Laser-Based Mass Spectrometry - Postdoctoral Researcher

We need to output HTML fragment with sections: headings

for sections like About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule. Only include sections that have real specific content. We need to parse the posting. Company Description: we can treat as "About the role"? Actually "Company Description" is about the lab. Could be "About the role"? The instruction: use

for section headings (e.g. About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule). So we can map content accordingly. We need to preserve all substantive info, remove boilerplate (cookie/navigation/legal/EEO/equal-opportunity/scam-warning). Also remove duplicated lines, application instructions. We need to include sections only when posting has real specific content. Let's extract: - About the role / Company Description: "Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact." That's substantive. - Job Description: details of responsibilities. We can put under Responsibilities heading. Responsibilities bullet list: "Develop and apply new methods of isotopic and elemental analysis. Propose and develop new applications for RIMS; for example, laser spectroscopy, environmental chemistry, and isotope geology. Conduct both experimental and routine analyses of a variety of natural and manufactured materials to demonstrate existing and new capabilities; communicate results in oral and written reports. Collaborate with scientists and technical personnel to carry out RIMS analysis and data interpretation for Earth science, nuclear nonproliferation, and nuclear forensics applications. Participate in development of research plans and proposals. Publish research results in peer-reviewed scientific or technical journals. Present results at external conferences, seminars, and/or technical meetings. Perform other duties as assigned." Also earlier: "You will work with a group of geoscientists, radiochemists, and other scientists on method development, procedure optimization, sample analysis, and data interpretation aimed at understanding detection, analysis, and isotope systematics. You will participate in all phases of research from project development through implementation, data analysis and interpretation, and documentation and presentation of results. You will also collaborate with a larger group of researchers using a range of state-of-the-art mass spectrometers (noble gas mass spectrometry, ICPMS) and microanalytical instruments (SIMS, EPMA) in related application areas. This position is in the Trace Isotope and Element Signatures Group within the Nuclear and Chemical Sciences Division. This position requires full-time on-site presence due to the nature of the work." These are also responsibilities. We can combine. - Qualifications: list of required qualifications. Qualifications bullet list: "Ability to obtain and maintain a U.S. DOE Q-level security clearance, which requires U.S. Citizenship. PhD in a field of earth, chemical, or physical sciences having a close relationship to the technical capabilities and applications listed above. Experience in one or more of the following: RIMS, LA-ICP-MS, SIMS, noble gas mass spectrometry. Including, demonstrated understanding of data reduction and analysis for these techniques, including integration of data streams from multiple instruments, such as noble gas and trace element data. Demonstrated ability to operate, maintain, design, and construct laboratory equipment. Experience in isotope ratio analysis of a range of elements in a variety of natural and synthetic materials. Willingness to work with radioactive and radiologically controlled materials in accordance with approved procedures, training requirements, and safety controls. Proficient written and verbal communication skills, and ability to develop and carry out independent research as demonstrated through publication of peer-reviewed literature. A record of innovation in experimental design, techniques, and execution, and the ability to work independently as well as in multidisciplinary research teams." - Qualifications We Desire (desired): bullet list: "Experience in uncertainty quantification for mass-spectrometric data using statistical and/or machine learning methods. Experience with software development for hardware control, data acquisition, and data analysis in commonly used languages including Python, MATLAB, and/or Labview. Expertise with ultra-high-vacuum system development, operations and maintenance. Experience working with radioactive and radiologically controlled materials in accordance with approved procedures, training requirements, and safety controls." We could treat "Qualifications" as required, and maybe "Preferred Qualifications" as another section? But instruction only lists certain headings; we could put desired under Qualifications as well, or maybe under Skills? But better to keep Qualifications heading and include both required and desired as sub-bullets? Could separate but not required. We'll just include all under Qualifications. - Pay: "Pay Range $123,048 Annually This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs." That's specific pay info, so include Pay section. - Benefits: "Included in 2026 Best Places to Work by Glassdoor! Flexible Benefits Package 401(k) Relocation Assistance Education Reimbursement Program Flexible schedules (*depending on project needs) Our values - visit https://www.llnl.gov/inclusion/our-values" Also maybe other benefits like "Flexible schedules". So we can include Benefits section. - Schedule: "This position requires full-time on-site presence due to the nature of the work." Also "Flexible schedules (*depending on project needs)" mentioned under benefits. So schedule info: full-time on-site presence. Could be Schedule section. We should not include boilerplate like Security Clearance details (though that is part of qualifications). Actually security clearance is part of qualifications; we already included that. The extra details about drug testing, wireless devices, etc are boilerplate/legal; remove. Also remove "How To Identify Fake Job Advertisements", EEO, Reasonable Accommodation, California Privacy Notice, etc. Also remove duplicated lines: there is duplicate "Qualifications" heading in the posting; we just output once. Now produce HTML fragment:

