Trusted. Passionate. Science-driven. Meet the 9F team.

The strategic guide of 9F, Marissa manages complex client projects and leads executive responsibilities. As a health scientist, she applies evidence-based solutions to the built environment, specializing in public health risk mitigation, regulatory compliance, worker safety, and climate change resilience.

Marissa co-developed the Health Co-Benefits of the Built Environment (CoBE) Tool at Harvard University, a tool used to quantify the health and climate impacts of building-related energy decisions. She served on the Secretariat for The Lancet COVID-19 Commission’s “Safe Work, Safe School, and Safe Travel” Task Force, and co-authored several reports on future pandemic resilience. In her previous role as a public health regulatory authority and worker safety specialist in Environmental Health & Safety (EH&S), she gained expertise developing programs and overseeing compliance across multiple fields, including food safety and occupational safety.

Marissa received her Master of Public Health in Environmental and Occupational Health from the University of Washington and Bachelor of Science in Environmental Science from Washington State University.

A systems thinker, Natalie crafts individualized project plans and leads strategic program implementation for 9F clients. Her technical acumen in health and safety and her ability to foster meaningful connections allow her to shape strategies and execute programs that improve the well-being of clients. From business development to program management and engagement, she connects scientific concepts with a diverse range of project stakeholders to improve client outcomes.

Natalie has professional experience in the public and private sector assessing regulatory compliance, conducting risk assessment, facilitating root cause analysis, and managing workplace safety programs.

She received her Master of Public Health in Environmental and Occupational Health and Bachelor of Science in Public Health from the University of Arizona.

A healthy buildings practitioner, Maya leverages environmental health principles to support projects across the 9F Health Science Team and sustainability initiatives at 9F. From research and project coordination to data analysis and developing reports and guidance for clients, Maya plays a crucial role in ensuring success and smooth operation for client programs.

Prior to joining 9F, Maya was a research coordinator for Harvard’s Healthy Buildings Program, where she supported the execution of the Global COGfx study and the launch of the Home/Work study. While a graduate student, she utilized data science to create a web tool to support environmental justice.

Maya received her Master of Public Health in Environmental Health from Emory University’s Rollins School of Public Health and Bachelor of Science in Health: Science, Society, and Policy from Brandeis University.

Diligent and detailed, Nicole supports key projects at 9F. Applying public health and sustainability principles to client needs, she is involved from content strategy and program development to reporting and distillation. Nicole leads the execution of the Healthy Buildings Benchmark Survey, an integral part of 9F’s Healthy Buildings Optimization Program, and supports client goals through 9F’s Healthy + Sustainable Buildings initiative.

Prior to joining 9F, Nicole translated scientific findings and environmental public health information into communication tools. Her work has been published in the Journal of Environmental Health, Journal of Climate Change and Health, and featured on NPR, CNN, and Good Morning America.

Nicole received her Master of Public Health in Environmental Health Science and Policy and her Bachelor of Science in Public Health from The George Washington University.

Dr. Jones leverages her expertise in the built environment, statistical analysis, advanced modeling techniques, and environmental sampling to manage the Advanced Analytics Team. She oversees processing, analysis, visualization, and management of building-related data for 9F clients. An accomplished researcher, she is the author of several peer-reviewed publications investigating how building design and operations affect indoor environmental conditions and co-author of publications detailing Harvard’s Global COGfx Study, a one-year study Dr. Jones co-led on the influence of indoor environmental quality on human health, comfort, and performance. Prior to joining 9F, Dr. Jones was an environmental consultant and specialized in COVID-19 mitigation projects for schools and performance spaces.

Dr. Jones received her PhD in Population Health Sciences from Harvard University, Master of Science in Engineering from Princeton University, and Bachelor of Science in Environmental Sciences from the University of California, Berkeley.

An environmental engineer with expertise in data analysis, Dr. Vilardi utilizes statistical analysis and data visualizations to evaluate building health. At 9F, Dr. Vilardi performs building- and portfolio-level analyses that determine the health benefits of building energy reduction measures and manages the implementation of 9F’s wildfire monitoring and alerting system based on indoor and outdoor air quality data. Further, Dr. Vilardi evaluates indoor environmental quality data from field sampling and formulates recommendations to help improve building water quality. Before joining the Advanced Analytics Team at 9F, her previous work focused on water systems and water quality.

Dr. Vilardi received her PhD in Civil and Environmental Engineering and Master of Science in Environmental Engineering from Northeastern University and Bachelor of Science in Civil Engineering from Wentworth Institute of Technology. She is a 2019 National Science Foundation Graduate Research Fellowship recipient and has written peer-reviewed scientific papers for FEMS Microbiology Ecology and Environmental Science and Technology.

As a member of the Advanced Analytics Team at 9F, Morgan translates information into impact. She supports the development of novel analytical methodologies and visualizations, including 9F’s patented H.E.A.A.L. indoor air quality data analysis system. Morgan also contributes to the deployment of H.E.A.A.L. across key clients’ portfolios that contain hundreds to tens of thousands of real-time IAQ sensors.

Prior to joining 9F, Morgan worked as an investigator of food-borne illness and Mpox for the New York City Department of Health and Mental Hygiene and supported the COVID-19 pandemic response at Columbia University.

Morgan received her Master of Public Health in Epidemiology from Columbia University and Bachelor of Science in Chemistry from the University of California, Santa Barbara.

Harry is a data analyst at 9F. He supports analytics needs across the company, with a focus on data from real-time indoor air quality sensors.

