Thomas – Solidity, web3.js, Next.js, experts in Lemon.io

Thomas

From Mexico (UTC-6)flag

Blockchain Engineer|Middle-to-senior

Thomas – Solidity, web3.js, Next.js

Thomas is a Blockchain Engineer with 11+ years of experience, specializing in Web3 and DeFi product development. He has led projects involving Solidity, EVM-based systems, Node.js, React, and blockchain integrations, with a strong focus on system architecture, security fundamentals, and practical product solutions. His strengths include system design, protocol integration, and translating business requirements into technical solutions. Thomas communicates effectively with founders and adapts well to fast-paced startup environments, balancing technical decision-making with product and client needs.

11 years of commercial experience in
Blockchain
Gamedev
NFT
Mobile apps
Web3
Gaming software
Financial asset management
Main technologies
Solidity
4 years
web3.js
4 years
Next.js
5 years
Etherum
5 years
Additional skills
AWS
Blockchain
Supabase
Google App Engine
Smart contracts
GraphQL
JavaScript
MySQL
OpenGL
HardHat
ERC20
DeFi
NFT
Google Maps API
TelegramBotAPI
Crypto
Typescript
Product design
Expo
Unit testing
e2e testing
Fastify.js
Solana
Wagmi
PostgreSQL
Rust
Ethereum
iOS
Serverless Computing
Android
AI agent development
React
AI agent orchestration
LLM
Redis
Nest.js
Node.js
Claude Code
Ethers.js
AI-assisted coding
jQuery
Bootstrap
PHP
Laravel
Sanity
Direct hire
Possible
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Experience Highlights

Project Lead Developer - DeFi
May 2026 - Ongoing4 months
Project Overview

A decentralized finance platform that operates three on-chain strategies designed to generate yield through liquidity provision on decentralized exchanges. The strategies provide liquidity to trading pools while managing the associated market exposure through hedging mechanisms. The platform combines liquidity provision and risk management to support more structured yield-generation approaches. It enables users to access automated on-chain strategies focused on earning returns while mitigating market-related risks.

Responsibilities:
  • Led development for a DeFi project focused on on-chain liquidity strategies.
  • Worked on systems that earned from providing liquidity to decentralized exchanges.
  • Supported hedging of resulting market exposure.
Project Tech stack:
Solidity
AWS
Next.js
DeFi
Nest.js
GraphQL
Wagmi
Blockchain Developer | Solidity & Rust
Feb 2025 - May 20261 year 3 months
Project Overview

A blockchain-based platform that helps users generate yield on digital assets through advanced decentralized finance (DeFi) strategies. It provides tools for accessing and managing yield-generating opportunities across blockchain ecosystems. The platform aims to simplify participation in DeFi by making advanced strategies more accessible to users. By leveraging blockchain protocols and automated strategies, it helps users optimize how their digital assets are utilized.

Responsibilities:
  • Developed Solidity smart contracts to automate liquidity positions across EVM-based protocols, including Uniswap V3/V4, Aerodrome, and PancakeSwap.
  • Implemented automated liquidity position management for decentralized finance protocols across EVM-compatible networks.
  • Developed Rust smart contracts to automate liquidity positions on Solana, integrating with Raydium and Orca.
  • Implemented blockchain-specific logic to support liquidity position automation across EVM and Solana ecosystems.
Project Tech stack:
Solidity
Rust
Smart contracts
Founder
Mar 2026 - May 20262 months
Project Overview

A mobile application that helps users share their travel plans and discover when friends or other people they know are passing through the same locations. It allows users to coordinate trips and stay informed about each other's travel plans. The app makes it easier to identify opportunities to meet while traveling or visiting the same destinations. By improving visibility into travel plans, it helps users stay connected and avoid missing opportunities to meet in person.

Project gallery:
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Portfolio example for Croisée by Thomas, Founder
Responsibilities:
  • Managed the entire app lifecycle, including product requirements, product design, project planning, development, testing, and store deployment.
  • Developed a hybrid mobile application for iOS and Android using Expo.
  • Implemented the application’s core functionality to support the product’s intended user experience.
  • Integrated RevenueCat to handle in-app payments.
  • Tested the application to verify functionality and prepare it for release.
  • Managed the deployment process for publishing the application to mobile app stores.
Project Tech stack:
Expo
AI agent development
Serverless Computing
PostgreSQL
e2e testing
iOS
Android
Full-stack Developer
Jul 2024 - Dec 20245 months
Project Overview

A Telegram Mini App featuring a real-time multiplayer game inspired by the Codenames board game concept. The platform allows players to participate in interactive word-based challenges directly within Telegram. It combines social interaction with competitive gameplay, enabling users to play together in real time. The game provides an accessible multiplayer experience without requiring users to leave the Telegram environment.

Project gallery:
Portfolio example for Revolt Games by Thomas, Full-stack Developer - Web3 / Blockchain / Gaming
Portfolio example for Revolt Games by Thomas, Full-stack Developer - Web3 / Blockchain / Gaming
Portfolio example for Revolt Games by Thomas, Full-stack Developer - Web3 / Blockchain / Gaming
Portfolio example for Revolt Games by Thomas, Full-stack Developer - Web3 / Blockchain / Gaming
Portfolio example for Revolt Games by Thomas, Full-stack Developer - Web3 / Blockchain / Gaming
Responsibilities:
  • Built a real-time multiplayer Telegram Mini App from scratch.
  • Included wallet flows and on-chain rewards.
  • Created and deployed SpyCoin, a fungible token used for in-game rewards to the Hedera Mainnet blockchain.
  • Integrated Web3 wallet onboarding and on-chain reward distribution.
Project Tech stack:
Node.js
React
Supabase
Google App Engine
Blockchain

Education

2013
Computer Systems Networking and Telecommunications
Master’s Degree
2014
Computer Science and Telecommunications
Master’s Degree

Languages

French
Advanced
Spanish
Advanced
English
Advanced

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