Lenny's Podcast: Product | Career | Growth

What happens after coding is solved? | Fiona Fung (Manager of the Claude Code and Cowork Teams)

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Key takeaways

  • AI has transformed the role of software engineers, enabling teams to ship significantly more code and think ambitiously.
  • High agency combined with high accountability is crucial for teams to thrive in an AI-enabled environment.
  • Automating verification and proactive quality checks are key strategies to handle increased velocity and maintain high standards.
  • The role of managers can evolve to include hands-on coding and using the product daily to stay close to the work.
  • Continuous learning, growth mindset, and openness to re-evaluate metrics are essential to adapt in a rapidly changing landscape.
  • Building a strong culture, fostering diversity, and maintaining transparency are vital for organizational health at scale.
  • Future success depends on rethinking planning processes, leveraging AI routines, and automating routine workflows to reduce context switching.
  • Training and developing the next generation of engineers may require new models beyond traditional education, such as apprenticeships or fellowships.

Summary

Transformations in Software Engineering and AI's Impact

This section explores how the role of software engineers has dramatically changed over the past 25 years, driven significantly by advancements in AI. Fiona Fung discusses the evolution from manual coding to AI-assisted development, emphasizing how AI tools like Claude have increased team productivity and shifted roles across organizations. The conversation highlights the unprecedented scale of code shipped (8x more on average at Anthropic) and how such shifts are reshaping team dynamics, verification processes, and quality control. Fiona reflects on the history of software development—from early days at IBM and Microsoft to modern AI-infused workflows—underscoring that coding is no longer the bottleneck, enabling engineers and teams to think bigger and more ambitiously.

The Future of AI-Integrated Teams and Roles in 2026

This section looks into what a software team deeply integrated with AI by 2026 might look like. Fiona describes a shift towards asynchronous work facilitated by AI routines, allowing for higher efficiency and autonomy. She emphasizes the importance of high agency and accountability within teams, where AI assists in monitoring, managing, and verifying work, thus allowing engineers to focus on high-impact, creative tasks. The discussion emphasizes the blurring of traditional roles, with even managers and PMs becoming more involved in coding and product responsibilities, driven by the capabilities of AI and automation. The conversation also touches on hiring strategies, favoring creative builders with product sense and system expertise and the continuing need for deep domain knowledge and verification of AI-generated outputs.

Team Management and Cultivating a High-Performance Culture in an AI-Driven Environment

Fiona shares insights on how she manages rapid growth and organizational culture amid the AI revolution. She stresses the importance of managers remaining as individual contributors (ICs) to stay close to the product and maintain a high level of empathy and understanding. She discusses practices like regular dogfooding, using the product in daily operations, and transparent communication about challenges and failures to foster psychological safety. Fiona emphasizes the significance of high agency balanced with accountability, cultivating diverse perspectives, and nurturing a one-team mentality. She also discusses how her team implements proactive quality monitoring with frameworks like 'bad vs. sad,' automated checks, and dashboards to ensure high-quality outputs while avoiding burnout from constant context switching.

Challenges and Opportunities in a Rapidly Evolving Engineering Landscape

This section delves into key unresolved issues faced by engineering teams in an AI-augmented world. Fiona talks about the ongoing challenge of managing context switching with multiple AI agents and how to maintain skills and craftsmanship as automation increases. She advocates for constant iteration, learning from emerging use cases, and re-evaluating what metrics truly measure progress and impact. The conversation explores how to think about long-term planning with a flexible, just-in-time (JIT) approach to adapt rapidly to changing landscapes. Fiona also discusses the future of engineering roles, the importance of foundational skills, and the potential for new models of training and apprenticeship to develop the next generation of AI-native engineers.

Unanswered Questions and Emerging Frontiers in AI and Software Development

The final themes cover ongoing open questions that Fiona and her team are exploring. These include how far to push automation, how to verify AI-generated experiences, and how to balance speed with quality and impact. She highlights the importance of continuous learning, keeping a growth mindset, and revisiting outdated metrics as the landscape shifts. The discussion ends with reflections on the future of AI-driven roles, the need for scalable talent development, and how to foster a healthy, innovative, and resilient team culture in the face of relentless change.

Sponsors

  • WorkOS · Make your app enterprise-ready, with SSO, SCIM, RBAC, and more.
  • Mercury · Radically different banking, now with Command.

Show notes

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.

In our in-depth conversation, we discuss:

1. What she’s learned about running a team that’s shipping 8x more code than before

2. Which roles AI will transform next

3. Specific ways her team uses AI

4. How Claude “routines” have changed how she operates as a manager

5. The context-switching problem no one has solved yet

6. The biggest unsolved problem in AI

7. What keeps her up at night

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Brought to you by:

WorkOS—Make your app enterprise-ready, with SSO, SCIM, RBAC, and more: https://workos.com/lenny

Mercury—Radically different banking, now with Command: https://mercury.com/

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Where to find Fiona Fung:

• LinkedIn: linkedin.com/in/fionafung

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Where to find Lenny:

• Newsletter: https://www.lennysnewsletter.com

• X: https://twitter.com/lennysan

• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/

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In this episode, we cover:

(00:00) Introduction to Fiona Fung

(02:31) How the engineering role has transformed over 25 years

(09:28) What an AI-pilled software team looks like in 2026

(12:26) Using Claude to manage and review team output

(14:40) The evolution of code review and verification

(16:55) Who to hire: creative builders and deep systems experts

(18:18) The shift to ambitious thinking

(19:40) The growth mindset required to thrive in AI-native teams

(25:52) Helping small businesses adopt AI tools

(31:46) How Anthropic spots latent demand and builds for it

(35:08) The next frontier: asynchronous work with AI routines

(38:06) Agency and accountability in AI-native teams

(39:40) The vibe shift from token-maxing to ROI measurement

(44:24) The “bad vs. sad” quality framework

(49:34) Why all managers start as ICs at Anthropic

(55:24) Preventing skill atrophy

(58:43) Managing context switching with 20 AI agents running

(1:00:08) How PM and data science roles are transforming

(1:03:40) The importance of dogfooding and using your own product

(1:08:36) Outstanding questions

(1:12:48) The future of engineering jobs and education

(1:17:59) What keeps Fiona up at night: team culture at scale

(1:22:53) From six-month roadmaps to JIT (just-in-time) monthly planning

(1:27:03) Lightning round

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References: https://www.lennysnewsletter.com/p/building-the-most-ai-pilled-engineering

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Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com.

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Lenny may be an investor in the companies discussed.



To hear more, visit www.lennysnewsletter.com

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