LUCAS FONSECA

Fullstack developer

Hello, I'm Lucas Fonseca. I create responsive websites and performant servers

About me

I'm a Fullstack developer with experience in NextJs on the frontend and NestJs as well as .NET on the backend. I use Tailwind CSS to ensure elegant interfaces and Docker for consistent environments.

My experience covers SQL and NoSQL databases, using ORMs like Mongoose and Prisma. I'm proficient in Git and GitHub for collaborative version control.

Skills

Typescript

React

.net

Database

NodeJS

Docker

Nest

Git

Projects

HotelHopper

Fully AuthSystem with RefreshJWTtoken

Inventory management app

DotNetLibrary RestfulAPI

In Development

Console.job

Lucas Fonseca's Portfolio

Class A

Experience

Mid Level Backend Developer

Grupo CCR

June 2025 - Present

Póvoa de Varzim, Portugal

Developing an internal management system for all company departments including HR, security, and construction operations.

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Planned and initiated the granular migration from a large monolith to a modular monolith architecture

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Took an active part in the project's architecture decisions, defining patterns and module boundaries together with the team

+4 more responsibilities...

ASP.NET Core 8ASP.NET Core 10PostgreSQLXUnit+2 more

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Fullstack Developer

Coderstein

June 2024 - June 2025

Lisbon, Portugal (Remote)

Worked on two large internal projects focused on event management with features for creating itineraries and managing events with over 1,000 participants.

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Created a comprehensive Role Management System to manage user roles and permissions, improving security and access control

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Implemented major upgrades to the guest management system, ensuring the platform could efficiently handle thousands of guests

+2 more responsibilities...

ReactNestJSPostgreSQLJest+2 more

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What people think about me?

@Leo Souza - Frontend developer

Precise, analytical, proactive. These are the three steps of Lucas's work methodology. He uses available resources and those he doesn't have to develop solutions and never leaves any project hanging. Efficient, intelligent, and collaborative, this is the professional Lucas is.

@Mozart Soares - Fullstack developer

Lucas is a very hardworking and talented developer. He navigates through challenges, quickly learns new technologies, and adapts to new teams, stacks, and projects. He is an excellent addition to any team and has proven his skills in diverse projects using various languages and working in all areas (front-end, back-end, and databases). I am confident that his profile suits perfectly any software engineer opportunities that may arise.

@Calvin Soares - Fullstack developer

Lucas is a very hardworking person, always creating programming content, always helping in any way he can. He is a good person and an even better professional.

Awards

2023 – Gold medal in the regional chess tournament of northern Portugal. 🏆

2023 – Gold medal in the district chess tournament of Viana do Castelo, Portugal. 🏆

2019 – Bronze medal in OBMEP (Brazilian Mathematics Olympiad). 📊

2019 - Bronze medal in OBA (Brazilian Astronomy Olympiad). 🚀

2017 - Bronze medal in OBMEP (Brazilian Mathematics Olympiad). 📊