Builder, engineer, and open source contributor.https://stephanlangeveld.com/https://stephanlangeveld.com/blog/why-i-ditched-nextjs-for-tanstack-start-and-nitro/https://stephanlangeveld.com/blog/why-i-ditched-nextjs-for-tanstack-start-and-nitro/Next.js is powerful, but the platform gravity around it is real. TanStack Start with Nitro gave me better architecture defaults and true deployment freedom.Sat, 06 Jun 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/django-made-me-better/https://stephanlangeveld.com/blog/django-made-me-better/Django is old, opinionated, and not the coolest framework at the party. It also taught me more about software architecture than anything else I've learned.Tue, 12 May 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/goodbye-github-copilot/https://stephanlangeveld.com/blog/goodbye-github-copilot/I cancelled my GitHub Copilot subscription after years of using it. Not because the product got worse — but because GitHub changed the terms of the deal I signed up for.Sun, 03 May 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/learning-new-language-with-ai/https://stephanlangeveld.com/blog/learning-new-language-with-ai/Stop reading documentation from scratch. Ask AI to generate a side-by-side comparison between a language you know and the one you're learning — then just read the diff.Tue, 28 Apr 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/picolauncher/https://stephanlangeveld.com/blog/picolauncher/I got tired of bloated home screen launchers, so I built my own. Here's what I learned about the Android launcher APIs, building for one-handed use, and the value of deliberate minimalism.Sat, 18 Apr 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/privacy-in-the-age-of-ai/https://stephanlangeveld.com/blog/privacy-in-the-age-of-ai/Tools, techniques, and best practices for maintaining digital privacy as AI systems become more capable of processing, inferring, and acting on personal data.Tue, 07 Apr 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/bun-tests-as-postman/https://stephanlangeveld.com/blog/bun-tests-as-postman/Stop clicking through Postman. Bun's test runner makes a faster, version-controlled, scriptable API testing setup — with OpenAPI spec validation thrown in for free.Sat, 28 Mar 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/ktsx/https://stephanlangeveld.com/blog/ktsx/How I built a Gradle plugin and KSP processor that compiles a JSX-like .ktsx syntax into idiomatic Kotlin DSL code — and the lessons from writing a compile-time code generator.Wed, 11 Mar 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/pip-require-virtualenv/https://stephanlangeveld.com/blog/pip-require-virtualenv/I spent years accidentally polluting my global Python environment. One environment variable fixed it permanently — and I only found it by accident.Thu, 19 Feb 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/tinyflow/https://stephanlangeveld.com/blog/tinyflow/How I built a drag-and-drop workflow editor for LLM agents using React Flow and PocketFlow — and what it taught me about visual programming, CLI tooling, and the gap between 'works in demo' and 'works in production'.Tue, 03 Feb 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/modern-javascript-2026/https://stephanlangeveld.com/blog/modern-javascript-2026/An in-depth comparison of React, Vue, and Svelte in 2026 — architecture trade-offs, rendering models, bundle size, and the performance optimization techniques that actually move the needle.Wed, 28 Jan 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/tutor-cli/https://stephanlangeveld.com/blog/tutor-cli/I built a CLI that generates a question bank on any topic, then drills you using seven different learning methods — with adaptive difficulty, spaced repetition, and persistent progress between sessions.Thu, 22 Jan 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/easy-file-transfer/https://stephanlangeveld.com/blog/easy-file-transfer/Why I built a native desktop file transfer app using Tauri, Rust, and rsync — and what I learned about bridging a Rust backend to a React frontend.Wed, 14 Jan 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/optimize-body-optimize-mind/https://stephanlangeveld.com/blog/optimize-body-optimize-mind/Past me would have laughed at this post. But diet, training, and sleep have done more for the quality of my thinking than any productivity system I've tried.Mon, 05 Jan 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/new-years-resolutions/https://stephanlangeveld.com/blog/new-years-resolutions/Every January the same cycle repeats. Big goals, early enthusiasm, quiet abandonment by February. After years of doing it wrong, here's what actually moved the needle for me.Fri, 02 Jan 2026 00:00:00 GMThttps://stephanlangeveld.com/blog/bun-ffi-rust/https://stephanlangeveld.com/blog/bun-ffi-rust/The same way Python offloads heavy computation to C extensions via NumPy or Cython, you can drop native Rust into your Bun app using bun:ffi — with near-zero overhead.Mon, 22 Dec 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/flowneer/https://stephanlangeveld.com/blog/flowneer/How I built a zero-dependency, 3kB TypeScript library for composing LLM agent workflows — fluent chains, branching, loops, parallelism, and a plugin system with no bloat.Sat, 20 Dec 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/p2p-file-transfer/https://stephanlangeveld.com/blog/p2p-file-transfer/How I built a zero-server file sharing app using WebRTC DataChannels, AES-GCM encryption, and IndexedDB — and why making WebRTC actually work is harder than the spec makes it look.Fri, 05 Dec 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/sjango/https://stephanlangeveld.com/blog/sjango/I love Django's project layout but wanted async-native Python. So I built a minimal boilerplate that brings apps, models, views, and urls to Sanic — with Tortoise ORM and Pydantic Settings.Sat, 22 Nov 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/auto-image-cropper/https://stephanlangeveld.com/blog/auto-image-cropper/How I built a browser-based tool that uses OpenCV.js (WebAssembly) to automatically detect, straighten, and