João Marcos About

Designer & developer, end to end.

I’m João Marcos. I design and build digital products, handling both the design and the code so nothing gets lost in translation.

WEBFLOW CERTIFIED PARTNER • WEBFLOW CERTIFIED PARTNER •

I’m a designer and developer who ships both sides of the work. Over 5+ years I’ve built fast, conversion-focused websites and apps for startups and agencies, mostly across the US and Brazil, in Webflow, Framer, WordPress, and custom front-end (HTML, CSS, JavaScript). I choose the right stack per project instead of forcing one tool.

My background in psychology shapes the rest: I care about how people actually think and behave, so the interfaces I build feel obvious to use and convert. I’m Top Rated on Upwork with a 5-star record, and a Certified Webflow Partner.

Toolkit

What I work with

Build

WebflowFramerHTMLCSSJavaScriptGSAPWordPress / ElementorRelumeFinsweet

Design

FigmaUI/UXDesign systemsPrototypingWireframingBrandingGraphic design

Performance & SEO

Core Web VitalsPageSpeedTechnical SEOSEMrushGoogle AnalyticsTag Manager

Integrations & automation

n8nZapier / MakeREST APIsFirebaseCRMScheduling & bookingChat / chatbotsSubstack / RSS

AI workflow

ClaudeClaude CodeCodexGitHub CopilotAntigravityAgentic workflows
Experience

Where I’ve worked

Surge Ads · Webflow / Framer Developer
Apr 2025 – Present
Response Design LLC · Founder & Developer / Designer (Freelance)
2022 – Present
MeteorOps · Webflow Developer & UX/UI Designer
Aug 2024 – Apr 2025
RebelMouse · UX/UI Designer
Sep 2022 – Jun 2024
Eikon Labs · UX/UI Designer & Webflow Developer
Sep 2021 – Mar 2023
Earlier · Move Digital, SEMPRE DESIGN, Tecnovix
2021 – 2022