Every building, bridge and dam sits on soil. You are the one who decides whether the soil can take it.
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What you earn and what it costs to get there.
Licensed and experienced
$100,840
First job out of college
$68,240
Principal or firm owner
$163,220
The federal wage survey has no separate line for this job. It counts geotechnical engineers inside Civil Engineers, where the national median is $100,840 a year and the bottom tenth start near $68,240. Geotechnical work generally sits at or slightly above the civil average because fewer people do it.
$68,000 to $80,000
Staff engineer at a geotechnical consulting firm
Private consulting pays more at the start. State transportation departments pay less but come with a pension and count toward Public Service Loan Forgiveness.
$10,000 to $20,000
Typical jump once you become a licensed professional engineer
You cannot stamp and seal a foundation report without it, and sealed reports are what clients pay for. It is the clearest single pay step in the career.
Tuition, fees, exams and kit. Not rent, food or travel
The low end is a community college transfer into an in state public engineering degree, then a master's covered by a research or teaching assistantship, which is common in this field, plus the two engineering exams. The high end is a full price out of state bachelor's degree and a master's you pay for yourself at $15,000 to $30,000 a year. The exams are the Fundamentals of Engineering test at $225 and the Principles and Practice of Engineering test at about $425, each with a state board fee on top. Many firms pay those exam fees and give you study time, so ask about it in the first job interview.
File the FAFSA (Free Application for Federal Student Aid) each year. Many firms pay the exam fees and give you study time, so ask about that in your first job interview.
Employer-paid licensing
Exam fees, review courses and professional dues are standard perks at consulting firms.
Public Service Loan Forgiveness
State, county and federal engineering jobs qualify, cancelling what is left of your federal loans after 10 years of payments.
Field per diem
Site investigation work away from the office usually comes with a daily allowance.
A pension in government work
State transportation departments are among the last employers offering defined-benefit plans.
The exact path from high school to qualified.
A civil engineering degree, then a specialization, then a license.
High school
Grades 11 and 12
Calculus, physics and chemistry. Take drafting or computer-aided design if your school offers it.
Bachelor's degree in civil engineering
4 years
Accredited by ABET (the Accreditation Board for Engineering and Technology). Soil mechanics and foundation design are usually third and fourth year courses.
Fundamentals of Engineering exam
Final year
Six-hour computer-based test, normally taken in your final year. Passing makes you an engineer in training.
Master's degree
1 to 2 years
One to two years focused on soil and rock. Not legally required, but most geotechnical engineers have one and many firms expect it.
Experience, then the license
4 years
Four years working under a licensed engineer, then sit the Civil: Geotechnical paper of the Principles and Practice exam and apply to your state board.
Calculus and algebra
Engineering programs assume both from day one.
Physics
Soil mechanics is forces, stresses and water pressure.
Chemistry
Soil chemistry matters for contamination and for concrete in the ground.
Earth science or geology
You will be reading geological maps for the rest of your career.
There is no national engineering license here. Each state and territory runs its own board and issues its own license as a professional engineer. The two exams come from NCEES (the National Council of Examiners for Engineering and Surveying) and are the same everywhere, so moving between states is paperwork rather than starting over. Without the license you can do the analysis but somebody else has to sign it, and signing is what the firm bills for.
Very few universities offer a bachelor's degree called geotechnical engineering. You take a civil engineering degree, then specialize through elective courses, a master's, and the work you take on. The specialty groups are real though: the Geo-Institute of the American Society of Civil Engineers has more than 13,000 members and runs the conferences and standards this branch of the field lives by.
Things you don't need, but that help.
Professional engineer license
The one that matters. Civil: Geotechnical is the matching exam paper.
Numerical modeling
Finite element and limit equilibrium software for slopes, walls and settlement.
Earthquake engineering
Liquefaction and seismic site response. Essential in California and the Pacific Northwest.
Ground improvement
Stone columns, grouting, soil mixing. Specialist contractors pay well for it.
Drilling and field supervision
Being the person who can run a site investigation properly makes you useful from year one.
A summer at a drilling or testing firm
Logging soil samples for a season teaches more than a semester of lectures.
Driver's license
Site investigations are scattered and you drive yourself there.
Technical writing
The report is the product. A clear one gets read and acted on.
GIS (geographic information systems) and mapping
Boring locations, geology overlays and site plans all live in it.
Two things drive hiring: construction and repair. New buildings, bridges, highways, wind farms and data centers all need a foundation investigation before anyone pours concrete. Then there is the older half of the job, looking at aging dams, levees, retaining walls and slopes that are moving. The American Society of Civil Engineers grades the country's infrastructure every few years and the marks are middling, which is another way of saying there is decades of work in fixing it.
Day to day, pros and cons, where you'd work.
Office days: read boring logs and laboratory results, calculate how far a footing will settle and whether a slope will stand up, then write the report that tells the architect what foundation to use. Field days: stand at a drill rig in a hard hat while a crew pushes samplers into the ground, log what comes up, and photograph it. During construction you go back to check that what is being built matches what the ground actually is.
The good
The hard parts
Things people don't tell you.
The Leaning Tower of Pisa tilts because it was built on soft ground that settled unevenly on one side. It is a geotechnical failure that became a tourist attraction, and engineers spent the 1990s stabilizing it by removing soil from the high side.
One of the oldest field tests still in daily use drops a heavy weight onto a sampler and counts how many blows it takes to drive it a set distance into the ground. The count goes straight into foundation design.
A site investigation samples a tiny fraction of the ground under a building. Everything between the boreholes is professional judgement, which is why geotechnical reports are full of carefully worded uncertainty.
The American Society of Civil Engineers publishes a report card on America's infrastructure every few years, covering dams, levees, bridges and roads. The grades have been mediocre for decades, and dams and levees are squarely geotechnical problems.
Last checked September 2026. Pay figures are typical full-time annual amounts in United States dollars, based on Bureau of Labor Statistics wage data and published pay scales. They vary by state, employer and experience. Tuition is for in-state students at public schools unless the card says otherwise.