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About

A generalist working the seam between systems and the reasons for them.

Business Informatics student working across software engineering, artificial intelligence, and product design.

Read on

01 — Who I am

A little about me.

Portrait of Denis Cercasin.

I'm Denis — a Business Informatics student in Vienna, drawn to the space where systems meet the people and decisions they serve. The degree pairs computer science with information systems and management, and I've come to read it less as two subjects than as one skill: moving cleanly between how something is built and why it's worth building.

That interest shows up in the work I gravitate to. I like problems that sit at seams — an AI model and the humans who have to trust it, a curriculum and the students who plan around it, a raw dataset and the business decision it's meant to inform. The interesting part is rarely the isolated piece of technology; it's the translation.

In practice, I move between roles. I design and build software, I train and evaluate small machine-learning systems, I think about products and the market around them, and I care a great deal about how the result looks and feels. I'd rather be genuinely versatile than narrowly specialised too early.

02 — Beyond the work

The parts that don't fit on a CV.

Hobbies, habits, and a couple of things I'm quietly proud of. Drag, swipe, or use the arrows.

01/06
  • On foot01
    1:47personal best

    Half-marathon finisher

    Distance running started as a way to switch off during exam weeks and stuck. The Danube path does most of the convincing.

  • Over the board02
    1750rating, still climbing

    Club chess

    A standing Tuesday game at a local club. It's the same discipline as good engineering — plan a few moves ahead, then adapt when the board disagrees.

  • On film03
    36frames, no undo

    35mm photography

    A fully manual camera, one roll at a time. There's no delete button, so every frame has to be worth the shutter.

  • On two wheels04

    Cycling around Vienna

    My default way to see the city and clear my head. Most of the ideas I like best arrived somewhere between two districts.

  • In print05

    Long-form reading

    Essays, history, and the occasional dense technical book. I'd rather understand one thing deeply than skim ten.

  • In detail06

    Typography & type history

    A quiet obsession with how letters are drawn and set. It's where my eye for interface craft was first trained.

03 — What I value

How I like to work.

01

Honesty over polish

A tool that's clear about what it doesn't know earns more trust than one that hides its uncertainty behind a confident interface.

02

Craft in the unglamorous parts

Most of a product's quality lives in the data model, the edge cases, and the error states — the parts no screenshot shows.

03

Restraint as a discipline

Knowing what to leave out is the harder half of design. I aim for work that feels considered, not crowded.

04

Translation as a skill

The most useful thing I do is move a decision cleanly between the people who think in systems and the people who think in outcomes.

04 — Languages

The languages I work in.

English

Fluent (C2)

German

Fluent (C1)

Romanian

Native

Russian

Conversational (B1)

05 — Tools, technologies & domains

A working toolkit, not a badge collection.

I reach for whatever makes the idea legible fastest.

Building

  • TypeScript
  • React / Next.js
  • Node.js
  • Python
  • PostgreSQL

AI & Data

  • scikit-learn
  • PyTorch
  • RAG systems
  • pandas
  • Model evaluation

Design & Craft

  • Figma
  • Design systems
  • Prototyping
  • Accessibility

Domains

  • Fintech
  • Developer tools
  • Education
  • Productivity