for therapeutic antibody and protein candidates in the areas of oncology, inflammation and autoimmune disease.
• Contributes to research team efforts toward designing and running experiments, analyzing results, and interpreting data
• Documents experimental protocols, designs, and results in a laboratory notebook
• Conducts and troubleshoots various experiments in support of research
• Executes standard operating procedures
• Maintains laboratory inventory, equipment and related supplies
• Utilizes computer programs to collect, analyze, and record data
• Analyzes and reports data, adhering to previously established timelines
• Communicates data to team members
• Contributes content to SOPs presentations and technical reports
• Follows all laboratory safety guidelines, practices and protocols
• Coordinates and collaborates on research-related tasks across multiple groups
• Adheres to all department and company-wide policies regarding conduct, performance and procedures
• Performs other duties as required.

Position minimally requires a High School diploma or GED with at least 6 years related laboratory work experience in an academic or industry setting. A Bachelor’s degree in biological sciences, cell biology, immunology or a related field with at least 3 years’ related laboratory work experience is preferred. A Master’s degree in biological sciences, cell biology, immunology or a related field with 1-2 years’ related laboratory work experience in an academic or industry setting is highly preferred.

Industry experience is also preferred.

• Ability to adapt to changing priorities
• Strong interpersonal skills
• Strong organizational skills and attention to detail
• Ability to work well in a team and independently
• Strong oral and written communication skills
• Ability to work in a fast-paced, goal-oriented multi-project environment
• Ability to understand and follow instructions from supervisors or other team members
• Ability to provide guidance to subordinate roles
• Detail oriented, good documentation practice and strong organizational skills; ability to perform method development with assistance, follow and write basic lab protocols, maintain detailed records and inventory
• Proficiency in MS Office (Word, Excel, Outlook, PowerPoint) and ability to use job relevant software programs like Graph Pad Prism, JMP, Soft Max, MSD Discovery Workbench etc.
• Ability to demonstrate competencies applicable for job based on Xencor’s Leadership Competency Model.

• Technical proficiency and experience developing and running immunoassays and/or bioassays
• Experience in protein quantitation, labelling and conjugation techniques.
• Assist in the development and optimization of ELISA, ECL (MSD), and other ligand-binding assays (LBA) for PK, ADA, and…