Senior Engineering Geologist

Mott MacDonald

3d•Hybrid

About The Position

Mott MacDonald is seeking a California-licensed Certified Engineering Geologist (CEG) to join their Los Angeles office. This role is pivotal in strengthening and expanding the engineering geology capability across California, supporting major infrastructure and transportation programs. The position involves working within high-performing, multidisciplinary teams on technically complex projects spanning planning, design, and construction. It is ideal for an experienced practitioner who enjoys applying geological expertise to real-world challenges, mentoring others, and contributing to infrastructure that benefits the public and society.

Requirements

Certified Engineering Geologist (CEG), State of California (required)
10+ years of professional experience in engineering geology, primarily within a consulting environment
Bachelor’s degree in Geology, Engineering Geology, Geological Engineering, or a related discipline
Demonstrated experience supporting large infrastructure or linear projects in complex geological and seismic environments
Strong knowledge of California geological conditions, regulatory frameworks, and professional practice standards
Proven ability to work independently while contributing effectively within multidisciplinary project teams
Excellent written and verbal communication skills, with the ability to convey complex geotechnical and geological concepts clearly
Experience supporting rail, transportation corridor, or major infrastructure programs
Background working with large consultancies, public agencies, or major infrastructure owners
Confidence providing technical leadership, peer review, and client-facing support on complex projects

Nice To Haves

Master’s degree preferred

Responsibilities

Provide engineering geology leadership and technical input across a broad range of infrastructure projects, including transportation, rail, coastal, water, and major civil works.
Plan, undertake, and interpret geologic and geotechnical investigations, including field mapping, core and borehole logging, desk studies, and interpretation of complex datasets.
Prepare, review, and approve engineering geology and geotechnical reports, technical memoranda, hazard assessments, and design recommendations.
Identify, assess, and mitigate geologic hazards such as landslides, slope instability, faulting and seismic risk, liquefaction, coastal erosion, and ground movement.
Integrate geological conditions into design development, providing guidance on foundations, earthworks, excavation support, retaining systems, and resilience measures.
Ensure work is delivered in accordance with California regulatory requirements, professional standards, and established quality management and assurance systems.
Collaborate closely with geotechnical engineers, civil and structural designers, planners, and construction teams to deliver coordinated, risk-informed solutions.
Engage confidently with clients, contractors, regulators, and stakeholders, supporting technical discussions, reviews, and approvals.
Provide mentorship and technical guidance to junior and mid-level staff, supporting capability development and knowledge sharing.
Contribute to proposals, bids, and work-winning activities, including scope development, methodology, and technical review, as appropriate.