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We’re here for one reason and one reason only – to cure cancer. Every moment is dedicated to developing treatments and every action moves us one step closer to our goal. We’ve made incredible scientific breakthroughs and our pioneering personalized CAR T-cell therapies have changed the paradigm. But we're not finished yet.

Join Kite, as we make even bigger advances in cancer therapies, and help shape where our business and medical science goes next.

We believe every employee deserves a great leader. People Leaders are the cornerstone to the employee experience at Gilead and Kite. As a people leader now or in the future, you are the key driver in evolving our culture and creating an environment where every employee feels included, developed and empowered to fulfil their aspirations. Join Kite and help create more tomorrows.

Job Description

We are seeking a highly motivated **Associate Research Scientist** to join our Process Impurities Development team within the Method Development and Automation function. This role focuses on the development, optimization, and validation of analytical methods supporting residual impurity testing, host cell protein (HCP) analysis, compendial testing, and raw material characterization to support gene and cell therapy manufacturing.

The successful candidate will bring strong experience with ELISA, ELLA, and molecular biology techniques, along with a working knowledge of ICH, USP, and EU regulatory guidelines for analytical method development. You will play a critical role in ensuring product safety and consistency by supporting process development and tech transfer activities across the organization.

**Title** : Associate Research Scientist I, Process Impurities Development

**Team** : Analytical Development, Process Impurities, Method Development

**Reports to** : Principal Scientist, Analytical Ops

Key Responsibilities

+ Develop and optimize analytical methods for detection and quantification of residual impurities, including Host Cell Proteins and nucleic acids

+ Perform and validate ELISA- and ELLA-based assays for impurity profiling

+ Execute molecular biology methods (e.g., qPCR, ddPCR) to support residual DNA or RNA detection

+ Conduct compendial testing per USP, EP, and other regulatory guidelines for raw materials and in-process components

+ Design and execute method validation studies in accordance with ICH, USP, and EU requirements

+ Troubleshoot assay performance issues and implement continuous improvements

+ Collaborate cross-functionally with Process Development, Quality, and Manufacturing teams to integrate analytical methods into development workflows

+ Document experimental protocols, validation reports, and supporting SOPs in accordance with GDP and regulatory standards

+ Maintain compliance with GMP and internal quality systems

Basic Qualifications

+ BA / BS and 4+ years of relevant experience

+ MA / MS and 2+ years of relevant experience

+ Degree in Biochemistry, Molecular Biology, Analytical Chemistry, or a related discipline

Preferred Qualifications

+ Demonstrated expertise in ELISA, ELLA (e.g., ProteinSimple Ella platform), and quantitative molecular assays

+ Familiarity with impurity testing for biologics or gene therapies (e.g., HCP assays, residual DNA/RNA, enzyme activity)

+ Proven experience developing and validating analytical methods in alignment with ICH Q2(R2), USP, and EU guidelines

+ Working knowledge of compendial methods and regulatory standards (USP <85>, <61/62>, <1132>, etc.)

+ Proficiency in data analysis using software such as SoftMax Pro, GraphPad Prism, and JMP

+ Excellent technical writing skills for protocols, reports, and submissions

+ Strong collaborative mindset and communication skills

+ Comfortable working in a dynamic biotech environment with evolving priorities and timelines

The salary range for this position is: $99,705.00 - $129,030.00. Kite considers a variety of factors when determining base compensation, including experience, qualifications, and geographic location. These considerations mean actual compensation will vary. This position may also be eligible for a discretionary annual bonus, discretionary stock-based long-term incentives (eligibility may vary based on role), paid time off, and a benefits package. Benefits include company-sponsored medical, dental, vision, and life insurance plans*.

For additional benefits information, visit:

https://www.gilead.com/careers/compensation-benefits-and-wellbeing

* Eligible employees may participate in benefit plans, subject to the terms and conditions of the applicable plans.

Kite is a biopharmaceutical company engaged in the development of innovative cancer immunotherapies with a goal of providing rapid, long-term durable response and eliminating the burden of chronic care. The company is focused on chimeric antigen receptor (CAR) and T cell receptor (TCR) engineered cell therapies designed to empower the immune system's ability to recognize and kill tumors. Kite is based in Santa Monica, CA. For more information on Kite, please visit www.kitepharma.com . Sign up to follow @KitePharma on Twitter at www.twitter.com/kitepharma .

For jobs in the United States:

Kite Pharma is committed to providing equal employment opportunities to all employees and applicants for employment, and is dedicated to fostering an inclusive work environment comprised of diverse perspectives, backgrounds, and experiences. Employment decisions regarding recruitment and selection will be made without discrimination based on race, color, religion, national origin, sex, age, sexual orientation, physical or mental disability, genetic information or characteristic, gender identity and expression, veteran status, or other non-job related characteristics or other prohibited grounds specified in applicable federal, state and local laws. In order to ensure reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Era Veterans' Readjustment Act of 1974, and Title I of the Americans with Disabilities Act of 1990, applicants who require accommodation in the job application process may contact [email protected] for assistance.

For more information about equal employment opportunity protections, please view the 'Know Your Rights' (https://www.eeoc.gov/employers/eeo-law-poster) poster.

NOTICE: EMPLOYEE POLYGRAPH PROTECTION ACT (http://www.dol.gov/whd/regs/compliance/posters/eppac.pdf)

YOUR RIGHTS UNDER THE FAMILY AND MEDICAL LEAVE ACT

PAY TRANSPARENCY NONDISCRIMINATION PROVISION (https://www.dol.gov/sites/dolgov/files/OFCCP/pdf/pay-transp\_%20English\_formattedESQA508c.pdf)

Our environment respects individual differences and recognizes each employee as an integral member of our company. Our workforce reflects these values and celebrates the individuals who make up our growing team.

Kite Pharma provides a work environment free of harassment and prohibited conduct. We promote and support individual differences and diversity of thoughts and opinion.

For Current Kite Pharma Employees and Contractors:

Please apply via the Internal Career Opportunities portal in Workday.

Change The World With Us

Everyone at Kite is grounded by one common goal – curing cancer. Every day, we aim to establish a direct line between that purpose and our day-to-day work.

We are creating Kite together, with the recognition that the best teams are built by the best people. We maintain an attitude of curiosity, and creativity with each challenge as we develop a new market for cancer therapies. We appreciate and respect one another, and most importantly, we don’t take success for granted.

While we’ve come a long way to make what others viewed as impossible, possible, we know one thing is certain. Today is just the beginning.