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Charles W.CW

Charles W.

Fact-checking with Excel Macros and APIs

€350/day
1 project
Barcelona, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Charles

Do you need an expert in macros and VBA or forms?
Did you know you can do VERIFACTU or SII with Excel?

Do you need to integrate and automate several tools?

With my help, you can create macros with VBA to automate repetitive tasks.

How can I help you in Excel?

-We import data from your database into Excel
-We transform the data using formulas, tables, or code
-We send the data to the AEAT using code from Excel
-We store and process the response

I am an e-invoicing consultant and I am familiar with Spanish laws. I have also integrated software with the AEAT. Specifically, Verifactu, SII, e-invoicing, UBL, FacturaE, EDI, Tiquet Bai.

What else can I do with Excel?

Almost anything, but for example:
-Import the bank statement from the bank into a folder (you will have to do this because I don't have access to your bank :))
-Save the data in a database (we will use a table)
-Using Excel and code (macros), enter the statement data into accounting with an easy and customizable interface that saves you time by matching bank data.
-I may need to contact the technical service of your accounting program to ensure we don't break anything, but if you don't have maintenance, we can study it.

Don't you want it in Excel?
I can program with HTML, CSS, JS, PHP, Python.

Do you have Excels that import data but still need things added manually?
I can add tables to the database so that the information flows better.

I am an expert in macros, Excel, VBA, forms, API, HTTPS, APIs, GET, POST, XML, JSON.
I also program websites: HTML, CSS, PHP, Python.
And an expert in VAT laws, IRPF, tax forms, tax automation, CCAA, electronic invoicing and Verifactu, SII, Tiquet Bai, accounting, data analyst, SQL expert, and proactive with taxation.

Would you like your Excel data to be safe on your server and for different users to have the same information in real-time from different computers?
With APIs, macros, and Excel, it's easy.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • French

    Native or bilingual

  • Catalan

    Native or bilingual

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

Experience

  • GESISA
    Electronic Invoicing Consultant
    April 2024 - Today (2 years and 2 months)
    Barcelona, Spain
    Provide advice on VAT and SII and Verifactu electronic invoicing laws.
    Help clients connect to APIs.
    Ensure the SaaS is ready, perform tests, and propose improvements.
    Technical support.
    Verifactu
  • L.T.C. Española S.A.
    Data-Analyst Accounting & IT
    January 2021 - August 2023 (2 years and 7 months)
    Barcelona, Spain
    Data analyst with SQL, accountant, filing taxes and annual accounts.
    Perform automations to integrate with suppliers and clients using macros, FTPS, and CSV.
  • Grupo Belleza 1987 SLU
    Accounting & Data Analyst
    September 2023 - March 2024 (6 months)
    Cornellà de Llobregat, CT, Spain
    Data analyst with SQL, accountant, closing accounts.
    Automate monthly invoicing reports.
    Integrate with the accounting firm to send them data in the required format.
    Perform stock statistics.

Reviews

5.0

Out of 1 rating

CelinaC

Celina

Elaboracion de Excel para Menus - Marcelo Guillermo Naistat Poverene

Reviewed on 2/2/2026

Charles was very attentive and assisted us with our questions.

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Education

  • Master's degree, Fermented Beverages sp Oenology (Tarragona)
    Universitat Rovira i Virgili
    2019
    Master's degree, Fermented Beverages sp Oenology (Tarragona)
  • Master of Science
    Université de Montpellier
    2017
    Master's degree, Didactics of Science

Skill set

Categories