j
john_seliss

Selis

@john_seliss

complex website designer

Brazil
English, Portuguese, Spanish
About me
Freelance Web Developer & UI/UX Specialist crafting custom web systems, high-converting institutional websites, and performant interfaces. Core Services Offered: • Custom Web Systems: Front-end architecture & API integrations. • Institutional Websites: Mobile-first design built for conversion. • UI/UX & Design Systems: Wireframes, prototypes & visual assets. • PageSpeed & SEO: Performance optimization & technical SEO. PDF resume attached with full tech skills and portfolio. Let's connect!... Read more

Skills

j
john_seliss
Selis
Offline • 

See my services

Custom Websites
I will develop a high performance web site or landing page
From$95 / projectMore details

Portfolio

Work experience

Self_Employed

Freelance Web Developer & UI/UX Specialist

Self Employed • Freelance

Jun 2026 - Present • 3 mos

Freelance Web Developer and UI/UX Specialist delivering custom digital platforms for diverse business sectors (including gastronomy, wellness, fitness, and corporate operations). Key Responsibilities & Highlights: • Bespoke Web Systems: Designed and deployed interactive web platforms and dashboards with custom business logic and API integrations. • UI/UX & Product Design: Created seamless user journeys, responsive wireframes, interactive prototypes, and scalable design systems. • Performance & SEO Engineering: Optimized client platforms for Core Web Vitals, high PageSpeed scores, and structural technical SEO. • End-to-End Client Delivery: Led projects from initial requirements discovery and visual layout to front-end engineering and final deployment.