Looking for a job

Daniel Oliveira

@danieloliveiratr

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I build reliable Java backends and production mobile products.

Brazil

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What I'm looking for

I'm looking for remote contract work where I can build reliable backend systems, solve data and reporting problems, and contribute to production products with a strong focus on correctness.

At Fazenda São Francisco, I build and maintain Java systems used daily by 150+ office and field staff across HR, accounting, finance, purchasing, and field monitoring. As one of three developers supporting every internal system, I own financial and operational reporting, trace calculation errors through SQL, business rules, and source data, and improve REST APIs so failures surface with context.

I've also shipped mobile products to the App Store and Google Play, including Pai de Pet, and built a salon booking platform end to end with JWT authentication, RBAC, and scheduling rules. My work spans Java, Spring Boot, PostgreSQL, React Native, and production integrations such as WhatsApp, Instagram, and Facebook Messenger.

Experience

Work history, roles, and key accomplishments

Backend Developer

Fazenda São Francisco

Dec 2023 - Aug 2026 (2 years 8 months)

One of 3 developers supporting every internal system in the company. Built and maintained in-house systems in Java (Spring Boot, Grails) for HR, accounting, finance, purchasing and field monitoring, used daily by 150+ office and field staff.