# Senior Staff Geotechnical Engineer at Langan Engineering & Environmental Services

> United States · Staff · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Alanganengineeringandenvironmentalservicesllc%3A4301617009 (read 2026-11-09).

## Facts (observed)

- Company: [Langan Engineering & Environmental Services](https://alderhq.app/companies/langan-engineering-environmental-services)
- Location text: Seattle, WA; Seattle (SEA)
- Where it can be done from (inferred): United States (evidence: "Location: Seattle, WA; Seattle (SEA)")
- Posted: 2026-07-06 (126 days ago)
- First seen by alder: 2026-11-08 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://job-boards.greenhouse.io/langanengineeringandenvironmentalservicesllc/jobs/4301617009
- Skills listed (inferred): Distributed systems

## Pay and sponsorship

- Posted pay: $81k–$110k per year (from the listing's pay field)
- Market band for similar posted roles (Seattle, n 76): p25 $212k, median $223k, p75 $258k

## Description (the employer's text)

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

- Design earth structures, deep foundations, support of excavation and underpinning systems;
- Assist project manager with field work coordination and project management support;
- Scope and oversee geotechnical investigations and construction projects, and periodically perform inspections of geotechnical construction where needed;
- Coordinate investigations and assist in geotechnical report writing;
- Prepare standard logs and field forms, including drilling and test pit logs, field investigation dailies, and chain of custody logs;
- 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.
- Develop and execute numerical models with a focus on seismic analyses and soil-structure interaction including but not limited to:
- Calibrate the model including element- and system-level evaluations,
- Develop appropriate model space and boundary conditions,
- Perform model response and diagnostic evaluations,
- Post-processing and presentation of model results, and
- Translation of model response to actionable geotechnical design recommendations.
- Support business development and marketing activities, including preparation of cost proposals and presentations to existing and prospective clients.
- Fieldwork is required; and
- Perform other duties as requested.
### Qualifications

- Bachelor's degree in Civil or Geotechnical Engineering required, Master's degree in Geotechnical Engineering strongly preferred;
- 4+ years of related geotechnical experience in geotechnical investigations and construction inspections;
- FE/EIT certification preferred;
- Office experience with investigation and field work coordination, geotechnical reports, and specification writing;
- 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;
- Desired software knowledge: gINT, Slide/SLOPE/W, PLAXIS, LPILE, GRLWEAP, MSEW, SHAKE;
- Excellent written and verbal communication skills;
- Strong attention to detail with excellent analytical, multitasking, and judgment capabilities;
- Ability to effectively work independently and in a team environment;
- Ability to perform field work as required; and
- Possess reliable transportation for client meetings and job site visits and a valid driver’s license in good standing.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Alanganengineeringandenvironmentalservicesllc%3A4301617009 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.