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Weekend Mass Spectrometry Jobs (NOW HIRING)

General Matter

Mass Spectrometry Chemist

Los Angeles, CA · On-site

$100K - $150K/yr

About This Role As a Mass Spectrometry Chemist at General Matter, you will play a critical role in ... Ability to work extended hours and weekends as necessary. Equal Opportunity Employer General Matter ...

General Matter

Mass Spectrometry Chemist

Los Angeles, CA

$100K - $150K/yr

About This Role As a Mass Spectrometry Chemist at General Matter, you will play a critical role in ... Ability to work extended hours and weekends as necessary. Equal Opportunity Employer General Matter ...

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Weekend Mass Spectrometry information

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$11K

$69.6K

$176.5K

How much do weekend mass spectrometry jobs pay per year?

As of Sep 2, 2026, the average yearly pay for weekend mass spectrometry in the United States is $69,587.00, according to ZipRecruiter salary data. Most workers in this role earn between $40,000.00 and $86,000.00 per year, depending on experience, location, and employer.

What is a weekend mass spectrometry specialist?

A Weekend Mass Spectrometry job involves operating and maintaining mass spectrometers, typically in a laboratory setting, during weekend shifts. Professionals in this role are responsible for preparing samples, running analyses, interpreting data, and ensuring that the equipment functions properly. These positions are often found in research labs, clinical labs, or pharmaceutical companies that require continuous data collection or sample processing outside of regular business hours.

What can I expect in terms of workflow and collaboration when working a weekend shift as a mass spectrometry specialist?

As a Weekend Mass Spectrometry specialist, your workflow may involve independently managing sample preparation, instrument calibration, and data analysis, often with less direct supervision compared to weekday shifts. You may collaborate remotely with team members or communicate with off-site supervisors to troubleshoot technical issues and ensure data quality. Flexibility and strong problem-solving skills are essential, as support staff may be limited during weekends. This role provides valuable opportunities to develop autonomy and technical expertise, which can support advancement into senior analytical or supervisory positions.

What are the key skills and qualifications needed to thrive as a weekend mass spectrometry specialist, and why are they important?

To thrive as a Weekend Mass Spectrometry Specialist, you need a solid background in analytical chemistry, experience with mass spectrometry techniques, and typically a degree in chemistry or a related field. Familiarity with mass spectrometry instruments (such as LC-MS/MS), laboratory information management systems (LIMS), and relevant certifications like ASCP are highly beneficial. Strong attention to detail, problem-solving abilities, and effective communication skills help ensure accurate data interpretation and efficient lab workflow. These competencies are crucial for reliable sample analysis, maintaining data integrity, and supporting research or clinical objectives during weekend operations.

What is the difference between Weekend Mass Spectrometry vs Weekend Laboratory Technician?

AspectWeekend Mass SpectrometryWeekend Laboratory Technician
CredentialsRelevant certifications in mass spectrometry, chemistry, or related fieldsLaboratory technician certifications or associate degrees in science
Work EnvironmentAnalytical labs, research facilities, pharmaceutical companiesClinical, research, or industrial labs
Job FocusOperating and maintaining mass spectrometry equipment, analyzing samplesPreparing samples, conducting tests, recording data
Industry UsagePharmaceuticals, biotech, environmental testingHealthcare, research, manufacturing

Weekend Mass Spectrometry specialists focus on operating advanced analytical instruments to analyze samples, requiring specific certifications. In contrast, Weekend Laboratory Technicians perform broader lab tasks, including sample preparation and basic testing. Both roles are essential in laboratory settings but differ in technical complexity and responsibilities.

More about Weekend Mass Spectrometry jobs

What cities are hiring for Weekend Mass Spectrometry jobs?

Cities with the most Weekend Mass Spectrometry job openings:

What are the most commonly searched types of Mass Spectrometry jobs?

The most popular types of Mass Spectrometry jobs are:

What states have the most Weekend Mass Spectrometry jobs?

States with the most job openings for Weekend Mass Spectrometry jobs include:

What job categories do people searching Weekend Mass Spectrometry jobs look for?

