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Hi there! I'm Karolina Sieron, a passionate UX/UI designer with 3+ years of experience delivering human-centered digital products across B2C e-commerce, B2B SaaS, and enterprise systems. I lead end-to-end design processes—from UX research and interaction design to prototyping, implementation, testing, and hand-off. I love building and maintaining design systems, applying WCAG accessibility standards, and leveraging AI tools to accelerate delivery. I collaborate with international teams to align content with brand guidelines, optimize product pages, and use data-driven insights to iterate improvements. I'm currently deepening my expertise in behavioral design, machine learning, reinforcement learning, and AI agent development.…Hi there! I'm Karolina Sieron, a passionate UX/UI designer with 3+ years of experience delivering human-centered digital products across B2C e-commerce, B2B SaaS, and enterprise systems. I lead end-to-end design processes—from UX research and interaction design to prototyping, implementation, testing, and hand-off. I love building and maintaining design systems, applying WCAG accessibility standards, and leveraging AI tools to accelerate delivery. I collaborate with international teams to align content with brand guidelines, optimize product pages, and use data-driven insights to iterate improvements. I'm currently deepening my expertise in behavioral design, machine learning, reinforcement learning, and AI agent development.

Karolina Sieron

Product Designer, Graphic Designer, Web Designer, +1

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Hi there! I'm Karolina Sieron, a passionate UX/UI designer with 3+ years of experience delivering human-centered digital products across B2C e-commerce, B2B SaaS, and enterprise systems. I lead end-to-end design processes—from UX research and interaction design to prototyping, implementation, testing, and hand-off. I love building and maintaining design systems, applying WCAG accessibility standards, and leveraging AI tools to accelerate delivery. I collaborate with international teams to align content with brand guidelines, optimize product pages, and use data-driven insights to iterate improvements. I'm currently deepening my expertise in behavioral design, machine learning, reinforcement learning, and AI agent development.…Hi there! I'm Karolina Sieron, a passionate UX/UI designer with 3+ years of experience delivering human-centered digital products across B2C e-commerce, B2B SaaS, and enterprise systems. I lead end-to-end design processes—from UX research and interaction design to prototyping, implementation, testing, and hand-off. I love building and maintaining design systems, applying WCAG accessibility standards, and leveraging AI tools to accelerate delivery. I collaborate with international teams to align content with brand guidelines, optimize product pages, and use data-driven insights to iterate improvements. I'm currently deepening my expertise in behavioral design, machine learning, reinforcement learning, and AI agent development.

Available to hire

Hi there! I’m Karolina Sieron, a passionate UX/UI designer with 3+ years of experience delivering human-centered digital products across B2C e-commerce, B2B SaaS, and enterprise systems. I lead end-to-end design processes—from UX research and interaction design to prototyping, implementation, testing, and hand-off. I love building and maintaining design systems, applying WCAG accessibility standards, and leveraging AI tools to accelerate delivery.

I collaborate with international teams to align content with brand guidelines, optimize product pages, and use data-driven insights to iterate improvements. I’m currently deepening my expertise in behavioral design, machine learning, reinforcement learning, and AI agent development.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

German

Advanced

Spanish; Castilian

Beginner

Polish

Fluent

Work Experience

UX / UI Lead Designer at Polish Film Institute (PFI) – Institutional Platforms

March 1, 2024 - Present

Led end-to-end UX/UI design for PFI's institutional platforms, including a financial grant management system and data-heavy dashboards for national cinema reporting. Created reusable UI components, ensured consistency across the product, and collaborated with product managers, engineers, and stakeholders. Applied WCAG accessibility principles, optimized product pages, and supported agile workflows (Jira). Planned sprints, refined backlogs, documented product requirements, and aligned content with brand guidelines across international teams.

Content Manager Intern at Polish Film Institute (PFI)

July 1, 2023 - October 1, 2023

Managed content strategy for national cinema reporting, optimized content for product pages, and collaborated with design and engineering teams to maintain brand consistency and support content-driven improvements.

IT Project Manager Intern at Polish Film Institute (PFI)

July 1, 2023 - October 1, 2023

Supported IT project management across institutional platforms, coordinated stakeholders, tracked progress, and documented requirements to streamline delivery.