01
Web Dev & SaaS Platforms
High-performance custom platforms designed for scale. I build robust frontend apps and dashboards that offer a native-like fluid experience.
Next.jsReactTypeScriptTailwindCSS
Est. 2016Madrid / Worldwide
Creative Devavailable for hire
Professional Web Development, React, Next.js, and Software Engineering in Madrid. Custom SaaS platforms, business automation, internal tools, AI-powered ecosystems using OpenAI and RAG. Freelance Web Developer and Technical Lead available for international projects.
DigitalProducts&Engineering
Scalable web platforms, automated sales ecosystems, and SaaS development in Madrid. I transform complex business logic into high-performance software with integrated Artificial Intelligence.
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7+Years of Full Stack Experience
5+Custom SaaS & Platforms Architected
250+Businesses Digitized
100%Agile & AI-Driven Workflows
Tools and specialties: Next.js, React, TypeScript, Tailwind CSS, Node.js, Firebase, Supabase, WordPress, Shopify, PHP, GSAP, WebGL, Framer Motion, SaaS Architecture. Web development and product engineering available in Madrid and remote.
Next.js|React|TypeScript|Tailwind CSS|Node.js|Firebase|Supabase|WordPress|Shopify|PHP|GSAP|WebGL|Framer Motion|SaaS Architecture|Next.js|React|TypeScript|Tailwind CSS|Node.js|Firebase|Supabase|WordPress|Shopify|PHP|GSAP|WebGL|Framer Motion|SaaS Architecture|
Expertise
What
I Build
Software engineering services in Madrid: React and Next.js applications, SaaS platform development, API integrations, internal tools, dashboard creation, frontend optimization. AI integration specialist: connecting products with OpenAI, large language models (LLMs), and Retrieval-Augmented Generation (RAG).
02
Business Automation & Internal Tools
Replace spreadsheets and repetitive manual tasks with tailored software that saves hundreds of hours for your organization.
Custom DashboardsAPI IntegrationsWorkflow Automation
03
AI-Powered Ecosystems
Implementing cutting-edge AI solutions including custom RAG agents and LLM integrations to enhance product value and team productivity.
OpenAIRAGLLM IntegrationSmart Search
04
CMS & WordPress Expert
Experienced PHP developer creating unique websites with CMS like WordPress and Shopify. Building tailored themes and custom plugins to fit your exact needs.
WordPressShopifyPHPCustom ThemesPlugins
Expertise
What I Build
Web Dev & SaaS Platforms
High-performance custom platforms designed for scale. I build robust frontend apps and dashboards that offer a native-like fluid experience.
Next.jsReactTypeScriptTailwindCSS
Business Automation & Internal Tools
Replace spreadsheets and repetitive manual tasks with tailored software that saves hundreds of hours for your organization.
Custom DashboardsAPI IntegrationsWorkflow Automation
AI-Powered Ecosystems
Implementing cutting-edge AI solutions including custom RAG agents and LLM integrations to enhance product value and team productivity.
OpenAIRAGLLM IntegrationSmart Search
CMS & WordPress Expert
Experienced PHP developer creating unique websites with CMS like WordPress and Shopify. Building tailored themes and custom plugins to fit your exact needs.
WordPressShopifyPHPCustom ThemesPlugins
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Frequently asked questions about web development services, frontend engineering, SaaS platforms, internal tools and AI integrations in Madrid. React, Next.js, and serverless architectures.
Frequently Asked Questions
FAQ
Both! I build high-performance web applications from scratch using modern tools like React and Next.js, and I am also an experienced PHP developer specialized in creating unique websites with CMS like WordPress and Shopify using custom themes and plugins.
Yes, I can integrate Large Language Models (LLMs), configure Retrieval-Augmented Generation (RAG) pipelines, and hook up custom AI agents into your architecture to automate processes and improve user experience.
I am deeply specialized in frontend architecture and UI/UX implementation, but I also build robust, serverless backends and APIs using tools like Firebase or Supabase to deliver end-to-end products.
A complex marketing or landing page typically takes 2-4 weeks, while a more elaborate SaaS application, custom dashboard, or CRM can take between 6-12 weeks depending on the business logic scope.
Freelance software developer available in Madrid, Spain, and remote for international projects. Contact for React, Next.js, Web Development, SaaS engineering, and technical architecture. Chrizz Lacruz — Backend & Frontend Engineer. hola@chrizzlacruz.com
Next Step
Ready to
Deploy?
Available for freelance projects or in-house roles. Let's talk about turning your idea into a concrete product.
Based in Madrid, Spain. Available remotely worldwide.
Start a ProjectDESARROLLO WEB Y DE PRODUCTO • SAAS • WORDPRESS • REACT • NEXT.JS • AI INTEGRATION • DESARROLLO WEB Y DE PRODUCTO • SAAS • WORDPRESS • REACT • NEXT.JS • AI INTEGRATION •