water-tech
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Joachim Katchinoff
Joachim Katchinoff is a Yale-trained biogeochemist who co-founded CREW Carbon to turn ordinary wastewater treatment plants into permanent carbon-removal machines. By dosing treatment tanks with crushed alkaline minerals, CREW converts the CO2 that microbes naturally belch into stable bicarbonate, while cutting chemical costs for utilities. The company became the first in the world to issue certified Wastewater Alkalinity Enhancement carbon credits and raised a $25M Series A in 2026 to scale across the US and Europe.
Matthew Rosenthal
Matthew Rosenthal is CEO and Co-Founder of SewerAI, the AI-powered platform transforming how cities inspect and manage underground sewer infrastructure. A Carnegie Mellon-trained engineer who worked at Fitbit and founded Centosette (acquired 2010), Rosenthal pivoted into sewer tech after recognizing that one million miles of U.S. pipes were being assessed with 20-year-old software. SewerAI's Pioneer platform and AutoCode AI have now processed over 135 million feet of sewer inspection footage, slashing inspection costs by 40-70% and saving municipalities tens of millions of dollars. In June 2024, Rosenthal closed a $15M Series B led by Innovius Capital, bringing total funding to $18.5M.
Olgica Bakajin
Olgica Bakajin is the CEO and Founder of Porifera Inc., a San Leandro, California-based company pioneering forward osmosis membrane technology for the food, beverage, and industrial water sectors. A physicist by training - B.A. from the University of Chicago and Ph.D. from Princeton - she spent nearly a decade at Lawrence Livermore National Laboratory developing carbon nanotube membranes that move water 1,000x faster than conventional materials. Her 2006 Science paper on carbon nanotube desalination became the most-cited chemistry article in the journal. In 2009 she spun Porifera out of LLNL, and the company now serves 100+ customers across 20+ countries, helping breweries, coffee roasters, and winemakers concentrate their products without heat, preserving flavor, aroma, and nutrients while slashing energy use by up to 80%.
Shane Dyer
Shane Dyer is the CEO and co-founder of Irrigreen, an Edina, Minnesota-based company reinventing residential lawn irrigation with AI-powered digital sprinkler systems that use up to 50% less water than conventional setups. A Stanford-trained computer systems engineer and serial entrepreneur with three company foundings under his belt - including Arrayent, an IoT platform acquired for $37M - Dyer applied inkjet printing precision to lawn sprinklers, creating a 'water printing' system now deployed across 300+ installation partners in nearly every U.S. state. Irrigreen raised a $19M Series A in April 2025, bringing total funding to $35.89M, and has saved 400 million gallons of water for customers to date.
Ali Mannan Tirmizi
Ali Mannan Tirmizi is a Pakistani IT leader and engineer who went from co-founding a Harvard-backed water filtration startup at 23 to becoming a Senior IT Manager at Procter & Gamble, where he leads supply chain cloud platforms across Asia, Middle East and Africa. With a background in Electrical Engineering from LUMS and comparative public policy from UMass Amherst (US State Department SUSI program), he bridges technical depth with social purpose - slashing $220K in cloud costs at P&G while previously building a $2 water filter that removes 99.99% of bacteria for Pakistan's underserved communities. He also writes on data management for DATAVERSITY and holds a YouTube channel where he shares insights from his journey.