Simon Wijckmans

I build browser-first security products. Founder & CEO at cside. Previously Vercel, Cloudflare, and Microsoft.

Based between San Francisco, London, Lisbon, and wherever the building is happening.

Currently

Founder & CEO at cside — building browser-first security for client-side attacks, fraud, privacy, and compliance gaps.

How Peter R de Vries inspired me

A note on courage, journalism, and the mark he left.

What I learnt from Stephen Hawking

A short reflection on persistence and difficulty.

Founder & CEO, cside

2024 — now

Building browser-first security for client-side attacks, fraud, privacy, and compliance gaps.

Product Lead, Hydra

2023 — 2024

Senior PM, Vercel

2021 — 2023

Solution Architect & PM, Cloudflare

2019 — 2021

Various roles, Microsoft

Earlier

Novacene ↗

A useful frame for thinking about intelligence, systems, and what comes next.

On Writing Well ↗

A reminder that clear writing is clear thinking.

How I Hacked the Education System ↗

A personal note on building your own path.