"Guido is a thought leader in community building and developer relations. Any company serious about building an ecosystem should talk to him."
I build community functions for tech products.
For 21+ years I've helped tech teams turn developer & customer intelligence into product strategy, grounded in cognitive psychology and a habit of testing my assumptions. I help build communities, and the teams that run them.
- Bluesky Post 5d ago
Signed! Please reach out to @sherif.mu.social if you want to check out and sign the document as well. Only if you're a developer/engineer/founder operating in 🇪🇺 👇
Open this Bluesky post in a new tab - Bluesky Post 5d ago
Welkom Guus(je)! 🪿
Open this Bluesky post in a new tab - Bluesky Post 3d ago
Dressing up as The Regino tomorrow
Open this Bluesky post in a new tab - Bluesky Post 2d ago
Now I have and use Termux on my phone a bit, this is the first time ever that I'm thinking "yeah this might be better on a bigger (fold) screen. Not going to get an iPhone to be clear 😅, but maybe when @fairphone.com builds one...?
Open this Bluesky post in a new tab - Bluesky Post 6d ago
"if you look closely at this thing, you'll see it has a shape!" My kid is going places people
Open this Bluesky post in a new tab - Bluesky Post 5d ago
I see the #MozFest Fomo Days have started!
Open this Bluesky post in a new tab - Bluesky Post 4d ago
The missus is not at home tonight so tonight's musical dinnertime 🎶 education continues with Guns 'n Roses, AC/DC, Metallica, Meat Loaf, Golden Earring, Survivor, Muse.... (Yes they eat very slow 😅)
Open this Bluesky post in a new tab - Bluesky Post 5d ago
@scarnecchia.net your website is broken 😥
Open this Bluesky post in a new tab - Bluesky Post 6h ago
"A New Kind of Social Network" by Jack Jones
Open this Bluesky post in a new tab - Bluesky Post 5d ago
@tangled.org know you guys are very busy these days and probably already know this but just in case: login is broken (for me at least) Good luck with all the changes and fixes! 💙
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- Bluesky Post 5d ago
Gheh 😅
0 Open this Bluesky post in a new tab - GitHub Pushed code 2h agoGitHub
- Smoke Signal Going 9d agoDWeb atproto.nl meetup: AtmosphereConf lookoutMar 24, 2027Open this Smoke Signal event in a new tab
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- Smoke Signal Going 9d agoDWeb atproto.nl meetup: SpacesDec 4, 2026Open this Smoke Signal event in a new tab
- Open this Popfeed review in a new tabPopfeed 1mo agoSiloTv show · Apple TV10/10
- Tangled Pushed code 1mo agoReads lag behind the web UI right after a writeOpen this Tangled code in a new tab
- Tangled Pushed code 1mo agoLook up issues/PRs by their #number, not just record-keyOpen this Tangled code in a new tab
- Tangled Pushed code 1mo agotest(ci): probe pull_request trigger (do not merge)Open this Tangled code in a new tab
- Tangled Pushed code 1mo ago2048.socialSimple atproto game, 2048 tiles with the avatars of your friendsOpen this Tangled code in a new tab
- Open this Popfeed review in a new tabPopfeed 3mo agoFuturamaTv show · FOX8/10
- Open this Popfeed review in a new tabPopfeed 3mo agoGodzillaFilm · Roland Emmerich8/10
- Open this Popfeed review in a new tabPopfeed 3mo agoSugarTv show · Apple TV9/10
- Open this Popfeed review in a new tabPopfeed 3mo agoFinal SpaceTv show · Adult Swim10/10
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- Open this Popfeed review in a new tabPopfeed 4mo agoSexistentialAlbum · Robyn8/10
- Open this Popfeed review in a new tabPopfeed 4mo agoDe vloek van PolyfemosBook · Evert Hartman9/10
- Tangled Pushed code 4mo agoFix sifa id logomark: replace Singi Labs mark with Sifa'sOpen this Tangled code in a new tab
- Open this Popfeed review in a new tabPopfeed 4mo agoLEAN STARTUP metodikaBook · Eric Ries7/10
- Open this Popfeed review in a new tabPopfeed 4mo agoThe Man from EarthFilm · Richard Schenkman10/10
