Hello, I'm Diego Mezzo.

Building enterprise software professionally.
In parallel, I build digital products and ventures
with a founder's mindset: technology, value and growth.

Digital services through Hextern Digital Studio.
Founder of Prenvia.me.

Diego Mezzo - software engineer and founder
Professional Identity
Technical expertise,
concrete vision
Enterprise systems Digital products Engineering foundation
3+
Years
Professional software experience
Final year
Computer Engineering
University path in its final stage
Diego Mezzo
Experience
Enterprise applications,
real systems

Full-stack enterprise software development, where reliability, structure and maintainability are everyday requirements.

My deepest area of expertise is Java backend: Spring Boot, REST APIs, integrations, data models, business logic and workflows designed for real users.

Through consulting on enterprise projects for organizations like the Italian Ministry of the Interior and SKY - working in contexts related to Accenture and NTT DATA - I have learned to operate inside complex systems where clarity, quality and execution count every day.

Specialization
Strong foundations,
continuous growth

Java and backend are my strongest foundation, but my path is full-stack - oriented toward building complete digital products.

I study Computer Engineering and keep researching, experimenting and strengthening key product areas: frontend, UX, web design, SaaS, payments, deployment and performance.

I integrate AI tools into my workflow to increase speed, clarity and quality across analysis, prototyping, development and review - while maintaining full technical control over the result.

Direction
From enterprise software
to independent products

Prenvia.me is a SaaS platform I built independently: database, backend, frontend, payments and production deployment.

It is live, real and constantly improving.

Not a destination, but the first piece of a bigger direction: building products, ventures and digital assets with method, technology and vision.

Engineering Philosophy
Professional Experience

Enterprise projects,
real-world delivery

My experience comes from real enterprise projects: complex systems, stringent requirements, extensive codebases, production issues and teams where software quality genuinely matters.

ALI Project
Previous Enterprise Project
Java Full-Stack Consultant

Consulting through Solving Team on an Accenture project for the Italian Ministry of the Interior

I worked on ALI, an integrated digital system supporting Italian Ministry of the Interior procedures in the areas of immigration, citizenship, family reunification and related digital services.

portaleservizi.dlci.interno.it
Official public portal reference for the ALI project ecosystem.

Public reference for the digital services ecosystem connected to the ALI project.

Java Spring Boot MySQL Microservices +9 more
COPERNICO Project
Current Enterprise Project
Java Full-Stack Consultant

Consulting through SI2001 on an NTT DATA project for SKY

I currently work on COPERNICO, an NTT DATA project for SKY linked to the digital portal for products, offers and online subscription flows. My work covers backend evolution, integrations, API contracts, release support and enterprise service maintenance.

sky.com
Official Sky website reference for the COPERNICO project ecosystem.

Public reference for the digital subscription and product ecosystem connected to the COPERNICO project.

Java Spring Boot Microservices Angular +11 more
SERVICES

Turning technical skill
into tailored digital solutions

I bring my skills to market on two tracks: Hextern Digital Studio, the brand I use to design and build tailored digital solutions for companies and professionals, and technical consulting on enterprise projects, where I join existing teams under collaboration contracts.

Digital studio
Hextern Digital Studio

For commercial work I operate through Hextern Digital Studio: the brand I created to take digital services to market and build solutions made to measure.

Websites, applications, software, automations and AI integrations, designed with an approach that brings together engineering, product thinking and care for the experience.

hexternds.com
Hextern Digital Studio - the hexternds.com homepage
Hextern Digital Studio
Tailored digital services
Websites & digital experiences

An online presence built to measure: fast and credible.

E-commerce

Online selling, catalogue and payment flows.

Custom software & web apps

Internal tools, platforms and management systems.

AI & automation

Repetitive work that starts running on its own.

CRM & integrations

Systems that talk to each other, data that stays aligned.

Digital identity & content

Brand, visuals and communication that hold together.

Technical consulting

Working alongside enterprise project teams

Beyond the work I run through the studio, I collaborate directly with companies and software houses on projects already underway, under ongoing collaboration contracts or agreements tied to a single goal.

I join the team as a developer and technical reference point: requirement analysis, backend and full-stack development, architecture review and delivery support, with the same method I apply on enterprise projects.

  • Backend and full-stack development alongside your team
  • Technical analysis, architecture and code review
  • Ongoing collaboration or single-project engagements
Let's talk about working together
PROJECTS & PRODUCTS

Digital products
built from scratch

Alongside enterprise projects and the work I run through Hextern, I build products of my own. It is how I put architecture, product thinking and execution to the test. Prenvia.me is the first, and it is already live.

SaaS Platform
Prenvia.me

A real product, built from scratch and already live. Prenvia.me is a SaaS platform built to solve a concrete problem, with a roadmap that keeps evolving alongside its users.

Status Live
Launched June 2026
Type SaaS Platform
Stack Java / Spring Boot / Angular / MySQL
prenvia.me
Prenvia.me - Book appointment-based services, whenever and wherever you want
Java / Spring Boot / Angular
Full Stack SaaS Architecture
Core Technologies
The stack behind my work

Technologies, systems and workflows I use to build reliable software, polished interfaces and digital products with greater speed, quality and control.

Backend Engineering

Java and Spring Boot are my strongest backend foundation: REST APIs, business logic, security, integrations and systems designed for real-world contexts. When needed, I adopt other backend technologies, choosing the most appropriate tool for the problem.

Java Spring Boot REST APIs Security + More
Modern Web Interfaces

Angular is the technology where I have the most frontend experience, especially in professional contexts. I build modern, responsive and polished interfaces, adapting to other stacks when the project calls for it.

Angular TypeScript HTML/CSS UI + More
AI

I integrate AI tools into my work process to accelerate research, analysis, development, design iteration and automation. The goal is not to delegate control, but to increase speed and quality while maintaining technical judgment.

Claude OpenAI Workflows Automation + More
Data, Billing & Integrations

Databases, authentication, payments, webhooks and external services designed to support real product and business flows.

MySQL Stripe Webhooks OAuth + More
Digital Experience

Responsive layouts, visual structure, copy, motion and UI details designed to make software and web products clearer, more modern and more credible.

UI/UX Design System Responsive Motion + More
Get in touch

Let's start
a conversation

Whether it is a project with Hextern, a professional opportunity, a product idea or a simple technical conversation, feel free to reach out.

Prefer a short conversation? Switch to Intro call.

Send a message

Write to me about a project with Hextern, collaborations, professional opportunities, products or technical conversations.

  • Hextern project / services
  • Professional opportunity
  • Collaboration
  • Technical conversation
  • Prenvia
  • General message

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