JOÃO VINÍCIUS GUERBER DE SOUZA

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Senior Software Engineer (Front-end & Mobile)

Senior Software Engineer at Invillia who cut Casas Bahia Pay crashes by 98% and app loading time by 75%.

BrazilSenior Software Engineer (Front-end & Mobile) at Invillia

Experience

Senior Software Engineer (Front-end & Mobile)
Engineered system-wide stabilization reducing weekly crashes by 98% and optimizing memory footprint by 55%. Led technical strategy, mentored developers, and implemented AI-driven tools to automate workflows.
React NativeReactTypeScriptKotlinSwiftFastlaneGitHub ActionsAzure DevOpsAppdomeJest
Mid-Level Software Engineer (Front-end & Mobile)
Architected an enterprise Design System using Storybook and distributed it via GitHub Packages. Developed native modules and maintained robust mobile applications with a focus on scalability and testing.
React NativeReactTypeScriptStorybookGitHub PackagesKotlinSwiftFastlaneGitHub ActionsAzure DevOpsJest
Mid-Level Mobile & Front-end Developer
Developed and maintained cross-platform applications and web interfaces using React, Next.js, and React Native (Expo). Owned feature implementation from design to deployment and mentored junior developers.
ReactReact NativeNext.jsExpoTypeScriptJestVitest
Junior Front-end Developer
Contributed to the development and maintenance of web and mobile products built with React, React Native, and TypeScript. Implemented unit tests with Jest to maintain code quality standards.
ReactReact NativeTypeScriptJest
Web Developer
Provided on-demand web development solutions for digital marketing agencies and clients. Developed and maintained applications using PHP, JavaScript, and CSS, and created conversion-optimized landing pages.
PHPJavaScriptCSSHTMLWordPress

Education

Amazon Web Services (AWS)
In progress, expected completion in Q4 2026.
In progress, expected completion in Q4 2026.
GitHub
Certified GitHub Copilot from 2025 to 2028.
Certified GitHub Copilot from 2025 to 2028.
Uninter
Associate Degree in Systems Analysis and Development from 2019 to 2021.
Associate Degree in Systems Analysis and Development from 2019 to 2021.

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Experience

Senior Software Engineer (Front-end & Mobile)

Engineered system-wide stabilization reducing weekly crashes by 98% and optimizing memory footprint by 55%. Led technical strategy, mentored developers, and implemented AI-driven tools to automate workflows.

React NativeReactTypeScriptKotlinSwiftFastlaneGitHub ActionsAzure DevOpsAppdomeJest

Mid-Level Software Engineer (Front-end & Mobile)

Architected an enterprise Design System using Storybook and distributed it via GitHub Packages. Developed native modules and maintained robust mobile applications with a focus on scalability and testing.

React NativeReactTypeScriptStorybookGitHub PackagesKotlinSwiftFastlaneGitHub ActionsAzure DevOpsJest

Mid-Level Mobile & Front-end Developer

Developed and maintained cross-platform applications and web interfaces using React, Next.js, and React Native (Expo). Owned feature implementation from design to deployment and mentored junior developers.

ReactReact NativeNext.jsExpoTypeScriptJestVitest

Junior Front-end Developer

Contributed to the development and maintenance of web and mobile products built with React, React Native, and TypeScript. Implemented unit tests with Jest to maintain code quality standards.

ReactReact NativeTypeScriptJest

Web Developer

Provided on-demand web development solutions for digital marketing agencies and clients. Developed and maintained applications using PHP, JavaScript, and CSS, and created conversion-optimized landing pages.

PHPJavaScriptCSSHTMLWordPress

Education

Amazon Web Services (AWS)

In progress, expected completion in Q4 2026.

GitHub

Certified GitHub Copilot from 2025 to 2028.

Uninter

Associate Degree in Systems Analysis and Development from 2019 to 2021.