Guido
Filippo
Serio

Senior Full Stack Product Engineer building modern web architectures. Specialized in Next.js, NestJS, and AI-native development workflows.

Next.js React 19 NestJS TypeScript Shadcn/UI Nx Monorepo AI-Native

Available — Palermo, IT / USA Dual Citizen

About

001

Profile

Senior Product Engineer with 20 years of experience. Currently architecting a Next.js/NestJS Headless CMS ecosystem, bridging the gap between pixel-perfect UX and scalable backend architecture.

AI-Native Developer: I leverage LLMs (Gemini/Claude) to accelerate architectural validation and code shipping. Strong focus on Design Systems (Tailwind/Shadcn) and strictly typed TypeScript environments.

Background in multimedia production, brand strategy, and e-commerce — a rare combination of engineering depth and visual sensibility.

Core Skills

002

Backend & API

Server Architecture

NestJS, Node.js, TypeScript Strict Mode, Nx Monorepo, RESTful APIs, Zod Validation.

Frontend

Interface Engineering

Next.js 15+ (App Router), React 19, Tailwind CSS v4, Shadcn/UI, Lucide Icons.

AI & Workflow

AI-Assisted Dev

Advanced Prompting, Context Management, Git, CI/CD pipelines.

Legacy

Platform Expertise

Vue.js, Sails.js, AWS (EC2/Load Balancers), SQL/NoSQL databases.

E-commerce

Commerce Systems

Shopify (Liquid, Architecture), Adobe Business Catalyst, Analytics.

Multimedia

Creative Production

Adobe Creative Suite, Avid Composer, Pro Tools, 3D Modeling.

Experience

003

2026 — Present

Lead Product Engineer & System Architect

JsonPages Ecosystem · Stealth Startup

Building a Headless CMS & Page Builder ecosystem using Nx Monorepo. Full stack architecture with NestJS and Next.js, enforcing strict boundaries with Discriminated Unions and Zod schemas. Created shared UI library based on Shadcn/UI. Implemented AI-driven development as a "Force Multiplier".

2018 — 2025

E-commerce Manager & Developer

IN.AG.E. · Messina, IT

Development of B2B e-commerce solutions and communication management for the agricultural sector.

2016 — 2021

Digital Strategist & Shopify Developer

Do.ls Wholesale · Palermo, IT

Shopify architecture design and custom frontend integration. Built a 22,000 user community pre-launch and scaled e-commerce from €0 to €80k revenue in the first semester.

Selected Works

004

01 / 04

Technical Analysis Branding

Finance · 3D Visual Identity

3D Visual Identity for a Technical Analysis Education platform. Translating complex financial data concepts into high-impact visuals.

↗

02 / 04

Luxury Asset Branding

Heritage · Premium Winemaking

Identity design for Premium Winemaking. Communicating heritage, solidity, and exclusivity for high-value physical assets.

↗

03 / 04

Corporate Identity Systems

Brand Guidelines · Visual Governance

Comprehensive Brand Guidelines. Strict visual governance, clearspace rules, and color consistency for scalable corporate identities.

↗

04 / 04

Zero-Runtime Web Architecture

React/Next.js · Infrastructure

Secure, High-Performance Web Infrastructure based on React/Next.js. Designed for institutions requiring maximum security and zero-maintenance.

↗

GuidoFilippoSerio