The Weekly Dev's Brew

Why buy a sandbox when you can just launch a container? Darren Shepherd spent years at Rancher building on Kubernetes, so sandboxes looked dumb to him. Then he built his own coding agent to run 15 things in parallel without work-tree chaos, and the most interesting part of it turned out to be a sandboxing system. He had proved himself wrong. The sharp part is where the sandbox boundary goes. The common pattern keeps the agent loop outside and sandboxes only its tool calls. Darren calls that completely flawed, because the loop itself directs code that holds secrets and talks to external systems. His answer: put the agent and its tools in one sandbox, with one policy for secrets and egress. Darren is on X and GitHub at @ibuildthecloud. https://obot.ai/ Where does your boundary sit: around the agent itself, or only around the tools it calls?

Why did AI coding make Dillon Mulroy more productive and less happy? He stopped writing most of his own code after Claude Opus 4.5. Six months later he ships more than he ever has, still reads every line, and enjoys the work less. The small implementation hits that used to create flow are gone. The day is now one hard design problem after another, and that is more exhausting. Dillon is a principal engineer at Cloudflare. This episode answers what Cloudflare's May layoff of about 1,100 people looked like from inside, why lab-style agent loops are a poor default for most teams, and how he keeps a model on a short leash with Ghostty, Herdr, Pi, and Plannotator. Specs are TypeScript types, call stacks, and tests. Pull requests stay in the 300 to 800 line range. He uses Pi's slash tree instead of sub-agents. Dillon is on X at @dillon_mulroy, GitHub at @dmmulroy, and Twitch at @dillon. https://dillonis.online

You can't get 10x with AI coding. Not today. Dex Horthy (Human Layer) makes the case for 2-3x if you refuse to ship slop, and why a perfect spec still produces garbage if you give the model permission to skip quality. That permission is how you burn a codebase into ash. We get into context engineering, where AI coding actually fails, why PR review is the bottleneck, how to use specs without worshipping them, cheap models vs Opus, compaction and sub-agents, and what to tell a 20-year engineer who is not living on Twitter. Dex is the founder of Human Layer. https://humanlayer.dev

Everyone is selling 100x developer productivity, but David Cramer runs production software at Sentry and says LLMs are not making his own work faster. We talk about what actually holds up when AI meets real codebases, security review, open source economics, and why verification beats generation.

Mario Zechner has watched people generate 500,000 lines of code in a week with a swarm of agents. He'll tell you exactly how that ends.Mario is the creator of Pi, the minimal, self-modifying coding agent that took off after Claude Code stopped fitting his workflow. He now builds it alongside Armin Ronacher at Earendil. This one is a grumpy, honest conversation about where AI coding is actually heading, and the places the hype quietly falls apart.We get into:- Why "code is never free," and how a lot of today's productivity just delays the bill- The case that spec-driven development is hyper-waterfall, repeating a mistake the industry thought it solved 30 years ago- Why an army of parallel agents wrecks his brain, and the "absolute caveman" workflow he actually uses to ship- Running AI fully local on a normal MacBook, and why that future is closer than most people think- The clanker problem- What we lose when AI strips out the friction we used to learn fromThe tension we kept circling: agents make exploring solutions faster than ever, but the thinking was always the hard part, not the typing. 0:00 Intro2:20 Why Pi Fits Workflows8:53 What Success Looks Like for Pi10:58 Building Beyond the Coding Agent13:13 Local AI Is Getting Real20:13 How Mario Actually Works26:38 Discipline, Atrophy, and Juniors29:08 Spec-Driven Dev Is Just Hyper-Waterfall35:03 Code Isn't Actually Free37:56 Async Agents and Thinking Time44:42 Learning Without the Pain49:13 AI's Sloppy Software Wave52:11 GitHub Under Clanker Load53:31 Family, Work, and Balance57:05 The Pi Team and Leadership58:52 Refactoring Pi's Core1:03:32 Security, YOLO, and Trust1:06:27 Taming the PR Flood1:12:11 Token Prices and Budgets

