Bioassay Scientist

The Bioassay Scientist will be responsible for designing, developing, and validating bioassays to support the characterization, release, and stability testing of recombinant proteins, cytokines, and growth factors. This role requires a strong background in cell-based assays, biochemical assays, and a deep understanding of molecular and cellular biology. The ideal candidate will have hands-on experience in assay development, data analysis, and troubleshooting, as well as a passion for advancing biotechnological innovations.

The essential functions include, but are not limited to the following:

• Design, develop, and optimize cell-based and biochemical assays to measure the potency, activity, and functionality of recombinant proteins, cytokines, and growth factors.
• Perform assay validation in compliance with regulatory guidelines (e.g., ICH, USP, FDA) to ensure robustness, reproducibility, and accuracy.
• Analyze and interpret experimental data, prepare detailed reports, and present findings to cross-functional teams.
• Collaborate with R&D, QC, and QA teams to support product development, release testing, and stability studies.
• Troubleshoot and resolve technical issues related to assay performance and instrumentation.
• Maintain accurate and detailed laboratory records in compliance with company policies and regulatory requirements.
• Stay current with advancements in bioassay technologies and contribute to the implementation of innovative methodologies.
• Ensure laboratory safety and compliance with all relevant regulations and standards.

• PhD in Molecular Biology, Cell Biology, Biochemistry, or a related field with 2+ years of relevant experience, or a Master’s degree with 5+ years of experience.
• Proven expertise in developing and validating cell-based assays (e.g., proliferation, apoptosis, reporter gene assays) and biochemical assays (e.g., ELISA, Western blot, enzymatic assays).
• Strong understanding of recombinant protein production, cytokine signaling, and growth factor biology.
• Experience with statistical analysis software (e.g., JMP, Prism) and data interpretation.
• Familiarity with regulatory requirements for bioassay validation (e.g., ICH Q2, USP ).
• Excellent organizational, communication, and problem-solving skills.
• Ability to work independently and collaboratively in a fast-paced, team-oriented environment.

• Experience with high-throughput screening (HTS) and automation technologies.
• Knowledge of cGMP and GLP practices.
• Experience in the biotechnology or pharmaceutical industry.

At Exreprotein, we’re more than a workplace – we’re a growing biotechnology business driven by innovation, passion, and purpose. The products we develop support research in fields such as stem cell research, immunology, cancer research, regenerative medicine, and cellular therapy. Our mission is to deliver comprehensive solutions to expand the horizons of scientific knowledge and improve outcomes in medical research.

We are looking for talented individuals who are results-driven, collaborative, and ready to grow their career. Join our dynamic team where your ideas are valued, your growth is supported, and your contributions help shape the future.

• An employee, to successfully perform the essential functions of this position, requires extended sitting or standing at workstation or at desk.
• The employee should be able to lift 50 pounds, if necessary.
• Reasonable accommodations may be made to enable individuals with disabilities to perform the functions.

This job description in no way states or implies that these are the only duties to be performed by the employee(s) of this position. Employees will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments. All duties and responsibilities are essential functions and requirements and are subject to possible modification to reasonably accommodate individuals with disabilities.