Matija Vojvodic™
I design product systems that make complex SaaS and AI products easier to understand, build, and scale.
Most product confusion starts before the first screen is designed.
Confusing products usually come from unclear foundations: undefined objects, mismatched language, hidden assumptions, weak information architecture, disconnected workflows, and business rules that never became visible.
By the time this reaches the UI, the interface is only exposing a deeper structural problem. My work starts there.
What I help clarify.
The recurring places where complex SaaS and AI products lose their way — and where structure pays off.
Complex SaaS UX architecture
Structure that matches how users think, so deep products stay navigable as they scale.
AI product workflows
Where intelligence assists, explains, or automates — with context, controls, and feedback.
AI-ready design systems
Token-driven component systems that keep complex products consistent as they scale.
Object-oriented product modeling
Objects, relationships, and attributes that hold up in design and in code.
UX infrastructure
The architecture, navigation, and object systems everything else is built on.
Onboarding & conversion clarity
First-run and decision moments where understanding turns into trust and action.
Engineering-aware design
Design that anticipates state, edge cases, and component structure in real code.
Built in real code — CLI & Git
Prototyping and shipping in real code with AI in the loop — Claude Code, the CLI, and Git versioning.
Modern, beautiful UI
Interfaces that feel modern, polished, and effortless — the kind of UI users genuinely love.
Product systems, end to end.
A few case studies — from research and object models to the design system and the interface that shipped.
Experience behind the thinking.
This approach comes from real product environments, not isolated design exercises — complex SaaS, healthcare platforms, event technology, design systems, AI product concepts, frontend implementation, and founder-led marketing websites.
Zenitech / Quantum Health
Product Design Lead
Leading product design for a complex AI-driven healthcare platform — balancing hands-on product strategy, UX architecture, and interface design with leading a team of six across interconnected product areas. Grounding decisions in real data structures and scalable interaction patterns.
- Team
- 6 designers
AI Startup (Stealth)
Founding Product Designer
Defined the product architecture and object model — the foundation for backend data structure and information architecture. Designed the first MVP, ran early quantitative testing, and built scalable interaction patterns connecting design, engineering, and product.
Ostre
Principal Product Designer
Independent studio designing SaaS and AI-driven products — UX architecture, product design, and design systems for 0-to-1 and MVP builds, with design leadership and clarity across complex workflows.
- Client satisfaction
- 100%
Sweap
Founding Product Designer
Founding designer at an event-technology SaaS. Led a full UI/UX overhaul, established the design system, and built the design practice and handoff process from the ground up.
- User engagement
- +16%
- Net dollar retention
- 103% → 119%
- ARR
- +26%
Field notes, not thumbnails.
Short essays on product systems, UX architecture, and the structure beneath good products — the thinking behind the work.
Turn complexity into a system people can trust.
I help turn unclear product ideas, messy domains, and AI/SaaS complexity into systems people can understand, use, and trust.