SENIOR GEOTECHNICAL FIELD TECHNICIAN (ENGINEERING TECHNICIAN III)

State of Illinois•Springfield, IL
•$4,159 - $7,187•Hybrid

About The Position

The Senior Geotechnical Field Technician (Engineering Technician III) conducts field testing and monitors construction of embankments, subgrades, aggregate courses, and in-place reclamation and recycling to ensure compliance with applicable test procedures and contract specifications and to investigate construction problems. The position also performs investigative or quality assurance nuclear density testing on hot-mix asphalt (HMA). The role is with the Illinois Department of Transportation’s Office of Highways and Intermodal Project Implementation, Region 4/District 6/Bureau of Project Implementation. It is based in Springfield, Illinois, with a hybrid schedule of one to five days per week in the office depending on operational needs. The listed work hours are 8:00 a.m. to 4:30 p.m., Monday through Friday. The position requires district-wide and overnight travel, field work in varied weather and on roadways open to traffic, overtime and occasional night work, and may involve 24-hour on-call coverage as the district’s secondary nuclear gauge emergency contact.

Requirements

  • Completion of two years of college in civil engineering technology, pre-engineering, or a job-related technical/science curriculum, plus 30 months of engineering experience; or six years of engineering experience.
  • Successful completion of IDOT’s S-34 Radiation Safety and Density by the Nuclear Method training, or equivalent training.
  • Current IDOT QC/QA certification for HMA Density, or HMA Level I Technician certification with the HMA Density component.
  • Completion of IDOT’s S-33 Geotechnical Field Testing and Inspection within 12 months of appointment.
  • Valid driver’s license.
  • Ability to travel district-wide and overnight.
  • Ability to perform field work in varied weather conditions and on construction projects, including roadways open to traffic; ability to lift 50 pounds and traverse slopes and rough terrain.
  • Availability for overtime and occasional night work.
  • Successful completion of a pre-employment physical, pre-employment drug and alcohol screening, and background check.

Nice To Haves

  • Strong communication skills.

Responsibilities

  • Perform density testing on a variety of materials, evaluate subgrade stability, and evaluate borrow materials.
  • Monitor embankment, subgrade, aggregate course, backfill, and recycling/reclamation construction activities and identify non-compliant conditions.
  • Train and support district and local agency construction staff in density testing and geotechnical construction testing and inspection procedures.
  • Assist the Nuclear Density Supervisor with administration of the district nuclear gauge inventory and with training and certifying district nuclear gauge operators.
  • Review field test results and enter data into the department’s materials tracking software.
  • Perform duties in compliance with departmental safety rules and in a manner conducive to fair and equitable treatment of all employees.
  • Perform other duties as assigned.

Benefits

  • Health insurance
  • Life insurance
  • Vision insurance
  • Dental insurance
  • Pension plan
  • 12 weeks of paid maternity/paternity leave
  • Deferred Compensation Program and other pre-tax benefit programs, including medical and daycare
  • 12 paid sick days annually
  • 10 paid vacation days during the first year, with the opportunity to earn up to 25 paid vacation days annually
  • 3 paid personal days annually
  • 13–14 paid holidays annually, based on start date
  • Tuition reimbursement
  • Employee Assistance Program and/or mental health resources
  • Monday–Friday work schedule
  • Flexible work schedules in several program areas, including flexible time and hybrid scheduling
  • Extensive training and career advancement opportunities
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service