Guilherme Duarte | Portfolio

// ABOUT ME

Hey! I am Guilherme Duarte, a recent
Computer Science graduate from
Universidade do Minho, Braga.

I love building clean, tested,
production-ready backend APIs.
Looking for my first junior backend
role in the Braga / Porto area.

VOLUNTEER

CoderDojo instructor and
Banco Alimentar volunteer.

HOBBIES

When not coding I enjoy fishing and
competitive board games -- currently
deep into Warhammer 40K.

CHARACTER STATS

Backend Dev

Problem Solving

Java / Spring

Linux

Communication

// SKILLS

PROGRAMMING LANGUAGES

Java

C

SQL

C# / .NET

Python

FRAMEWORKS

Spring Boot

Spring Security

Spring Data JPA

JUnit / Mockito

INFRA AND TOOLS

Docker

PostgreSQL

Git / GitHub

Linux

Maven

SPOKEN LANGUAGES

Portuguese

English

// PROJECTS

SPLITWISE API

Splitwise-inspired expense-splitting REST API. JWT auth, EQUAL / PERCENTAGE / EXACT splitting strategies, debt netting and greedy simplification algorithm, unit tests with JUnit 5 and Mockito.

JavaSpring BootJWTPostgreSQLDockerJUnit 5Mockito

VIEW ON GITHUB

SPOTIFUM

Spotify-inspired music platform built in Haskell. Functional architecture, playlist management, music library with full CRUD operations.

HaskellFunctionalCLI

VIEW ON GITHUB

SPORTORG DATABASE

Sports organisation database system. Relational schema design, complex queries and reporting for managing athletes, competitions and results.

SQLPostgreSQLDatabase Design

VIEW ON GITHUB

CATCHLOG API

Fish species and catch-log REST API. Built to diversify my stack beyond Java and explore the .NET ecosystem.