In this episode, I sit down with Minko Gechev — Google Engineer, former Angular team lead, and one of the most thoughtful voices on AI and developer productivity.We get into why AI won't replace engineers anytime soon (and what that actually means for your career), how Google's Angular team is affected by AI, the security risks of the current AI coding wave, and the single most valuable skill developers should be building right now.If you're a developer trying to figure out where you fit in the age of AI, I hope this one helps you.Connect with Minko:X/Twitter: https://twitter.com/mgechevGitHub: https://github.com/mgechevLinkedIn: https://linkedin.com/in/mgechevTopics covered:AI-powered developer productivity • LLM skill evaluation • Angular + AI • Software engineering career • Imposter syndrome • Open source security • Future of coding

Micro-frontends promise to help teams scale development, but AWS Principal Architect Luca Mezzalira has seen some succeed and some just fall apart. In this conversation, he shares what he's learned from years of implementation work at companies like DAZN and through consulting with Fortune 500 organizations.Luca explains why micro-frontends are fundamentally different from components—something many teams get wrong from the start. He discusses the common pitfalls he encounters: teams treating them like distributed components, sharing state across boundaries, and copying architectures from companies with completely different constraints and resources.The discussion covers practical implementation details—from communication patterns and tooling strategies to when approaches like iframes actually make sense. Luca also touches on newer developments in server-side rendering and how they're changing the micro-frontend landscape.This isn't about micro-frontends being good or bad, but about understanding when and how to use them appropriately. Luca emphasizes the importance of context and organizational design in making these architectural decisions work.Our Fantastic Guest - Luca MezzaliraI’m a software architect with over 20 years of experience helping organizations—from startups to Fortune 500s—design scalable, resilient, and modern architectures. My focus: evolving frontend systems, driving cloud-native modernizations, and enabling autonomy at scale through architectural clarity.As Principal Serverless Specialist Solutions Architect at AWS, I advise global enterprises on designing and implementing efficient, event-driven systems. I specialize in serverless, micro-frontends, and distributed architectures that align technology strategy with long-term business outcomes.LinkedIn X/TwitterLinks and ResourcesLuca's Newsletter  Single-spa  Module Federation  Native Federation  Web Fragments (Microsoft)  Astro Server Islands Thank you very much for listening! We are also pretty much on all social media platforms, so make sure to like and subscribe!Homepage - https://www.weeklybrew.dev/ BlueSky - https://bsky.app/profile/weeklybrew.devInstagram - https://www.instagram.com/weeklydevsbrew/TikTok - https://www.tiktok.com/@weeklybrew.devYouTube - https://www.youtube.com/@theweeklydevsbrewLinkedIn - https://linkedin.com/company/the-weekly-dev-s-brew

Why CSS is Now the Fastest-Moving Space in Web Development (with Una Kravets)While everyone's talking about AI disrupting development, Una Kravets from Google Chrome reveals a surprising twist: CSS has quietly become the fastest-evolving part of web development. In this conversation, Una breaks down how features that required months of JavaScript engineering are now landing as native platform capabilities. Think customizable dropdowns, anchor positioning, and scroll-driven animations. She shares insights from working directly with Chromium engineers and explains why senior developer expertise is becoming more valuable than ever, even as AI lowers the barrier to building applications.Una walks through her process for identifying platform gaps and working with standards bodies like Open UI. She also tackles the unique challenge of scaling web platform knowledge in an AI-driven development landscape, sharing her mixed feelings about AI's current applications. From her success building Chrome extensions with Gemini to her frustration with chat-based customer service, Una argues for using AI where it makes sense while maintaining the human elements that make the web engaging. Whether you're skeptical about AI's role in development or curious about the cutting-edge of CSS, this conversation offers a grounded yet forward-thinking perspective on the future of web development.Our Fantastic GuestUna KravetsUna Kravets leads the Web UI Developer Relations Team at Google Chrome with a mission to make the web platform easier to build on and more powerful. She hosts the CSS Podcast and has spoken at over 100 conferences around the world helping folks build better web interfaces. When Una isn't online, she loves to craft and recently became a mom.XBluesky WebsiteLinks and ResourcesEmil Kowalski's React motion course animations.dev Google's web development guidance and feature announcementsOpen UI Community GroupCSS Working Group GitHub Web Platform TestsThank you very much for listening! We are also pretty much on all social media platforms, so make sure to like and subscribe!Homepage - https://www.weeklybrew.dev/ BlueSky - https://bsky.app/profile/weeklybrew.devInstagram - https://www.instagram.com/weeklydevsbrew/TikTok - https://www.tiktok.com/@weeklybrew.devYouTube - https://www.youtube.com/@theweeklydevsbrewLinkedIn - https://linkedin.com/company/the-weekly-dev-s-brew

