Arnau López selles
@arnaulpezselles
Product engineer and UI/UX designer building AI B2B SaaS from idea to launch.
SpainWhat I'm looking for
I build digital products from zero to live—design, code, and launch. I’m strongest in full stack execution, taking ideas from Figma to production without handing off to anyone.
In the last 12 months, I shipped multiple products solo and they’re all live: a client onboarding SaaS (Gateflow), a short video app for padel players (SMASH), and a Meta Ads creative intelligence platform (Louvr Performance). I bring a founder’s perspective to every decision, because I’ve built and launched my own.
My work centers on practical outcomes—conversion, retention, and real business impact. I design user journeys and UI/UX that reduce friction during high-intensity usage, while engineering scalable backends and secure integrations for subscriptions, billing, and workflows.
I build with Next.js, Supabase, Stripe, Flutter, Firebase, Make.com, and AI, and I’ve also delivered e-commerce and growth systems across Shopify and Meta Ads. I’m now focused on shipping AI-powered automation and B2B SaaS that turn complex enterprise workflows into intuitive product experiences.
Experience
Work history, roles, and key accomplishments
En StackD ayudamos a empresas a quitarse de encima el trabajo repetitivo con software a medida e inteligencia artificial.
Construimos:
• Automatización con IA — asistentes que atienden a los clientes por WhatsApp, correo y teléfono, y procesos que se resuelven solos.
• SaaS a medida — plataformas con suscripción, panel de gestión y pagos, de la idea a producción en semanas.
• Apps — aplicaciones
SMASH is a high-performance digital product designed for athletes to track and analyze their performance (Tennis & Padel focus).
As the founder and lead builder, I took full ownership of the product lifecycle—from initial strategy and UI/UX design to full-stack mobile development.
Key Responsibilities & Achievements:
• Product Strategy: Defined the core value proposition and user journey for a n
Led the end-to-end product development, architecture, and UX/UI design for Louvr Labs, a high-performance B2B SaaS platform focused on advanced digital analytics and workflow automation.
Key Responsibilities & Achievements:
• Product Architecture & SaaS Development: Architected and scaled a complex B2B SaaS system, implementing robust business logic and optimizing data flows for specialized indus
Full-Stack Product Dev & UI/UX
Louvr Labs
Nov 2025 - Present (8 months)
Led end-to-end product development, architecture, and UX/UI for Louvr Labs, a B2B SaaS focused on advanced digital analytics and workflow automation. Built a Meta Ads ranking and reporting module and engineered secure integrations and automated backend workflows, including Stripe-based subscription billing.
Built and launched Gateflow from scratch in 48 hours — a client onboarding SaaS for agencies. Sole developer and designer.
Gateflow lets agencies send one link to new clients. The client signs the contract, fills the brief, uploads brand assets, and connects ad accounts — all in one place. The agency tracks progress in real time and receives automatic email notifications on every step completed.
Founder and lead product builder at Louvr Labs.
VALO Gallery — Founder & Creative Director
Sep 2024 – Present
Founded and launched VALO Gallery, an independent art print brand selling hand-illustrated Formula 1 circuits, cycling routes, and city prints worldwide. All illustrations made by hand on iPad Mini with Apple Pencil and Procreate — no AI art, a deliberate brand differentiator.
Built the full Shopify store from zero: theme, product page
Education
Degrees, certifications, and relevant coursework
Alcoy School of Art and Design
Advanced Technician in Graphic Design, Graphic Design
2022 - 2024
Availability
Location
SpainAuthorized to work in
Website
stackd.codesPortfolio
blockflow.ukJob categories
Skills
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