Paul-Alexandre Tessier

Blockchain Developer

Salaire / Taux journalier

Nantes, France

Freelance, ouvert au CDI

Peut venir sur site

Expertises

SolidityJavaBlockchainTypescriptRustScalaReactDéveloppement BackendWeb3

Langues

Français (Maternelle)Anglais (Courant)

À propos

Introduction

https://github.com/Paulalex85

Liens

Expérience de travail

RA2 TECH SAFreelance

janv. 2022 - déc. 2025

4 ans

Blockchain Team Lead

avr. 2023 - déc. 2025

2 ans 9 mois

- Led and managed a team of up to 6 blockchain developers, delivering multiple projects: https://github.com/SmarDex-Ecosystem/usdn-contracts, https://github.com/SmarDex-Ecosystem/spro-contracts - Drafted and conducted technical interviews to recruit blockchain developers. - Facilitated the integration of new developers into the team. - Translated functional requirements into technical tasks. Used Notion and then Linear to facilitate organization. - Managed priorities to ensure delivery and meet project deadlines. Used agile development concepts. - Conducted annual reviews to assess employee achievements, set objectives, and discuss development opportunities. - Created smart contracts with solidity and Foundry - Created scripts with Typescript and Rust - Conducted R&D analysis to identify and solve problems during the early stages of projects - Helped with the technical architecture of smart contracts - Provided technical code reviews to enforce coding standards and best practices. - Developed invariant models using Echidna and Medusa. - Prepared audit documentation for multiple security audits and managed issues for resolution rounds. - Assisted with the deployment of live projects. - Prepared multisig transactions to be executed via Gnosis Safe. - Created invariant-based alerts for live monitoring. - Designed graphs and dashboards in Grafana to monitor live project metrics.

Blockchain Developer

janv. 2022 - mai 2023

1 an 5 mois

- Developed smart contracts for a decentralized AMM (Smardex.io https://github.com/SmarDex-Ecosystem/dex-smart-contracts) across multiple chains using Solidity - Created farming and staking contracts to incentivize user participation - Built unit and integration tests using Hardhat and ethers.js - Designed and implemented an invariant testing model with Echidna - Developed scripts and tools using Typescript

Blockchain Developer

sept. 2018 - janv. 2022

3 ans 5 mois

Creation of Dapps Smart contracts with Solidity on Ethereum, C++ on EOS Development environment with Hardhat, Truffle, Waffle Front end with Web3, Ethers.js, React.js Example : https://github.com/Paulalex85/BlockDelivery

Software Engineer

Horizon Software

sept. 2019 - oct. 2021

2 ans 2 mois

Nantes, France

Java, Scala, SQL, Swing, Bash, Git, Jenkins Electronic trading specifications : Accumulator/Decumulator orders, options, warrants, FIX.

Software Engineer

Sopra Steria

avr. 2018 - oct. 2019

1 an 7 mois

Région de Nantes, France

Java, JSP, PostgreSQL, Bash


Formation

Nantes Université

Master's degree, MIAGE

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