Open for new client work

Product design,
shipped

I’m Dejan Tomažin, a product designer in Slovenia with 13+ years in SaaS, enterprise and AI. I take products from the first strategy conversation to live software: the UX, the design system and the code. One person, no handoffs.

Book an intro callSee the work
13+ yrsDesigning SaaS, enterprise and AI software
50+Projects completed for clients and teams
Design + codeUX engineer: I design it and build the front end

Worked with

  • The Coca-Cola Company
  • BAT
  • WPP
  • VMLY&R Commerce
  • Mayo Clinic
  • 24alife
  • Nudge Labs
  • Mikropis

Selected work

Three products I designed and shipped this year. Each one is live, so you can click through the real thing, not a mockup.

Cohivo landing page: Stop scope creep before it eats your margin
Own productLive pilot
B2B SaaS · AI · 2026

Cohivo

Scope and change control for agencies. Every “can you also…” checked, priced and approved before the work starts.

DesignedStrategy & positioning
UX & UI
Design system
ShippedNext.js · Supabase
Claude API
Playwright tests
Read the case study: Cohivo

Client work, under NDA

13 years of enterprise and AI platforms I can’t show publicly.
  1. 01
    Enterprise work management platformDiscovery, UX architecture, complex workflows, design systemEnterprise SaaS
  2. 02
    AI persona platformProduct strategy, conversational UX, end-to-end designAI
  3. 03
    Product lifecycle management platformInformation architecture, user flows, research, UIProduct ops
  4. 04
    Multi-product design systemTokens, component libraries, documentation, adoptionDesign systems
Want the detail? I’ll walk you through the work live on a call.Book a walkthrough

Two ways
to work together

Senior design ownership without building a design team, or proof in code before you commit a roadmap.

End-to-end product design

One senior designer who owns the whole thread, from the first strategy conversation to the shipped interface, and stays accountable for the outcome.

  • Product discovery & strategy
  • UX research, flows, UI & interaction
  • Design systems
  • Working with your engineers through launch

Best for teams that need senior design ownership without building a design org.

AI product prototyping

From idea to a working prototype in days. Real flows and real interactions in code, ready for users, stakeholders or investors.

  • Rapid prototyping in code
  • AI product & copilot UX
  • Concept validation with real users
  • Iteration until it earns a roadmap

Best for founders and product teams that want proof before committing.

How it gets built

Six steps, one person accountable for all of them. I don’t hand off and walk away.

  1. DiscoverUsers, data, and where the real opportunity is.
  2. DefineThe right problem and what success looks like.
  3. BuildDesign and prototype in code, testable in hours.
  4. TestIn front of real people, in the real product.
  5. ShipClose to engineering all the way through launch.
  6. MeasureWatch the metric we set out to move. Improve.
Portrait of Dejan TomažinDejan Tomažin · Celje, Slovenia · CET

A designer who writes the brief, builds the prototype and stays until it ships.

I’ve spent 13+ years designing software, most of it complex SaaS, enterprise tools, AI products and design systems: places where details carry real weight.

The last few years changed how I work. AI lets me move from a question to something testable in hours, so I spend my time on the decisions that matter. When you hire me, you get one person who closes the gaps between product, design and engineering, and who judges the work by what changed for the people using it.

  • Product strategy
  • SaaS & enterprise
  • AI products
  • Design systems
  • Prototyping in code

Experience

  1. 2011 — nowProduct designer & UX engineerLead UI/UX and design systems for product and development teams, and since 2026 my own products, Cohivo and OpenSty.
  2. 2017 — 2020NUiT App · UI/UX & front-end designerLed the design of a mobile app connecting people through astrology and natal-chart compatibility.
  3. 2014 — 2016Mikropis Holding · UI/UX & front-end designerWeb and mobile apps for healthcare (Mayo Clinic, 24alife, Connected mHealth) and retail (Mercator, Merkur).
  4. 2010 — 2014BA, Media Communication · FERI, University of MariborVisual communications. First design job at Comtron, designing for an e-commerce store.

Writing

All posts
Why the most valuable designers will be M-shapedProduct DesignAI generates. UX decides.AI Product DesignDesigning AI products people actually trustAI Product DesignDesign systems that scale beyond the design teamDesign Systems

Got something
that needs to ship?

Tell me what you’re building. In a 30-minute call we’ll work out whether I’m the right person, and what the first two weeks would look like.

Book an intro callEmail me