Holden oversees the product development and scale up efforts at Osmoses. He received his Ph.D. in chemistry from Stanford, and his B.A. in chemistry and physics and B.Mus. in performance from Oberlin. Holden is an alumnus of the Activate Fellowship.
Francesco Benedetti is a Co-Founder and the Chief Executive Officer at Osmoses. He earned his Ph.D. in chemical engineering from the University of Bologna, Italy, and worked as a Postdoctoral Associate at the Massachusetts Institute of Technology. Benedetti received a 2021 Activate Fellowship, a 2019/2020 MIT Energy Fellowship, and was an NSF I-Corps Entrepreneurial Lead in 2021. In his free time, he enjoys playing rock music on his keyboard, singing, playing basketball, and building communities. He also serves as the President of FAIL! – Inspiring Resilience.
Katherine Mizrahi Rodriguez is a Co-founder and the Vice President of Engineering at Osmoses. She is also a Kavanaugh Postdoctoral Fellow for translational innovation. Katherine earned her Ph.D. at MIT in Materials Science and Engineering (MSE) through the program in Polymers and Soft Matter and received her B.S. also from MIT MSE. She has been recognized with several fellowships and awards including the NSF Graduate Research fellowship, the Ford Foundation Pre-doctoral fellowship, the MIT Ida M. Green fellowship, and the GEM Consortium fellowship.
Zachary P. Smith is an Associate Professor of Chemical Engineering at the Massachusetts Institute of Technology. His research focuses on the molecular-level design, synthesis, and characterization of polymers and inorganic materials for applications in membrane and adsorption-based separations. Prof. Smith has co-authored over 45 peer-reviewed papers and has been recognized with several awards, including the DoE Early Career Award, AIChE 35 Under 35 Award, and the North American Membrane Society Young Membrane Scientist Award, and the DoE Office of Science Graduate Fellowship. He served as a committee member in writing the 2019 National Academies of Sciences, Engineering, and Medicine report on A Research Agenda for Transforming Separation Science. Prof. Smith serves on the Board of Directors for the North American Membrane Society and is on the Editorial Advisory Board of Polymer.
Kristen O’Hara is the Head of HR at Osmoses. She is an accomplished, results oriented people operations professional with more than a decade of experience providing strategic leadership and hands-on execution ushering companies through phases of start-up, growth, and organizational change. Kristen is a successful culture ambassador with demonstrated expertise in cultivating highly collaborative teams, building best-in-class HR infrastructures, developing relationships cross functionally and driving people-forward initiatives to meet business objectives and help teams and organizations thrive. Kristen has earned her SHRM-SCP certification from Society of Human Resources Management and is an avid networker and serial learner. She never turns down a good podcast and enjoys spending time outdoors whether hiking, walking, skiing, beaching or her new (so far unsuccessful) pursuit to master tennis, pickleball and golf. Family is her true passion and she takes every opportunity to spend time with her husband and 2 boys.
Nick Bruno is an R&D scientist with Osmoses. He received his Ph.D. from MIT in 2015 in the lab of Steve Buchwald and worked with M.G. Finn as a postdoctoral associate and research scientist from 2015 – to 2022 developing new materials for membrane applications in collaboration with Ryan Lively. Outside of lab, he’s passionate about woodworking, working on cars, flea markets, and rooting for the ever-terrible Washington Football Team.
Dr. Marina Petsi received her Ph.D. title from the Department of Chemistry (Organic Chemistry Laboratory) in Aristotle University of Thessaloniki in Greece, in 2021. Mrs. Petsi’s up to now academic career as a Ph.D. candidate in Synthetic Organic Chemistry combined with previous work experience as Analytical Chemist has given her the opportunity to broaden her cognitive field and develop new skills. Her main interests include the total synthesis of naturally complex molecular structures like pyrrole-imidazole alkaloids and its extension and application in the field of green chemistry and organocatalysis.
Sam Cox is a member of the chemistry team at Osmoses. He received a B.S. in Chemistry and Philosophy from Northeastern University, with a concentration in Religious Studies. His passions include sustainable infrastructure development, including clean energy. While at Northeastern, Sam gained a variety of experiences in materials chemistry, specifically for green applications. His research interests include polymer synthesis and analytical method development; he is also excited by the growing field of green chemistry. Beyond research, Sam also leads laboratory operations to support research endeavors at Osmoses. In his spare time, Sam enjoys exploring Boston’s vibrant restaurant scene, biking across the city, and expanding his collection of house plants.
