Looking for a job

Heron Carlos

@heroncarlos

Software Engineer at Óbvia Contabilidade and co-founder of FrotaOne, automating CNPJ registration and building a vehicle-rental SaaS.

Brazil

Message

At Óbvia Contabilidade, I develop backend services and REST APIs and automate accounting workflows. I designed and implemented an end-to-end CNPJ registration process that replaced a manual workflow involving multiple people.

At FrotaOne, I develop a SaaS platform for vehicle rental businesses, including payment and billing workflows with Asaas. I also contribute to AI-powered vehicle inspection features integrated with WhatsApp.

Experience

Work history, roles, and key accomplishments

Current

Co-founder & Software Engineer

Current

FrotaOne

Oct 2025 - Present (1 year 1 month)

Develop a SaaS platform for vehicle rental businesses using Node.js, NestJS, TypeScript, React, and Next.js. Implement payment integration with Asaas and contribute to AI-powered vehicle inspection features.

NodeJS NestJS TypeScript React Next.js PostgreSQL Prisma REST APIs Payment Integration AI

Current

Software Engineer

Current

Óbvia Contabilidade

Jun 2025 - Present (1 year 5 months)

Develop and maintain backend services and REST APIs using Node.js, TypeScript, and AWS. Designed and implemented automation for the end-to-end company registration process (CNPJ), replacing a manual workflow.

NodeJS TypeScript AWS Lambda API Gateway Amazon SQS S3 RDS REST APIs Automation Code Review Mentorship

Software Developer Intern

Pris Software / Banco BTG Pactual

Apr 2024 - Mar 2025 (11 months)

Developed backend features and REST APIs using C# and .NET. Contributed to frontend development using Angular and TypeScript, and supported code quality through unit testing and documentation.

C#.NET Entity Framework SQL Server Angular TypeScript CQRS Unit Testing Swagger Scrum Azure DevOps

Technology Intern

EGSC

Aug 2022 - Mar 2023 (7 months)

Developed frontend features using React and TypeScript. Supported backend development using C# and .NET, and assisted with technical support and Windows Server-related activities.

React TypeScript C#.NET Technical Support Windows Server