UX Design · Product Design · Custom Applications · Consulting

Over 20 years of UX experience, combined with a founder's mindset. Fast, clear, results-driven.

UX design with an entrepreneurial eye.

I think along and ahead — as a partner, not just a designer. From my own time as a founder I know: UX doesn't end at the click, but at the question of whether a product is economically viable.

Fewer hypotheses, more impact.

I focus on what really matters — for users and for the business. Instead of long what-if rounds, I find the biggest levers and test what works.

Fast results instead of long workshops.

In just a few days to tangible insights and validated solutions — to look at, click through and show off.

A real product instead of a mockup.

With an AI-supported workflow, working prototypes and applications take shape — no click dummies. In testing you're already clicking what would otherwise only exist after sprints.

Bureau Oberhaeuser

Wenn ich eine fundierte Einschätzung zu einem Projekt brauche, weiß ich, dass Sebastian die richtigen Impulse liefert.

Martin Oberhäuser

Martin Oberhäuser

CEO

TalentBait

Was andere in Wochen zerreden, bringt Sebastian in einem halben Tag auf den Punkt.

Diana Basso

Diana Basso

CEO und Gründerin

My Services

Strategy & Consulting

Where should the product go, what comes first, what not at all? I help teams and founders sharpen direction, bring stakeholders together and cut roadmaps so that resources match the strategy.

  • Product & UX Strategy — define together where the product should go and how UX becomes the lever.
  • Getting everyone with a stake in the project aligned on shared goals before building. — get differing interests into the same boat before anything gets built.
  • Roadmap Consulting — what gets built when, with an eye on resources and risks.
UX/UI Design

From the first user interview to the tested interface. I design applications that are self-explanatory in everyday use — with clear information, well-thought-out flows and a look that fits the brand.

  • User Research & Analysis — understand who we're building for, and why.
  • First sketches of an interface without colors or images — just structure and hierarchy. & Clickable drafts that feel like a finished application but don't actually do anything under the hood. — make ideas quickly visible and testable.
  • User Interface Design — visual design that fits the brand and stays out of the way.
  • User Experience Testing — validate assumptions early with real users.
  • A solution that adapts automatically to screen sizes — from smartphone to large monitor. — solutions that work on every device, not just in the pitch deck.
Custom Applications

Custom applications are achievable today with modest resources — tailored to exactly one concrete problem instead of the mass market. From a small internal tool to a running product.

  • Functional Prototypes — real code instead of a click dummy.
  • Tailor-made Web Tools — for the gaps that off-the-shelf software leaves behind.
  • Validation with a Real Product — test assumptions on a live system.
  • Improving in loops based on what real use reveals — instead of planning everything up front. — improve what shows up in real use.
Experience Architecture

How content is structured, paths are guided and transitions are animated decides whether a product feels expansive or cramped. This is where I bring clarity to complex applications and make sure users never get lost.

  • How content is sorted and connected so you never get lost. — the right content in the right place.
  • User Flows — paths you take intuitively instead of searching for.
  • Motion Design — transitions that orient rather than impress.