crop individual photos from flatbed scanner output — and what I learned about computer vision at the edge.Sat, 08 Nov 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/cut-docker-image-size/https://stephanlangeveld.com/blog/cut-docker-image-size/Bloated Docker images slow down CI pipelines, waste registry storage, and increase attack surface. Here's how to shrink them down without sacrificing functionality.Sat, 04 Oct 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/gym-performance-dataset/https://stephanlangeveld.com/blog/gym-performance-dataset/I go to the gym every day and I love statistics. So I built a personal dataset to find out whether creatine, sleep, diet, temperature, and mood actually move the needle — without any medical tests.Fri, 22 Aug 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/reproducing-ai-results/https://stephanlangeveld.com/blog/reproducing-ai-results/You generated something great — a perfect image, a brilliant prompt, a clever piece of code. Then you lost it. Here's the trick that fixes that permanently.Thu, 24 Jul 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/mapping-how-you-think/https://stephanlangeveld.com/blog/mapping-how-you-think/I'm undoubtedly a deep thinker. But a few months ago it hit me that I'd never actually questioned how I think. Not what I think about — how I do it.Wed, 09 Jul 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/missing-linux-on-mac/https://stephanlangeveld.com/blog/missing-linux-on-mac/Productivity-wise, moving to Mac was the right call. But Linux spoils you in ways that are hard to explain until they're gone.Mon, 23 Jun 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/spa-is-overrated/https://stephanlangeveld.com/blog/spa-is-overrated/The debate between SPA and MPA is a false choice. A hybrid architecture gives you the best of both worlds, and it's easier to set up than you think.Thu, 01 May 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/subconscious-problem-solving/https://stephanlangeveld.com/blog/subconscious-problem-solving/You've been stuck for hours, then the answer appears in the shower. That's not luck — it's a mode of thinking you can learn to use deliberately.Sat, 22 Mar 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/ai-cooking-constraints/https://stephanlangeveld.com/blog/ai-cooking-constraints/I started using AI to pick random ingredients and force myself to cook under constraints. It turns out it's less about food and more about training your brain to think differently.Sat, 15 Feb 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/kali-linux-infrastructure-security/https://stephanlangeveld.com/blog/kali-linux-infrastructure-security/Kali isn't just a hacker's toy. Used responsibly on infrastructure you own, it's one of the most powerful auditing platforms available. Here's how to use it properly.Sun, 02 Feb 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/ai-personal-finance/https://stephanlangeveld.com/blog/ai-personal-finance/How AI is changing budgeting, investing, and financial planning — and the practical tools you can use today to make better financial decisions.Mon, 06 Jan 2025 00:00:00 GMThttps://stephanlangeveld.com/blog/how-to-give-estimates/https://stephanlangeveld.com/blog/how-to-give-estimates/You think you know how long something will take. You don't. Here's the process that gets you close enough to not embarrass yourself.Fri, 11 Oct 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/prompt-engineering-paradigm/https://stephanlangeveld.com/blog/prompt-engineering-paradigm/Claude will probably cover the edge cases you forgot. But being explicit in your prompts still matters — and tests are how you make that explicitness stick.Thu, 19 Sep 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/ml-model-deployment/https://stephanlangeveld.com/blog/ml-model-deployment/A step-by-step guide to moving machine learning models from notebooks into real-world production systems — serving, monitoring, versioning, and avoiding the common pitfalls.Mon, 22 Jul 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/react-forms-without-usestate/https://stephanlangeveld.com/blog/react-forms-without-usestate/React developers reach for useState on every input field by reflex. Most of the time, the browser already handles this for you — and FormData does the rest.Wed, 03 Jul 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/solve-problems-backwards/https://stephanlangeveld.com/blog/solve-problems-backwards/Start with what the solution looks like. Work backwards. Work forwards. Find where the two paths meet — that's your problem.Sun, 09 Jun 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/dependency-injection-js/https://stephanlangeveld.com/blog/dependency-injection-js/Keeping your business logic separate from the framework it runs in isn't just good architecture — it makes your code portable, testable, and far easier to maintain.Tue, 30 Apr 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/todo-lists-scattered-mind/https://stephanlangeveld.com/blog/todo-lists-scattered-mind/I've tried every productivity system. None of them stuck. Here's what I actually do instead — and why it works better for the way my brain operates.Thu, 07 Mar 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/ethical-ai-development/https://stephanlangeveld.com/blog/ethical-ai-development/Key considerations for responsible AI implementation — how bias enters systems, why transparency matters, and the practical steps developers can take to build fairer models.Fri, 09 Feb 2024 00:00:00 GMThttps://stephanlangeveld.com/blog/python-for-productivity/https://stephanlangeveld.com/blog/python-for-productivity/Practical Python scripts and tools for automating repetitive daily tasks — from file management and email to browser automation and scheduled jobs.Thu, 14 Sep 2023 00:00:00 GMThttps://stephanlangeveld.com/blog/evolution-of-ai/https://stephanlangeveld.com/blog/evolution-of-ai/An overview of AI advancements across decades — from expert systems and statistical learning to large language models and fully autonomous agents — and what comes next.Sat, 18 Mar 2023 00:00:00 GMT