Jobs · Engineering · California

Senior Project Engineer Tunnels

Mott MacDonald · Los Angeles, CA · 1 mo ago
Engineering$148k–$181k/yrFull-time

Key Responsibilities

  • Deliver technical design and analysis for tunnels and underground structures across concept, preliminary, and detailed design phases.
  • Support and contribute to the delivery of large-scale tunneling and underground infrastructure projects, particularly major transportation programs.
  • Provide technical leadership within project teams, resolving complex engineering challenges and ensuring high-quality outcomes.
  • Review and validate engineering calculations, reports, drawings, and specifications to ensure compliance with applicable codes, standards, and best practices.
  • Apply advanced engineering tools, software, and methodologies (e.g., PLAXIS, BIM, Civil 3D) to improve design efficiency and project performance.
  • Cook up with multidisciplinary teams, clients, and stakeholders to clarify requirements and deliver practical, cost-effective solutions.
  • Contribute technical input to proposals and bids, supporting business development and project acquisition efforts.
  • Mentor and provide technical guidance to junior engineers, supporting capability development and knowledge sharing within the team.
  • Stay informed on emerging technologies and industry trends, incorporating innovative approaches where appropriate.
  • Lead by example in health, safety, and wellbeing, promoting lessons learned and modeling positive safety behaviors.
  • Champion the organization’s values, code of conduct, and inclusion and diversity, fostering a collaborative and inclusive working environment.

Candidate Qualifications

  • Bachelor’s degree in Civil Engineering or equivalent (Master’s degree preferred).
  • Professional Engineer (PE / P.Eng.) license required or ability to obtain within a defined timeframe.
  • 8–12+ years of experience in tunneling, underground structures, or related heavy civil infrastructure projects.
  • Proven experience delivering projects across Transportation, Water/Wastewater, Energy, and other infrastructure sectors.
  • Strong technical proficiency in tunnel and underground design principles, standards, and methodologies.
  • Experience with engineering software and tools such as PLAXIS, SAP2000, Strand7, RS2/RS3, AutoCAD Civil 3D, MicroStation, BIM platforms, and related analysis tools.
  • Solid understanding of geotechnical, structural, and environmental considerations in underground works.
  • Demonstrated ability to lead technical design reviews and manage risk, quality, and technical performance on multidisciplinary projects.
  • Strong communication and collaboration skills, with a proven ability to mentor and develop junior engineers.
  • Experience supporting project management activities such as scheduling, budgeting, and technical reporting is an asset.

Benefits & Reward

  • Comprehensive benefit package that includes 401k, medical, dental and vision insurance, short-term/long-term disability, paid holidays, PTO, parental leave, and company paid life insurance.
  • Individual pay is determined based on several factors such as work location, education, experience, and unique skills.
  • The expected salary for this position is $148,000 - $181,000.

Collaboration at Our Core

  • Hybrid approach centers on an in-office culture, with most of your time spent collaborating face-to-face and a minimum of three days per week in the office.
  • Balance flexibility with connection, so you and your manager can choose how to meet client, team, and personal commitments.

Equal Opportunity

  • We seek to promote fair employment procedures and practices to ensure equal opportunities for all.
  • We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

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