Staff Seismic Engineer

Staff Seismic Engineer

Employer:  Geotechnical Resources Inc (GRI)

Job Location: (1) Tigard Headquarters (16520 SW Upper Boones Ferry Rd, Suite 100, Tigard, OR 97224), and (2) site in Vancouver, Washington (1101 Broadway St Suite 215, Vancouver, WA 98660)

Title:  Staff Seismic Engineer


  • Perform nonlinear numerical modeling with FLAC 2D Dynamic:
    • Incorporate structural pile elements,
    • Calibration to cyclic direct simple shear testing and centrifuge testing,
    • Utilization of PM4 SAND constitutive models.
  • Perform liquefaction analysis using Idriss and Boulanger methods;
  • Evaluate soil structure interaction of dock structures in liquefiable soil;
  • Perform site response modeling;
  • Perform site specific probabilistic seismic hazard analysis;
  • Incorporate updates/new ground motion models into Python or Matlab;
  • Perform and manage field explorations;
  • Manage and coordinate work with drilling subcontractors;
  • Collect soil, rock, and groundwater samples and data; evaluate and interpret data collected;
  • Perform lab testing, including Atterbergs, Consols, Direct Simple Shear, Proctor, and Triaxial;
  • Perform settlement analyses;
  • Conduct pile design;
  • Perform slope stability analysis and design;
  • Write simple reports; draft more complex reports for Senior Engineer review, such as site investigations, site assessments, and remediation activities;
  • Observe construction activities on site to ensure they meet design criteria;
  • Prepare concise and timely site visit reports;
  • Communicate on project sites with contractors/subcontractors;
  • Identify and understand unsuitable conditions in the field, apply knowledge to real-world situations on project sites to make recommendations;
  • Understand proper piles installation, anchor testing, fill placement, drilled shafts, and apply knowledge to real-world conditions on project sites to identify inappropriate or unsuitable conditions/ application, and make recommendations in real-time;
  • Generate geologic maps and cross-sections with assistance of Drafting Staff and/or other Geologic or Engineering Staff;
  • Understand code requirements for seismic analysis with a focus on OSSC, ASCE 7, AASHTO, and the ODOT GDM.
  • Attend internal and external project meetings;
  • Actively engage in mentorship activities with senior GRI staff;
  • Attend professional society meetings;
  • Option to work from home up to 40% of the time, within commuting distance in GRI’s MSA;
  • Travel up to 20% of time; position requires work (e.g. monitoring drilling, collecting soil samples, conducting field test, checking other construction activities) at various locations throughout Oregon and SW Washington that cannot be anticipated ahead of time because the projects have not yet been contracted.



Master’s degree or equivalent in civil engineering with a geotechnical focus, including specific Master’s level or higher coursework in:

  • Advanced Soil Mechanics,
  • In-Situ Testing,
  • Slope Stability,
  • Seismology, and
  • Earthquake Engineering (Geotechnical Focus).

 2 years of relevant work or graduate level university experience. Experience must include:

  • 1 year working with ITASCA FLAC 2D, including use of FISH language;
  • 1 year working with Soil Structure Interaction (SSI) of dock structures in liquefiable soils, including evaluation of kinematic and inertial loading.

All education, training, and experience may be gained concurrently.  To apply, visit:, job no. 17