Sergio Leira, Designer in San Carlos de Bariloche, Río Negro, Argentina
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Sergio Leira

Verified Expert  in Design

Bio

Sergio is a UI/UX product designer with 18+ years of experience creating user-centered products and delivering end-to-end solutions for startups. He has released 40+ apps globally for brands like Disney, FIFA, and Messi. As a design team leader, he developed an award-winning app that reached 15 million users, boosting engagement, retention, and monetization. Known for his versatility and innovation, Sergio is eager to tackle new challenges and deliver impactful results.

Portfolio

Work Experience

Product Designer

2024 - 2024
Trellis Health Systems Inc
  • Designed the UI for a pregnancy-focused mobile product, ensuring compliance with industry standards and regulations.
  • Collaborated actively with stakeholders in planning the product lifecycle, including feature development and roadmap creation.
  • Developed mockups and prototypes to present designs to stakeholders, delivered handoff materials to developers, and oversaw the implementation of new features.
  • Designed an MVP that achieved a sustainable base of paid users, with downloads doubling each week.
Technologies: User Interface (UI), User Experience (UX), Graphic Design, Product Design, Mobile UX Design, Mobile UI Design, Data Visualization, Dashboard Design, Figma, App Design, iOS, Mockups, UI Components, User Flows

UI/UX Designer

2023 - 2023
SINES, Inc
  • Grew and organized a design system for a previously designed product.
  • Created new pages and flows for a web app in order for users to subscribe to the app.
  • Built a new version of the design source files in Figma.
Technologies: Mobile Design, iOS, Mobile UX Design, Mobile UI Design, Style Guides, Responsive Web Design (RWD), Web App Design, Web Application Design, Responsive Web Apps, Landing Page Design, Mockups

Mobile UX/UI Designer—Health Tracking Mobile App

2022 - 2022
Jenevive Health LLC
  • Designed a mobile app that lets people track their health, especially for a certain disease.
  • Created an interactive prototype for all the improved flows and delivered a new UI for iOS and Android devices.
  • Delivered high-fidelity mockups ready for a development handoff.
Technologies: Mobile Design, Mobile UI, Mobile UX, Mobile Mockups, Health, Health IT, Visual Design, UI Design, Mobile App Design, Prototyping, iOS, Android, Adobe Experience Design (XD), Design Systems, Component Libraries, Responsive Web Design (RWD), Mobile UI Design, App Design, Responsive Web Apps, Mockups, User Flows

UX/UI Designer

2019 - 2022
Sports Buff
  • Acted as the lead designer for the real-time fan engagement, gamification, and monetization audience platform. Included a desktop SDK, mobile app, Twitch app, website, and dashboard.
  • Created micro-interactions and iOS native solutions for the mobile app.
  • Designed an SDK solution for implementation as an OTT product.
Technologies: Adobe After Effects, Zeplin, Adobe Photoshop, Adobe Experience Design (XD), Mobile UX Design, UI Motion, Figma, Gamification, Visual Design, Mobile Design, UI Design, Mobile App Design, Web Design, Prototyping, Dashboard Design, iOS, Android, Web Applications, Design Systems, Component Libraries, Style Guides, Responsive Web Design (RWD), Mobile UI Design, App Design, Web App Design, Web Application Design, Responsive Web Apps, Landing Page Design, Landing Pages, Logo Design, Mockups, UI Components, Jira, User Flows

Mobile Headset Product Designer

2021 - 2021
RealWear - Main
  • Redesigned and improved the UI/UX flows for a small voice-activated screen Android-based tablet and watch to be worn with an industrial helmet for workers in the field, factory, or warehouse.
  • Redesigned the SaaS admin screens for an IoT-type device that includes analytics, charts, tables, and user permissions.
  • Led the UX process and workflow. Collaborated closely with a cross-functional team to build and ship designs and produced high-quality creative solutions to complex problems based on research and goals.
Technologies: SaaS, Product Design, UI Design, Prototyping, Chart Design, Dashboards, UX Design, Internet of Things (IoT), Web App UX, User Experience (UX), User Interface (UI), Visual Design, Mobile Design, Mobile App Design, iOS, Android, Figma, Design Systems, Component Libraries, Style Guides, Mobile UI Design, App Design, Web Application Design, Responsive Web Apps, B2B, Mockups, User Flows

Web/Visual Designer

2020 - 2020
MMCA Inc
  • Redesigned UX flows for the company's web app in order to improve access to their games and promote engagement and learning.
  • Helped maintain and grow their existing design system.
  • Designed the UI and interactive prototypes for their website.
Technologies: UI Design, Product Design, Web Design, UX Design, Figma, Zeplin, Responsive Web Design (RWD), Web Application Design, Responsive Web Apps, Landing Page Design

UI/UX Designer for Innovative Startup Capturing Feedback with Video via Mobile

2019 - 2020
Anatomap Limited
  • Designed an innovative mobile app that captures user feedback and includes capturing and editing photos and videos.
  • Helped delineate product decisions over software for securely storing legally admissible evidence for crime victims.
  • Designed the company website, the mobile app for iOS and Android, and the desktop client and management dashboard.
Technologies: User Interface (UI), UI Design, Product Design, Visual Design, Graphic Design, Mobile Apps, User Experience (UX), UX Design, Conversational UI, Flutter, iOS, Android, Video Capture, Questionnaires, MacOS, Mobile Design, Mobile App Design, Web Design, Prototyping, Dashboard Design, Adobe Experience Design (XD), Web Applications, Design Systems, Style Guides, Responsive Web Design (RWD), Mobile UI Design, App Design, Web App Design, MVP Design, Web Application Design, Responsive Web Apps, B2B, Landing Page Design, Logo Design, Mockups, UI Components, User Flows

