Full Stack Developer who modernizes internal tools and delivers end-to-end SaaS — from team workflows to deploy.

Clear, usable digital products ready for the team's day-to-day work.

TIAGO WERMANN

Engineering.

Modernizing systems — like the time-tracking tool — with a current stack, Prisma, and sound engineering practices.

Data.

Tools that connect operations to recording and analysis: hours by project, travel expenses, and branches.

Product.

SaaS and internal apps designed for real workflows — mobile, access roles, and UX in the team's day-to-day.

About Me.

With a degree in Software Engineering, I work as a Full Stack developer at a Business Intelligence company — shipping internal tools and SaaS that solve real workflows: hours, travel, and data. In 3 years at the company, I have delivered more than 400 tasks on the main Business Intelligence platform — bugs and features alike.

In the company's internal hub, I modernized the time-tracking system used by the projects team. Previously, every Friday hours left Toggl and were entered manually. I rewrote the stack with Next.js, TypeScript, Tailwind, and Prisma, and built a native Toggl inside the system, with a block calendar to create, drag, and edit hours — restricted to the company network. I also shipped a travel-expense SaaS for a headquarters with six branches: CRUD for clients, companies, and expenses; traveler, manager, and admin roles; strong mobile usage; Blob attachments with compression; and a panel to monitor storage and orphaned images.

Outside of work, I built a personal finance system for income and expenses. This portfolio showcases that same stack and the way I like to work: clear, usable digital products ready for the team's day-to-day.

01

Time tracking

I modernized the company's internal hub tool and built a native Toggl — ending the weekly manual entry from the external Toggl.

02

Hours calendar

Block view on the calendar: create, drag, and edit worked hours — faster and more intuitive for the projects team.

03

Travel expenses

Multi-branch SaaS with roles, mobile-first design, Blob attachments with compression, and a storage observability panel.

04

This portfolio

A site in Next.js, TypeScript, and Tailwind — a showcase of full-stack and product work.

Featured Projects

Solutions I built.

A selection of projects that bring together engineering, data, and Artificial Intelligence.

Project mockup Business Analytics Platform
Images and links coming soon
01

Business Analytics Platform

Over 3 years working on the BI analytics platform of a Business Intelligence company, with 400+ tasks delivered across bugs and features.

  • Java
  • Hibernate
  • Spring Boot
  • JavaScript
  • CSS
  • PostgreSQL
  • Git
  • GitHub
  • Docker
  • AWS
Project mockup Time tracking — Internal hub
Images and links coming soon
02

Time tracking — Internal hub

Internal tool for the projects team to log hours by client and project. Rewritten from React/Java to Next.js, TypeScript, Tailwind, and Prisma. Previously, every Friday hours left Toggl and were entered manually; today there is a native Toggl and a block calendar to create, drag, and edit — company network access only.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Prisma
  • PostgreSQL
  • Git
  • GitHub
Project mockup Travel expenses
Images and links coming soon
03

Travel expenses

SaaS for a headquarters with six branches: salespeople log client-visit expenses. CRUD for clients, users, companies, and expenses; traveler, manager, and admin roles. Mobile-responsive; one attachment per expense (image or PDF), with image compression before Blob; storage observability panel (orphans, compression). Supabase and Vercel deploy.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Prisma
  • Supabase
  • PostgreSQL
  • Git
  • GitHub
  • Vercel Blob
  • Vercel
Project mockup Portfolio — Tiago Wermann
Images and links coming soon
04

Portfolio — Tiago Wermann

This site: a static portfolio in Next.js, TypeScript, and Tailwind, with animations, SEO, and a focus on presenting full-stack and product work.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Framer Motion
  • Git
  • GitHub
  • Vercel
Project mockup Personal Finance System
Images and links coming soon
05

Personal Finance System

A personal system for logging income and expenses, with category control and a view of cash flow.

  • JavaScript
  • Java
  • Spring Boot
  • PostgreSQL
  • Git
  • GitHub
Project mockup System for Nutritionists (planned)
Images and links coming soon
06

System for Nutritionists (planned)

Future project for patient management, meal plans, and nutritional follow-up — still in the planning phase.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Prisma
  • Supabase
  • PostgreSQL
  • Git
  • GitHub
  • Vercel
  • Vercel Blob

Tech Stack.

A set of modern technologies to build complete products, from back-end to interface.

Frontend

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS

Backend

  • Java
  • Spring Boot
  • Next.js

Database

  • PostgreSQL
  • SQL

Artificial Intelligence

  • OpenAI APIs
  • Assistentes Inteligentes
  • Automações

Version Control

  • Git
  • GitHub

Cloud

  • Docker
  • Vercel
  • AWS

Experience.

Areas and responsibilities that shaped my work as a developer.

Business Intelligence

BI Analyst

Working with data modeling, dashboards, and indicators to support strategic decisions.

  • Data modeling and preparation
  • Building dashboards and KPIs
  • Analytical reports and visualizations

Web & Applications

Full Stack Developer

End-to-end application development, from Java/Spring Boot back-end to React and Next.js front-end.

  • REST APIs with Java and Spring Boot
  • Modern interfaces with React and Next.js
  • Architecture, testing, and best practices

Artificial Intelligence

AI Integrations

Building AI integrations and intelligent assistants, including SQL query generation.

  • Integrations with AI APIs
  • Natural-language SQL assistant
  • Intelligent automations

Products & Systems

Enterprise Solutions

Building scalable enterprise solutions focused on productivity and value creation.

  • Internal systems and platforms
  • Process optimization
  • Focus on products and SaaS
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Years of experience

0+

Tasks on the BI platform

0+

Technologies mastered

Let's work together?

Open to new projects and conversations