Skip to main content


My name is Joel. I'm a software engineer since 2013 (7+ years of professional experience) currenty based in Lyon, France.

I am a curious person with strong interest in data, music technology, distributed systems and blockchain applications (DeFi, NFT, Smart Contracts).

I have worked with a multitude of languages, frameworks, databases and cloud providers. I'm most confortable with Python and Javascript.

Lately, I have been focusing on writing Smart Contracts with Solidity, testing with Waffle/Chai and the Ethers.js/Web3.js libraries.

I enjoy writing clean code. I also have some experience managing software teams using Agile practices (scrum).

I believe that acquiring knowledge, gaining understanding and learning new skills are joyous, empowering events.


Smart Contracts & Web3
  • Solidity, Open Zeppelin
  • Truffle, HardHat
  • Ethers.js, Web3.js
  • Testing : Chai, Waffle
  • Security : Slither, Echidna (ethsecuritytoolbox)
Backend & Data Analysis
  • Python Flask, Jupyter, Numpy, Pandas, Packages
  • Node.JS, Express, Insomnia (API development), middlewares
  • Kibana, NiFi, SAP Business Objects, Power BI
  • JAVA EE, Apache Tomcat, Spring Framework
Storage / DataBases
  • SQL
  • PostgreSQL
  • MongoDB
  • ElasticSearch
  • Apache Hadoop Ecosystem
CI / DevOps
  • Docker
  • Heroku, AWS
  • Selenium, Webdriver
  • Jenkins
  • Javascript, TypeScript, Web Components
  • Twitter Bootstrap
  • CSS / SCSS
  • HTML
  • Tapestry
  • Docusaurus (used for this website)
  • Git, Github
  • Atlassian JIRA, Confluence
Project Management
  • Agile project management (in particular scrum)
  • Application Lifecycle Management
  • Blockchain developer, The Blockchain Council, 2021
  • PRINCE2 Project Management, 2019
  • ITIL Service Operations Intermediate, 2017, 2018
  • English
  • Spanish
  • French
  • Portuguese


Drop me a line at [joelpow7 (at)]

Last updated 14 June 2021