Spec-Driven AI Development

about the authors

Hari Krishnan is Founder and CEO of Polarizer Technologies, where he helps teams build AI-native products and adopt AI-augmented development practices at scale. He has over two decades of experience, including roles at ThoughtWorks, Citrix, and McAfee, working across industry verticals including finance, telecom, logistics, and retail. Hari has led enterprise-wide initiatives in architecture, developer experience, test automation, and AI adoption. He is the creator of Intent-Driven Dev, where he shares Spec-Driven Development and other context-engineering techniques to enable human–agent collaboration through effective intent articulation.

Leigh Griffin holds a PhD in Computer Science and is a Lean Black Belt with over 20 years of experience in software engineering and technical leadership. He has led engineering teams from hands-on development to large scale delivery, focusing on improving flow, reducing waste, and accelerating value delivery. Leigh currently works as a Senior Manager at Red Hat, where he explores the intersection of AI, emerging technologies, and Lean thinking. He is also a qualified coach and an advocate for applying Lean principles directly to modern software practice.

Tomasz Lelek is a Senior Staff Software Engineer at Dremio and co-author of the bestselling Software Mistakes and Tradeoffs. A creator, researcher, and engineer at heart, Tomasz combines deep technical expertise with a passion for clarity and innovation. His work spans distributed systems, data engineering, and AI, with a strong foundation in databases built through extensive work on the Apache Cassandra ecosystem. Artur Skowroński is Head of Application Development at VirtusLab, a software consulting company responsible for implementing platform-level developer tooling—custom-tailored for multi-million-line codebases and complex monorepos—and the current steward of the Scala programming language. With over a decade of experience as a software engineer, tech lead, solution architect, and technical product manager, he blends hands-on depth with strong product sense and currently leads projects at the intersection of AI and modern software engineering.