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Supervisory Physical Scientist

Department of the Interior
National Park Service
Big Bend National Park

Summary

This position is located in Big Bend National Park, in the Division of Science and Resource Management.

Hiring Manager Contact:
Herbert Young Jr.
Herbert_Young_Jr@nps.gov

Overview

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Accepting applications
Posted this week · Apply in 1 day
Due by 11:59 p.m. ET on June 30, 2026
Location
1 vacancy in the following location:
Work site options
Telework eligible
Yes—as determined by the agency policy. Approved for situational or emergency telework only.
Remote job
No
Relocation expenses reimbursed
No
Salary
$89,508 - $116,362 per year
Pay scale & grade
GS 12
Promotion potential
None
Pay scale and grade determines the salary of the job.
Work schedule
Full-time
Travel Required
Occasional travel - You may be expected to travel for this position.
Appointment type
Permanent
Occupations and job series
Supervisory status
Yes
Federal service type
This job is in the Competitive Service
Represented by a union
No
Drug test
No
Security clearance
Not Required
Position sensitivity and risk
Non-sensitive (NS)/Low Risk
Jobs require a background check and some require a security clearance. The type depends on the job.
Background check type
Financial disclosure required
Yes
Some jobs require financial disclosure to identify conflicts of interests.
Announcement number
IM-1538-BIBE-26-12987522-MP
Control number
873975400

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Duties

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Major Duties:

  • Serves as a senior principal advisor in the physical sciences for Big Bend National Park (BIBE) and the Rio Grande Wild and Scenic River (RIGR). The physical scientist is responsible for program development and implementation related to geology, soils, hydrology, air quality, acoustics, paleontology, caves and karst formations, and related fields and activities. The incumbent provides program oversight for the vegetation and wildlife management programs.
  • Develops and implements long range plans for the inventory, evaluation, documentation, preservation, research, and interpretation of physical sciences and other natural resources within the 801,000 acres of BIBE and within 245 miles of the Rio Grande River. Develops guidelines to deal with the more complex or unusual problems, or with novel, undeveloped or controversial aspects of physical sciences and other natural resources and their management.
  • Incumbent coordinates the park's physical science and natural resource management strategies and programs with those on adjacent lands for the purposes of achieving broad ecosystem protection strategies and preventing human impacts. Negotiates cooperative and interagency agreements and other cooperative instruments needed to effectively carry out resource stewardship goals. Identifies research needs, prepares requests for proposals or statements of work, and provides oversight for research projects. Serves as a Contracting Officer's Representative for projects conducted through contracts, interagency agreements, and cooperative agreements.
  • In cooperation with appropriate staff, researchers, and partners, the physical scientist designs, develops, tests, and implements scientific programs and monitoring protocols for the long-term monitoring of physical resources. Writes new monitoring documents that define monitoring techniques and develops methods for future refinements of protocols.
  • Incumbent provides oversight on the collection of qualitative and quantitative data to monitor geomorphic conditions, sediment and flow dynamics in the Rio Grande River and tributaries. Incumbent supervises a variety of projects related to landscape restoration and its impacts on erosion, sediment dynamics, and channel morphology.
  • Prepares management and scientific reports regarding the results of protection, mitigation, restoration, inventory, monitoring, and research activities. Summarizes new and conventional information for use by scientists, managers, park staff, cooperators, and partners.
  • Incorporates appropriate Geographic Information System (GIS) technology into job to provide comprehensive and scientifically sound answers to inquiries from managers and others.
  • Incumbent manages the overall operation of the park's air quality program. Provides supervision and guidance on the operation and maintenance of multiple instruments for a variety of national air quality monitoring programs.

