Javier Fraile Pérez de Arilucea

Blockchain | Smart contract Engineer at myNFT
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Contact Information
us****@****om
(386) 825-5501
Location
Madrid, Community of Madrid, Spain, ES
Languages
  • English Full professional proficiency
  • Chinese Elementary proficiency
  • Spanish Native or bilingual proficiency

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Experience

    • United Kingdom
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Blockchain | Smart contract Engineer
      • Dec 2021 - Present

      Design and develop GBM to be an out of the box system that allows users without technical knowledge to integrate it in their project and collaboration in the backend and contracts of MyNFT marketplace: • Develop smart contracts in Solidity, starting from a greenfield using standards and implementing best practices for contract design, testing, and deployment. • Built backend infrastructure and RESTFul APIs, integration with Kafka, PostgreSQL and blockchain networks using Rust Tokio and NodeJS. • Design and develop Rust smart contracts starting from a greenfield for Substrate (ink!) and Casper network. • Review and audit colleges code to ensure code quality, good practices and that is well-documented and maintainable. • Collaborate with other engineers and designers to define requirements and build features that leverage smart contracts. • Use of Docker to containerize the backend and it services, Kafka and PostgreSQL. Show less

    • United Kingdom
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Blockchain | Smart contract Engineer
      • Nov 2019 - Dec 2021

      As a blockchain engineer I worked on the design and development of solutions for liquidity management and international payments for decentralised financial networks: • Design and development of smart contracts in Solidity applying upgradability patterns. • Development of Solidity inline assembly snippets. • Use of Truffle, Hardhat, Web3, Geth and Infura to test, debug and deploy contracts. • Use of Solidity related tools to ensure code quality: Solidity-coverage, Sonar, Solhint, Ethlint, MythX and Mythril. • Backend development using Go. • Continuous integration with CircleCi creating pipelines and workflows to execute test and coverage. Show less

    • Spain
    • IT Services and IT Consulting
    • 400 - 500 Employee
    • Software | Blockchain Developer and Consultant
      • Sep 2016 - Oct 2019

      As a blockchain developer and consultant I worked on projects for different applications such as financial products, IoT and smart cities. The projects include: •Development of APIs, microservices and backeds with Python and Go. • Development of smart contracts in Solidity. • Development of Chaincode in Go for Hyperledger Fabric. • System architecture design. • Creation of Ethereum and Quorum test networks with raft and IBFT consensus. • IPFS integration • Use of state channels. • Use of web3, Truffle, Infura, Geth, Openlaw, MythX. • Data visualization using Power BI and Kibana. • RabbitMQ install, configuration and use. • Direct communication with clients, requirements gathering, etc. • Docker containers creation for the different micro-services. Show less

Education

  • Universidad de La Rioja
    Grado, Ingeniería Electrónica Industrial y Automática
    2013 - 2018

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