Science & Technology

How Great Startup Partnerships Are Built | Best of Build Mode

This week on Build Mode, we’re diving back into the archives for a special best-of episode all about effective partnerships, from cofounder relationships and team trust to investor dynamics and leadership communication. Host Isabelle Johannesen and producer Maggie Nye revisit some of the most insightful conversations from past seasons to explore what makes startup partnerships…

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This week on Build Mode, we’re diving back into the archives for a special best-of episode all about effective partnerships, from cofounder relationships and team trust to investor dynamics and leadership communication.

Host Isabelle Johannesen and producer Maggie Nye revisit some of the most insightful conversations from past seasons to explore what makes startup partnerships actually work.

In this episode, you’ll hear from:
Jasper Carmichael-Jack, cofounder & CEO of Artisan
Ian Schmidt, partner & consultant at Trimergence
Hala Jawani and Alessio Trestani, cofounders of Rieo
Leah Solivann, founder of TaskRabbit
Ross Fubini, managing partner at XYZ Venture Capital and Leslie Feinzaig, founder & CEO of Graham & Walker
Sarah Lucena, founder & CEO of Mappa

Whether you’re searching for the right cofounder, managing conflict on your team, scaling as a solo founder, or building relationships with investors, this episode is packed with practical advice and honest founder lessons from people who’ve lived it.

Chapters:
00:00 Intro:
01:00 Jasper Carmichael-Jack (Artisan): Meeting a cofounder online and navigating a founder breakup
04:20 Ian Schmidt (Trimergence): Frameworks for conflict resolution, communication, and team trust
08:15 Hala Jawani & Alessio Cristante (Riveo): Building a startup as married cofounders
10:20 Leah Solivan (TaskRabbit): Transitioning leadership and building executive trust
12:30 Ross Fubini (XYZ Ventures) & Leslie Feinzaig (Graham & Walker): Choosing the right investors and building your cap table
16:05 Sarah Lucena (Mapa): Compatibility, investor alignment, and finding the right people

Subscribe to Build Mode on Apple Podcasts, Spotify, or wherever you like to listen. And watch the full videos on YouTube. New episodes of Build Mode drop every Thursday. Hosted by Isabelle Johannessen. Produced and edited by Maggie Nye. Audience development led by Morgan Little. Special thanks to the Foundry and Cheddar video teams.
Apply to Startup Battlefield: We are looking for early-stage companies that have an MVP. So nominate a founder (or yourself): techcrunch.com/apply. Be sure to say you heard about Startup Battlefield from the Build Mode podcast.

1 Comment

  1. @Tobias_From_MingleMinds

    May 28, 2026 at 10:08 am

    My original cofounders exited after 63 days so I get it. We weren’t a fit and they didn’t understand the user or market; did they want to.

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