Human Factors Principal Scientist (Ph.D. or M.A./M.S.)
Exponent
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Menlo Park, CA · Posted November 10, 2026
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Where Menlo Park, CA ranks
Where Menlo Park, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #5Best cities for AI-skill jobs in the West Coast32% · of 71
- #6Best cities for financial services pay after cost of living$164k · of 33
- #6Best cities for AI-skill jobs32% · of 100
- #7Best cities for entry-level jobs that want AI skills in the West Coast21% · of 54
- #11Best all-round cities for AI careers in the West Coast75 / 100 · of 39
- #12Best cities for pay after cost of living in California$169k · of 32
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About the job
About Exponent
Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most profoundly unique, unprecedented, and urgent challenges.
Our vision is to engage multidisciplinary teams of science, engineering, and regulatory experts to empower clients with solutions that create a safer, healthier, more sustainable world. For over five decades, we've connected the lessons of past failures with tomorrow's solutions to advise clients as they innovate technologically complex products and processes, ensure the safety and health of their users, and address the challenges of sustainability.
Join our team of experts with degrees from top programs at over 500 universities and extensive experience spanning a variety of industries. At Exponent, you’ll contribute to the diverse pool of ideas, talents, backgrounds, and experiences that drives our collaborative teamwork and breakthrough insights. Plus, we help you grow your career through mentoring, sponsorship, and a culture of learning. Thanks for your interest in joining our team!
Key statistics:
950+ Consultants
640+ Ph.D.s
90+ Disciplines
30+ Offices globally
Our Opportunity
We are currently seeking a Principal Scientist to join our Human Factors Practice in Farmington Hills, MI , Menlo Park, CA , Philadelphia, PA , Phoenix, AZ , or Tampa, FL . Other locations may be considered. In this role, you will lead complex technical investigations, provide strategic guidance to clients, and develop innovative approaches to understanding human behavior, decision-making, performance, and interaction with products, systems, and environments. You will work at the intersection of science, safety, engineering, and litigation, applying rigorous human factors methodologies to help clients solve challenging problems involving product design, accidents, workplace safety, transportation systems, consumer products, medical devices, and emerging technologies.
As a senior technical leader, you will be responsible for generating new business opportunities, mentoring junior staff, publishing thought leadership, and serving as a trusted advisor to clients across a diverse set of industries.
You will be responsible for
Technical Leadership
Lead multidisciplinary investigations involving human performance, perception, cognition, attention, decision-making, ergonomics, and human behavior
Design and oversee human factors studies, experiments, simulations, evaluations, and risk assessments
Apply scientific methods to evaluate accident causation, product use, warnings and instructions, workplace safety, transportation systems, and consumer interactions
Direct project teams conducting data collection, analysis, and interpretation
Develop defensible technical opinions supported by scientific evidence and industry standards
Evaluate emerging technologies and their interaction with human users, including automation, autonomous systems, connected products, and AI-enabled technologies
Client Service & Consulting
Serve as principal investigator and trusted advisor for key clients
Lead large, complex engagements from scoping through final deliverables
Present findings to executive leadership, legal counsel, regulators, insurers, and technical stakeholders
Translate complex technical concepts into clear and actionable recommendations
Litigation & Expert Support
Evaluate human performance issues associated with accidents, incidents, and product liability matters
Develop expert analyses and reports
Support deposition and trial activities
Serve as an expert witness in areas aligned with technical expertise and experience
Business Development
Develop and execute business development strategies within Human Factors and adjacent practice areas
Build and maintain relationships with existing and prospective clients
Identify opportunities for cross-practice collaboration
Prepare proposals, statements of work, and project budgets
Meet individual revenue and utilization objectives
Thought Leadership
Publish technical papers, articles, and conference presentations
Contribute to industry standards committees and professional organizations
Enhance Exponent's reputation through external speaking engagements and technical leadership
Team & Practice Leadership
Mentor and develop consultants, associates, and senior scientists
Assist with recruiting and talent development initiatives
Foster collaboration across engineering, data science, biomechanics, UX, medical device, transportation, and safety disciplines
You will have the following skills and qualifications
Ph.D. in Human Factors, Cognitive Psychology, Experimental Psychology, Industrial/Organizational Psychology, Ergonomics, Cognitive Engineering, Human Systems Integration, or a closely related discipline. M.A./M.S. with relevant experience will also be considered.
Presently legally authorized to work in the United States; no immigration sponsorship or processing required
12+ years of relevant consulting, industry, research, or applied human factors experience
Demonstrated expertise in one or more of the following:
Human performance and decision-making
Human-machine interaction
Product safety
Transportation human factors
Occupational safety
Medical device human factors
Accident investigation and reconstruction
Strong publication record and recognized technical expertise
Experience managing large and complex projects
Proven client relationship management skills
Excellent written and verbal communication skills
Ability to synthesize scientific information into practical business recommendations
Expert witness experience
Consulting experience within a technical, engineering, scientific, or litigation-support environment
Experience supporting matters involving product liability, transportation incidents, workplace injuries, or regulatory investigations
Record of generating and growing client relationships resulting in sustained revenue growth
Professional certifications or leadership roles in HFES, APA, SAE, AAMI, or related organizations
Applicants are encouraged to submit a CV (Curriculum Vitae) with publications (feel free to include publications that are in review or pending) [not restricted to 1 page].
Life @ Exponent
To learn more about life at Exponent and our impact, please visit the following links:https://www.exponent.com/careers/life-exponenthttps://www.exponent.com/company/our-impact
We value and encourage diversity, equity and inclusion across all facets of our firm. Having a team built of people with different backgrounds, skills and perspectives allows us to provide better value to our clients and enjoy an enriched work environment.
Our firm is committed to offering a variety of programs and resources to support health and well-being. We believe that providing competitive benefits, as well as compensation and recognition programs, empowers our staff to do work that makes a difference.
Work Environment
At Exponent, we have found that in-person interactions deepen employee engagement and are crucial for development, for realizing the full potential of our talented and diverse teams, and for building a more inclusive workplace where all have a sense of belonging. In our offices, you can expect a supportive culture and a collaborative, dynamic, multi-disciplinary work environment. Our consultants engage in-person in the office unless they are traveling for client work or other business activities.
We value the rich lives our colleagues enjoy outside of work and understand that work/life balance is critical to our employees and their well-being. Consultants have the autonomy to balance their work and personal schedules so you can meet with clients, visit inspection sites, attend conferences, and make time for priorities outside of work, too. It is this flexible, agile work style and working hours that allow our teams to drive innovation and results in their own ways, while meeting the needs of clients. #LI-Onsite
Compensation
Our consultants are rewarded for their technical and business contributions and have an opportunity to plan for future success and career growth. Exponent's total compensation plan is consistent with its expectations of the quality and quantity of work performed and with the professional standards set by Exponent. At the Manager level and above, total compensation includes base salary, annual bonus, and 401(k) employer contribution of 7% of base salary.
The base salary range for this position is dependent on experience and capabilities, which will be assessed during the interview process.
Salary Range USD $232,500.00 - USD $295,000.00 /Yr.
Benefits you will enjoy
Access benefits information on our Life @ Exponent page:https://www.exponent.com/careers/life-exponent
Exponent is a proud equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, veteran status, disability, sexual orientation, gender identity, or any other protected status.
If you need assistance or accommodation due to a disability, you may email us at HR-Accommodations@exponent.com.
Job Locations US-CA-Menlo Park US-FL-Tampa US-PA-Philadelphia US-NY-New York US-AZ-Phoenix US-MI-Farmington Hills