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I'm Guido Castelin, a UX/UI Designer and Product Designer who creates visually captivating and highly functional web solutions. With a bachelor’s degree and over five years of experience, I’m passionate about user-centered design, prototyping, design systems, and collaborating with cross-functional teams to drive conversions.…

Guido Castelin

UX Designer, UI Designer, Web Designer, +2

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I'm Guido Castelin, a UX/UI Designer and Product Designer who creates visually captivating and highly functional web solutions. With a bachelor’s degree and over five years of experience, I’m passionate about user-centered design, prototyping, design systems, and collaborating with cross-functional teams to drive conversions.…

Available to hire

I’m Guido Castelin, a UX/UI Designer and Product Designer who creates visually captivating and highly functional web solutions.

With a bachelor’s degree and over five years of experience, I’m passionate about user-centered design, prototyping, design systems, and collaborating with cross-functional teams to drive conversions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Spanish; Castilian

Fluent

Work Experience

Sr. Product Designer at Trafilea

April 1, 2025 - April 1, 2025

Product Designer and Web Designer focusing on UX analysis, usability, prototyping, and wireframing. Projects included B2C platform design and Dashboard design. Web design for desktop and mobile experiences for B2C platforms; Research & benchmarking; A/B Testing; Creation & maintenance of Design Systems. Collaborated with product managers, developers, and CRO specialists. Stores: Shapermint, Truekind, The Spa Dr, Revel Beauty & The Bodcon.

Freelance Designer at Self-employed

October 1, 2021 - November 6, 2025

UX/UI Designer focusing on product and workflow design; Gathering insights of user behavior through Hotjar for data analysis and applying design thinking to deliver optimal solutions; Research & benchmarks of direct and indirect competitors.

Product Manager at Simply LLC

December 31, 2022 - December 31, 2022

Led product management activities; Tools: Figma, Adobe XD, Slack, Balsamiq, Hotjar, Asana, ClickUp, Miro, Notion, Whimsical, HTML, CSS. Responsibilities included wireframing, rapid prototyping, design research, storyboarding, project management, accessibility, and user research. Soft skills included effective communication, leadership, problem solving, critical thinking, and people management.

Senior Product Designer

April 1, 2022 - Present

Product design and web design for B2C platforms; UX analysis, usability, prototyping and wireframing; creation and maintenance of design systems; collaboration with product managers, developers and CRO specialists; worked with clients including Shapermint, Truekind, The Spa Dr, Revel Beauty & The Bodcon.

Freelance UX/UI Designer at Self-Employed

October 1, 2021 - Present

Gathering insights of user behavior through Hotjar for data analysis and applying design thinking to achieve the best possible solutions; product and workflow design; research & benchmarks of direct and indirect competitors.

Product Manager at Simply LL

January 1, 2019 - December 1, 2020

Product management and design leadership; scope definition, roadmapping, and cross-functional collaboration to deliver design-driven outcomes.