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

VG5nQ0RPcFJzRGhYMzdXWjJiTjB4MlloRmc9PQ==
  • 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, Part time, Immediate start, Flexible hours, Shift work, Sunday, Saturday, Weekday work,

Similar Jobs

Pocketbook Agency

Executive/Personal Assistant to Entertainment Couple Job at Pocketbook Agency

 ...We are seeking an Executive/Personal Assistant to support a lovely couple in the entertainment industry. The ideal candidate will assist with both professional and domestic needs, ensuring seamless day-to-day operations across multiple homes, travel schedules, and professional... 

Monterey Mechanical Company

Senior Estimator Job at Monterey Mechanical Company

 ...pricing for civil work on bid projects; including excavation, shoring and other site work such as paving, concrete sidewalks, curbs, gutters, fencing, landscaping, structural demolition, other architectural and structural, building specialty, and electrical work as... 

Team 360 Staffing

Maintenance Mechanic Job at Team 360 Staffing

 ...Position Overview Position: Maintenance Mechanic Location : Monroe, WA Employment Type: Full-Time (Staffing-to-Permanent) Start Date: ASAP Compensation & Shift Schedule: 4:30 AM- 1:00 PM Pay Rate: $28.00/h Essential Responsibilities Promptly... 

Curative

Prior Authorization Medical Director Physician- Los Angeles, CA Area - Work From Home Job at Curative

Prior Authorization Medical Director Physician Opportunity in the Los Angeles Area Please consider this unique opportunity to join a well-established and respected group of innovators in value-based care. This group of thought-leaders are in search of physician leaders...

M.E. Wilson Company

2026 Summer Insurance Intern Job at M.E. Wilson Company

 ...M.E. Wilson Summer Internship Program The M.E. Wilson Summer Internship is a paid 8-week program based in our Tampa office, designed...  ...interested in a career in the insurance industry. This immersive experience blends hands-on learning, professional training, and...