We haven't done a code review in two years. The last time I read every line of code in a PR was about six months ago. And we build a programming language with a runtime meant to replace V8. This is real engineering: compiler internals, runtime behavior, type systems, codegen, concurrency semantics, and FFIs across multiple languages. The thing that makes this possible is a technique we call "fight slop with slop" - every line of code is analyzed in depth by a sprawling toolchain of custom visualizers, linters, test snapshots and a whole bunch more. While the core language VM code has super high standards, a lot of these meta-tools are mostly vibe-coded. I'll dive deep into all the tactical things we've built, and how to adopt "fight slop with slop" in your own team
Software Factories sessions at AI Engineer World's Fair 2026 in San Francisco.
Tuesday, June 30, 2026
3:20 PM - 3:40 PM·20m
Main Stage
Capacity: 4000 attendees
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Vaibhav Gupta
Founder and CEO
Boundary
@hellovai
Vaibhav Gupta (Linkedin) is the Founder and CEO of Boundary, a Y Combinator startup developing a new programming language (BAML). Across nearly a decade in software engineering, Vaibhav has built predictive pipelines at D. E. Shaw, Augmented Reality at Google, and real-time 3D reconstruction at Microsoft HoloLens. In his free time, Vaibhav dabbles in competitive table tennis and board games, and various aspects of compilers.