UX Senior Designer

2016 - 2019
Globant
  • Served as UI/UX designer of native iOS and Android apps in addition to websites for globally recognized brands.
  • Created a variety of digital products for different industries based on service over the platform while leading a small UX/VD team.
  • Applied a user-centered design process from analysis, requirements refinement, user research, information architecture design, prototyping, usability testing, and visual designing.
Technologies: Zeplin, Adobe Illustrator, InVision, Sketch, Adobe Photoshop, Mobile UX Design, Visual Design, Mobile Design, UI Design, Mobile App Design, Web Design, Prototyping, Dashboard Design, iOS, Android, Adobe Experience Design (XD), Web Applications, Design Systems, Component Libraries, Fintech, Style Guides, Responsive Web Design (RWD), Mobile UI Design, Data Visualization, App Design, Web App Design, MVP Design, Web Application Design, Responsive Web Apps, B2B, Landing Page Design, Brand Design, Logo Design, Mockups, UI Components, Jira, User Flows

Mobile Designer

2018 - 2018
SPD Tech
  • Designed the Ground Dash Mobile app UI, a safety app disguised as a fleet management tool.
  • Refined product aspects in order to give the app a more user-centered approach.
  • Designed the complete UI in iOS and Android for implementation over Xamarin.
  • Reorganized complex data inputs and large forms into friendly user interactions.
  • Built a completely interactive prototype for the app with InVision.
  • Created deliverables to hand off development and style guides.
Technologies: Android, iOS, Visual Design, Mobile Design, UI Design, Mobile App Design, Prototyping, Mobile UI Design, App Design, MVP Design, User Flows

UI/UX Lead Designer

2014 - 2016
Iamat
  • Served as UI/UX designer for iOS, Android, and Windows mobile apps.
  • Contributed to UI/UX designs for responsive websites.
  • Created apps designs which won the company design awards.
  • Built interactive prototypes for a variety of apps.
  • Designed apps with more than 11 million downloads.
Technologies: Zeplin, Adobe Illustrator, InVision, Sketch, Adobe Photoshop, Mobile UX Design, Gamification, Visual Design, Mobile Design, UI Design, Mobile App Design, Web Design, Prototyping, Dashboard Design, iOS, Android, Web Applications, Responsive Web Design (RWD), Mobile UI Design, App Design, Web App Design, MVP Design, Web Application Design, Responsive Web Apps, B2B, Landing Page Design, WordPress, Brand Design, Logo Design, Mockups, UI Components, User Flows

Education

2008 - 2012

Photographer in Fine Art Prints

DB Photo Studio - Buenos Aires, Argentina

2002 - 2007

Bachelor's Degree in Graphic Design

Nueva Escuela de Diseño y Comunicacion - Buenos Aires, Argentina

Certifications

OCTOBER 2024 - PRESENT

Design Thinking

Udemy

JUNE 2019 - PRESENT

Web Design

Acamica

MAY 2017 - PRESENT

Web Designer

Acamica

MAY 2007 - PRESENT

Fine Art Prints

Escuela de Fotografia DB - Buenos Aires, Argentina

Skills

Tools

Adobe Experience Design (XD), Adobe Illustrator, Adobe Photoshop, InVision, Zeplin, Figma, Sketch, Adobe After Effects, Adobe InDesign, ProtoPie, Jira

Platforms

Android, iOS, Apple TV, MacOS, Windows Phone, WordPress

Industry Expertise

Sports, Health

Other

Mobile UI, Mobile UI Design, User Interface (UI), Responsive Design, User Experience (UX), Wireframing, Prototyping, Dashboard Design, Web Applications, Product Design, Web Design, Visual Design, Mobile App Design, Mobile Design, UI Design, Mobile UX Design, Mobile Apps, App Design, Web App Design, MVP Design, Web Application Design, Responsive Web Apps, iOS App Design, Android App Design, Visual Art, Digital Product Design, UX Design, Gamification, Photography, Branding, Chromecast, UI Motion, Graphic Design, Design Systems, Component Libraries, UI Components, Mockups, Style Guides, Responsive Web Design (RWD), Data Visualization, B2B, Landing Page Design, Landing Pages, Brand Design, Logo Design, User Flows, Mobile UX, TV, TV Broadcasting, Streaming, Video on Demand (VOD), Apple TV UI, Web UI, SaaS, Interactive UI, Soccer, SaaS Design, Information Architecture (IA), Web UX, App UX, App UI, Social, Mobile App UI, TV Shows, Interface Design, Software as a Service (SaaS), Big Data, Chart Design, Dashboards, Internet of Things (IoT), Web App UX, Mobile Mockups, Health IT, Conversational UI, Flutter, Video Capture, Questionnaires, Fintech, Design Thinking, Responsive UI

Experience

  • UI Design - 12 years
  • Adobe Photoshop - 12 years
  • Mobile Design - 12 years
  • Mobile App Design - 8 years
  • iOS - 8 years
  • Product Design - 6 years
  • Figma - 6 years
  • Design Systems - 4 years

Tools

  • Adobe Photoshop
  • Figma
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