Requirements

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Conditions of employment

  • U.S. Citizenship required.
  • Appointment subject to background investigation and favorable adjudication.
  • Meet Selective Service Registration Act requirement for males
  • Selectee will be required to participate in the Direct Deposit Electronics Funds Transfer Program.
  • You will be required to operate a government (or private) motor vehicle as part of your official duties; a valid driver's license is required. You will be required to submit a Motor Vehicle Operator's License and Driving Record. You must also submit (within a State sealed envelope or submitted directly by the State authorities), and at your own expense, all certified driving records from all States that disclose all valid driver's licenses, whether current or past, possessed by you.
  • You will be required to wear a uniform and comply with the National Park Service uniform standards. A uniform allowance will be provided.
  • You may be required to work on-call, evenings, weekends, holidays, overtime and shift work.
  • You may be required to travel overnight away from home 3-5 nights per month. You must obtain a government charge card for travel purposes. You may be required to complete training and obtain/maintain a government charge card with travel and/or purchase authority.
  • The position to which you will be appointed is subject to a financial disclosure reporting requirement and you will be required to complete a new entrant Confidential Financial Disclosure Report (OGE Form 450) within 30 days of your appointment.
  • Must be able to lift 50lbs.
  • Applicants must be at least (1)18 years old or (2) at least 16 years old and: (a) Have graduated from high school or been awarded a certificate equivalent to graduating from high school; or (b) Have completed a formal vocational training program; or (c) Have received a statement from school authorities agreeing with their preference for employment rather than continuing their education; or (d) Be currently enrolled in a secondary school and either work only during school vacation periods or work part-time during the school year under a formal student employment program.
*Additional Requirements located under qualifications*

Qualifications

Requirements Continued...

  • Any individual who is currently holding, or has held within the previous 52 weeks, a General Schedule position under non-temporary appointment in the competitive or excepted service, must meet time-in-grade requirements (must have served 52 weeks at the next lower grade or equivalent in the Federal service); with few exceptions as outlined in 5 CFR 300.603(b). Time-In-Grade requirements also apply to former Federal civilian employees applying for reinstatement who have had a break in service of less than one year, as well as current employees applying for Veterans Employment Opportunities Act of 1998 (VEOA) appointments. Time-in-grade does not apply to new excepted service appointments and must be met by the closing date of this announcement.

As a condition of employment for accepting this position, you will be required to serve a 1 year probationary during which your fitness and whether your continued employment advances the public interest will be evaluated. 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.

All qualifications must be met by the closing date of this announcement-06/30/2026-unless otherwise stated in this vacancy announcement.

Credit will be given for all appropriate qualifying experience. For current Federal employees, if hours worked per week are not included on your resume, you must submit a non-award SF-50 for each federal position listed as part of your application to be used to validate your work schedule and determine the amount of qualifying 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 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. Failure to adequately provide information needed to determine number of hours worked in each position may result in that time not being credited when evaluating qualifying experience.

For periods of time that reflect military service, the DD-214 or Statement of Service is sufficient to meet the full and/or part-time hours requirement as the service dates will be reflected.

To qualify for this position, you must possess one of the Basic Experience/Education Requirements for the 1301 series below AND you must possess the Minimum Qualifications (specialized experience) for the GS-12 grade level below.

BASIC EXPERIENCE OR EDUCATION REQUIREMENTS FOR PHYSICAL SCIENTIST GS-1301 SERIES:
  1. Degree: Bachelor's degree (or higher-level degree) in physical science, engineering, or mathematics that included 24 semester hours in physical science and/or related engineering science such as mechanics, dynamics, properties of materials, and electronics. You must provide transcripts.
  2. Combination: College-level education equivalent to one of the majors shown in 1 above that included at least 24 semester hours in physical science and/or related engineering science, plus appropriate experience or additional education. You must provide transcripts.
- AND-

MINIMUM QUALIFICATIONS FOR GS-12 GRADE LEVEL:


EXPERIENCE: one full year of specialized experience comparable in scope and responsibility to the GS-11 grade level in the federal service (obtained in either the public or private sectors). This experience MUST include the following: (1) developing and preparing major portions of resource management plans; (2) preparation of specific action plans; (3) identifying research needs, preparation of proposals , and oversight of research; (4) design, develop, test, and implement scientific monitoring protocols; AND (5) developing scientifically credible protection, mitigation, and restoration projects. You must include hours per week worked.

For more information qualifying education or on combining education and experience see OPM Qualification Standards linked below:
Individual Occupational Requirements for Physical Scientist Series, 1301
Group Coverage Qualification Standard for Professional and Scientific Positions


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.

