Monorepos at Scale with Santosh Yadav (Principal DevRel, CodeRabbit) | Nx, Module Federation, AI Code Review

Poly repos were good when we needed separation. But in the age of AI, do we still need it? Santosh Yadav doesn't think so.

In this episode of Señors at Scale, I sit down with Santosh Yadav, Principal Developer Advocate at CodeRabbit, Google Developer Expert for Angular, GitHub Star, Nx Champion, and Microsoft MVP. Santosh has spent years deep in the monorepo world, including leading the move to Module Federation and driving Nx adoption across 30+ teams during his time as a staff engineer at Celonis.

We get into why monorepos are quietly becoming an AI superpower, how context changes everything when AI tools can read your dependency graph, and what it actually takes to migrate 20+ apps off polyrepos. Santosh also pulls back the curtain on CodeRabbit: how they handle context engineering for code review, why they run evals against 40+ models, their AI slop detector for open source, and how the team reacted when the big labs shipped their own code reviewers.

Key Topics:

- Becoming a GDE, GitHub Star, and Nx Champion (and what each actually gives you)

- Migrating 20+ apps to Module Federation at Celonis

- Monorepo vs Polyrepo in the age of AI

- Why AI tools thrive on monorepo context

- What Nx really is and when you need it

- Inside CodeRabbit: context engineering, model evals, and the AI slop detector

- Sponsoring open source with $1M+ in commitments

- How startups survive when the big labs ship competing features

GUEST LINKS

💼 LinkedIn: https://www.linkedin.com/in/santoshyadavdev/

🐦 X: https://x.com/SantoshYadavDev

🐙 GitHub: https://github.com/santoshyadavdev

🌐 Website: https://www.santoshyadav.dev/

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ADDITIONAL RESOURCES

CodeRabbit: https://www.coderabbit.ai/

Nx: https://nx.dev/

#Monorepo #Nx #ModuleFederation #AICodeReview #CodeRabbit #Angular #DeveloperExperience #OpenSource #SoftwareEngineering #StaffEngineer

What's your take, are monorepos the right move in the age of AI, or is polyrepo still worth defending? 💬