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David Bolet

arquitecto java - golang - blockchain - solidity

Works remotely from Barcelona

  • 41.38506389999999
  • 2.1734034999999494
  • Suggested rate €420 / day
  • Experience 7+ years
  • Response rate 71%
  • Response time A few days
Propose a project The project will begin once you accept David's quote.

This freelancer is available full-time but hasn't confirmed their availability in over 7 days.

Propose a project The project will begin once you accept David's quote.

Location and workplace preferences

Location
Barcelona, España
Remote only
Primarily works remotely

Preferences

Project length
≥ 6 months

Verifications

Freelancer code of conduct signed
Read the Malt code of conduct

Verified email

Reputation

Languages

  • Spanish

    Native or bilingual

  • English

    Fluent

  • Russian

    Fluent

  • French

    Basic

  • Romanian

    Basic

Categories

Skills (45)

David in a few words

Desarrollador Back end especialista en Java y Golang, aunque con conocimientos full-stack y desarrollo movil. Con mas de 10 años, he trabajando en múltiples proyectos con las tecnologías más populares (Spring, J2EE, Hibernate, JPA, JMS, Rest...) en proyectos en multiples sectores (experiencia con clientes como Deutche telekom, Seat, Readisson Hotels,Hospital Sant Joan de Deu, El Periódico, etc...) . Bases de datos relacionales (Oracle, Postgres, Mysql, Sql-Server) y no-relacionales (Cassandra, MongoDB, redis, Elasticsearch). También he trabajado con herramientas específicas, como el gestor documental Alfresco, plataformas Sap SCP (NEO y Cloudfoundry), o el CMS LifeRay (6.0 y 6.1). Mi experiencia principal en desarrollo de aplicaciones backend. También tengo formación en Big-Data, y en Blockchain (desarrollado contratos inteligentes en Solidity -plataforma Ethereum-, incluyendo el token CatCoin, y he colaborado en la creación de un contrato para la generación de loterías y otro para la compra-venta automatizada de tokens). Con blockchain también he desarrollado la librería java JPascalCoin para la moneda PascalCoin, así como la APP para la gestión de dicha criptomoneda.

Portfolio

Experience

Holm Security

Tech

Senior Golang developer - cybersecurity  - As a freelancer

Estocolmo, ST, Suecia

February 2022 - Today (10 months)

Desarrollador senior Golang, desarrollo y mantenimiento de microservicios y aplicaciones de escritorio para Windows y Linux

KPS Spain

Tech

Senior Java engineer  - As a freelancer

Barcelona, CT, España

December 2020 - January 2022 (1 year and 1 month)

Proyecto de Facturación para laboratorios Echevarne, desarrollado en Java sobre la plataforma SAP BTP (NEO)

Reply - Go Reply GmbH

Telecommunications

API/Cloud expert (Java, Go, Kubernetes, Javascript...)  - As a freelancer

Düsseldorf y alrededores, Alemania - Remote from Barcelona

June 2019 - September 2020 (1 year and 3 months)

Worked for Deutche Telekom in a very innovative project using cutting edge technologies (Kubernetes - Kafka - Java - Go - MongoDB )

Techedge España - Techedge Group

Consulting & Audits

Java expert  - As a freelancer

Barcelona y alrededores, España

November 2018 - May 2019 (6 months)

Developed application for Seat about new idea's workflow: proposal-approval-implementation -reward. Application developed on Spring boot using SAP Cloud's platform, with a SAPUI frontend, Sap Hana Database and SAP integration for managing payments.

