About
I treat designs like my own home — tidy, aesthetic, and above all functional.
I'm a senior product designer at Toggl, working on Toggl 2.0 — calendar integration, timesheets, goals, and onboarding. I work end to end: research and usability testing, design exploration as working variants, and prototypes built in code in the production design system, so what gets tested is the real thing.
Profile
Before design I worked in digital marketing — SEO, lead generation, data analysis 📈. I spent my days sending people to websites that gave them a bad experience, and eventually decided I'd rather fix the destination than optimize the traffic. That background never left: I default to evidence, pull production data before trusting a default, and instrument what I ship.
Living out of a backpack teaches the beauty of simplicity and efficiency: everything has to be well-organised and functional, which comes in handy when designing — stripping away the unnecessary and focusing on what makes things work best.
When you're constantly adapting to new places 🌍, you quickly learn to see things from different viewpoints, and you become good at spotting patterns and figuring out what people need — skills that carry over into UX.
If it wasn't obvious enough yet, I'm drawn to travel. I'm oddly obsessed with airports ✈️ and genuinely in love with flying — or hiking 🥾, or defending my flat-white standards ☕. I equally appreciate a good routine and bad reality TV 📺.
How I work
Question the constraint
Inherited limits deserve the same research as users. The most valuable hour of my last project was reading legacy backend code to discover a famous product limit didn't exist.
Data over assumption
Contestable defaults get settled by production data, not taste — even when the data disagrees with the reference design, or with me.
The UI never lies
No progress ring that reads as full when it isn't, no faked numbers in empty states, no two surfaces disagreeing about the same data. Visual truthfulness is the product.
Diverge, then converge — and strip
Explore as working variants people can compare live. Then commit: every cut variant carries its recorded reason, and testers see one locked answer, not an exploration menu.
Experience
2025 — now
Senior Product Designer
Toggl
Toggl 2.0: calendar integration, timesheets, goals, onboarding & activation — research through coded prototypes in the production design system.
Before Toggl
Freelance Product Designer
OROOM, LAILA & others
Hotel-booking redesign that lifted conversion 6.4×; native mobile apps and a design system for an AI video platform.
Earlier
Digital Marketing Strategist
SEO · lead generation · analytics
Where the data habit comes from — and where I learned exactly how it feels to send users to a bad experience.
Toolkit
Capabilities
- Product & interaction design
- Prototyping in code (React, design systems)
- User research & usability testing
- Product analytics & instrumentation
- Design systems
- UX writing
Tools
- Figma
- React & TypeScript
- Storybook
- Claude Code
- PostHog
- Notion
Kind words
“I had the pleasure of working with Jana on multiple mobile projects at Toggl, where we embrace Product-Led Growth and putting product experiences at the center of everything we do. Jana consistently delivered thoughtful, high-quality designs with attention to details.
Jana is an excellent designer, communicator and a reliable colleague. I highly recommend Jana for any future opportunities. She would be a valuable asset to any team fortunate enough to work with her.”
“Jana helped us improve our sales funnel. We have not only happier customers but also more of them, for better acquisition costs. She delivered what she promised, on time and in excellent quality.”
See the work these principles produced.
Selected work