Zero 21

studio

From first screen to working product. Research, prototyping and developer handoff included.

No assumptions, just insight. Interviews, usability tests and validation as the foundation for every decision.

From UI to brand identity. Not separate deliverables but one cohesive experience.

Every client has a different starting point. Some come with a clear brief, others with a half-formed idea and a lot of questions. My job is to figure out where you're at, where you want to go, and what's actually needed to get there. The work changes, the approach doesn't.

End-to-end product design

Research-led decisions

Brand & product as one

From small startups to big corporates

End to end design

Research-led decisions

Brand & product

Full scope

(01)

Workwize

Zero touch global IT equipment

(02)

ING - Sparq

(RegTech) platform

(03)

Humantel

Consumer insights collective

(04)

Committos

Marketplace agency

(05)

Annual Insight

Business Intelligence Platform

(01)

Workwize

Zero touch global IT equipment

(02)

ING - Sparq

(RegTech) platform

(03)

Humantel

Consumer insights collective

(04)

Committos

Marketplace agency

(05)

Annual Insight

Business Intelligence Platform

(01)

Workwize

Zero touch global IT equipment

(02)

ING - Sparq

(RegTech) platform

(03)

Humantel

Consumer insights collective

(04)

Committos

Marketplace agency

(05)

Annual Insight

Business Intelligence Platform

cases

Selected projects

Cutting Weeks of IT Chaos Down to a Managed Flow

See work

Year

2025

Type

Feature

Turning Dead Stock Into Recovered Value

See work

Year

2025

Type

Feature

When Automation Breaks: Rebuilding from the Foundation Up

See work

Year

2025

Type

Autmation Suite

Bringing Order to the Chaos of Regulatory Compliance

See work

Year

2022

Type

Product Design

Why Zero21

Designing products is one thing. Understanding the problem behind them is another. I start with research, validate fast, and stay involved until it ships.

Validate fast, thorough where it counts

Contact

Sebastiaan Schmidt

Product Designer

About

Six years building products and brands from scratch. Problem-solver and always hands-on.

I'm Sebastiaan, a product designer and brand builder based in Amsterdam. I've spent my career designing products from the first sketches in the early days of a startup to scaling products used by hundreds of companies worldwide. Across product design and brand, always hands-on.

More about me

Amsterdam based

Remote-friendly

6+

Years of experience

services

Design that ships. strategy that sticks.

Usability testing

UX research

End-to-end design

Design

Strategy

Usability testing

UX research

End-to-end design

Design

Strategy

Contact

Talk to Sebastiaan

Sebas@zero21.studio

Phone

+31 631957689

What kind of projects do you take on?

I work mostly with early-stage and scaling startups that need a founding designer, or with established companies launching a new product or brand from scratch. I'm equally comfortable owning product design or brand identity, often both.

How long does a typical project take?

It depends on the scope. A focused feature or brand identity can ship in 2 to 4 weeks. A full product MVP or end-to-end design system usually takes 6 to 12 weeks. I'd rather scope honestly upfront than overpromise on speed.

Do you work as a freelancer or are you open to full-time roles?

Both. I take on freelance and contract work through Zero21, and I'm also open to the right full-time role at a startup or product team where I can take real ownership

How do we start working together?

The easiest way is to reach out by email or through the contact form. After a quick intro call to understand what you're building and where you're at, I'll send a proposal with scope, timeline and pricing tailored to the project.

lET'S TALK

Start your project with Zero21 Studio

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