- Open this Popfeed review in a new tabPopfeed 4mo agoThe Last of UsTv show · HBO9/10
- Open this Popfeed review in a new tabPopfeed 4mo agoBeat SaberVideo game9/10
- Tangled Pushed code 4mo agobsky-avatarDynamic avatar rotationOpen this Tangled code in a new tab
- Tangled Pushed code 7mo agoatproto-plc-counterAT Protocol PLC directory counterOpen this Tangled code in a new tab
- Tangled Pushed code 7mo agosifa-lexiconsAT Protocol lexicon schemas for Sifa professional profiles (id.sifa.*)Open this Tangled code in a new tab
- Tangled Pushed code 8mo agobarazo-workspacepnpm workspace root for Barazo forum development — shared configuration, tooling, and cross-package dependency managementOpen this Tangled code in a new tab
- Tangled Pushed code 8mo agobarazo-deployBarazo Docker Compose templates for self-hostingOpen this Tangled code in a new tab
- Tangled Pushed code 8mo agobarazo-lexiconsBarazo lexicon schemas and TypeScript typesOpen this Tangled code in a new tab
- Smoke Signal Going 8mo agoATmosphereConf 2026Mar 26, 2026Open this Smoke Signal event in a new tab
- Grain Photo Oct 2026Guus in his hut
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- Grain Photo Sep 2026For those who though I was joking about wearing clogs at @atmosphereconf.org: here's pict…
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- Grain Photo Sep 2026Amsterdam by night
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- Grain Photo Sep 2026It's @thealexlichter.com starting his Vite+ talk at the @vitest.dev x @npmx.dev meetups i…
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- Grain Photo Sep 2026lunchtime!
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- Grain Gallery · 2 photos Sep 2026Helsinki 🇫🇮
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- Grain Gallery · 10 photos Sep 2026Helsinki 🇫🇮
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- Grain Gallery · 5 photos Sep 2026Helsinki 🇫🇮
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Brands I've worked with
From retail to telecom to financial services, I've helped teams across industries build stronger communities.
Writing
Talks & speaking
that's me Why this approach works
I lean on two things that don't always sit together: a cognitive-psychology read on how developers and customers actually behave, and an experimentation habit (those 500+ A/B tests at Randstad & JDE) to check what works instead of guessing. I'm still learning, mostly in the open.
Guido has a rare ability to translate community insights into tangible business intelligence, and to bring the business closer to the community.
Projects
Portable professional identity on AT Protocol. A track record built from real community contributions.
Open-source community forums where members own their data. Log in with Bluesky; reputation follows you.
200+ conversations on growth, experimentation & optimization. One of the longest-running CRO podcasts.
What my colleagues say
Recommendation excerpts written by colleagues on LinkedIn
"I'm amazed at how quickly he adopts new technologies. For example, he rapidly mastered cutting-edge topics like Agentic Development, Vibe Coding, and workflow automation. Bringing this to Spryker resulted in higher efficiency and quicker improvements, lowering our TCO."
"Guido is an excellent public speaker who gives his audience practical tips on how to create a company culture that embraces evidence-based decision making."
"What stands out most is his ability to balance strong opinions with genuine psychological safety."
Work with me
A handful of engagements each year. Pick the format that fits what you're trying to achieve.
Retainer
Community strategy, DevRel leadership or running an event or conference, as an advisor or hands-on for 1–2 days a week. Typically 6–9 months.
Talk about a retainerEvent speaker
Keynotes and workshops at your conference, company event or developer meetup. 28 countries, 207 talks so far.
Invite me to speakor just send me a note · follow on Sifa ID