João
Marins
Full-Stack Engineer, Entrepreneur, Angel Investor and Open Source Maintainer
Software Engineer
A US-based clean energy company that designs and installs residential solar and battery systems, making home energy more affordable and sustainable.
Technical Leader
A Brazilian fintech platform that enables businesses to accept instant payments through Pix, automating invoices, subscriptions, and checkout experiences for merchants of all sizes.
Co-Founder & CTO
A Brazilian insurtech focused on simplifying property insurance through technology, offering fast, transparent, and fully digital coverage for homes and rentals.
Software Engineer
A US-based health-tech company that enables decentralized clinical trials through a virtual-first platform connecting patients, physicians, and sponsors to accelerate medical research.
Technical Leader
A Brazilian beauty-tech company that develops skincare products co-created with its community, combining dermatological science, sustainability, and digital innovation.
Founder & CTO
A Brazilian product analytics and data pipeline platform that captures user events via SDKs and routes them to warehouses and dashboards for real-time insights.
Founder & CTO
A Brazilian events platform that lets communities create, discover, and manage meetups—handling event pages, RSVPs, scheduling, and attendee engagement.
Full Stack Engineer
A Brazilian HR-tech platform that helps companies foster a culture of continuous feedback, performance reviews, and employee engagement through data-driven insights.
Full Stack Engineer & Technical Leader
A Brazilian software consultancy that builds and scales web applications using modern technologies, where I later led technical teams and architectural decisions for client projects.
Bachelor's degree, Computer Science
Bachelor's degree, Physics
Beyond the Basics: Leveraging MongoDB for Fintech Disruption
2024Exploring MongoDB database solutions and best practices for financial technology applications.
Relay Local State Management: Replacing Redux
2019How to use Relay for local state management as an alternative to Redux in React applications.
Serverless Deployment of React Apps on AWS
2019Guide to deploying React applications on AWS using serverless architecture and best practices.
The Golden Stack
2019React Conf Brazil 2019 presentation on building modern web applications using React, Relay, and GraphQL.
How to improve CI/CD for any Node.js application?
2019A comprehensive guide on improving continuous integration and deployment processes for Node.js applications.
React Hooks
2019Deep dive into React Hooks, exploring how to use them effectively in modern React applications.
CI/CD for React Native
2018Implementing continuous integration and continuous deployment pipelines for React Native mobile applications.
RTL Everywhere
2018React Testing Library best practices for testing React applications and improving test reliability.
GraphQL Security
2018Best practices and strategies for securing GraphQL APIs and preventing common security vulnerabilities.
Building a Cryptocurrency App with React Native
2018Learn how to build a cryptocurrency mobile application using React Native and modern development practices.
Git: From Commit to Merge
2018Workshop covering Git fundamentals, from basic commits to advanced merging strategies and workflows.
Always interested in new opportunities, collaborations, and conversations about technology, entrepreneurship, and innovation.