Skip to content
BackNov 7
Mateja B.
Upwork badge

Mateja B.

Senior UI UX Designer | Web Design | Mobile App Design | SaaS Expert

As a Senior UI UX Designer, I work at the intersection of product strategy, UX research, interaction design, and visual design. Every Web Design project and Mobile App Design engagement starts with understanding business goals, user behavior, and product vision before creating solutions that drive measurable results. I don't simply create interfaces, rather, I take ownership of the entire product lifecycle. From product discovery and UX strategy to wireframes, prototypes, high-fidelity UI, design systems, usability testing, and developer handoff, I help teams launch successful products. Whether it's a SaaS platform, a responsive Web Design project, or a complex Mobile App Design, my focus is always on building products that scale. My experience as a Senior UI UX Designer includes designing: • Enterprise SaaS platforms • Modern Web Design solutions • iOS & Android Mobile App Design • FinTech and banking products • Healthcare applications • AI-powered platforms • Marketplaces and eCommerce products • Dashboards and management systems I actively leverage AI throughout my design process to accelerate UX research, ideation, competitor analysis, wireframing, prototyping, and validation. AI helps me iterate faster, but successful Web Design, Mobile App Design, and SaaS products still require thoughtful product strategy and human-centered design. Industries where I deliver exceptional results 💰 Financial & Banking Services 📊 SaaS Platforms 🪷 Wellness, Fitness & Mindfulness 🖥️ Corporate Web Design 🏠 Real Estate Platforms 🏥 Healthcare & MedTech 📚 E-commerce 🚚 Logistics & Transportation 🚸 Education & EdTech ❤️ Social & Community Apps 🍾 Premium & Luxury Digital Products Over the course of my career as a Senior UI UX Designer, my work has reached 60M+ users across 30+ countries, helping companies validate ideas, launch MVPs, redesign existing products, improve conversion rates, and scale internationally. My expertise includes: ✔ Senior UI UX Designer ✔ UI UX Design ✔ UX Research ✔ Web Design ✔ Responsive Web Design ✔ Landing Pages & Websites ✔ Mobile App Design (iOS & Android) ✔ Product Design ✔ SaaS Product Design ✔ Enterprise SaaS Platforms ✔ Design Systems ✔ Figma Expert ✔ Wireframing & Prototyping ✔ User Flows & Information Architecture ✔ Usability Testing ✔ Developer Handoff If you're looking for a Senior UI UX Designer who combines strategic thinking with world-class Web Design, intuitive Mobile App Design, and extensive experience building scalable SaaS products, I'd be happy to help bring your product vision to life. Mateja Bartolovic

🇭🇷Zagreb, Croatia$100/hr100% JSS4.86 (153)Since Feb 2014
GlobeUpwork

Earnings and projects

MRR
$9.4k

Last 6 months ÷ 6

World#1,494 / 412k
🇭🇷Country#5 / 807
Revenue, last 30 days
—

Read daily since Oct 13, under 30 days

Total earnings
$899k

Billed in all: $942k

World#760 / 412k
🇭🇷Country#3 / 807
Per project
$5.4k

$57k in the last 6 months

World#32,074 / 412k
🇭🇷Country#82 / 807
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇭🇷Country#205 / 807
Projects in all
166

Across 190 contracts

43% fixed57% hourly
World#13,495 / 412k
🇭🇷Country#29 / 807

Earnings, last 30 days

$942k+$7.3k earned since Oct 13Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$930k$935k$940k$945kOct 13Oct 26Nov 7

Tracked from Oct 13, 2026.

Skill rankings: Top 0.11% in Adobe Photoshop

Top 1% in 20 of 20 skills, ranked by MRR among everyone on Upwork with the skill.

  1. #5App Design1,737 freelancers · 🇭🇷 #1Top 0.29%
  2. #5Mockup1,593 freelancers · 🇭🇷 #1Top 0.31%
  3. #7Interaction Design1,358 freelancers · 🇭🇷 #1Top 0.52%
  4. #12User Flow1,972 freelancers · 🇭🇷 #1Top 0.61%
  5. #13UX Research2,772 freelancers · 🇭🇷 #1Top 0.47%
  6. #19Mobile UI Design4,166 freelancers · 🇭🇷 #1Top 0.46%
  7. #22Wireframing3,877 freelancers · 🇭🇷 #1Top 0.57%
  8. #23Prototyping3,352 freelancers · 🇭🇷 #1Top 0.69%