Clarification from the agency

Open only to current USGS employees serving on perm competitive service appts; OR current USGS employees, regardless of current status, who are eligible for consideration under a noncompetitive auth such as those specific to 30% disabled vets, Individuals with Disabilities, Pathways Interns & Recent Grads who are eligible for noncompetitive conversion, etc., OR current or former employees who are serving, or previously served, on temp or term appt in a land management agency.

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Some of the major duties you will perform include but are not limited to the following:

• Performs various geochemical analyses on geologic and environmental materials (e.g., petroleum, extracts, rocks, sediments) submitted to the Petroleum Geochemistry Research Laboratory (PGRL). Submits and validates associated data in the Laboratory Information Management System (LIMS).
• Independently operates and maintains instrumentation, such as gas chromatographs, stable isotope-ratio mass spectrometers, gas chromatograph-mass spectrometers, and carbon elemental analyzers.
• Follows established standard operating procedures and trains others as needed. Develops and documents method modifications as needed following Quality Management System requirements.
• Develops new techniques and procedures that support petroleum geochemical studies as needed. Prepares, submits, and disseminates reports that document the development and implementation of these new methods.
• Maintains documentation, such as logbooks, scientific notebooks, and maintenance logs, as specified under the Quality Management System.
• Operates a government owned or leased vehicle as an incidental driver.

Conditions of employment

• Must be a U.S. Citizen or National.
• Appointment subject to background investigation and favorable adjudication.
• Males born after 12-31-59 must be registered for Selective Service.
• Direct Deposit participation required.
• Successfully pass the E-Verify employment verification check. To learn more, visit https://www.e-verify.gov/.
• Must possess and maintain a valid driver's license throughout employment.
• A physical examination will be required, or a statement regarding physical ability will need to be completed. You must maintain physical fitness standards throughout employment.
• You are required to complete training, obtain and maintain a government credit card with travel and purchase authority.

As a condition of employment for accepting this position, you may be required to serve a 1-year probationary period to evaluate your fitness and whether your continuation of employment advances the public interest.

This probationary period is an extension of the appointment process and therefore requires the agency to determine if continued employment would advance the public interest, meet the organization goals and mission of the agency, and/or otherwise promote the efficiency of the service. In determining if your employment advances the public interest, the agency will consider: your performance and conduct; the needs and interests of the agency; whether your continued employment would advance organizational goals of the agency or the Government; and whether your continued employment would advance the efficiency of the Federal service.

Under applicable law, the employment of an individual serving a probationary or trial period automatically terminates when that period ends unless the agency affirmatively certifies, in writing, that the individual's employment should continue and that their appointment should be finalized. In the absence of agency action to affirmatively certify continued employment beyond the probationary or trial period, such appointments are terminated. Upon completion of your probationary period your employment will be terminated unless you receive certification, in writing, that your continued employment advances the public interest.

Qualifications

All qualifications must be met by the closing date of this announcement - 09/18/2026 unless otherwise stated in this vacancy announcement. Competitive candidates must also meet Time-in-Grade requirements as defined in 5 CFR 300, Subpart F.

For current Federal employees, if hours worked per week are not included on your resume, you must submit a non-award SF-50 as part of your application to be used to validate your work schedule and determine the amount of specialized experience that you will be granted. An award SF-50 will not be acceptable documentation for which to consider your amount of qualifying experience. For periods of time that reflect military service, the DD-214 or Statement of Service is sufficient to meet the work schedule requirement as the service dates will be reflected. For all other applicants who are not current federal employees, your resume must state either "full-time" (or "40 hours a week") or "part-time" with the number of hours worked per week to ensure proper crediting of specialized experience.

Minimum Qualification Requirements: To qualify for this position, you must meet the following minimum qualifications:
Basic Educational Requirement AND Specialized Experience for the series to which you are applying.

