Frunco Ruiz

Full-stack developer & AI product builder

Available for selected freelance projects

I build AI-powered web products that turn business workflows into software.

Full-stack developer specializing in SaaS, business platforms, automation and AI integrations—from architecture to production.

See what I've builtResume

End-to-end ownership

Maintainable systems

AI integration

Product-minded UX

What you get with me

I turn product requirements into shipped, maintainable software that gives you great profit.

React / Next.jsTypeScriptAI / RAGAPIs + Data

Featured projects

7+ years

experience

20+

Shipped products

24+

Technical skills

Full-stack + AI

Primary focus

Selected work

Built to look sharp.
Engineered to matter.

A curated set of product concepts and full-stack builds focused on real workflows, thoughtful interfaces and production-minded engineering.

6 published buildsFull-stackAI + product

Browse by:

Featured

Product preview

01active

AI Workflow Automation

AI-assisted workflow application for turning repetitive business tasks into configurable workflows.

What I built

Built the workflow UI, application logic, data models, authentication, and AI integrations. The system lets users configure workflow steps, provide inputs, and use AI-powered processing as part of the workflow.

My role

I handled the full-stack implementation, including the frontend, backend logic, database design, authentication, workflow functionality, and AI integration.

Next.jsTypeScriptPostgreSQLPrismaOpenAI

Case study Live demo Source

Retrieval-Augmented Generation project preview

Product preview

02active

Retrieval-Augmented Generation

Document-based question-answering application that uses retrieved context to answer questions about a private knowledge base.

What I built

Built the application interface, document/knowledge workflow, conversational experience, and LLM integration. Responses are generated from retrieved context rather than relying only on the model's general knowledge.

My role

I built the application end to end, including the frontend, data flow, retrieval workflow, AI integration, conversational UI, and supporting application logic.

Next.jsTypeScriptPostgreSQLOpenAIRAG

Case study Live demo Source

SaaS Analytics Dashboard project preview

Product preview

03active

SaaS Analytics Dashboard

A modern analytics dashboard for monitoring business performance, users, revenue and operational metrics.

What I built

A responsive SaaS dashboard designed around information hierarchy, reusable data visualization patterns and fast decision-making.

My role

I designed and implemented the dashboard interface, reusable UI patterns and data-focused presentation layer.

Next.jsTypeScriptPostgreSQLPrismaTailwindCSS

Case study Live demo Source

Career

Experience

A snapshot of the roles, products and engineering work that shaped my approach to building software.

2023-05 — Present

Full-stack developer & AI product builder

Independent / Freelance · Remote

Current

Leading end-to-end development of AI-powered applications and modern web platforms, spanning frontend architecture, backend services, API design, database systems, authentication, and AI/LLM integrations. Focused on building scalable product foundations, intelligent workflows, and polished user experiences from prototype to production.

2021-01 — 2023-04

Senior Full-stack developer

Product Development · Remote

Led development of modern web platforms and internal business applications across frontend and backend systems. Built reusable component architectures, REST APIs, database-driven workflows, authentication systems, and responsive interfaces while collaborating closely with product and design requirements.

2019-01 — 2020-12

Frontend Developer

Software Development · Remote

Developed and maintained responsive, production-grade web interfaces using modern JavaScript frameworks and component-based architectures. Focused on reusable UI systems, performance, accessibility, responsive design, and translating product requirements into polished user experiences.

Professional Credential

Certified Full-Stack Developer

GSDC Certified

Full Stack Developer Certificate from the Global Skill Development Council (GSDC), issued January 20, 2023.

Verified Credential

Full Stack Developer Certificate

A formal full-stack development credential issued by the Global Skill Development Council.

Issuing organization: Global Skill Development Council
Issued: January 20, 2023
Certificate ID: 656467464

Built into the portfolio

Ask my portfolio Assistant.

My AI portfolio assistant can help visitors explore my skills, projects, experience and the kind of products I build.

