
Andy Downard
Product Leader & Co-Founder focused on AI for reverse logistics and sustainability
Denver, Colorado, United States
Joined February 2026
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Summary
Andy Downard is a serial entrepreneur and product leader with a strong background in reverse logistics and operations. He has co-founded multiple companies, including Thriftly, ButterFLi, StyleWhere, and Microfluidic Applications, often leading them through significant growth or acquisition. His experience spans a wide range of industries from on-demand transportation and retail analytics to environmental sensors and sustainable commerce. wellfound+4
Andy leverages cutting-edge technology, particularly AI, to optimize operations and create efficiencies. At Thriftly, he developed an AI-powered app that uses Google Lens and Gemini to streamline pricing, tagging, and online listing for thrift stores. Earlier, at Happy Returns, he built software that scaled reverse logistics 200-fold and significantly reduced shipping and labor costs through advanced warehouse app capabilities and enterprise integrations. His work at StyleWhere also involved large-scale data analysis for retail insights. publicpolicy+2
He possesses a unique blend of scientific and business acumen, holding a Ph.D. in Chemical Engineering from Caltech and an MBA from Notre Dame. His academic research at Caltech focused on atmospheric aerosol science, contributing to multiple publications and patents in the field of chemical and aerosol technology. This technical depth underpins his ability to develop innovative product solutions. wellfound+3
Andy is committed to mission-driven ventures that address societal and environmental needs. Thriftly, for example, not only aims to make thrift stores more profitable but also supports job creation and promotes sustainability by reducing waste. His co-founding of ButterFLi Technologies also addressed a social need by providing on-demand accessible transportation for the elderly and people with disabilities. publicpolicy+1
Work
Education
Writing
The effect of acid–base clustering and ions on the growth of atmospheric nano-particles
January 1, 2016A new high-transmission inlet for the Caltech nano-RDMA for size distribution measurements of sub-3 nm ions at ambient concentrations
January 1, 2016Radial opposed migration aerosol classifier with grounded aerosol entrance and exit
January 1, 2015US Patent 9,095,793
Opposed migration aerosol classifier gas and heat exchanger
January 1, 2015US Patent 9,138,663
Oxidation products of biogenic emissions contribute to nucleation of atmospheric particles
January 1, 2014Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere
January 1, 2013Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules
January 1, 2013Ion mobility-mass spectrometry with a radial opposed migration ion and aerosol classifier (ROMIAC)
January 1, 2013Classification of Sub-10 nm Aerosol: Theory, Instrument Development, and Experiment
January 1, 2012Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation
January 1, 2011Similar profiles
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