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UX/UI designer and frontend developer with 2 years of professional experience shipping digital products end-to-end—user flows, wireframes, prototypes, design systems and coded components. I translate research and complex workflows into clear interfaces and accessible, responsive UI.…

Heitor Mergulhão

UX Designer, UI Designer, Front-End Developer, +2

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UX/UI designer and frontend developer with 2 years of professional experience shipping digital products end-to-end—user flows, wireframes, prototypes, design systems and coded components. I translate research and complex workflows into clear interfaces and accessible, responsive UI.…

Available to hire

UX/UI designer and frontend developer with 2 years of professional experience shipping digital products end-to-end—user flows, wireframes, prototypes, design systems and coded components. I translate research and complex workflows into clear interfaces and accessible, responsive UI.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Portuguese

Fluent

Swedish

Fluent

Spanish; Castilian

Beginner

Work Experience

UX/UI Designer & Frontend Developer (Contract) at LocalBizGuru

September 2, 2025 - Present

Designed and shipped 8 web tools, dashboards and marketing sites for US clients, measured by client sign-off and successful launch of every project. Owned the work end-to-end from user flows and wireframes through to final UI. Cut developer rework by 75% by delivering coded HTML, CSS and ACSS components instead of static mockups. Reduced design-to-development handoff time by roughly 65% by building and maintaining a Figma design system of 25+ reusable components with documented states and variants.

UX/UI Designer (Internship) at Afry

January 1, 2025 - June 1, 2025

Shaped user flows, information architecture and interaction patterns for a national personal-safety and crisis-communication platform used by Swedish municipalities and public agencies, measured by design-lead sign-off and post-launch usability testing. Delivered 12 Figma prototypes and components reused across 20 screens, aligned assets to WCAG standards and established design principles. Kept a cross-functional team of 8 designers and developers aligned across 6 sprints via daily stand-ups, design reviews and sprint planning.

UX/UI Designer (Internship) at Byond Creative

August 1, 2024 - November 1, 2024

Delivered a full redesign of the company website, measured by founder approval and handover of an implementation-ready Figma prototype. Rebuilt the information architecture and interface around user-centred design principles. Identified competitive gaps and positioning opportunities using a benchmark of 7 competitors across Sweden, the EU and the US, combining competitive analysis with user interviews and presenting prioritized findings to the founders.

Economy Assistant at Wikona AB

August 1, 2020 - February 1, 2023

Kept financial reporting accurate and on schedule, measured by error-free monthly closes. Handled invoicing, reconciliation and administrative routines in Swedish.

Financial Analyst & Client Support at Financial Institutions

January 1, 2015 - February 1, 2020

Managed a portfolio of 80+ clients of varying size, measured by client retention and query resolution. Performed financial analysis, risk assessment and advisory support. Reduced recurring processing errors by redesigning routine workflows and documenting standard procedures, measured by fewer corrections and audit findings. Relocated to Sweden in 2020.