
Senior Staff Geotechnical Engineer
Langan Engineering and Environmental Services, LLC
Seattle, WAFull-time$81–110K/yrPosted 4mo agoStill listed today
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At a glance
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Requirements
Credentials this posting asks for.
Job overview
Langan is seeking a Senior Staff Geotechnical Engineer for its Seattle team. The role supports land development projects through geotechnical design, investigations, construction oversight, seismic analysis, and technical reporting. The engineer will also coordinate fieldwork, develop numerical models, translate results into design recommendations, and contribute to business development. Fieldwork is required, and the position partners with project managers and cross-functional teams.
Skills & qualifications
Skills
Qualifications
Benefits
Full job description
Langan provides expert land development engineering and environmental consulting services for major developers, renewable energy producers, energy companies, corporations, healthcare systems, colleges/universities, and large infrastructure programs throughout the U.S. and around the world. Our employees collaborate seamlessly among 50+ offices and gain valuable hands-on experience that fosters career growth. Langan culture is entrepreneurial from advancing innovative technical solutions, to participating in robust training and knowledge sharing, to making progressive change within the communities we live and work.
Consistently ranked among the top ten “Best Firms to Work For” and Engineering News-Record’s top 50 firms worldwide, Langan attracts and retains the best talent in the industry. Employees thrive at Langan, a firm that fosters an inclusive and supportive work environment for all; prioritizes wellbeing, health, and safety; encourages volunteerism and philanthropy; offers workplace flexibility, along with carbon-neutral office spaces; and empowers individuals to contribute their skills and knowledge to make impactful contributions.
Job Summary
Langan is seeking a Senior Staff Geotechnical Engineer to join its collaborative team in Seattle, WA. This individual will serve a key function providing the preparation of technical reports, specifications, plans, designing foundations, retaining walls, and other geotechnical aspects of construction. In this role, you will have the opportunity to partner cross-functionally on premier land development projects.
Job Responsibilities
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Design earth structures, deep foundations, support of excavation and underpinning systems;
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Assist project manager with field work coordination and project management support;
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Scope and oversee geotechnical investigations and construction projects, and periodically perform inspections of geotechnical construction where needed;
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Coordinate investigations and assist in geotechnical report writing;
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Prepare standard logs and field forms, including drilling and test pit logs, field investigation dailies, and chain of custody logs;
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Perform geotechnical seismic hazards analyses, 1D and 2D site-response, and soil-structure-interaction evaluations for projects utilizing FLAC, PLAXIS, and other geotechnical modeling software for analysis and design.
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Develop and execute numerical models with a focus on seismic analyses and soil-structure interaction including but not limited to:
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Calibrate the model including element- and system-level evaluations,
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Develop appropriate model space and boundary conditions,
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Perform model response and diagnostic evaluations,
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Post-processing and presentation of model results, and
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Translation of model response to actionable geotechnical design recommendations.
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Support business development and marketing activities, including preparation of cost proposals and presentations to existing and prospective clients.
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Fieldwork is required; and
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Perform other duties as requested.
Qualifications
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Bachelor's degree in Civil or Geotechnical Engineering required, Master's degree in Geotechnical Engineering strongly preferred;
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4+ years of related geotechnical experience in geotechnical investigations and construction inspections;
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FE/EIT certification preferred;
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Office experience with investigation and field work coordination, geotechnical reports, and specification writing;
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Prior field experience in earthwork, driven and drilled pile construction, load testing, footings subgrade and backfill inspection, ground improvements, retaining wall design and construction, and excavation support system design and inspection;
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Desired software knowledge: gINT, Slide/SLOPE/W, PLAXIS, LPILE, GRLWEAP, MSEW, SHAKE;
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Excellent written and verbal communication skills;
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Strong attention to detail with excellent analytical, multitasking, and judgment capabilities;
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Ability to effectively work independently and in a team environment;
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Ability to perform field work as required; and
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Possess reliable transportation for client meetings and job site visits and a valid driver’s license in good standing.
Langan provides a rich array of programs and benefits to help its employees advance their careers and enhance the quality of their lives. Our comprehensive compensation package includes: full-time employment company paid medical, dental, and vision coverage; life insurance, short- and long-term disability insurance, and paid pregnancy disability leave; 401(k)/Roth with company match; paid time off including parental and military leave; employee referral and professional license bonuses; and educational reimbursement.
Langan offers employee resource groups; flexible work schedules; extensive training; wellness programs; buddy and mentoring programs; and much more!
Langan is committed to providing equal employment opportunities to all qualified applicants and employees, including individuals with disabilities and protected veterans. We believe that an inclusive workplace is essential for the well-being and success of our employees. Certain US jurisdictions require Langan to include an estimate of salary or hourly ranges. Actual compensation may vary based on factors such as related work experience, location, market conditions, education/training, certifications and other credentials, as well as applicable knowledge and skills. Certain roles may be eligible for overtime and participation in the firm's annual bonus and performance review program. Bonuses are discretionary and based on individual job performance and the profitability of the firm. Employees are also eligible to receive up to 20 days of paid vacation time, 10 days of paid sick time and 10 paid holidays throughout the year. Eligibility and actual paid time off may vary based on local law and factors such as hours worked, related work experience and level.
Pay Range $80,500—$110,000 USD
Please review our Applicant Privacy Notice at Collection to understand how we collect, use, and retain your personal information: https://www.langan.com/langan-notice-at-collection
How this job compares
Set against the 1,507 open Civil Engineering jobs on Olive Jobs, counted November 11, 2026.
- Pay
- This posting$81–110K/yr
- US median$100–140K/yr478 salary ranges
This range's midpoint, $95K, is 23% below the US median midpoint ($123K) — in the middle half of Civil Engineering salary ranges across the US.
- Openings
- Olive Jobs lists 25 open Civil Engineering jobs in Washington and 1,507 across the US. 4% of them nationwide are listed as remote or flexible.
- Hiring the most in Washington
- RH2 Engineering3 open
- TYLin3 open
- DOWL2 open
- Experience
- This posting asks for at least 4 years of experience; Civil Engineering postings that state a minimum ask for 7 years at the median (779 postings).
- Education
- This posting asks for a bachelor's degree; 738 of the 1,507 open Civil Engineering jobs (49%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 11, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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