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

> Source: <https://www.lennysnewsletter.com/p/building-the-most-ai-pilled-engineering>
> Published: 2026-06-21 12:31:43+00:00

**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:

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### 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)

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*Lenny may be an investor in the companies discussed.*