Welcome to my site.

I'm Heron Lancellot, a Fullstack developer.

Next Js
TypeScript
Tailwind

I am passionate about building high-performance and scalable web applications. I have experience creating decentralized applications (dApps) and web applications from the scratch. I enjoy crafting seamless user experiences that integrate with blockchain solutions, always striving to deliver a WOW factor.

I'm constantly eager to learn and explore new tools and technologies. Currently, I am focusing on Jest and React Native to further refine my development skills and create innovative products.

Journey

Nov 2025

4th Place - ETH GLOBAL Buenos Aires 2025

ETH GLOBAL

Developed Noma, a Web3 project in the World track at ETH GLOBAL Buenos Aires 2025

🏆 4th Place

📅 ETH GLOBAL Buenos Aires 2025

💰 Prize Pool: $1,000

Nov 2025

3rd Place - Hackathon ETHSamba

ETH Samba | ETH LATAM

Created the Flik. A event managemnt plataform on Farcaster with chainlink integrations

🏆 3rd Place

📅 Hackathon ETHSamba

💰 Prize Pool: $500

2023 - 2025

Web3 Frontend Developer

Blockful

Coding in some good projects such as Swaplace, Trustful, Ai Delegate, Anticapture

2023 - 2025

Full Stack Developer

Federal Fluminense University

The Monitora UFF project.is a monitoring system that manages incidents and communication tickets between different teams. It is designed to be used across the entire university, which has over 42 educational units spread throughout Brazil and more than 500 physical cameras installed.

Mar 2024

1st Place - Hackathon ETHSamba

ETH Samba

I created the frontend of the Fair Overlord application, a project in which we won 3 out of 4 categories applied in 1st Place

🏆 1st Place

📅 Hackathon ETHSamba

💰 Prize Pool: $7,000

2023 - 2024

Frontend Developer

Web3Dev

WEB3DEV is a pioneering community-driven platform focused on the development and education of Web3 technologies. I was part of the Web3Task team, a decentralized task protocol, responsible for integrating contracts, frontend, architecture and open-source issue management.

Nov 2023

1st Place - Hackathon King of Devs 1.0

Think and Dev

I carried out the pitch in person representing the web3dev team and we won 1st place in all categories with Web3Task

🏆 1st Place

📅 Hackathon King of Devs 1.0

💰 Prize Pool: $2,000

Jun 2023

1st Place - Hackathon Pod Labs

Web3Dev

I developed the application (frontend / backend) together with Daniel Vianna, where we won 7/8 prizes in 1st place

🏆 1st Place

📅 Hackathon Pod Labs

💰 Prize Pool: $1,000

2019

Information Systems Student

Federal Fluminense University

I'm a student of Information Systems at the Federal Fluminense University, where I'm learning about software development, algorithms, data structures, and other computer science topics.

Core Technologies

Projects

Explore my work across open-source contributions, freelance projects, and hackathons

Anticapture

Anticapture

Blockful
Open-Source

Web3 security and anti-capture solutions for DAOs

Next.jsReact.jsWeb3Tailwind CSSTypeScript
Web3 Frontend Developer2025
Soroswap

Soroswap

Open-Source

Decentralized exchange protocol built on Stellar network for secure asset swaps

Next.jsReact.jsWeb3Tailwind CSSTypeScriptStellar
Web3 Frontend Developer2025
Trustful Stellar

Trustful Stellar

Blockful
Open-Source

Decentralized trust and verification protocol built on Stellar blockchain

Next.jsReact.jsWeb3Tailwind CSSTypeScriptStellar
Web3 Frontend Developer2025
A.C Forza

A.C Forza

Freelance

Website for a football club with multi-language support

Next.jsTypeScriptTailwind CSSReacti18n
Frontend Developer2025
Flik

Flik

Hackathon

Event management application on Farcaster with Chainlink integration for decentralized event coordination

Next.jsTypeScriptReact.jsTailwind CSSWeb3Chainlink
Full Stack Developer2025
Noma

Noma

Hackathon

4º lugar na track World - ETH GLOBAL Buenos Aires 2025

Next.jsReact.jsWeb3TypeScriptTailwind CSS
Web3 Full Stack Developer2025
Swaplace

Swaplace

Blockful
Open-Source

A decentralized marketplace for swapping digital assets

Next.jsReact.jsWeb3Tailwind CSS
Web3 Frontend Developer2023 - 2024
Swaplace dApp

Swaplace dApp

Blockful
Open-Source

The decentralized application interface for Swaplace

Next.jsReact.jsWeb3Tailwind CSS
Web3 Frontend Developer2023 - 2024
Trustful

Trustful

Blockful
Open-Source

Building trust in Web3 through decentralized verification

Next.jsReact.jsWeb3Tailwind CSSTypeScriptChakra UI
Web3 Frontend Developer2024
77 Innovation Labs

77 Innovation Labs

Freelance

Blockchain Innovation and technology consulting company website

Next.jsTypeScriptTailwind CSSReactNode.jsResend
Full Stack Developer2024
X Lion

X Lion

Freelance

Digital marketing and technology solutions agency website

Next.jsTypeScriptTailwind CSSReact
Frontend Developer2024
AI Delegate

AI Delegate

Hackathon

Hackathon project - AI-powered delegation platform for Web3 governance

Next.jsTypeScriptReact.jsTailwind CSSWeb3
Web3 Frontend Developer2024
Web3Task

Web3Task

Open-Source

A platform for managing and tracking Web3 development tasks

Next.jsReact.jsWeb3Tailwind CSSTypeScript
Web3 Frontend Developer2023
Web3Task (Hackathon Edition)

Web3Task (Hackathon Edition)

Hackathon

A platform for managing and tracking Web3 development tasks - Hackathon winning submission

Next.jsReact.jsWeb3Tailwind CSSTypeScript
Web3 Full Stack Developer2023