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

SlJ4UjV2OFB3ZzhTY0lnUUE5bzhWd002OXc9PQ==
  • 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

United Nations Secretariat

Capacity Needs and Priority Assessment Consultant (Latin American States), New York City Job at United Nations Secretariat

 ...States, in line with the methodology to be provided by the Division. A capacity needs and priorities assessment report for Latin American States. Work LocationHome-based with possibility of travel (to be funded by the consultant). Expected duration40 days within a 4-months... 

American Airlines

General Manager, Airport Customer Experience SMF Job at American Airlines

 ...part of our Field Stations team within our Customer Experience group**What you'll do**+...  ...stakeholders+ Coordinates closely with local airport authorities and government agencies to...  ...manner and deliver superior customer service**All you'll need for success****... 

Worldwide Flight Services

Airline Ramp/Passenger Service Agent Part-Time $17 Per Hour (RAP) Job at Worldwide Flight Services

Take a Huge step in your career and join Worldwide Flight Services. WFS employs over 22,200 of the finest professionals in ground handling...  ...a full-service capability that includes Aviation cargo, Airline passenger, and Aviation ramp services. Our team of people is highly... 

Thomas V Giel Garage Doors

Warehouse Associate Job at Thomas V Giel Garage Doors

Come join our team and open the door to an amazing career at Thomas V. Giel Garage Doors! We have an immediate opening for a Warehouse Associate at our Gibsonia, PA location. We have been serving Western Pennsylvania for 75 years and are proud to be the market leaders...

NetWorth Realty USA

Sales and Acquisitions Real Estate Agent Job at NetWorth Realty USA

 ...highest quality inventory of fixer-upper homes to Landlords and Flippers, assisting with...  ...relationship that lasts far past the first sale! What that means : NetWorthagents are...  ...return for buyers. Network to build new and maintain long-term relationships. Utilize...