EY

Senior Java Backend Engineer (contractor)  - As a freelancer

Barcelona y alrededores, España

August 2018 - November 2018 (3 months)

BeRepublic - BeRepublic

Senior Java Software Engineer  - As a freelancer

Barcelona Area, Spain

September 2016 - August 2018 (1 year and 11 months)

Working for BeRepublic and his client Kapelse (an startup from PharmaGest France), in order to improve/update previously developed projects (TMS & TMAJ), and develop a new one (SDS). Technologies: JPA (Hibernate), Spring framework: Security, MVC (Tiles), ActiveMQ, Maven, Jenkins, Git, SOAP (Apache CXF, Jax-ws), JAX-B, log4J, JUnit. Also collaborated with other clients like SEAT (developed Backend for the APP droppit)

everis

Consulting & Audits

Java Architect  - As a freelancer

Barcelona

January 2015 - September 2016 (1 year and 8 months)

Worked for everis Barcelona, collaborating with Document Management team, and Architecture team, worked in several projects, with Java, (Spring, JSF, maven, hibernate), Alfresco document management system and SAP integration (MM module)

Necsia IT Consulting

Senior Java Software Engineer  - As a freelancer

January 2015 - February 2015 (1 month)

Worked as a senior Java developer in Necsia, in a project for Aguas de Barcelona (currently Suez). Technologies: J2EE (Tomcat), JPA (Hibernate), Spring, JSF2 (PrimeFaces), Maven, Git, log4J, JUnit

BeRepublic - BeRepublic

Senior Java Developer  - As a freelancer

December 2013 - January 2015 (1 year and 1 month)

worked as a senior Java developer in BeRepublic. Technologies: J2EE (Tomcat), JPA (Hibernate), Spring framework: Security, MVC (Tiles), ActiveMQ, Maven, Jenkins, SVN, SOAP (Apache CXF, Jax-ws), JAX-B, log4J, JUnit

FHIOS Smart Knowledge - FHIOS Consultoría Tecnológica

Consultor freelance, Liferay y Java  - As a freelancer

August 2013 - December 2013 (4 months)

Working as a freelance, developing projects in Liferay and J2EE for FHIOS. Clients: MediaPro, Kapelse, La Caixa

i2CAT Foundation

J2EE Consultant  - As a freelancer

October 2011 - August 2013 (1 year and 10 months)

Developing Java J2EE solutions in Heath & Care area. Technologies: J2EE (Tomcat), Apache, MySLQ, Android, Spring, BlazeDS, JPA(Hibernate), RESTFul services

Kasas.ru

Property Development Manager

Barcelona Area, Spain

January 2011 - August 2013 (2 years and 7 months)

International real-estate: Costumer relationship or russian clients interested in Spanish property market.

Transports Metropolitans de Barcelona (TMB)

Java analyst  - As a freelancer

January 2011 - January 2011

Working as a freelancer, migration and modernization of programs developed in JDK 1.2 with Informix to Oracle WAS

Grupo Zeta

IT Engineer online content developer

September 2005 - October 2010 (5 years and 1 month)

Analyse and develop web projects for the sites www.elperiodico.com, www.sport.es and some others. Developed all video-publishing system and statistics

The Queen Vic S.L.

General Manager

Barcelona, Catalonia, Spain

March 2004 - May 2006 (2 years and 2 months)

Founder & CEO of the English Pub

GEC (grupo UOC )

IT - Developer - Analyst

September 2003 - July 2005 (1 year and 10 months)

E-learning's Virtual Campus integration for different clients Developing Java solutions (Hibernate, Struts...) Oracle databases developing & administration PHP & Mysql solutions

IECISA

JAVA Analyst-Programmer

August 2002 - September 2003 (1 year and 1 month)

Analyst and Developer in Java language. Developed 2 applications for la Generalitat de Catalunya

Viasalus

Programming Analyst

Barcelona, Spain

December 2000 - March 2002 (1 year and 3 months)

Starting as a programmer, after a few months I was promoted to Analist-programmer in JAVA; developing web-applications for the portal www.viasalus.com. Worked with java and python, using Interwoven Teamside as CMS and Weblogic Commerce Server as application container. Worked with a team from PwC

Aula Creativa S.L

Junior Developer

September 2000 - December 2000 (3 months)

Develop an application for managing the business

Clifford Chance

IT support

September 1999 - August 2000 (11 months)

Soporte informatico, compra de material, matenimiento de redes y equipos, formación de nuevos usuarios

Education

Certifications