Part-Time Weekend HPLC Chemist Job at Harken Research, Pasadena, CA

VnF5STAzZ3VDTWVTM0tqS012bnpWeWZQeXc9PQ==
  • Harken Research
  • Pasadena, CA

Job Description

Part-Time Weekend HPLC Chemist

Harken Research · Pasadena, CA (On-site)

Compensation: $28–$35/hour (DOE)

Schedule: 8–16 hours/week (Saturdays and/or Sundays)

Opportunity: Potential for increased hours or advancement into full-time roles

About Us

Harken Research is a rapidly growing ISO 17025–accredited analytical laboratory serving the dietary supplement industry.

Our lab is fast-paced, scientifically rigorous, and committed to delivering high-quality results. Our strengths are our ability to offer customized testing and problem solving to address client needs; excellent customer service; and quick turnaround times.

Summary

We’re seeking a part-time HPLC chemist to join our weekend lab team. This role is ideal for someone with strong analytical chemistry experience who enjoys working independently and with precision. You will be responsible for operating HPLC instruments, preparing samples, troubleshooting issues, and ensuring accurate and timely test results on dietary supplement products.

Responsibilities

  • Operate and maintain HPLC systems for weekend test batches
  • Run validated quantitative methods for analytes such as caffeine, vitamins, sugars, amino acids, and botanical actives
  • Perform precise sample preparation: weighing, pipetting, extraction, dilution
  • Troubleshoot HPLC instrument issues, including pressure spikes, retention time shifts, peak distortion, and detector noise
  • Identify and resolve sample preparation challenges, such as solubility problems, incomplete extraction, or interference from matrix components
  • Record and report results with attention to detail and regulatory compliance
  • Follow SOPs and ISO 17025 quality protocols
  • Support method verification or validation efforts when needed
  • Communicate any urgent issues or maintenance needs to the weekday team

Qualifications

  • Bachelor’s degree in Chemistry, Biochemistry, or a related field
  • Minimum 2 years of hands-on HPLC experience
  • Strong attention to detail in sample prep and data analysis
  • Confident working independently on weekends without supervision
  • Experience in dietary supplement, food, or pharmaceutical testing preferred
  • Familiarity with ISO 17025 or other regulated lab environments is a plus

Compensation

  • Pay: $28–$35/hour, depending on experience
  • Flexible weekend scheduling
  • Potential for additional hours or long-term advancement

Job Tags

Full time, Immediate start, Flexible hours, Shift work, Weekend work, Sunday, Saturday, Weekday work,

Similar Jobs

Aligned Data Centers

Construction Manager Job at Aligned Data Centers

 ...as many as 25+ external vendors per project comprising General Contractors, A&E design teams, commissioning agents, equipment suppliers,...  ...orientation, gender identity, gender expression, genetic information, military or veteran status, or any other characteristic protected by... 

Plastic Executive Recruiters

Reliability Engineer Job at Plastic Executive Recruiters

 ...Maintenance Engineer is required. ~ Experience working with extruders, vacuum convey equipment, motors, drives, chillers, or air compressors is a big plus. ~ Bachelors degree in Mechanical Engineering or related field. ~ Experience leading Root Cause Failure Analyses... 

Moda Health

Dental PR Claims Entry Operator - Temporary Job at Moda Health

 ...Typing skills of 35 wpm net. # Ability to work independently and collaboratively. #...  ...Conditions & Contact with Others Work from home environment with extensive close PC and...  ...keyboard work, constant sitting, and occasional phone work. Must be able to navigate multiple... 

Guardian Flight

Fixed Wing Pilot Instructor Job at Guardian Flight

 ...crew members, medical clinicians, maintenance technicians and communication specialists. Maintains ongoing knowledge of relevant aviation regulations, aircraft operational/equipment changes and company policies. Instructs to ensure all required flight logs, records... 

Drybar

Receptionist Job at Drybar

 ...a nationally recognized and highly sought-after brand. At Drybar...  ...employee the premier blowout experience. We believe its not just blowouts...  ...YOULL GET~ Competitive Pay and Amazing Bonus Incentives...  ...license preferred, but not required. Strong conceptual thinking...