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Luís Guilherme Silveira de Oliveira

Available to hire

I help businesses turn messy data and administrative tasks into clear, practical deliverables. My services include Excel spreadsheet organization, data cleaning, data entry, web research and structured reports.

About

I help businesses turn messy data and administrative tasks into clear, practical deliverables. My services include Excel spreadsheet organization, data cleaning, data entry, web research and structured reports.

I have used Excel since 2022 and work as an administrative manager at Naves Odontologia, handling finance, purchasing, supplier negotiations, HR and management spreadsheets. I graduated in Economics from Insper in 2026. I also use Canva, ClickUp and Trello, and have experience with Meta Ads and social media.

My workflow uses AI tools to support research, organization and production, with the scope and deliverables agreed before starting. Portuguese is my native language, and my English level is C1.

  • 2 years' experience
  • Joined October 2026

Languages

  • PortugueseFluent
  • EnglishAdvanced

Industry experience

  • Healthcare
  • Professional Services
  • Retail
  • Education
  • Financial Services

More experts

Work experience

Administrative Manager · Naves OdontologiaOct 2024 – Present · 2 yrs 2 mos

Manage administrative operations, including HR routines, finance, purchasing, supplier negotiations and internal systems. Organize management spreadsheets and support reporting, business planning and process improvements.

Education

Bachelor’s Degree in Economics · Insper - Instituto de Ensino e Pesquisa2022 – 2026

Completed in September 2026. Studies began in August 2022.

Bacharelado em Administração de Empresas (Programa de intercâmbio) · Frankfurt School of Finance & Management2025

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