Physical Science Technician Job Description

A Physical Science Technician turns a physical science program's plans into measurements. In the federal government the title belongs to one Office of Personnel Management series, GS-1311, and OPM's job family standard says the basic title for every position in the series is Physical Science Technician. The series covers technical work in fields such as astronomy, chemistry, geology, physics, geophysics, health physics, metallurgy and oceanography where a specific technician series has not been established. The technician works for a physical scientist, chemist, geologist or engineer who sets the study design and interprets the results.

What gets measured

OPM's description of the occupation reads like a catalog of the natural world. Technicians gather data on ocean currents, earthquakes, floods, climatic changes, geomagnetic patterns and solar occurrences. They collect, prepare or analyze samples of rocks, ice cores, soil, minerals, meteorites, air and water. Field assignments can include paleontology specimens, naturally occurring or induced seismic data, and rock, clay or soil samples. Back at the bench, they run analyses that establish the physical and chemical properties of a sample, then compile and reduce the results for reports and further scientific work.

The field and the lab are tied together by instruments that keep running when nobody is there. OPM notes that technicians gather data personally, through operatives in the field, and from remote locations through automated systems, and that they monitor that information in real time or on a periodic schedule. Some install equipment, power sources and data transmission systems, and they test equipment and review data for anomalies. A dead battery at a remote station or a sensor that has drifted is a technician problem first.

Health physics and safety work

Not every GS-1311 job is about rocks and oceans. OPM's standard describes technicians in health physics who detect, contain and control exposure to hazardous substances, including radiological control work in support of the engineering and maintenance of nuclear reactors, propulsion systems and power plants. Others monitor workplaces for polyvinylchloride, asbestos, mercury and other dangerous substances. In those jobs the measurement protects people directly, and the documentation can matter as much as the reading.

Where the job sits

Positions sit wherever a government program needs physical science data: research laboratories, field science offices, and facilities that run radiation or industrial hygiene programs. The work shifts with the mission: a geophysics project may mean weeks of seismic fieldwork, while a metallurgy lab may keep a technician at the same bench preparing specimens for months. What stays constant is the routine of calibration, careful sampling, clean records and a data file that a scientist can trust without redoing the measurement.

How OPM qualifies applicants

Federal hiring for the GS-1311 series runs on OPM's qualification standard, used together with the Group Coverage Qualification Standard for Technical and Medical Support Positions. Applicants can qualify through education, through experience, or through a mix that the announcement spells out.

On the education side, the GS-1311 standard sets a ladder:

• GS-3: one year of study that included at least 6 semester hours in courses such as physical science, engineering or any branch of mathematics, except financial and commercial mathematics.
• GS-4: two years of study that included at least 12 semester hours in those courses.
• GS-5: a full four-year course of study leading to a bachelor's degree, either with a major in an appropriate physical science or with at least 24 semester hours in those courses.

For positions at GS-4 and above, specialized experience counts too. OPM's examples include work in astronomy, physics, geophysics, chemistry, hydrology, health physics, engineering, electronics, geology, oceanography and metallurgy. Experience as a laboratory mechanic or in a trade or craft can be credited when the work was done in close association with physical scientists and gave the applicant intensive knowledge of scientific principles and methods. That clause matters for machinists, electronics workers and instrument repairers who already spend their days around research equipment.

Safety training

Assignments at hazardous waste sites fall under OSHA's Hazardous Waste Operations and Emergency Response standard, 29 CFR 1910.120. It calls for a minimum of 40 hours of instruction off the site for covered general site workers, plus a minimum of three days of field experience under a trained supervisor, and eight hours of refresher training annually. Lab assignments may fall under other OSHA rules, so read the announcement for the training it names.

Credentials worth pursuing

Technicians who move into radiation protection can pursue registration from the National Registry of Radiation Protection Technologists (NRRPT). Outside radiation protection, the announcement for a given GS-1311 job is the place to check which training or credential, if any, it requires.

