I design digital products that turn complexity into intuitive experiences

Senior Product Designer with 10+ years in B2B SaaS, enterprise platforms and complex workflows — from research and information architecture to UI, design systems and AI-assisted builds.

Enterprise SaaSComplex workflowsDesign systemsAI-assisted design & build
Daniel Zec
10+Years in product
3Client countries
14+Products designed

Selected work

Enterprise systems, AI platforms and complex workflows

Each project shows its key flow running, the way users meet it.

Evertrust · 2023–2026

TrustView

Enterprise privacy & compliance SaaS

Assessments involved many people, phases and permissions, and users could not tell what phase an assessment was in, who was responsible, or what came next.

  • Five-phase lifecycle: Setting up, Collect, Analysis, Review, Completed
  • Three-step setup wizard and a separate reviewer approval with a locked final state
  • Clearer status language after internal usability testing
Read case study →Senior Product Designer (Contract)trustview.se ↗
trustview / assessments / newIllustrative recreation
Assessment name
1Scope2Respondents3Schedule
Respondent stateLabel
Questionnaire not opened yetNot startedPending
Answers returned by respondentReceivedSent
Labels renamed after internal usability testing

Setup wizard and status language

Own venture · 2026 Pre-launch

VodaBistra

Home water-filtration e-commerce for Serbia

Water filtration is a technical category. Customers need help choosing and clear trust signals, while a partner controls stock, delivery and payment.

  • Two paths, “I know what I need” and a guided filter finder, sharing one checkout
  • 426 answer paths tested in the finder
  • Cash on delivery shown at every decision point
  • 116 product pages, 15 categories, Figma + Storybook design system
vodabistra / filter-finderIllustrative recreation
I know what I needHelp me choose

City supplyPrivate well

Chlorine tasteLimescaleBoth
Your matchReverse osmosis systemPay on delivery
Add to cart

Guided filter finder

Client · 2026 Live

Arka Sistem

Pricing and quoting system for a PVC windows maker

The company priced windows in three Excel files, and the website calculator used an outdated table, so online prices were 8–10% below real cost.

  • One formula that matches all 1,566 prices, with 4 source errors corrected
  • Internal calculator and quote tool for 4 user roles, with private costs and margins
  • Two rounds of staff testing; 9 of 12 round-two findings closed the same day
  • 90% lighter images (23.6 MB → 2.2 MB) on React, Supabase and Cloudflare
Read case study →Product Designer & AI-Assisted Builderarkasistem.com ↗
arkasistem / price-calculatorIllustrative recreation
Window type
FixedTilt & turnDouble sash
Profile colour
Width
mm
Height
mm
Quantity
−2+
Estimated price€ 1,184
Request quote
Quote request sent

Sample values, not real prices

Quipa · 2023–2025

Quipa

Workroom management SaaS

Drapery and upholstery workrooms needed one system for projects, materials, clients, suppliers and invoicing instead of disconnected tools.

  • Defined how projects, items, clients and suppliers connect
  • Designed the cross-module workflows from an early product stage
  • Designed the QuickBooks Online integration for invoice export and sync
Senior Product Designer (Contract)quipa.com ↗
quipa / projects / living-room-drapesIllustrative recreation
Project Items Client Supplier
Invoice#1042 · draft
Linen drapery, 2 panels$1,280
Track & hardware$340
Installation$220
Total$1,840
Sync to QuickBooksSyncing…✓ Synced Invoice exported · accounts updated

Sample invoice values

Approach

Research first, then make the complexity understandable

AI makes me faster; the decisions stay mine. I label AI assumptions, check outputs against real sources, and leave out anything I can't verify.

Research

User interviews, workflow analysis and competitor reviews before any screen.

Model the system

Roles, data and states mapped first, so every screen has a place in the whole.

Information architecture

Multi-module navigation and workflows that tell people what phase they're in and what comes next.

Design systems

Figma libraries mirrored in Storybook, so design and code use the same components.

AI-assisted build

Claude, React, TypeScript and Supabase take a design to a working build engineers can ship.

10+

Years designing products

For clients in Switzerland, Sweden and the USA. Working in Serbian, Hungarian and English.

More projects

Enterprise data and medical devices

Ernst & Young · via Orion Innovation

Maestro

Refined reporting workflows in an enterprise engagement platform so teams capture data once and reuse it across reporting cycles.

Senior UI/UX Designer (Contract) · 2022–2023
North American Medical

IDD Therapy

Redesigned the on-device interface of the Accu-SPINA spinal decompression system for clearer treatment setup and session monitoring.

Senior UI/UX Designer (Freelance) · 2022
Lekar Live · mobile doctor app Fritsch · recycling logistics stake.tribe · blockchain governance Cryptonomics · AI crypto trading Ferris AI · analytics & automation People-Analytix · workforce intelligence ONOC · contracting & outsourcing management Logitize · AI container logistics

Experience

Ten years of complex products

Apr 2026 – now
Product Designer & AI-Assisted Builder
Freelance
VodaBistra · Arka Sistem
Nov 2023 – Mar 2026
Senior Product Designer
Evertrust (Contract)
Stockholm · remote
Jun 2023 – Dec 2025
Senior Product Designer
Quipa (Contract)
Atlanta · remote
Nov 2022 – May 2023
Senior UI/UX Designer
Orion Innovation, client EY
Belgrade
May – Nov 2022
Senior UI/UX Designer
North American Medical (Freelance)
Atlanta · remote
Aug 2016 – May 2022
Senior UI/UX Designer
Integration Alpha
Zurich · remote

Let's work together

I'm open to Senior Product Designer and Senior UX/UI Designer roles, and to product design projects. I work remotely from Subotica, Serbia, and as an EU citizen I can work for EU companies without a work permit.