I’m Joshua (he/him) – a technologist and an artist. I believe that another world is possible. I frequently ask the question “How can I be a good ancestor?” Sometimes I write.

Current Work

Streamlit @ Snowflake I’m currently working on Streamlit, the fastest way to build and share data applications. I’m focused on developer experience and quality for the Streamlit open source library, and related hosting platforms. Streamlit is part of Snowflake.

Past Projects, Work and Education

SonderMind SonderMind provides access to affordable and effective mental health care, in person and online. As the PM for Platform and Architecture at SonderMind, I drove core platform, DevOps and data / experimentation initiatives. I also worked extensively on building out and integrating our natural language processing and machine learning capabilities following SonderMind’s acquisition of Qntfy in the fall of 2021.

Qntfy As Product Lead and later Director of Product at Qntfy, I led our engineering team in evolving our core data platform to a scalable, flexible distributed system, shortening our population insight generation process from months to days. I took our consumer data product offering, Quinn, from a prototype to a composable, API-driven service that supported several pilots. I also drove our transition to a modern architecture using IaC, CI/CD, Kubernetes, SRE best practices and MLOps.

I’m proud of our track record in providing key insights to decision makers and researchers working to improve mental health for impacted populations and individuals. Qntfy was acquired by SonderMind in the fall of 2021.

Catharsis on the Mall: A Vigil for Healing – As a curator, core organizer, permit lead and board member, I helped bring this 48 hour vigil to the National Mall annually from 2015 – 2019. Featuring art, music, workshops, speakers, a temple burn and thousands of participants, Catharsis heals and transforms ourselves, our culture and our communities through radical direct experience. In 2019, Catharsis had 15 theme areas, 30+ placed art projects, hundreds of volunteers and performers, and thousands of attendees.

SunCatcher Greenhouses – I managed the strategy, sales and digital for SunCatcher Greenhouses, my family’s passive solar design and consulting business, from 2014 – 2020. My family has been involved in energy efficient building design, particularly in the agricultural space, since the late 1970’s. I’ve been involved on and off in passive solar projects and the business since 2001.

The Data Guild – I did freelance projects with the Data Guild from 2014-2016. We worked with clients including Fortune 500 companies, startups and non-profits across healthcare, energy efficiency, marketing, fraud detection, and other spaces. I specialized in getting the data products we built into the hands of users – from the user interaction flow to the actual engineering of integrating with client systems.

I worked at Microsoft for 5 years as a program manager in Windows Telemetry. I owned and managed processing pipelines and analytics that helped developers fix bugs and make better decisions throughout Microsoft and wider the Windows ecosystem, impacting the user experience of more than a billion people. We collected and analyzed a variety of data on software usage and reliability.

I did my undergrad at the University of Pennsylvania, where I graduated in 2009 with a degree in Computer Science Engineering, with a healthy dose of business, economics, political science and writing thrown in as well.

Other Fun Things

DJ under the alias e.yore

Fire performance and contact staff with DC fire conclave Revolutionary Motion

Former organizer and board member with
WERK for Peace

Part of on-site build and operation team for the Icarus art car at Burning Man (’14 and ’16)
Publications and Patents
Coppersmith, Fine, Crutchley, Carroll: “Individual differences in the Movement-Mood Relationship in Digital Life Data” [CLPsych 2021]
Fine, Crutchley, Blase, Carroll, Coppersmith: “Assessing population-level symptoms of anxiety, depression, and suicide risk in real time using NLP applied to social media data” [EMNLP 2020]
Knowles, Carroll, Dredze: “Demographer: Extremely Simple Demographics” [EMNLP 2016]
Carroll, Lee: “A Genetic Algorithm for Segmentation and Information Retrieval of SEC Regulatory Filings” [dg.o 2008]
Dredze, Brooks, Carroll et al: “Intelligent Email: Reply and Attachment Prediction” [IUI2008]
United States MS# 334063.01 – “Telemetry File Hash and Conflict Detection”
Get in touch

Email: carroll dot joshk at gmail dot com

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