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Software developer, from idea to result.

I'm Luis Henrique. I build complete web apps, secure APIs and automation, with a focus on clean code, performance and security.

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I work with Python, FastAPI, Java, Next.js, React and TypeScript.

What I do

What I work on, from front-end to back-end, whether as part of a team or on client projects.

Websites & Web Apps

Fast, responsive web apps and landing pages built with Next.js and React, with attention to performance, accessibility and technical SEO.

  • Responsive layout (mobile and desktop)
  • Performance and technical SEO
  • Forms and integrations
  • Publishing and domain setup

APIs & Back-end

The back-end behind the product: secure REST APIs, database modeling and reliable business rules, with authentication and data validation.

  • REST APIs (FastAPI)
  • Databases (PostgreSQL/MySQL)
  • Authentication and data validation
  • Cloud deployment (AWS)

Automation & Bots

Manual, repetitive tasks turned into automated processes: data collection (web scraping), system integrations and scheduled routines.

  • Web scraping and data collection
  • Process automation (RPA)
  • Data extraction from PDFs and spreadsheets
  • Scheduled routines and reports

Have a project in mind?

Tell me about it

Who I am

I'm a software developer focused on back-end and automation. I build REST APIs with FastAPI, work with databases, and write bots that collect and process data—with a focus on shipping something reliable and easy to maintain.

My background in Accounting helps me see the business side of every project. What really drives me is learning: I'm always studying, and I take my work seriously—organized and detail-oriented.

Photo of Luis Henrique Engel Saul

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Say hi
PythonPython
FastAPIFastAPI
AWSAWS
ReactReact
NextJSNextJS
MongoDBMongoDB
PostgreSQLPostgreSQL

Professional Experience

Homma Capital

Back-End Developer

Current

Jul 2025 - Present

KPMG

Tax Consultant

Nov 2022 - Feb 2025

The Church of Jesus Christ of Latter-day Saints

Volunteer

Feb 2019 - Feb 2021

Education

Pontifical Catholic University of Paraná

Systems Analysis and Development

In progress

Jan 2025 - Jun 2027

Pontifical Catholic University of Paraná

Accounting

Completed

Jan 2021 - Dec 2024

Courses & Certifications

Meta

Front-End Developer

Completed

2025

Google

UX Design

Completed

2025

Featured projects

Full-stack apps in production and projects that built my foundation in algorithms, data structures and back-end. Click a card to see the technical highlights.

Want to build something like this?

Let's build yours
Professional

Certificates: Legal Automation (Back-end)

PythonFastAPICelerySelenium+3

Legal automation back-end that issues certificates and fetches cases from court portals across the country. A FastAPI API receives the request, delegates the heavy lifting to Celery workers, and these control dozens of Selenium bots in parallel, consolidating everything into a final file.

Professional

Certificates: Operations Dashboard (Front-end)

Next.js 16React 19TypeScriptTailwind CSS+2

Web dashboard (Next.js 16, App Router) that orchestrates the legal automations from the browser: it builds forms that change per state, validates and normalizes the data, dispatches the requests and tracks the bots in real time, with a single download hub.

Professional

Data Extraction API for Court PDFs

PythonFastAPIPyMuPDFpdfplumber+2

FastAPI API that receives requisition-order PDFs from different courts (TRFs and TJs) and returns the data structured as JSON. Each court has its own parser, able to handle distinct layouts and even scanned documents (OCR).

Professional

Case Capture Bots on PJe (TRF5)

PythonSeleniumPlaywrightPyMuPDF+2

A bot pipeline that automates end-to-end the collection of cases on the TRF5 PJe portal: it logs in with 2FA, searches and downloads cases and official letters, reads the PDFs and cross-references payment data for court-ordered debts and small-claim payments, storing everything in a database.

In production

LunchSud: Scheduling with Admin Panel

Next.js 16React 19TypeScriptSupabase+2

A full-stack app in production for scheduling lunches by congregation: a public calendar + an admin panel for leaders, with real-time updates. Designed for users with little digital familiarity, accessing from their phones.

In development

mycapy: Personal Finance Platform

PostgreSQLSupabaseNext.jsFastAPI+2

A multi-tenant personal finance platform (budgets, accounts, goals and transactions) with per-workspace data isolation. A work-in-progress project whose core (the data architecture and PostgreSQL security) is already modeled.

In production

Color Chroma: Color Studio

Next.js 16React 19TypeScriptTailwind CSS+1

An interactive color studio to pick and convert between HEX and RGB in real time, with a color wheel, automatic text contrast and a reactive UI. Statically exported and published via CI/CD.

Academic

Library System with Data Structures

JavaOOPData Structures

A library management system in Java that applies classic data structures (graphs, binary search tree, queue and stack) to a real domain, all implemented from scratch.

Academic

Machine Learning: Win Share Prediction (NBA)

Pythonscikit-learnpandasMatplotlib/Seaborn

A regression model to estimate the Win Share of NBA players from historical data (1950 to 2017), with exploratory analysis, preprocessing and performance evaluation.

Academic

Spa Management System (Web)

PHPMySQLBootstrap

A web app to manage a spa: user authentication and an admin panel with CRUD for users, products, orders and massage therapists.

Want to work together?

Want to talk through a project, ask a question, or just say hi? Send a message and I'll reply here—or through one of the channels listed.

Up to 500 characters0 / 500

Other channels

Prefer another way? Find me here.

Emailluis.engel.saul@gmail.comLinkedInlinkedin.com/in/luishesaulGitHubgithub.com/l-Saul