Denis Lesak, Designer in Burbank, CA, United States
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Denis Lesak

Verified Expert  in Design


Burbank, CA, United States
Toptal Member Since
September 30, 2019

Denis is a strategic W3 product designer and design system advocate passionate about solving problems and creating deeply felt experiences. He advocates for a process-driven approach to design that relies equally on empathy, data, and the ability to ideate quickly. Denis is a deft collaborator with a reputation for consensus-building. His goal is to enrich lives, one interaction at a time.


Work Experience

Product Designer

2020 - PRESENT
  • Designed a developer workflow solution app that increased app developer sales and decreased support costs.
  • Made a developer documentation site that improved app developer sentiment and developer speed to market.
  • Created a developer marketing app that increased user engagement and reduced support costs.
Technologies: Figma, Design Systems, User Interface (UI), User Research, Visual Design, User Experience (UX)

Senior Product Designer

2019 - 2020
Disney Studios
  • Designed a 3D modeling responsive web application for mobile, tablet, and desktop experiences.
  • Created a digital fingerprint desktop web application.
  • Made a master specs guidelines responsive web application.
  • Designed a TV operating system app for children's hospitals that increased user retention and user sentiment.
  • Spearheaded the design of a new design system, including design and handoff of 30 global components along with foundational elements: color, typography, spacing, grid, icons, motion, and elevation for both light and dark themes.
Technologies: Framer X, Sketch, Design Systems, User Interface (UI), User Experience (UX), Visual Design

Head of Design Operations

2018 - 2019
  • Led all design operation efforts for Ticketmaster design as the company’s first-ever head of design operations.
  • Launched and designed 30 global components for a new design system.
  • Achieved 100% design system adoption among designers; 40% among engineers.
  • Created multiple Framer prototypes to assist engineering.
  • Designed all component usage guidelines and design on Ticketmaster.
Technologies: Zeplin, Sketch, Framer X, Design Systems, User Interface (UI), User Experience (UX), User Research, Visual Design, DataViz

Senior Product Designer

2017 - 2018
  • Led all design efforts for the successful launch of an enterprise web application.
  • Managed all usability testing for the new application launch.
  • Coordinated all UI/UX, prototyping, and interaction design efforts.
  • Created multiple Framer prototypes to assist engineering.
  • Designed a color system for complex data visualization elements.
Technologies: Zeplin, Sketch, Design Systems, Visual Design, User Interface (UI), User Experience (UX), DataViz

Senior Product Designer

2016 - 2017
  • Led all product design efforts for a startup with iOS, Android, and web applications.
  • Coordinated all usability testing for the redesign effort of the app’s most used page.
  • Managed all UI/UX, prototyping, and interaction design efforts.
  • Created several animations to assist the engineering.
  • Designed color, grid, spacing, and typography systems.
Technologies: Zeplin, Sketch

Lead Product Designer

2015 - 2016
Service Titan
  • Led all product design efforts for a startup with web, iOS, and Android mobile applications.
  • Managed a successful launch of the redesigned mobile app in the home service industry.
  • Conducted all usability testing and user interviews.
  • Led all UX, prototyping, and interaction design efforts.
  • Designed color, spacing, grid, and typography system.
Technologies: Zeplin, Sketch

Senior UX Designer

2014 - 2015
Nordstrom Rack/Hautelook
  • Led mobile web redesign efforts for both and
  • Learned the business by meeting with cross-functional leadership reviewing web analytics for both web and iOS apps.
  • Instituted low budget, guerrilla-style user interview program to observe and record user shopping behavior across the entire consumer lifecycle.
  • Achieved 0.2% conversion lift by designing proactive size filter feature.
  • Designed several feature improvements for the iOS app.
Technologies: Sketch
1994 - 1998

Bachelor of Science Degree in Consumer Science

University of Wisconsin – Madison - Madison, Wisconsin, United States


Sketch, Zeplin, Figma, Framer X, Photoshop CC


Web, Mobile, Desktop, iOS, Android


User Experience (UX), User Interface (UI), Ticketing, Enterprise, Enterprise SaaS, UI Design, Mobile UI Design, Mobile UX Design, UX Design, UX Flows, Design Systems, Product Design, Mobile UX, Mobile UI, Web UI, User Interviews, User Flows, User Research, User Journeys, User Journey Maps, Visual Design, Responsive Design, Prototyping, Usability Testing, Data Visualization, Blockchain, UI Motion, Motion Design, Computer Science, Web 3.0, DataViz

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