Chemist

Summary

This position is located within the Department of the Interior, U.S. Geological Survey, Rocky Mountain Region, Central Energy Resources Science Center, Lakewood, Colorado. Salary: GS-12: $99,800 (Step 01) to $129,742 (Step 10).

Duties

• 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.

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.

Requirements

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.

Education

This position does not allow substituting education for experience. This position has a mandatory education requirement. You must submit a copy of your transcript(s) to support claimed education if substituting education for experience. Transcripts must include your name, school name, grades, credit hours earned, major(s), grade point average or class ranking, and date the degree was conferred, if applicable. A typed list of courses, grades, semester/quarter hours, GPA, etc. will not be accepted. Non-submission may result in being rated not qualified for the position. Unofficial transcripts are acceptable, but if you are selected for this position and you used your education to qualify, you must provide official transcripts before you begin work. Foreign Education: To receive credit for education completed outside the United States, you must show proof that the education has been submitted to a private organization that specializes in interpretation of foreign educational credentials and such education has been deemed at least equivalent to that gained in conventional U.S. education programs. For more information on how foreign education is evaluated, visit: https://www.ed.gov/about/initiatives/international-affairs/recognition-of-foreign-qualifications

How to apply

Please read the entire announcement and all the instructions before you begin an application. To apply for and be considered for this position, you must complete all required questionnaires, assessments and submit all required documentation as specified in the How to Apply and Required Documents section. The complete application package must be submitted by 11:59 PM (ET) on the 09/18/2026-unless otherwise stated in this vacancy announcement to receive consideration. Note: You will only be marked eligible for those eligibilities that you selected and provided the appropriate supporting documentation. The application process is as follows: Click the Apply Online button. Answer the questions presented in the application and attach all necessary supporting documentation. To PREVIEW the application questionnaire, select the following link: https://apply.usastaffing.gov/ViewQuestionnaire/13054243 Click the Submit Application button prior to 11:59 PM (ET) on the announcement closing date. Applicants who apply under this job opportunity announcement agree to have their application, associated documents and applicable personal information shared with other Bureaus/Offices within the Department of the Interior (DOI) who have vacancies within the same occupational series, grade, full performance level and in the same geographic location(s), including within the same metro/commuting area. Applying to this announcement does not replace the need to apply to other job opportunity announcements for which you wish to receive consideration. To update your application, including supporting documentation: During the announcement open period, return to your USAJOBS account, find your application record, and click Edit my application. This option will no longer be available once the announcement has closed. To view the announcement status or your application status, visit https://help.usajobs.gov/how-to/application/status.