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David BoletDB

David Bolet

Java - Golang - Blockchain - Solidity Architect

€480/day
1 project
Barcelona, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About David

Backend Developer specializing in Java and Golang, with full-stack and mobile development knowledge. With over 10 years of experience, I have worked on multiple projects using the most popular technologies (Spring, J2EE, Hibernate, JPA, JMS, Rest...) in various sectors (experience with clients like SAP, Deutsche Telekom, Seat, Readisson Hotels, Hospital Sant Joan de Deu, El Periódico, etc...). Relational databases (Oracle, Postgres, Mysql, Sql-Server) and non-relational databases (Cassandra, MongoDB, redis, Elasticsearch). I have also worked with specific tools, such as the Alfresco document manager, SAP SCP platforms (NEO, Kyma, and Cloudfoundry), or the LifeRay CMS (6.0 and 6.1). My primary experience is in backend application development. I also have training in Big Data, and in Blockchain (developed smart contracts in Solidity - Ethereum platform -, including the CatCoin token, and collaborated in the creation of a contract for generating lotteries and another for automated token trading). With blockchain, I have also developed the Java library JPascalCoin for the PascalCoin currency, as well as the app for managing said cryptocurrency.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Russian

    Fluent

  • French

    Basic

  • Romanian

    Basic

Remote only
Primarily works remotely

Experience

  • SAP
    Senior Java Engineer
    DIGITAL AND IT
    August 2022 - Today (3 years and 10 months)
    Currently working for SAP, on the Enable Now product, which is developed on Java 11. I'm collaborating in the migration to the Kyma environment on SAP SCP (SAP Cloud Platform)
  • Holm Security
    Senior Golang Developer - Cybersecurity
    TECH
    February 2022 - August 2022 (7 months)
    Estocolmo, Sweden
    Senior Golang developer, development and maintenance of microservices and desktop applications for Windows and Linux
    Golang GO Docker PostgreSQL MariaDB
  • KPS Spain
    Senior Java Engineer
    TECH
    December 2020 - January 2022 (1 year and 2 months)
    Barcelona, Spain
    Billing project for Echevarne laboratories, developed in Java on the SAP BTP (NEO) platform
    Java Spring Spring boot Spring Security HANA JPA

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Education

  • Engineer in Computer Science
    Universitat Politècnica de Catalunya
    2000
  • RUSSIAN Level B1
    Escola Oficial Idiomes
    2011

Certifications

Skill set (58)

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