Project Engineer Tunnels

At Mott MacDonald, we trust our brilliant people to do brilliant things in engineering, management, and development services, supporting multisector project work in over 150 countries. As one of the largest employee-owned companies in the world, we pride ourselves on delivering exceptional outcomes through our network of 20,000+ talented consultants. With sustainability and innovation at the heart of our sectors in North America—including Buildings, Energy, Transportation, and Water—we empower our people to excel, learn, and grow, offering diverse opportunities to contribute to career-defining work.

About the role

We are seeking a Tunnels Engineer to support the design and delivery of major tunneling and underground infrastructure projects, primarily within the transportation sector but also supporting water, energy, and other infrastructure programs. Working from our Austin office in a hybrid capacity, this role focuses on technical design leadership, project delivery, and mentoring within multidisciplinary teams to deliver safe, innovative, and high-quality solutions across all phases of project development.

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.
• Coordinate 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.

Requirements

• 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.
• 7+ 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.
• 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

• Employee ownership with a direct connection to company success through personal and group performance bonuses.
• Comprehensive benefits package including 401k, medical, dental, and vision insurance.
• Short-term/long-term disability, paid holidays, PTO, parental leave, and company-paid life insurance.

Pay

The expected salary for this position is $115,000 - $141,000.

Schedule

Hybrid role based in Austin, TX, with a minimum of three days per week in the office. Full-time position.

Mott MacDonald is an equal opportunity employer. We encourage individual expression and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.