Looking for a job

Rafael Lima Dias

@rafaellimadias

Message

I build auditable full-stack applications that replace manual workflows with secure, measurable operations.

Brazil

Message

What I'm looking for

I'm looking to build full-stack products that solve operational problems, with ownership from discovery through production and measurable improvements in efficiency, adoption, and governance.

At Teletex IT Solutions, I build end-to-end corporate products that replace spreadsheets and email workflows with secure, auditable applications. I delivered Approval Hub in React, TypeScript, Node.js, Express, and PostgreSQL for 130 users managing 764 entries and more than 11,400 operational hours.

I also digitized inspections for Comgás across three units, processing 1,188 checklists and 962 photo evidences, and built a Webex API dashboard to monitor 24 environments and 70 videoconferencing devices. I take products from discovery and business-rule modeling through architecture, implementation, training, go-live, and post-production evolution.

Alongside my professional work, I develop a teaching query-execution engine in C for UFPR's NERD/BD extension project, with CSV loading, relational operators, automated tests, benchmarks, joins, aggregations, and memory-performance analysis.

Experience

Work history, roles, and key accomplishments

Current

Desenvolvedor – Grupo de Materialização

Current

NERD/BD – Projeto de Extensão em Banco de Dados

Apr 2026 - Present (6 months)

Developed a didactic query execution engine in C with dynamic tabular structures, CSV loading, and pipelined operators. Evolving the engine with explicit memory management, aggregations, and join strategies.

C SQL CSV Nested Loop Join Hash Join Group By Memory Management Testing Benchmarks

Current

Desenvolvedor Full Stack

Current

Teletex IT Solutions

Nov 2024 - Present (1 year 11 months)

Developed and deployed the Approval Hub end-to-end, replacing spreadsheets and emails with an auditable application used by 130 users. Created the Checklist Comgás platform and a Webex-integrated dashboard, while resolving incidents and structuring CI/CD flows.

React TypeScript NodeJS Express PostgreSQL SSO Microsoft Entra ID GitHub Actions CI CD Webex Docker Cloudflare R2

Assistente Administrativo

Contabilizei

Oct 2023 - Sep 2024 (11 months)

Analyzed and conducted company opening processes, validating documentation and regulatory requirements while coordinating demands between clients and public agencies.