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Ruben R. — Full-Stack Web Developer Performance & SEO Specialist from Spain

Ruben R.

Full-Stack Web Developer Performance & SEO Specialist

Spain 6+ years
Open to offersNew to Platform
Languages
EnglishSpanish
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About

Rubén R. is a proficient Full-Stack Web Developer with a Doctorate in Electrical Engineering from the Universidad Politécnica de Madrid (UPM). He excels in building scalable digital platforms, leveraging his expertise in Core Web Vitals optimization and technical SEO to deliver high-performance web experiences. Rubén has a proven track record in constructing full-stack architectures utilizing Supabase/PostgreSQL, and he is adept at integrating advanced interactivity using technologies such as Three.js, GSAP, and the Canvas API. Currently, he develops sophisticated platforms, including a classifieds marketplace with hybrid AI integration at vendet.online, demonstrating his ability to architect and optimize systems for over 5,000 users. His work in the Healthcare/Beauty sector includes creating multilingual platforms with dynamic translation capabilities and enhancing conversion rates by 35-40%. A dual resident of Caracas and Madrid, Rubén continues to shape immersive and interactive web projects, solidifying his status as a leader in full-stack development and performance engineering.

Experience

  • Full-Stack Developer & Product Architect

    vendet.online - Classifieds Marketplace · 2024 — Present
    Designed the complete architecture utilizing Supabase (PostgreSQL), implementing Row Level Security (RLS) and Edge Functions to facilitate serverless logic. Integrated hybrid AI systems (OpenAI, Claude, OpenClaw) for content creation and moderation. Set up Sentry for proactive monitoring, effectively enhancing incident response times. Developed a virtual credit-based economy system for monetization options. Optimized performance to support over 5,000 active users with response times under 200ms.

  • Frontend Developer & Performance Engineer

    ReformaT Venezuela - Construction Services · 2024 — Present
    Developed the corporate website using Astro (SSG), achieving a performance score of 99/100 Desktop and 94+/100 Mobile on PageSpeed Insights. Achieved a significant reduction in Largest Contentful Paint (LCP) from 4.1s to 1.8s through effective image and video optimization. Built a scalable blog system with Astro Content Collections and implemented Schema.org (JSON-LD) for enhanced local SEO. Formulated a content strategy featuring over 15 articles optimized for SEO, centered around local transactional keywords. Established a CI/CD pipeline with Vercel and utilized advanced Git for seamless zero-downtime deployments.

  • Creative Web Developer & Multilingual Specialist

    Immersive Projects & Healthcare/Beauty Sector · 2024 — Present
    Created web experiences leveraging Three.js, Spline, GSAP, and Canvas API, including an interactive 3D globe featuring GLSL shaders and animated data flows. Developed multilingual systems (ES/EN/DE) enabling dynamic translation, localStorage persistence, and no-reload language switching. Designed premium interfaces incorporating glassmorphism, microinteractions, and custom cursors, along with scroll-driven animations. Focused on performance optimization to maintain 60fps in complex WebGL environments and built e-commerce landing pages that drive higher conversion rates.

Skills & Expertise

German (Fluent)Premiere ProTikTok video creationFrontend DeveloperFull Stack DeveloperNotion Consultant

Education

  • Doctorate in Electrical Engineering
    Universidad Politécnica de Madrid