Senior Protein Purification Scientist for Biologics

Biopatrika; Union City (CA); Hybrid; USD 85,000 - 110,000; Full time

Job summary

Celltheon Corporation is seeking an experienced Senior Research Associate / Research Associate– Protein Purification to join our downstream process development team. This hands-on laboratory position focuses on developing, optimizing, and scaling purification processes for recombinant proteins and antibodies.

You will design purification workflows (Protein A, CEX/AEX, HIC, IMAC, SEC), perform TFF, operate AKTA FPLC, and analyze data to drive process improvements.

Qualifications

• Bachelor’s or Master’s degree in a life sciences field.
• 2–3 years of industry protein purification experience.
• Hands-on AKTA FPLC operation.
• Experience with TFF systems.
• Experience with SEC and ion-exchange chromatography.
• Strong troubleshooting and documentation skills.

Responsibilities

• Develop and optimize protein purification workflows (Protein A, CEX/AEX, HIC, IMAC, SEC).
• Operate AKTA FPLC systems and troubleshoot as needed.
• Perform tangential flow filtration for concentration and buffer exchange.
• Prepare buffers, chromatography columns, reagents, and lab solutions; document experiments.
• Collaborate with cross-functional teams across biology, development and analytics.
• Maintain safety and quality procedures in the lab.

Skills

Protein purification

AKTA FPLC

TFF systems

HPLC/SEC

SOPs & ELN

Team collaboration

Education

Bachelor’s/Master in Life Sciences

Tools

Unicorn software

Job description

Celltheon Corporation is seeking an experienced Senior Research Associate / Research Associate– Protein Purification to join our downstream process development team. This hands-on laboratory position focuses on developing, optimizing, and scaling purification processes for recombinant proteins and antibodies.

You will design purification workflows (Protein A, CEX/AEX, HIC, IMAC, SEC), perform TFF, operate AKTA FPLC, and analyze data to drive process improvements.