Eduardo Oliveira de Souza

A tool that turns web pages into clean Markdown: paste a URL and get content ready to read, archive, or feed to AI models.

• markdown
• web
• tooling

Site

AI-powered voice interview rehearsal for engineers whose first language isn't English. Practice out loud against your real CV and a job posting, with interviewer personas and feedback pinned to specific moments in the session.

• AI
• voice
• interview-prep

Site

A product catalog in a single link, for people who sell over WhatsApp. Sellers add photo, price, and description; buyers pick what they want and the order arrives as a ready-to-send message — no sign-up, no re-sending photos and prices in every conversation.

• catalog
• WhatsApp
• small business

Site

A command-line issuer of NFS-e, Brazil's electronic service invoice, for small businesses under the Simples Nacional regime: sets itself up from the A1 certificate, issues, queries and cancels invoices, and renders the DANFSe PDF. In progress: it already runs in the government's restricted production environment; issuing invoices with fiscal value is next.

• Go
• CLI
• invoicing
• open source

GitHub · Docs (Portuguese)

A Rust CLI for business accounts at Brazil's Banco Inter, built on the bank's official APIs: balance and statements in the terminal, as JSON, CSV or PDF. In progress: Pix, payments and boletos come next. Unofficial project, not affiliated with Banco Inter.

• Rust
• CLI
• banking API
• open source

GitHub