Our Team

    David Jaber – Principal and Founder

David is a business consultant and advisor of 20 years, a Project Drawdown Fellow, and the author of Climate Positive Business: How You and Your Company Hit Bold Climate Goals and Go Net Zero. He has worked with over 150 companies on environmental excellence.

Typical projects involve:
> climate strategy, carbon footprint analytics and GHG reduction for forward-thinking food processing, manufacturing, and tech companies;
> site audits to identify major impacts, quantify the benefits of action, and detail your key improvement opportunities;
> life-cycle analysis (LCA) oriented investigations of business supply-chains.

Clients have included Clif Bar, PG&E, Sustainable Restaurant Group, Delta Dental, Steelcase, Danone, HP, BASF, Bon Appetit Management Company, Equal Exchange, Filson, Ortega Parks, Nutiva, Bare Snacks, Auberge Resorts, Ecocity Builders, Natural Capitalism Solutions and Thunder Valley Community Development Corporation. David’s progress metrics to date include 14,000 tons material diverted from landfill; 28,000+ MTCO2E sequestered, eliminated or avoided; and $31.5M raised for community resilience projects.

David holds an M.S. in Environmental Engineering from University of California at Berkeley and a B.S. in Chemical Engineering from Rice University.

  Bridget Keeler – Climate Consultant

Bridget is an energy industry professional and is passionate about the intersection of sustainability and business. She recently left the clean tech startup Redaptive where she worked in various roles, overseeing the utility incentive program, advancing customer adoption of Commercial Property Assessed Clean Energy, and designing decarbonization products for Redaptive’s customers. Prior to Redaptive, Bridget worked at the Presidio Trust, overseeing the governmental agency’s internal sustainability initiatives.

Bridget holds a B.A. in Economics from Wake Forest University, and will be attending graduate school starting in August to advance her education in sustainability.

   Tiersha Lin – Marketing Specialist

Tiersha serves as Climate Positive’s lead on digital marketing. In her marketing work, she has participated in collegiate case competitions and the Google Ads Online Marketing Challenge, and she is expanding her breadth of marketing knowledge and experiences with other projects, internships, and freelance work. Tiersha is also passionate about social justice, sustainability and cultural activism, holding leadership positions in cultural organizations and non-profits dedicated to these causes.

Tiersha is a student at the University of California, Santa Barbara pursuing a double major in Economics and Accounting (B.A.) and Dance (B.F.A.), while exploring career paths in marketing and consulting.