Illustration of people talking, sharing ideas, asking questions, learning & collaborating.
Illustration by Sandra Pallier

Our members include tech workers, independent consultants, data scientists, designers, students, and more. Membership is open to anyone who identifies as a tech worker, is in the tech industry, or is interested in working with tech folks. The only requirement is that you are interested in tackling climate issues in the workplace. People of any geographic region, sector, skill-set, day job, seniority, knowledge or experience level are welcome. 

If this sounds like you, please join us!

We operate an intentionally safe and inclusive environment at all times, for people of any gender, identity, ethnicity, religion, socioeconomic status and/or other possible historically exploited differentiators. Protecting this is, and will always be, core to our community value system.

We follow the Chatham House rule: CATs are free to use information received, but neither identity nor affiliations of the speakers/participants may be revealed (unless the speakers/participants give their consent)

If something inappropriate happens, reach out to us at hello[at]

Always inclusive, welcoming & safe

Equal respect for all membership styles

Privacy enables participation

Our People


Chris Adams

Heather Baden

Portrait of Melissa Hsiung

Melissa Hsiung

Portrait of Sandra Pallier

Sandra Pallier


Portrait of Andy McWilliams

Andy McWilliams

Portrait of Asim Hussain

Asim Hussain

Portrait of Sam Phillips

Sam Phillips


  • Alicia Wong
  • Alja Isaković • Product Manager •
  • Andrea • Twitter
  • Andrew O’Regan (he/him) • UX/Service Designer • • LinkedIn
  • Antonio Roque • CS student and Junior Digital Project Manager
  • Brittany Fischer • UI/UX Developer
  • Deena Rosen (she/her) • Design Advisor • • LinkedIn
  • Evan Hahn (he/him) • Programmer • • Twitter
  • Hannah Smith (she/her) • Freelance WordPress developer and speaker • Twitter • LinkedIn
  • Jemma Harwood • Digital design + video
  • Joshua Cortez • Data scientist
  • Katrin Apel • Freelance Product Manager, Developer
  • Kaushal Bhavsar (he/him) • Computer Vision Engineer • LinkedIn
  • Luís Cruz • Assistant Prof. at TU Delft • Twitter
  • Luke Watts (he/him) • Software Engineer •
  • Marketa Benisek • Climate Reality Leader
  • Marwa Eltaib
  • Matthew Ferry (he/him) • Data Wizard & Software Engineer
  • Nadia Zunarelli (she/her) • UX Designer • LinkedIn
  • Natalia Waniczek (she/her)
  • Noel Anthony • Copywriter and Content Marketer
  • Pia Faustino • Head of Social Impact
  • Piyush Mishra • Engineer
  • Rebecca Stevenson
  • Sarah Hsu • Cloud Platform Engineer
  • Sofia Rufino • Energy and Environmental Engineering
  • Stefanie Mühlbacher • UX Designer
  • Su Hang • Data Scientist


  • David Cairns
  • Chelsea Mozen
  • Sara Diaz
  • Peter W
  • Tom Jowett
  • Sean O’Connor
  • Steven Lemeshow
  • Bryce Walsh
  • Yarin Snapir
  • Khaled Arnaout
  • Sarah Hoessler
  • Laurence
  • Erin Duddy