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Current life goal:To develop the clarity to understand what truly matters
Semmy Verdonschot

Intro

Semmy Verdonschot

I am Semmy Verdonschot and this is my website. I build things that are secure, scalable and effortless to use.

Currently working at Beter Bij Ons.

Links

Assorted Projects

FurreaWEBSHOPCustom-CMS webshop on Next.js + SupabaseCytricPLATFORMBot-hosting platform on PterodactylElite3CardsWEBSITEAnimated Next.js site with Motion + LenisGarage Hans VerdonschotWEBSITEResponsive 15-page site in vanilla JSSunshine MassageWEBSITEStatic marketing site in HTML/CSS/JSSchaftlepotWEBSITEServer-rendered PHP site with HTML/CSS/JSbunHOSTStatic-site host on Cloudflare

Open Source I Use

k3s33310Lightweight, certified Kubernetes distributionRancher25692Kubernetes cluster management platformOpenScreen38783Open-source screen-demo recordervLLM83655High-throughput LLM inference & serving engineLiteLLM51296One API/proxy for 100+ LLM providersNavidrome21904Self-hosted music streaming serverPterodactyl8975Game/bot server management panel

Videos I Come Back To

3.4M234K
The Most Dangerous Mindset I See as a Therapist
2.4M167K
The Fear of Being Average
3.6M258K
The Power of Delusional Self-Belief
615K34K
You Weren't Meant to Live Life on Repeat
563K30K
The Price of Refusing to Be Normal

Posts

RSS
Chasing the Lighthouse score (and learning which numbers to ignore)Jun 21, 2026Watching real users test the dashboardJun 10, 2026Designing dashboards people actually useMay 2, 2026The anatomy of a security assessmentApr 10, 2026The unglamorous security wins (and the crypto-miner I let in)Mar 18, 2026Macros won't die: red-team lessons from Office exploitationFeb 12, 2026Security-first web developmentJan 15, 2026Building Cytric: a hosting platform from the ground upNov 20, 2025

Podcasts

Currently listening to

My Experience

Beter Bij OnsFEB 2025 – PresentFull-Stack Engineer · React · Next.jsCytric2024 – PresentFounder · Fullstack · InfrastructureOvationSEP 2024 – FEB 2025Internship · Web Development · Webflow

Education

Bachelor ICT2022 – PresentSpecialisation: CybersecurityHigh School Diploma (HAVO)Aug 2017 – Jul 2022

What I work with

Books I Love

4.1
The Design of Everyday ThingsDon Norman
4.3
Domain-Driven DesignEric Evans
4.3
The Pragmatic ProgrammerDavid Thomas & Andrew Hunt
4.3
The Algorithm Design ManualSteven Skiena
3.8
Clean ArchitectureRobert C. Martin

What I Do

Fullstack Development

Building complete digital products end to end, from interface to backend, then tuning them to be fast, accessible and easy to find.

  • Frontend
  • Backend
  • API
  • Database Management
  • Secure Authentication
  • Performance
  • Accessibility
  • SEO

Infrastructure & DevOps

Setting up the foundations products run on: automated pipelines, cloud hosting and monitoring that keep things reliable and easy to ship.

  • CI/CD
  • Docker
  • Cloud Hosting
  • Serverless
  • Monitoring & Logging
  • Infrastructure as Code

Architecture & Systems

Designing the systems behind the interface: scalable services, data models and integrations built to grow without falling over.

  • System Design
  • API Design
  • Database Architecture
  • Caching
  • Message Queues
  • Scalability

Contact

Got a project in mind, or just want to talk security and the web?

hello@semmy.io