← All work

Zahlenwerk

Role
Co-founder · Design & go-to-market
Year
2026
Scope
  • Brand
  • Product UI
  • Website
  • Docs
  • Free tools
  • Motion
Home page of zahlenwerk.studio
The studio site: an independent studio in Berlin, and the makers of Wealth Management by Zahlenwerk.

I co-founded a software studio for the numbers everyone else finds tedious, and I shape how it looks, reads and reaches people.

Zahlenwerk is an independent software studio in Berlin-Charlottenburg. We are the makers of Wealth Management by Zahlenwerk, portfolio software for family offices, and for clients we design and engineer software, from the data infrastructure to the interface on top of it. I co-founded it and own design and go-to-market. Laura owns process engineering and operations. The founders scope, design and build every project themselves: no account managers, no hand-offs.

Zahlenwerk identity: the Z on its 4×4 grid, the type and the palette
One mark on a 4×4 grid, one grotesque, one signal yellow.
Product page of Wealth Management by Zahlenwerk
The product page: one workspace for the whole portfolio.
Positions, calls and the books, surfacing one after another.
Wealth Management: a fund position with its valuation and cashflows
A fund position: valuation, IRR and TVPI, and every call behind them.
Wealth Management: the bookkeeping overview for one entity
The books next to the portfolio: balances, results and what is left to do.
Read the full story

Approach

The name is the thesis.

Zahlenwerk means, literally, a work of numbers. It says what we do without a tagline. The mark is a single Z built on a 4×4 grid from squares and triangles, and that same grid generates our whole icon set. One system, provably one hand.

Clarity is the brand.

We sell legibility: making dense things obvious. So the identity had to be clear too, typography-forward, high contrast, no decoration without meaning. If a studio that promises clarity cannot make its own site clear, the promise is dead on arrival.

The same hands design and build.

Design that never meets an implementation constraint turns into rework. So the studio has no hand-off between the two: what gets drawn is what gets shipped, and we use our own product every day.

Brand

The personality is quiet authority. A near-black canvas, a bold grotesque set large, one signal-yellow accent. Instead of stock imagery, a live candlestick chart runs along the hero: the studio's raw material, market data, used as its only ornament. The numbers are the decoration.

The discipline shows in the details. The logo, the icons and the service cards all sit on the same 4×4 grid, so nothing is arbitrary. If we sweat this grid, imagine how we treat your numbers.

Wealth Management by Zahlenwerk

Our own product, now in beta and already in use at a small number of family offices. One workspace for fund stakes, direct holdings and the books of every entity, which reads incoming statements and keeps the source behind every figure.

I design the product and take it to market. The design problem is the same one the studio is named after: dense, high-stakes numbers that have to become obvious.

  • Every figure has a source. Statements, call notices and reports become records, each figure tied to the page it came from. Anything uncertain waits for a person.
  • One workspace, not five tools. Positions, the directory of every entity and person, the books, banking and the documents behind them sit side by side.
  • An assistant that asks first. The portfolio can be asked anything in plain language, through Claude and ChatGPT. By default it asks before every change, and every change lands in the change log.

Positioning and services

Three service lines, in plain language:

  • Product engineering. Full-stack development of data-heavy products: parsing pipelines, APIs, and interfaces that make complex data legible.
  • Product design. Interfaces, identity, and typography for products where clarity is the feature. Designed and built by the same hands.
  • AI and data infrastructure. Document parsing, structured extraction, and MCP integrations that connect your data to Claude, ChatGPT, and whatever comes next.

Studio site

I designed and built zahlenwerk.studio. Its job: take a skeptical, senior buyer from "who are these people" to "these are the people I want on this." It opens with one line, Software built around numbers, and lets the work do the rest.

  • A near-black hero, oversized type, and a candlestick chart as the only image.
  • The product is shown working, not described: the assistant answers a real portfolio question right on the page.
  • Past work is shown as the interfaces themselves, including the workforce dashboard Laura built for Airbus and the sales reporting at SPREAD AI.
  • Bilingual, performance-minded, and the brand system rendered pixel-exact in code.

What I'd carry forward

Founding is a different design problem. With client work you get a brief. With your own studio you write it, and every decision, the name, the mark, the services, the product, is a bet on who you want to be.

One idea held it together: the most boring material in the building, numbers, is where the best design work hides, because almost no one treats it with care. Take the tedious thing seriously, and it stops being tedious. That is the studio I want to keep building: small, senior, exacting.

More work

All work ↗

Let’s build the next one together.

From first sketch to shipped code. Write, and I reply personally.

EN
DeutschEnglish