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Jesus Mansilla CastellsJM

Jesus Mansilla Castells

Custom VBA application development

€400/day
Madrid, ES
15+ years
VBA
SQL
access
Microsoft Office
MySQL

Average response time: 1 hour

Freelancer profile translated to English.
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About Jesus

Development of any type of business project, economic management, personal, accounting, taxes, budgets, manufacturing, time forecasting.
If they explain to me how it works, I will make the system do it for the company.
I have developed Verifactu, SILICIE, SII solutions, ... data communication with AEAT.

  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Madrid (up to 50km)

Experience

  • TECSYS PROYECTOS INFORMATICOS, S.L.
    Freelance professional
    SOFTWARE PUBLISHING
    April 1995 - Today (31 years and 4 months)
    Madrid, Spain
    Design, development, implementation of desktop applications in all types of companies: banks, supermarkets, construction, transport, manufacturing, accounting firms.

    Development of CRM, ERP, accounting management, budgets, production planning, Verifactu / Silicie data communication with AEAT, links with SAP applications.

    Developed in VB, VBA, TwinBasic on Access, SQL Server, MySQL databases.

    Forward Deployed Engineer, GenAI, FDE, API Integration, Backend Development.
    VBA SQL access Microsoft Office MySQL
  • VOLKSWAGEN CREDIT (FISEAT).
    Systems technician, analyst, programming
    September 1987 - April 1995 (7 years and 7 months)
    Design and maintenance of the company's management applications using COBOL and RPG on IBM AS400, BULL DPS-6, DPS-7 equipment.
    Systems technician, communications network management, equipment optimization.
  • COMERCIAL CEDORA,
    Systems technician, analyst and programming
    July 1986 - July 1987 (1 year)
    Design and maintenance of the company's management applications using COBOL on BULL DPS-6 equipment.
    Systems technician, communications network management, equipment optimization.

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Education

  • equipment, systems technician, communications
    E.T.S.
    equipos, técnica sistemas, comunicaciones

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