Writing tests with AI, but not LLMs
How Diffblue leverages machine learning techniques to write effective unit tests.

How Diffblue leverages machine learning techniques to write effective unit tests.
Sagar Batchu, CEO and cofounder of API tooling company Speakeasy, talks with Ryan about the evolving API landscape, AI integration, the role of human technologists in an increasingly automated environment, and what people building APIs right now should keep in mind.
Ben and Ryan talk with Geoffrey (Jef) Huck, a software developer turned public speaking coach, about the importance of soft skills in the tech industry—in particular, speaking and communication skills. Their conversation touches on how Huck’s experiences with anxiety shaped his efforts to become a better communicator, practical techniques for dispelling anxiety and connecting with the audience, and the MVP approach to public speaking.
Ryan talks with Sterling Chin, a senior developer advocate at Postman, about the intersection of APIs and AI. They cover the emergence of AI APIs, the importance of quality APIs for AI integrations, and the evolving role of GraphQL in this new landscape. Sterling explains how some organizations are shifting toward an API-first development approach and talks about the future of data access in the agentic era, where APIs will play a crucial role in AI interactions.
In this episode, Ben and Ryan sit down with Inbal Shani, Chief Product Officer and Head of R&D at Twilio. They talk about how Twilio is incorporating AI into its offerings, the enormous importance of data quality in achieving high-quality responses from AI, the challenges of integrating cutting-edge AI technology into legacy systems, and how companies are turning to AI to improve developer productivity and customer engagement.
Happy New Year! In this episode, Ryan talks with Jetify founder and CEO Daniel Loreto, a former engineering lead at Google and Twitter, about what AI applications have in common with Google Search. They also discuss the challenges inherent in developing AI systems, why a data-driven approach to AI development is important, the implications of non-determinism, and the future of test automation.
During the holidays, we’re releasing some highlights from a year full of conversations with developers and technologists. Enjoy! We’ll see you in 2025.
The home team is joined by Kinnaird McQuaid, founder and CTO of NightVision, which offers developer-friendly API and web app security testing. Kinnaird talks about his path from school-age hacker to white-hat security expert, why it’s important to build security practices into the software development lifecycle, how GenAI is changing security testing, and what security teams need to understand about developers’ working lives.
Ben and Ryan talk all things mobile app development with Kenny Johnston, Chief Product Officer at Instabug. They explore what’s unique about mobile observability, how AI tools can reduce developer toil, and why user experience matters so much for app quality.
Anand Das, cofounder and CTO of Bito AI, joins Ben and Ryan for a conversation about the intersection of developer productivity and GenAI.
Ben and Ryan talk to Rob Skillington, CTO and co-founder of Chronosphere. They talk about how build vs. buy is a false choice, lessons learned from building developer tooling at Uber, and why building developer tools needs more than technical skills.
On today’s sponsored episode, Ben and Ryan talk with James Simmonds and Tristan Sheppard, both principal software engineers and engineering leads in the power trading department at Shell, about how a century-old company is working to evolve into a place where developers and engineers love to work.
For AI tools to be useful to your team, they have to fit into your existing workflows.
Computer scientist Jean Yang, founder and CEO of monitoring and observability platform Akita, tells the home team how her drive to improve developer tooling led her from academia to Silicon Valley.