CTAP Statement: Current surplus and current or former displaced Federal individuals who have special priority selection rights under the Agency Career Transition Assistance Program (CTAP) must be well qualified for the position to receive consideration for special priority selection. Well qualified means that the applicant meets the following: OPM qualification standards for the position; all selective placement factors, where applicable; special qualifying conditions that OPM has approved for the position, where applicable; is physically qualified with reasonable accommodation, where appropriate to satisfactorily perform the duties of the position upon entry; and is rated by the organization at least at the well qualified level on all competencies. Federal employees seeking CTAP eligibility must submit proof that they meet the requirements of 5 CFR 330.605(2) - CTAP This includes a copy of the agency notice, a copy of most recent Performance Rating, and a copy of most recent SF-50 noting current position, grade level & duty location.

Education

To qualify based on education, you must submit a legible copy of transcripts from an accredited institution with your name, school name, credit hours, course level, major(s), and grade-point average or class ranking. Transcripts do not need to be official, but if you are selected for this position and you used your education to qualify, you must provide official transcripts before you begin work.

If you are using education completed in foreign colleges or universities to meet qualification requirements, you must show that your education credentials have been evaluated by a private organization that specializes in interpretation of foreign education programs and such education has been deemed equivalent to that gained in an accredited U.S. education program; or full credit has been given for the courses at a U.S. accredited college or university.

Additional information

A selectee receiving a first appointment to the Federal Government (Civil Service) is entitled only to the lowest step of the grade for which selected. The display of a salary range on this vacancy shall not be construed as granting an entitlement to a higher rate of pay.

This announcement may be used to fill additional positions if identical vacancies occur within 90 days of the issue date of the referral certificate.

Physical Demands: This position may require strenuous physical activity including periods of standing, walking, climbing, and lifting and carrying heavy objects. Some activities will occur in physically dangerous areas or settings. Documentary research and report writing work is sedentary, which entails the ability to concentrate and write for long periods of time.

Working Conditions: Work is performed both indoors and outdoors in all types of weather, Assignments may be performed in potentially hazardous areas including steep slopes, rocky terrain, volcanoes, caves, fire lines, arctic environments, swamps, deserts, and forests. Flying in fixed-wing aircraft and helicopters is possible.

The National Park Service has determined that the duties of this position are suitable for telework only during an emergency or natural disaster.

Documentation for the Land Management Workforce Flexibility Act (LMWFA) eligibility, You must submit ALL SF-50s and performance information for each period of temporary/term employment that qualifies for LMWFA. Performance documentation can be obtained by contacting the supervisors for the positions you served in during your 24 months. If they did not complete performance appraisals ask them to provide a statement of performance for each period of service. The statement must specify the dates for each employment period and your level of performance consistent with your SF_50s.

Candidates should be committed to improving the efficiency of the Federal government, passionate about the ideals of our American republic, and committed to upholding the rule of law and the United States Constitution.

How you will be evaluated

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

You will be evaluated based on how well you meet the qualifications listed in this vacancy announcement. 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 assessments required for this position. A review of your resume and supporting documentation will be made and compared against your responses to the Assessment Questionnaire to determine if you are qualified for this job. If your resume is incomplete or does not support the responses provided in the Assessment Questionnaire, or if you fail to submit all required documentation, you will be rated 'ineligible', 'not qualified', or your score will be adjusted accordingly. If a determination is made that you have inflated your qualifications or experience, you can lose consideration for this position. Please follow all instructions carefully; errors or omissions can affect your rating.

Resumes must not exceed two single-sided pages and resumes longer than two pages will not be accepted. You may only submit one resume. 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.

Candidates who apply under Competitive Merit Promotion procedures will undergo a quality review to determine if they are highly qualified based on the content of their resume and their responses to the questionnaire. Best qualified candidates will be referred if all required supporting documentation has been provided.

Candidates who apply under Noncompetitive Merit Promotion procedures will undergo a quality review to determine if they are minimally qualified based on the content of their resume and their responses to the questionnaire. Qualified candidates will be referred if all required supporting documentation has been provided.

You will be evaluated on the following competencies:

  • Hydrology
  • Partnering
  • Planning and Evaluating
  • Project Management


In order 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 assessments, including a Panel Resume Review. These assessments measure the critical competencies listed above that are required to successfully perform the job.

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, please submit a statement as to why it is not available. Please indicate if any prior performance appraisals/evaluations were at an acceptable level.

National Park Service

Please visit find a park for additional park information.

Agency contact information

Kelli Ward
Email
kelli_ward@ios.doi.gov
Address
Big Bend National Park
Big Bend National Park
Big Bend National Park, TX 79834
US

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