Martin Costello is a software developer and tester near London with 19+ years of experience, specializing in C# .NET, ASP.NET Core, AWS, and Azure.
Rachel Andrew is a senior web developer, technical writer, and editor at Google, CSS Working Group member, author, and speaker, sharing expertise in web development, CSS, and front/back-end technologies.
Nicolai Parlog (nipafx) is a Java Developer Advocate at Oracle who shares deep insights on Java through blogs, talks, books, videos, and open-source projects, helping developers learn and grow.
Rachel Andrew, web expert and CSS specialist, shares insights on modern web development, technical writing, and CSS specifications. Google content lead and conference speaker.
Alex Merced — Developer and technical writer sharing in-depth insights on data engineering, Apache Iceberg, data lakehouse architectures, Python tooling, and modern analytics platforms, with a strong focus on practical, hands-on learning.
Melroy van den Berg writes hands-on articles about GNU/Linux, networking, security, DevOps, software engineering and embedded hardware. The blog mixes step-by-step guides and deep dives, from DNS fundamentals with command-line experiments to self-hosting, servers, tooling and practical troubleshooting. Clear categories cover levels from beginner to advanced, making it useful both for learning core concepts and refining day-to-day workflows.
Lea Verou is a web standards expert, developer, and designer with a PhD from MIT in Human-Computer Interaction. She has worked as Product Lead at Font Awesome, helped shape the web as a member of the W3C Technical Architecture Group, and has been part of the CSS Working Group since 2012. Her open-source tools like PrismJS and Color.js are used by millions of developers worldwide. Lea is also the author of a bestselling CSS book, a frequent conference speaker, and an advocate for making technology simpler, more usable, and open for everyone.
Thomas Uhrig is a software developer based near Karlsruhe, Germany, who writes about building microservices, Java and Kotlin ecosystems, Spring Boot, GraphQL, and modern cloud infrastructures. On his blog you’ll find deep dives into topics such as micro-frontend architectures, database latency monitoring, event-driven design, and migrating legacy systems to static site generators. His content is technical, detailed and tailored to practitioners looking to improve code readability, system design and deployment workflows.
Martin Schneider is a frontend developer from Germany who shares his experience building clean, fast and maintainable websites. On his blog he writes about Eleventy, CSS, Sass, JavaScript, testing with Cypress, accessibility and static site generation. His posts focus on practical workflows, explaining not only how to write better code but also why certain approaches make development more efficient and enjoyable. The blog is a valuable source of inspiration for frontend developers who care about performance, simplicity and good craftsmanship.
Yasoob Khalid is a developer and writer best known for the free, open-source book Intermediate Python and his project-driven follow-up, Practical Python Projects. His articles and books have reached 5+ million readers across 189+ countries, and his blog remains a go-to place for clear, practical Python insights. By day, Yasoob works on Azure Cloud Networking at Microsoft, and by night he continues to publish tutorials, notes, and experiments that demystify real-world Python for learners at every level. He’s also the author behind the long-running Python Tips site and newsletter, where he focuses on approachable explanations and hands-on examples.