From data extraction, cleaning, processing and analysis to online data dashboards, visualizations, and data reports, he distills findings into actionable insights to help our clients monitor and improve the health of their built environment and sustainability efforts.

Prior to joining 9F, his work focused on housing assessments for Native populations.

Harry received his Bachelor of Science in psychology from Grinnell College. He has a certificate in Python programming.

Dr. Cott leads a range of innovative research and development initiatives at 9F. A healthy buildings strategist with extensive experience in advanced quantitative and statistical methods, she pioneers new tools and programs for 9F’s Advanced Analytics team, such as the new building efficiency solution Healthy Energy Insider that advances building sustainability goals without compromising health. Prior to joining 9F, Dr. Cott was a doctoral student at Harvard University, where she focused on new ways of computationally estimating impacts of population-wide environmental exposures and contributed to the University’s work on sustainability.

Dr. Cott received her PhD in Population Health Sciences from Harvard University, Master of Science in Environmental Health from Harvard T.H. Chan School of Public Health, and Bachelor of Arts in Chemistry and Health & Societies from Haverford College.

Amanda Hernandez brings a strong foundation in environmental health, data science, and public policy to her role as Data Analyst at 9F. She holds a Master of Science in Environmental Health degree from the Harvard T.H. Chan School of Public Health and a dual Bachelor’s degree in Geosciences and Environmental Studies from Wellesley College. Prior to joining 9F, Amanda was selected as a Presidential Management Fellow, one of the federal government’s most competitive leadership development programs. She held roles at the U.S. Department of Veterans Affairs and the Centers for Disease Control and Prevention, where she led data-driven quality improvement initiatives and supported national environmental health policy development. At 9F, Amanda leverages her systems-thinking and technical expertise in data analysis, geospatial science, and data visualization on the Advanced Analytics team. Her work transforms vast amounts of data into insights that support decision-making for our clients and advances critical R&D at the company.

A Harvard-trained public health scientist, Linnea’s expertise in the built environment is reflected in her deep understanding of exposure and risk assessment, healthier materials strategies, and climate resiliency planning and response. She leads 9F’s Technical Advisory Services, which includes on-site building reviews and evaluation of building technologies for health impact,from due diligence reporting to strategic guidelines. Applying the fundamentals of environmental health into practice, Linnea oversees research, content development, and program management for 9F clients, with a specialized focus in legal projects and industry partners. Her work is always grounded in scientific evidence.

Linnea is most interested in how the built environment can play a role in reducing negative health effects and she has a deep understanding of air cleaning technologies, healthier materials strategies, and resiliency planning.

Linnea received her Master of Public Health in Sustainability, Health, and Environmental Health from Harvard T.H. Chan School of Public Health and Bachelor of Arts in Biological Chemistry from Grinnell College. She is a WELL AP, Fitwel Ambassador, and Certified Safety Professional.

A core member of the Occupational Health Team at 9F, Eli embodies the science of protecting the health and safety of people in the workplace. She oversees the development and execution of environmental sampling for 9F clients, including indoor environmental quality (IEQ) protocols and field sampling and analysis, primarily in the commercial office environment.

Eli received her Master of Public Health in Environmental Health and Industrial Hygiene from the University of Minnesota School of Public Health and Bachelor of Arts in Biology and Environmental Studies from St. Olaf College. She is a Certified Industrial Hygienist.

Dr. Cadet is a medical consultant for 9F. As an Occupational and Environmental Medicine Physician, she provides high-quality clinical care and promotes a healthy workforce through injury prevention and disability management. She is a former US Air Force Flight Surgeon and Aviation Medical Examiner for the FAA and has held Employee Health Medical Directorship positions in the civilian sector.

Dr. Cadet received her Master of Public Health in Occupational Health at the Harvard T.H. Chan School of Public Health, MD from the University of Miami Miller School of Medicine, and Bachelor of Science in Biomedical Science from the University of South Florida.

An environmental health and industrial hygiene expert, Dr. McDevitt has expertise in the airborne transmission of respiratory viruses. He performs research on infectious disease transmission and intervention centers on developing novel methods for the assessment of microbial aerosols using molecular and microbiology techniques. Dr. McDevitt was an active duty member in the U.S. Air Force and served on the faculty at Harvard. He is a diplomat for the American Board of Industrial Hygiene.

Dr. McDevitt received his PhD in Environmental Health Sciences and Master of Health Science in Industrial Hygiene from Johns Hopkins University and Bachelor of Science in Environmental Health from West Chester University of Pennsylvania.

Adeptly managing two intersecting dimensions of 9 Foundations, Katie directs the day-to-day administration of 9F and shapes the strategic operations that propel the company forward. An expert at high-level needs and long-term planning, she oversees 9F’s finance and human resource development. She is the primary point of contact to the CEO, coordinating business priorities and time management. Her organizational prowess and acute attention to detail make her an integral member of the 9F team.

Katie has more than a decade of administrative experience, having successfully supported several executive and operational teams in various industries before joining 9F. She received her Master in Business Administration from Walden University and Bachelor of Arts in Marketing from Siena College.

Kristen supports strategic operations at 9F. She maintains human resources projects and onboarding processes. Solutions-oriented with an acute attention to detail, her positivity is felt company-wide, particularly when executing team-building experiences. An instrumental part of innovation at 9F, Kristen is involved in every step, from the implementation of new internal practices to the dissemination of external 9F communications programming.

Kristen studied biology at Hofstra University. She is a certified yoga instructor.