Project Administrative Assistant

The Opportunity:

Our Water Group in Irvine, California is seeking a Project Administrative Assistant.

Why Tetra Tech:

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.

Your Impact:

Join Tetra Tech to make a real difference. Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.

Essential Job Functions:

• Utilize AI-powered tools to analyze project data, identify trends, summarize findings, and support project reporting and decision-making.
• Leverage artificial intelligence and automation technologies to improve efficiency in document review, information extraction, and administrative workflows.
• Apply AI-assisted tools to review large volumes of technical documents, meeting notes, correspondence, and project records for accuracy, completeness, and key insights.
• Provide administrative and coordination support to project managers and technical teams across multiple projects
• Analyze project metrics, schedules, budgets, and performance data using advanced Excel functions and AI-assisted analytics tools to support project teams.
• Prepare, format, and produce technical reports, proposals, presentations, and other project deliverables in electronic and hard copy formats
• Develop and maintain project documentation including agendas, meeting minutes, and action item tracking
• Utilize MS Excel and MS Word to track project data, schedules, and budgets
• Coordinate schedules, meetings, and logistics for project teams and external stakeholders
• Serve as a point of contact for internal staff, clients, and the public, ensuring professional and timely communication

Required Qualifications:

• Associates or Bachelor’s Degree in Humanities and Arts (English, Communications, etc)
• Experience analyzing project metrics, schedules, budgets, and performance data using advanced Excel functions and AI-assisted analytics tools to support project teams.
• Experience evaluating and validate AI-generated content, reports, and recommendations for accuracy, consistency, and compliance with organizational standards.
• Strong organizational and multitasking skills with the ability to manage multiple priorities and deadlines
• Excellent written and verbal communication skills, including experience interacting with clients, stakeholders, and team members
• High attention to detail and commitment to quality
• Ability to work independently and collaboratively in a fast-paced environment
• Adaptability and a proactive, problem-solving mindset
• Ability to maintain confidentiality and professionalism at all times

Preferred Qualifications

• Experience supporting projects in engineering, consulting, construction, or a related technical field
• Experience coordinating public meetings, community outreach, or stakeholder engagement activities

Physical Requirements:

• Primarily sedentary work in an office environment.

• Prolonged periods of sitting at a desk and working on a computer.

• Occasional standing, walking, and light physical activity.

• May occasionally lift or move items such as files or office supplies up to 15–25 pounds.

Work Environment / Environmental Factors:

• Primarily office-based.

• Standard indoor environmental conditions.

• Moderate noise levels consistent with a typical office setting.

About Tetra Tech:

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting and engineering services for projects worldwide. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

We invite applications from all interested parties.

Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:

LinkedIn: @TetraTechCareers

X (Twitter): @TetraTechJobs

Additional Information

• Organization: 200 IEW