What does it take to build a web browser when everyone says it's impossible? In this episode, we sit down with Andreas Kling, the engineer behind Ladybird—the only major browser project that doesn't take money from Google.Andreas breaks down a uncomfortable truth: Google funds every major browser through search deals. Chrome, Firefox, Safari—they're all dependent on Google's advertising revenue. Ladybird is building the first truly independent alternative since the early Firefox days.We dive deep into the technical challenges of implementing web standards from scratch, why their 700,000 lines of code can compete with Chrome's 100+ million, and how they're making browser code that actually mirrors the specifications. Andreas reveals why they switched from UTF-8 to UTF-16, why they didn't choose Rust, and how they handle the constant evolution of living web standards.From the "draw the owl" problem of CSS specifications to building a sustainable nonprofit model with sponsors like Shopify, Andreas shares the engineering and business decisions behind their ambitious timeline: alpha in 2026, beta in 2027, and v1.0 by 2028.Our Fantastic GuestAndreas KlingPresident of the Ladybird Browser Initiative.XLinks and ResourcesLadybird Browser WebsiteWeb Platform TestsFil-C (memory-safe C++ compiler)Thank you very much for listening! We are also pretty much on all social media platforms, so make sure to like and subscribe!Homepage - https://www.weeklybrew.dev/ BlueSky - https://bsky.app/profile/weeklybrew.devInstagram - https://www.instagram.com/weeklydevsbrew/TikTok - https://www.tiktok.com/@weeklybrew.devYouTube - https://www.youtube.com/@theweeklydevsbrewLinkedIn - https://linkedin.com/company/the-weekly-dev-s-brew

What does it take to accidentally become the maintainer of one of React's most popular libraries? In this episode, we sit down with Dominik Dorfmeister (aka. TkDodo), maintainer of React Query (now TanStack Query), to unpack his unexpected journey from answering Discord questions during COVID to maintaining a library with 10 million weekly downloads.Dominik reveals how spending months just helping people on Discord led to becoming a core maintainer of the TanStack ecosystem. We dive deep into React Query's stability-first approach, the challenges of managing breaking changes across multiple frameworks, and why the React adapter is surprisingly the most complex to maintain.From deleting 20,000 lines of dead code at Sentry to building platform teams that enable developer productivity, Dominik shares insights into maintaining software at scale. Our Fantastic GuestDominik Dorfmeister Software Engineer from 🇦🇹, working at Sentry, maintaining TanStack QueryBlueSkyLinks and ResourcesDominik's Blog Query.gg Knip Docs Thank you very much for listening! We are also pretty much on all social media platforms, so make sure to like and subscribe!Homepage - https://www.weeklybrew.dev/ BlueSky - https://bsky.app/profile/weeklybrew.devInstagram - https://www.instagram.com/weeklydevsbrew/TikTok - https://www.tiktok.com/@weeklybrew.devYouTube - https://www.youtube.com/@theweeklydevsbrewLinkedIn - https://linkedin.com/company/the-weekly-dev-s-brew