blockusblockus
Karrikarri@blockus.dev

Make decisions that outpace the market.

Gain the confidence to make faster, sharper calls with analytics that move at the speed of your business — not your reporting cycle.

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blockus

We don't believe in design systemsthat hold your team hostage.

Most UI libraries make a deal with you: use our runtime, follow our conventions, accept our breaking changes, and in exchange you get consistency. We think that deal is bad. Your codebase should speak your language.

blockus copies into your repo and stays there. No version conflicts, no import from a node_modules black box. When you need to change something, you change it — because the code is yours the moment you paste it in.

blockusUI blocks for production teams

Leadership

The founding team

Elena Marchetti

Elena Marchetti

Co-founder & CEO

Previously eng lead at Stripe and Vercel. Built three B2B SaaS products from zero to Series A. Believes shipping beats planning, every time.

Thomas Heuer

Thomas Heuer

Co-founder & CTO

Open-core contributor, distributed systems nerd. Led infrastructure at Planetscale. Obsessed with sub-100ms response times across every layer.

Adaeze Okonkwo

Adaeze Okonkwo

Co-founder & CPO

Design systems researcher turned product leader. Spent five years at Linear defining what great developer UX actually means in practice.

Company history

Six years. One direction.

2018

Founded in a rented desk

Three engineers, one whiteboard, and a conviction that developer tooling was broken. No pitch deck. No office.

2019

$4.5M seed round

First institutional capital. Moved into a real office. Hired five more engineers by December.

2020

10k developers on the platform

Organic growth through word of mouth. Churn under 3%. NPS hit 62 without an NPS campaign.

2021

Series A — $22M

Led by Horizon Capital. Launched the enterprise tier and a dedicated support team.

2022

100k workspaces

Crossed six figures in active workspaces. Opened offices in Berlin and Singapore.

2023

$1M ARR milestone

Eight-figure ARR. Profitable on a unit-economics basis for the first time.

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