Hannah is a recent graduate of Tufts University with a B.S. in Biochemistry. At Tufts, Hannah did research analyzing chemical differences in coffee that was grown under different environmental conditions. Her interests include sustainability, environmental research, and clean energy. Outside of the lab, she enjoys doing yoga and making Spotify playlists.
Aaron Gould is a Process Engineer at Osmoses, with a focus on membrane separations and techno-economic modeling. He holds a B.S. in Chemical Engineering from Tufts University, where he also minored in Computer Science and Economics. Aaron is passionate about the intersection of engineering, technology, and business, with a strong commitment to clean technology. Beyond the spreadsheets, he enjoys running, hiking and playing the guitar.
Seraphin Castelino is a member of the membrane research team at Osmoses. She received a B.S. in chemical engineering from MIT. While at MIT, Seraphin conducted a wide variety of research including chemically modifying siRNA for improved therapeutic applications as well as using mathematical and computational modeling to simulate graphene polymers through turbulent flow. Outside of lab, her interests include tennis, hiking, baking, exploring different foods, and playing board games with friends.
Gia Bharadwaj is a rising senior at the Winsor School in Boston with a growing passion for the role industries can play in sustainability. Last summer, she volunteered in the Al and Trudy Agress Summer Health Corps program at the Beth Israel Deaconess Medical Center, where she discovered her love for science and technology as she shadowed medical procedures. Gia is excited to develop a deeper understanding of market analysis and further explore clean technology this summer. In her spare time, she enjoys listening to music and writing for her school’s newspaper.
Rosemary is a student at Northeastern University studying chemical engineering. Their goal is to help create sustainable technology to better the environment. Rosemary has worked in developing green cement technologies, as well as conducted limited research on how to convert more energy systems to hydrogen fuel. Rosemary plans to continue working in the cleantech field moving forward.
Abaynesh Y. Gebreyohannes is a Senior Membrane Scientist at Osmoses. She has more than a decade-long research experience in developing membranes from material to full-scale prototypes across Europe, the Middle East, and Africa.
She has received numerous grants and awards including Excellence in Membrane Engineering by EFCE, Best Exploitation of Research-Technology & Knowledge Transfer by KU Leuven, EMJD by EU, FWO Research Grant, etc. She is the Executive Committee for AMSiC and Chair for AMSIC4 and an active member of EMS and WA-MS.
She uniquely combines fundamental research in membrane science with process engineering, including large-scale membrane fabrication, characterization, module preparation, process integration, and performance evaluation for broad-scope liquid and gas separation. She also worked on understanding and resolving tight emulsions resulting from petroleum recovery in collaboration with Saudi ARAMCO, one of the largest oil companies.
Outside of business, she is a proud mother and is highly involved in community outreach efforts throughout Africa, through building wet-labs and providing hands-on trainings.
Roman Madaus is a business operations manager at Osmoses. He received his B.A. from Tufts University and his M.A. from Australian National University and has a background in project management and climate innovation consulting. In his free time, Roman enjoys kiteboarding, trail running, and permaculture gardening.
Hannah Appleby is an experienced talent professional helping Osmoses build an in-house talent function fit to create memorable candidate experiences and secure top talent. Deep agency side experience across engineering has been complimented with in-house experience building systems and people processes within dentistry, software, cleantech, and blockchain. Her mantra is that “you get out what you put in” and she is a former British Champion in Cycling and represented Wales at the Commonwealth Games.
Yousif A. Hamdon is a process engineering consultant at Osmoses, with extensive industrial experience in the field of conventional natural gas facilities’ EPC. At Osmoses, he supports work on membrane units’ process design, simulation and techno-commercial analysis. Yousif earned his Ph.D. from the University of British Columbia. In his free time, Yousif enjoys beach volleyball.
Kate Lai is an independent CPA supporting Osmoses’ bookkeeping, tax, and rapidly growing budget. She earned her B.S. in Business Administration from Haas School of Business at University of California, Berkeley, and MBA from University of California, Davis. After working in various accounting and finance functions at both startups and fortune 500 companies, she founded KECL Controller, a CPA practice serving high growth startups. When Kate is not doing accounting, she enjoys cooking, traveling, and spending time with her husband and two rambunctious children.
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