Senior Tunneling Project Engineer - Lead Underground Infra

Mott MacDonald; Los Angeles (CA); On-site; USD 148,000 - 181,000; Full time

Benefits offered by this job

401k plan

Medical insurance

Dental insurance

Vision insurance

Disability insurance

Parental leave

Paid holidays

PTO

Life insurance

Job summary

Mott MacDonald in Los Angeles is seeking an accomplished civil engineer to lead tunnel and underground design across concept to detailed stages, delivering safe, efficient infrastructure for major transportation programs.

You will mentor junior engineers, review technical work, and collaborate with multidisciplinary teams while applying PLAXIS, Civil 3D, and BIM tools. The role emphasizes safety, quality, and delivering value to clients.

Qualifications

• Bachelor’s degree in Civil Engineering or equivalent; Master’s preferred.
• PE / P.Eng. license required or obtainable within defined timeframe.
• 8–12+ years of tunneling/underground experience across major projects.
• Experience delivering Transportation, Water/Wastewater, Energy sectors.
• Strong tunnel/underground design proficiency and standards knowledge.
• Experience with major engineering tools and software listed above.
• Ability to lead design reviews and manage risk, quality, and technical performance.
• Excellent communication and collaboration skills; mentoring capability.
• Experience supporting project management activities is a plus.

Responsibilities

• Deliver technical design and analysis for tunnels and underground structures across concept, preliminary, and detailed design phases.
• Support large tunneling and underground infrastructure projects, especially major transportation programs.
• Provide technical leadership within project teams and resolve complex engineering challenges.
• Review and validate calculations, reports, drawings, and specs for compliance with codes and standards.
• Apply tools like PLAXIS, BIM, Civil 3D to improve design efficiency and performance.
• Coordinate with multidisciplinary teams, clients, and stakeholders to deliver practical solutions.
• Contribute technical input to proposals and bids, supporting business development.
• Mentor and guide junior engineers, promoting knowledge sharing.
• Stay informed on emerging technologies and industry trends and apply innovations.
• Lead health, safety, and wellbeing efforts and promote safe practices.
• Champion company values, code of conduct, inclusion and diversity.

Skills

Leadership

Mentoring

Communication

Collaboration

Risk & Quality

Education

Bachelor's degree in Civil Engineering

Master's degree preferred

Tools

PLAXIS

SAP2000

Strand7

RS2/RS3

AutoCAD Civil 3D

MicroStation

BIM platforms

Job description

Mott MacDonald in Los Angeles is seeking an accomplished civil engineer to lead tunnel and underground design across concept to detailed stages, delivering safe, efficient infrastructure for major transportation programs.

You will mentor junior engineers, review technical work, and collaborate with multidisciplinary teams while applying PLAXIS, Civil 3D, and BIM tools. The role emphasizes safety, quality, and delivering value to clients.