Guido X Jansen | Community Builder | Technical Ecosystems | DevRel Leadership

Your username is a label; your identity is a key you own. atproto splits who you are from what you're called, so you can rename freely, prove who you are with a domain you control, and carry one identity across the apps you use.

Every time I moved a community to a new platform, the exit cost members and history.

Self-hosted GitHub Actions runners on a small Hetzner VPS cut my CI wall-clock from ~12 minutes to ~3 minutes for about half the price of the GitHub-hosted minutes I was burning.

Short guide.

370 people in Vancouver, 500 online, all working on the same question: what does the internet look like when users own their data?

Every keystroke becomes a record.

AI-generated junk content is flooding every community platform.

I'm building an open source forum platform on the AT Protocol.

A story about token limits, AI companions, and the sunk cost of unused mana.

Three months after my original BigTech independence article, here's what changed and why I'm building infrastructure for local AI.

Seven principles for evaluating technology choices, reducing vendor lock-in, and building a more resilient digital setup.

Over 20 years building communities around open-source platforms, I've watched a pattern repeat.

Learn how we transformed community engagement through hackathons instead of monthly idea quotas, creating 80+ community projects while building better understanding between community and product teams.

A detailed guide on moving away from vendor lock-in and Big Tech subscriptions to build a more robust, privacy-friendly, and antifragile tech setup using open source alternatives.

Building a custom audio project with Raspberry Pi and Pirate Audio hardware - a fun side project exploring hardware and software integration.

Practical insights and lessons learned from building and deploying AI workflows in production environments.

Explore how traditional commerce models are being disrupted and why businesses must innovate to survive in the rapidly evolving landscape of global commerce.

An analysis of the potential challenges and concerns surrounding AI in software development over the medium to long term.

Explore four great ways to customize Large Language Models for your specific use case, from prompt engineering to fine-tuning and RAGs & MCPs.

After almost 7 years, it was time for another switch: Moved the website from Webflow to Astro.

How food trucks master clear, instant communication and what trade show exhibitors can learn from their approach to messaging.

Exploring how software developers can adapt and thrive in an era where AI is transforming the development landscape.

Discover why exponential growth charts can be misleading and why "today" isn't a special turning point despite what many trend analyses suggest.

Learn how to create and maintain a successful B2B community, overcome unique challenges, and leverage the benefits for your business growth and customer engagement.

Let's set the record straight about some often mixed up terms in commerce

A CRO/Experimentation variant of the scientific hierarchy of evidence

You've probably heard about this divide between the functions of the Left Brain versus the Right Brain.

Building the commerce platform of the future

As announced in November I would be starting a new (Dutch) podcast series this year about CRO.

Recording of my session about creating an optimization culture

Amazing new visual SaaS CMS system!

How far do you go?

To help remember statistical constructs I've started telling stories about statistics and the first one is about the Texas Sharshooter

On October 24th, I gave a session at Nomad Mage about using psychology and data to make the decisions to improve your webshop.

Switched to gui.do and Grav CMS

Designing great experiments

Some (random) notes/learnings from my trip to Shenzhen China

How to go from “4% conversion uplift” to “€636K — €854K extra profit this year”

White-paper on the CRO Process

This is a re-post of an interview with me by the Swedish magazine eHandel

My 5 tips on building your personal brand by having a healthy personal + business presence on your social media channels.

Google Sheet calculator for your AB test sample size

Dutch Research towards e-commerce trust logo's

How to (not) use colors in your website

One year ago, I moved my blog to a .com

PersuasionAPI: A new tool that makes your website much more persuasive

Guess Magento and it's speed is a hot issue :).

Let's optimize your webshop for speed!

For business owners that have a retail store or a complete new business model but have little to no experience in the e-commerce field: this post is for you

Fun coincidence!