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Dhonatan Campagnaro

@dhonatancampagnaro

Message

React & Ruby on Rails developer building scalable SaaS platforms, APIs, and modern web applications.

Brazil

Message

What I'm looking for

I’m looking to build React.js + Rails applications—creating performant frontends and robust backend systems. I want to partner on scalable product architecture, background processing, and reliable deployments that turn ideas into dependable platforms.

I’m a full-stack React & Ruby on Rails developer with strong expertise in building scalable SaaS platforms, APIs, and modern web applications. I’ve worked across the entire product lifecycle—from architecture and development to database design, background processing, infrastructure, and deployment.

In my recent role, I’ve been the lead developer responsible for building and scaling a platform from scratch to production. I deliver across the stack, including performant frontends, robust backend systems, PostgreSQL database architecture, and background processing with Sidekiq.

I enjoy solving complex problems and transforming ideas into reliable, scalable products. I’ve delivered hundreds of projects for startups, agencies, and international clients, bringing both technical depth and technical leadership to development decisions and architecture.

Experience

Work history, roles, and key accomplishments

Current

Lead React & Rails Developer

Current

VipLink

May 2020 - Present (5 years 11 months)

Led development and scaling of a platform from scratch to production, covering frontend, backend, database architecture, and infrastructure. Built a Ruby on Rails backend and a React/TypeScript (web + React Native) frontend, integrating external APIs and implementing background processing.

Ruby on Rails React TypeScript React Native Redux Sidekiq PostgreSQL

React & Rails Developer

Upwork

Jan 2020 - Jan 2021 (1 year)

Delivered SaaS platforms, web applications, and APIs for international clients, working across the full product stack. Built solutions using React.js with Ruby on Rails, PostgreSQL/MySQL, Redux, and JavaScript/TypeScript, including mobile and e-commerce projects.

React Ruby on Rails PostgreSQL MySQL JavaScript TypeScript Redux React Native Mobile Web Development

Project Manager & Full-Stack Developer

TwoWeb Digital

Feb 2015 - Dec 2019 (4 years 10 months)

Owned project management, architecture, and development for hundreds of digital projects. Delivered applications using Ruby on Rails, React.js, and React Native, including e-commerce platforms and custom systems.

Ruby on Rails React React Native Application Architecture E commerce Development Project Management Database Design API Development Frontend Development

QA Tester / Quality Control

SGI Sistemas de Informatização

Apr 2014 - Feb 2015 (10 months)

Performed software testing and quality validation, including functional testing and UX/UI validation. Validated SQL database behavior to ensure application correctness and stability.

Functional Testing SQL QA Testing Test Execution Bug Reporting Quality Control Validation

IT Specialist

CSP Automação Comerical

Apr 2013 - Apr 2014 (1 year)

Provided technical support and maintained commercial automation systems. Supported system operations and troubleshooting for business-critical applications.

Technical Support Troubleshooting IT Support Systems Administration