Research Associate​/Senior Research Associate, Cell Science

Syst Immune is a leading and well‑funded clinical‑stage biopharmaceutical company located in Redmond, WA and Princeton, NJ, specializing in innovative cancer treatments through bi‑specific, multi‑specific antibodies, and antibody‑drug conjugates (ADCs). The company has multiple assets in various stages of clinical trials for solid tumor and hematologic indications, and a robust preclinical pipeline for potential cancer therapeutics. The role offers an opportunity to learn and grow while contributing to the company’s success.

We are seeking a Research Associate or Senior Research Associate – Cell Science to support cell line development through hands‑on cell biology, CHO cell line development, and functional assay execution. The role is lab‑based and requires deep experience with CHO cell culture and mammalian expression systems.

This role requires full‑time onsite presence in our Redmond, WA office, with a planned relocation to our new Bothell, WA facility in fall 2026.

• Maintain mammalian cell cultures
• Generate and maintain stable CHO cell lines for antibody expression
• Perform transfection, clone selection, single‑cell cloning, and productivity screening
• Support cell banking activities and maintain detailed documentation
• Perform expression vector construction, plasmid preparation, and NGS sequencing

• Analyze and interpret experimental data
• Maintain accurate electronic lab notebook records
• Present findings clearly to cross‑functional teams

• Contribute to troubleshooting, assay development, and process improvements
• Operate effectively in a fast‑paced, early‑stage R&D environment

• BS or MS in Cell Biology, Molecular Biology, Biochemistry, or related field
• Research Associate I: 1+ years of industry experience in biologics or antibody discovery
• Senior Research Associate: 4+ years of industry experience in biologics or antibody discovery
• Strong background in mammalian cell biology and expression systems
• Demonstrated hands‑on expertise in CHO cell culture and stable cell line development
• Ability to thrive in a fast‑paced team environment and deliver complex objectives under tight deadlines
• Availability to work weekend and holiday shifts as needed

• CHO suspension culture and clone screening
• Stable transfection methods
• Cell Biology and Molecular Biology laboratory skills
• Familiarity with antibody or multi‑specific biologics preferred
• Strong experimental design and troubleshooting skills

• Expected base salary range: $60,000 – $85,000 annually. Actual compensation will be based on qualifications, experience, and skills.
• Comprehensive benefits package: 100% paid employee premiums for medical/dental/vision, STD, LTD, 401(k) plan with 50% company match up to 3% and 5‑year vesting schedule, 15 PTO days per year, sick leave, 11 paid holidays and more.

Syst Immune is an Equal Opportunity Employer. We welcome diverse talent and encourage all qualified applicants to apply.