Sergi Cosialls
Sergi Cosialls

AI Solutions Architect | Full-Stack Product Builder

Open to offers · Member since 15 Jul 2026
Message
Location
Barcelona, Spain
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Senior

About

Professional summary

I am an AI solutions and product builder focused on turning business processes into deployed SaaS applications, automations, and operational systems.

I work end to end across discovery, architecture, rapid prototyping, API integration, data, payments, deployment, and troubleshooting.

My background is centered on building practical products for founders and SMEs, with a strong emphasis on moving quickly from an operational need to usable software.

I have hands-on experience with Next.js, React, Supabase, n8n, Dokploy, Stripe, and the OpenAI, Gemini, and Claude ecosystems.

I enjoy translating business rules into product logic, designing workflows that are reliable, and creating systems that improve efficiency and customer operations.

I am open to remote opportunities worldwide and interested in roles where I can combine AI, product thinking, and full-stack execution to deliver real business value.

Skills

21 capabilities

Experience

Career history

Creator / AI Product Builder CapitalizaYa

Designed a conversational intake flow that captures business context and generates structured application documents. Implemented authentication, a Supabase data model with RLS policies, Stripe payments, and end-to-end webhooks. Translated administrative eligibility rules and spending limits into product classification and validation logic.

AI Integrator Puntocampers

Deployed a self-hosted omnichannel architecture to centralise conversations and automate customer enquiries. Connected messaging, AI logic, and n8n workflows for FAQs, booking questions, and controlled human handoff.

Solutions Architect RACKS Labs

Built an interactive opportunity-cost calculator connected to a B2B lead acquisition workflow. Designed a CRM that prioritises leads and surfaces qualification reasoning to support commercial action. Orchestrated ingestion, evaluation, and storage pipelines alongside multi-container VPS deployments.

AI Developer / Ops STLINK

Implemented a pipeline that turns descriptions and images into structured technical prompts for 3D model generation. Designed subscription, payment, and generation-credit flows for a B2B-oriented SaaS experience.

Education

Learning history
No education data available.

This professional hasn’t added portfolio projects yet.

This professional hasn’t listed any services yet.

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