Skills that carry the job

• Instrument operation, calibration and basic troubleshooting, from balances and pH meters to spectrometers and data loggers.
• Field logistics: sampling plans, preservation, labeling, shipping and travel in rough conditions.
• Data handling in spreadsheets, scripting tools and geographic information systems, which OPM's job family standard uses as its example of how computer tools changed the work.
• Plain technical writing for logbooks, procedures and data reports.

As a rough guide, entry grades fit applicants with little or no prior lab work, while upper technician grades usually reflect several years of hands-on experience in one discipline. Technicians who finish a physical science degree can later compete for professional scientist series.

The occupation as a whole

O*NET rates projected growth for the broader occupation as average over 2025-2035. That residual occupation includes many kinds of technicians, so the projection describes a broad pool, not the GS-1311 series alone. In the federal executive branch, BLS counted 5,290 jobs in the occupation in May 2025.

Federal science budgets and staffing

NOAA's numbers show how staffing moved at one large federal science agency. A Congressional Research Service brief dated July 28, 2026 reports that NOAA had over 12,200 full-time equivalent employees under its main operations and construction accounts in FY2024, reduced to just over 11,000 in FY2026. CRS says the effects of those staff reductions on NOAA's ability to fulfill its authorities remain unclear. The Administration's FY2027 request proposed cutting about 1,500 more FTEs from those accounts.

Congress has not followed every proposed cut. CRS notes that Congress gave every NOAA line office more than the Administration requested for FY2026, and that the House committee-approved FY2027 report would provide nearly $6.5 billion for the main accounts, about 1% less than the FY2026 enacted amount. As of that brief, no Senate Commerce-Justice-Science bill had been introduced. Separately, CRS says extra NOAA funding from the Infrastructure Investment and Jobs Act and the Inflation Reduction Act ends in FY2026, the fiscal year that closed on Sept. 30, 2026.

Pay in 2026 and 2027

The 2026 General Schedule incorporated a 1% increase effective January 2026. For 2027, Federal News Network reported on Nov. 9, 2026 that most civilian federal employees are on track for a pay freeze, with exceptions for law enforcement and active military members. Nothing is final until the President signs an executive order, which usually happens in December, and Congress can still intervene.

Where AI shows up

The U.S. Geological Survey's artificial intelligence strategy, published in February 2026, describes the bureau using AI to process large volumes of imagery and sensor data, including for earthquake monitoring. The same strategy warns that traditional quality assurance and quality control practices potentially will be insufficient for generative AI outputs. For technicians, that may put checking automated output alongside collecting the sensor and sample data those tools depend on.

Where the job leads

Inside the series, technicians move up by taking on harder methods, more independent fieldwork and lead roles over crews or labs. Outside it, the paths run to professional scientist series once a degree is complete, to radiation protection and safety programs, or to instrument and data roles at contractors and universities that support federal research. Experience across several instruments and methods is useful on each of those paths.

Dear Hiring Committee,

I am applying for the Physical Science Technician position with your geophysics field program. For the past four years I have worked as a laboratory technician in a university rock mechanics lab, and before that I served as an electronics technician in the Navy. Your announcement asks for someone who can keep remote instruments running and turn raw readings into usable data. That is the work I do every week.

In my current role I prepare core samples, run them through our triaxial press and ultrasonic velocity setup, and manage the calibration schedule for the lab's load cells and displacement sensors. Last spring our main data acquisition unit began dropping channels during long tests. I traced the fault to a grounding problem in a new cable run, rebuilt the harness, and wrote a short procedure so the next person would not lose a week to the same issue. Since then the lab has completed every scheduled test series on time.

I also spent two summers supporting a faculty seismic survey in the high desert. I installed and serviced broadband stations, swapped batteries and data cards on a tight route, and kept a field log detailed enough that the principal investigator could match every gap in the record to a cause. I am comfortable with long drives, rough camps and early starts, and I take field safety seriously.

My Navy training gave me the habit of following procedures exactly and documenting everything. My lab work taught me to question a reading that looks too clean. I would bring both to your team.

Thank you for considering my application. I would welcome the chance to talk about your station network and the instruments your crew relies on.

Sincerely, Jordan Reyes