Building the most AI-pilled engineering team in the world | Fiona Fung (Manager of the Claude Code and Cowork Teams)

Fiona Fung, manager of the Claude Code and Cowork teams at Anthropic, revealed that Anthropic engineers now ship 8x more code per quarter than in 2021-2025, attributing the productivity surge to AI tools. Fung, a 25-year engineering veteran who previously built Visual Studio at Microsoft and launched Facebook Marketplace at Meta, discussed how AI is transforming engineering roles and management practices.

Fiona Fung leads the teams behind Claude Code and Cowork at Anthropic overseeing Boris Cherny and the entire engineering and PM team . Before Anthropic, she spent 11 years at Microsoft building Visual Studio and TypeScript and then moved to Meta, where she started Facebook Marketplace now generating over $100 billion in GMV annually , worked on Meta’s first smart glasses and AR glasses, and led infrastructure, growth, integrity, and safety teams at Instagram. She’s been an engineer for over 25 years and has a unique perspective on how the role of building software is changing. Listen on YouTube, Spotify, and Apple Podcasts In our in-depth conversation, we discuss: What she’s learned about running a team that’s shipping 8x more code than before Which roles AI will transform next Specific ways her team uses AI How Claude “routines” have changed how she operates as a manager The context-switching problem no one has solved yet The biggest unsolved problem in AI What keeps her up at night Brought to you by: WorkOS —Make your app enterprise-ready, with SSO, SCIM, RBAC, and more Mercury —Radically different banking, now with Command Where to find Fiona Fung: • LinkedIn: linkedin.com/in/fionafung http://linkedin.com/in/fionafung Referenced: • Running an AI-native engineering org: https://www.youtube.com/watch?v=igO8iyca2 g https://www.youtube.com/watch?v=igO8iyca2 g • Head of Claude Code: What happens after coding is solved | Boris Cherny: https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens https://www.lennysnewsletter.com/p/head-of-claude-code-what-happens • Today, Anthropic engineers on average ship 8x as much code per quarter as they did compared to 2021-2025: https://x.com/AnthropicAI/status/2062568864240836995 https://x.com/AnthropicAI/status/2062568864240836995 • Visual Studio: https://visualstudio.microsoft.com https://visualstudio.microsoft.com • Joseph Campbell’s quote: https://www.goodreads.com/quotes/192665-the-cave-you-fear-to-enter-holds-the-treasure-you https://www.goodreads.com/quotes/192665-the-cave-you-fear-to-enter-holds-the-treasure-you • Life-changing Cowork use case: https://x.com/lennysan/status/2059664455001334124 https://x.com/lennysan/status/2059664455001334124 • Introducing Claude for Small Business: https://www.anthropic.com/news/claude-for-small-business https://www.anthropic.com/news/claude-for-small-business • Conversations with Tyler podcast: https://conversationswithtyler.com https://conversationswithtyler.com • Sheryl Sandberg on Facebook: https://www.facebook.com/sheryl https://www.facebook.com/sheryl • Amélie on Prime Video: https://www.amazon.com/Amelie-Jean-Pierre-Jeunet/dp/B0DQ4S3N45 https://www.amazon.com/Amelie-Jean-Pierre-Jeunet/dp/B0DQ4S3N45 • Spirited Away on HBO Max: https://www.hbomax.com/movies/spirited-away/3deab668-d0a4-4a8d-9bc8-0952a0ad836e https://www.hbomax.com/movies/spirited-away/3deab668-d0a4-4a8d-9bc8-0952a0ad836e • Nausicaä of the Valley of the Wind on HBO Max: https://www.hbomax.com/movies/nausicaa-of-the-valley-of-the-wind/ed66031b-6353-4019-ba54-35488468a4db https://www.hbomax.com/movies/nausicaa-of-the-valley-of-the-wind/ed66031b-6353-4019-ba54-35488468a4db • Sweet Sisters Bodycare: https://sweetsistersbodycare.com https://sweetsistersbodycare.com • Anthropic events: https://www.anthropic.com/events https://www.anthropic.com/events • Clare Pooley’s quote: https://www.goodreads.com/quotes/11305360-in-a-world-where-you-can-be-anything-be-kind https://www.goodreads.com/quotes/11305360-in-a-world-where-you-can-be-anything-be-kind Recommended books: • Margaret Atwood’s books: https://www.amazon.com/stores/author/B000AQTHI0?ccs id=0027a474-cd59-4a3a-bcd7-9b173c27d530 https://www.amazon.com/stores/author/B000AQTHI0?ccs id=0027a474-cd59-4a3a-bcd7-9b173c27d530 • Haruki Murakami’s books: https://www.amazon.com/stores/Haruki-Murakami/author/B000AP7AFI https://www.amazon.com/stores/Haruki-Murakami/author/B000AP7AFI • The Little Prince : https://www.amazon.com/Little-Prince-Antoine-Saint-Exup%C3%A9ry/dp/0156012197 https://www.amazon.com/Little-Prince-Antoine-Saint-Exup%C3%A9ry/dp/0156012197 • Nausicaä of the Valley of the Wind : https://www.amazon.com/Nausica%C3%A4-Valley-Wind-Box-Set/dp/1421550644 https://www.amazon.com/Nausica%C3%A4-Valley-Wind-Box-Set/dp/1421550644 • High Output Management : https://www.amazon.com/High-Output-Management-Andrew-Grove/dp/0679762884 https://www.amazon.com/High-Output-Management-Andrew-Grove/dp/0679762884 Production and marketing by https://penname.co/ https://penname.co/ . For inquiries about sponsoring the podcast, email email protected /cdn-cgi/l/email-protection f787989394968483b79b9299998e8596949f9e83849c8ed994989a . Lenny may be an investor in the companies discussed.