About the role

Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

Responsibilities

• Develop and apply new methods of isotopic and elemental analysis.
• Propose and develop new applications for RIMS; for example, laser spectroscopy, environmental chemistry, and isotope geology.
• Conduct both experimental and routine analyses of a variety of natural and manufactured materials to demonstrate existing and new capabilities; communicate results in oral and written reports.
• Collaborate with scientists and technical personnel to carry out RIMS analysis and data interpretation for Earth science, nuclear nonproliferation, and nuclear forensics applications.
• Participate in development of research plans and proposals.
• Publish research results in peer-reviewed scientific or technical journals.
• Present results at external conferences, seminars, and/or technical meetings.
• Perform other duties as assigned.
• Work with a group of geoscientists, radiochemists, and other scientists on method development, procedure optimization, sample analysis, and data interpretation aimed at understanding detection, analysis, and isotope systematics.
• Participate in all phases of research from project development through implementation, data analysis and interpretation, and documentation and presentation of results.
• Collaborate with a larger group of researchers using a range of state-of-the-art mass spectrometers (noble gas mass spectrometry, ICPMS) and microanalytical instruments (SIMS, EPMA) in related application areas.
• This position is in the Trace Isotope and Element Signatures Group within the Nuclear and Chemical Sciences Division.
• This position requires full-time on-site presence due to the nature of the work.

Qualifications

• Ability to obtain and maintain a U.S. DOE Q-level security clearance, which requires U.S. Citizenship.
• PhD in a field of earth, chemical, or physical sciences having a close relationship to the technical capabilities and applications listed above.
• Experience in one or more of the following: RIMS, LA-ICP-MS, SIMS, noble gas mass spectrometry; including demonstrated understanding of data reduction and analysis for these techniques, including integration of data streams from multiple instruments, such as noble gas and trace element data.
• Demonstrated ability to operate, maintain, design, and construct laboratory equipment.
• Experience in isotope ratio analysis of a range of elements in a variety of natural and synthetic materials.
• Willingness to work with radioactive and radiologically controlled materials in accordance with approved procedures, training requirements, and safety controls.
• Proficient written and verbal communication skills, and ability to develop and carry out independent research as demonstrated through publication of peer-reviewed literature.
• A record of innovation in experimental design, techniques, and execution, and the ability to work independently as well as in multidisciplinary research teams.
• Experience in uncertainty quantification for mass-spectrometric data using statistical and/or machine learning methods.
• Experience with software development for hardware control, data acquisition, and data analysis in commonly used languages including Python, MATLAB, and/or Labview.
• Expertise with ultra-high-vacuum system development, operations and maintenance.
• Experience working with radioactive and radiologically controlled materials in accordance with approved procedures, training requirements, and safety controls.

Pay

Pay Range $123,048 Annually. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

Benefits

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit https://www.llnl.gov/inclusion/our-values

Schedule

This position requires full-time on-site presence due to the nature of the work.

Check for any boilerplate left: we removed security clearance details beyond qualification, drug test, wireless devices, etc. Also removed EEO, scam warning, privacy notice, reasonable accommodation, etc. We kept the link for values; that's okay as it's part of benefits. We should ensure no repeated content: we have "Experience working with radioactive and radiologically controlled materials..." appears twice (once in qualifications required, once in desired). We kept both; it's okay but could be considered duplicate. Might remove duplicate. The instruction: remove duplicated lines. So we should deduplicate. The line appears in both required and desired; we