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Weekend Mass Spectrometry jobs near you
Infographic showing various Weekend Mass Spectrometry job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 66% Full Time, 29% Part Time, 3% Contract, and 1% Nights. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution, with an average salary of $69,587 per year, or $33.5 per hour.

Mass Spectrometry Chemist

General Matter

Los Angeles, CA • On-site

$100K - $150K/yr

Full-time

Medical, Dental, Vision, Retirement

Posted 27 days ago

Job description

About the Company
General Matter is enriching uranium in America.
Our goal is to design, build, and operate the world's lowest-cost enrichment services in the United States.
Our mission is to restore America's ability to produce nuclear fuel-fuel that will power AI, advanced manufacturing, critical industries, and the next generation of nuclear reactors.
Ultimately, our work will help power national ambitions and enable a high-energy society.
We were incubated by Founders Fund, like Anduril and Palantir before us, and are backed by top-tier investors. Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production.
We are a mission-driven company with a culture of urgency, accountability, and transparency.
Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable.
About This Role
As a Mass Spectrometry Chemist at General Matter, you will play a critical role in establishing and advancing our analytical measurement capabilities for uranium isotopic analysis. You'll work hands-on with cutting-edge mass spectrometry instrumentation - including isotope-ratio mass spectrometry and ICP-MS systems - to develop, validate, and execute methods that directly support our enrichment operations and product certification. This is a rare opportunity to build measurement systems from the ground up at a next-generation nuclear facility during rapid commercial scale-up, where your technical work immediately impacts our ability to produce low-cost nuclear fuel at scale. If you seek high impact and are excited by fast-paced, intense, Skunkworks-style projects in service of a mission of national importance, we encourage you to apply to join our Chemistry team.
Responsibilities
  • Develop, optimize, and validate analytical methods for uranium isotopic analysis using mass spectrometry (isotope-ratio MS, ICP-MS)
  • Perform isotopic sampling, sample preparation, and measurement workflows to support enrichment process monitoring and product certification
  • Operate, maintain, calibrate, and troubleshoot mass spectrometry instrumentation to ensure measurement accuracy, precision, and reliability
  • Integrate measurement systems with sample-handling workflows and support automation and process improvements
  • Collaborate closely with the Chemistry team and cross-functional partners (Operations, Product Certification, Engineering) to define analytical requirements and deliver results that drive decision-making
  • Document methods, maintain rigorous QA/QC protocols, and support regulatory and compliance reporting as needed
  • Contribute to continuous improvement of analytical capabilities as General Matter scales production

Basic Qualifications
  • Bachelor's degree in Chemistry, Radiochemistry or a related field, or equivalent experience
  • Hands-on laboratory experience with mass spectrometry techniques (ICP-MS, isotope-ratio MS, or similar)
  • Demonstrated ability to develop, troubleshoot, and optimize analytical methods and instrumentation
  • Strong problem-solving skills and attention to detail in data collection, analysis, and documentation
  • Evidence of exceptional ability - prior research projects, published work, or demonstrated technical contributions in analytical chemistry or instrumentation
  • Ability to obtain and maintain required security clearance and access authorization for work with nuclear materials
  • Ability to work on-site in Los Angeles, CA or Paducah, KY

Preferred Skills and Experience
  • Experience with uranium isotopic analysis, nuclear materials characterization, or safeguards measurement techniques
  • Familiarity with TIMS, MC-ICP-MS, or other isotope-ratio mass spectrometry platforms
  • Prior work in a DOE national laboratory, NRC-licensed facility, nuclear fuel-cycle company, or instrumentation vendor environment
  • Experience in method validation, regulatory compliance (e.g., DOE, NRC, ISO standards), or quality assurance in analytical chemistry
  • Background in fast-paced, resource-constrained, or startup environments where autonomy and bias toward action are required
  • Strong communication skills and ability to collaborate across technical and operational teams

Additional Requirements
  • Ability to work extended hours and weekends as necessary.

Equal Opportunity Employer
General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
Compensation and Benefits
The base salary range for this role is $100,000-$150,000 annually.
Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.

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