Basic Educational Requirements: In addition to the specialized experience requirements for this position, you must meet at least one of the following:
A. Degree: Successful completion of a full 4-year course of study in an accredited college or university leading to a bachelor's or higher degree in physical sciences, life sciences, or engineering that included 30 semester hours in chemistry, supplemented by course work in mathematics through differential and integral calculus, and at least 6 semester hours or the equivalent in physics. You must submit transcripts.
-OR-
B. Combination of education and experience: course work as shown in A above (24 semester hours or the equivalent in physical sciences, life sciences, or engineering), including at least 30 semester hours or the equivalent in chemistry, supplemented by mathematics through differential and integral calculus, and at least 6 semester hours or the equivalent of physics, plus appropriate experience and/or additional education for a total of 4 years. The education or combined education and experience must be comparable in type, scope and thoroughness to that acquired through successful completion of a 4-year course of study as described in "A" above. (CLICK HERE FOR DETAILS ON HOW TO COMBINE EDUCATION AND EXPERIENCE)

To qualify for this position at the GS-12 grade level:
Experience: To qualify, you must possess at least one full year of specialized experience equivalent to the GS-11 level in the Federal service (obtained in either the public or private sectors). Specialized experience is defined as demonstrated experience: The ideal candidate has experience working in an oil and gas testing laboratory operating, maintaining, and troubleshooting stable isotope ratio mass spectrometers and gas chromatographs. Other necessary specialized experience includes analyzing samples under a quality management system and inputting data into a laboratory information management system. You must include hours per week worked.

Volunteer Experience: Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., Peace Corps, AmeriCorps) and other organizations (e.g., professional; philanthropic; religious; spiritual; community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment. You will receive credit for all qualifying experience, including volunteer experience.

How you will be evaluated

You will be evaluated for this job based on how well you meet the qualifications above.

Your qualifications will be evaluated based on your application materials (e.g. resume, supporting documents), the responses you provide on the application questionnaire, and the result of the additional assessment(s) required for this position. To be considered for this position, you must complete all required steps in the process.

Your resume must not exceed 2 pages. Only the document submitted as the "Resume" under the Documents section will be used to determine your qualifications/eligibility and for rating purposes. In the event you submit more than one resume, only the latest submission will be reviewed.

You will be assessed in the following competencies (knowledge, skills, abilities, and other characteristics):

• Chemistry
• Laboratory Techniques
• Data Analysis
• Technical Competence
• Instrumentation

To be considered for this position, you must complete all required steps in the process. In addition to the application and application questionnaire, this position requires successful completion of additional assessment(s), including a Structured Resume Review. This assessment measures the critical competencies listed above that are required to successfully perform the job.

All qualified non-competitive applicants and the best-qualified Merit Promotion applicants will be referred to the hiring manager for consideration.

DUE WEIGHT: Please submit 1) a copy of your most recent performance appraisal/evaluation and 2) a list of any awards (e.g. superior performance awards, special act or achievement awards, quality step increase, etc.) you received in the last 5 years. Any performance appraisal/evaluation and award documentation you provide will be forwarded to the selecting official. The selecting official will review this documentation and give it due weight consideration during the overall selection process. If you do not have your most recent performance appraisal/evaluation, you must submit a statement as to why it is not available. Please indicate if any prior performance appraisals/evaluations were at an acceptable level.

Overstating your qualifications and/or experience in your application materials or application questionnaire may result in your removal from consideration or your score may be lowered. Cheating on an assessment may also result in your removal from consideration. Applicants who include vulgar, offensive, or inappropriate language or information in their application package will be ineligible for further consideration for this position.

Current or former displaced Federal employees who are surplus, displaced, or involuntarily separated have special priority selection rights under the Agency Career Transition Assistance Program (CTAP) or the Interagency Career Transition Assistance Program (ICTAP). To be considered under CTAP/ICTAP, you must be well-qualified, score at least 85 (i.e., meet the minimum qualification requirements, including any selective placement factors; education, and experience requirements), and be able to perform the duties of the position upon entry.