Portfolio AI

Online · Ready to answer

What kind of products can you build?

Full-stack web apps, SaaS dashboards, business platforms and AI-powered experiences — with a focus on usability, performance and maintainable architecture.

Try asking about projects, skills, architecture or experience →

Services

I will give you real profit.

From product architecture to polished interfaces and AI integrations, I focus on shipping useful software that is clear to use and practical to maintain.

Start a conversation

Product development

Service 01

Launch a new product

Turn an idea into a polished web application designed around real users, clear workflows and measurable business goals.

StrategyUXProduction

Indicative investment

Illustrative: $4k-$12k

Typical timeline

Typical scope: 3-8 weeks

Scope

Architecture, implementation and deployment.

Engineering modernization

Service 02

Modernize an existing app

Improve performance, UX, architecture and maintainability without throwing away the parts that already work.

PerformanceArchitectureUX

Indicative investment

Illustrative: $3k-$10k

Typical timeline

Typical scope: 2-6 weeks

Scope

Refactoring, performance work and maintainable systems.

Internal tools

Service 03

Business dashboards

Build focused internal tools, reporting systems and workflow applications that help teams move faster and make better decisions.

DashboardsWorkflowsData

Indicative investment

Illustrative: $3k-$9k

Typical timeline

Typical scope: 2-6 weeks

Scope

Operational interfaces, reporting and workflow automation.

AI integration

Service 04

AI-powered experiences

Add practical AI assistants, intelligent search, RAG and automation where they create useful product value.

RAGAssistantsAutomation

Indicative investment

Illustrative: $4k-$15k

Typical timeline

Typical scope: 3-8 weeks

Scope

Practical AI features integrated into real products.

Engineering stack

Skills that lead your
ideas into profit.

A modern, practical skill focused on maintainability, performance and great user experiences.

Frontend

ReactNext.jsTypeScriptTailwind CSS

Backend

Node.jsExpressREST APIsAuthenticationNextAuth

DataBase

PostgreSQLMongoDBPrismaRedis

AI & Automation

RAGAI AgentGenerative AIAI IntegrationAI AssistantsOpenAILLM IntegrationAI Automation

DevOps

GitGitHubDocker

Work attitude

Good software
starts with clarity.

Clients request is the first thing.
I reduce uncertainty before start developing — apply plan to result accurately.

Clarify

Goals & constraints

Build

Small, testable slices

Improve

Measure & iterate

Discover the real problem

Align on users, constraints, success criteria and the smallest version worth shipping.

Design the system

Choose the architecture, data model, and UX around the product — not the other way around.

Build in vertical slices

Ship working slices early, validate assumptions, and keep the system easy to change as we learn.

Perfect testing before launch

Test critical paths, improve performance, document key decisions, and leave the product ready to operate and extend.

Tell me your idea

Let's turn it into remarkable that gives you new profit.

Ready to create a digital experience that helps your brand stand out? Share your goals, and let's discuss how we can turn your ideas into a polished, high-impact solution.

Share your vision

Tell me about your goals, audience, and project needs.

Get a clear plan

Receive practical ideas, timelines, and next steps.

Build something great

Launch a professional solution designed for results.

Start a conversation

GmailSend me an email WhatsAppChat with me TelegramMessage me GitHubView my code

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Frunco Ruiz

Full-stack developer & AI product builder

Admin

Full-stack developer & AI product builder

Available for selected freelance projects

I build AI-powered web products that turn business workflows into software.

Full-stack developer specializing in SaaS, business platforms, automation and AI integrations—from architecture to production.

See what I've builtResume

End-to-end ownership

Maintainable systems

AI integration

Product-minded UX

What you get with me

I turn product requirements into shipped, maintainable software that gives you great profit.

React / Next.jsTypeScriptAI / RAGAPIs + Data

Featured projects

7+ years

experience

20+

Shipped products

24+

Technical skills

Full-stack + AI

Primary focus

Selected work