Research Assistant - Process Development

Yoh Life Sciences

Yoh Life Sciences is hiring a contract Research Associate (RA) in Longmont, Colorado. The role involves reagent preparation, experimental execution, and conducting standardized laboratory procedures under established protocols. The Research Associate will contribute to the manufacturing transition of analytical methods and diagnostic assay products in accordance with USDA policies and collaborate between interdisciplinary teams.

Location: Longmont, CO

Duration: 6‑month contract (possibility of conversion)

Pay: $25/hr

Shift: M – F 8:00–4:30

• Prepare and characterize assay reagents, including antibodies, antigens, conjugates (gold nanoparticles, latex beads), and buffers.
• Assemble and test lateral flow prototypes, including membrane selection, striping, blocking, cutting, and housing.
• Perform analytical testing (sensitivity, specificity, reproducibility, stability, and robustness studies).
• Maintain accurate laboratory notebooks and electronic records; prepare technical reports, training materials, and technical guidance for internal stakeholders.
• Support recordkeeping and documentation in compliance with USDA and federal requirements.
• Collaborate cross‑functionally with assay development, process engineering, manufacturing, and quality teams.
• Assist in equipment maintenance, calibration, and troubleshooting.
• Support method validation and verification activities as required.
• Support technical transfer experiments onto automated manufacturing equipment for both existing and new veterinary diagnostic products.

• Bachelor’s degree in a life sciences field (biology, chemistry, biochemistry, or similar). 0‑2 years of experience in biotechnology or laboratory settings preferred.
• Hands‑on laboratory experience performing biological or biochemical assays.
• Strong attention to detail, organization, and experimental rigor.
• Experience working in a Biosafety Level 1 laboratory.

• Experience in immunoassays, lateral flow assays, ELISA, or related techniques.
• Familiarity with diagnostic assay development and/or analytical method validation.
• Experience working in regulated environments (Quality Systems, ISO 9001:2015).

Benefits include:

• Medical, Prescription, Dental & Vision benefits (for employees ≥20 hrs/week).
• Health Savings Account (for employees ≥20 hrs/week).
• Life & Disability Insurance (for employees ≥20 hrs/week).
• Met Life Voluntary Benefits.
• Employee Assistance Program.
• 401(k) Retirement Savings Plan.
• Direct Deposits & weekly ePayroll.
• Referral Bonus Programs.
• Certification and training opportunities.

Yoh, a Day & Zimmermann company, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

For individuals with a disability who may need accommodations, visit

For California applicants, qualified applicants with arrest or conviction records will be considered in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

In Massachusetts, it is unlawful to require or administer a lie detector test as a condition of employment or continued employment.