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I'm Johnny Gregorio, a dynamic Full Stack Engineer based in Curitiba, Brazil. I have over five years of experience building scalable web applications with Node.js and React (TypeScript). I'm passionate about delivering robust backend services and responsive front-end interfaces that scale under load. I've earned three promotions within three months at Arch and have delivered significant impact across high-load projects. I thrive on optimizing code, refining architectures, and managing cloud infrastructure. I enjoy mentoring teammates to help them grow and contribute to successful, client-aligned solutions.…I'm Johnny Gregorio, a dynamic Full Stack Engineer based in Curitiba, Brazil. I have over five years of experience building scalable web applications with Node.js and React (TypeScript). I'm passionate about delivering robust backend services and responsive front-end interfaces that scale under load. I've earned three promotions within three months at Arch and have delivered significant impact across high-load projects. I thrive on optimizing code, refining architectures, and managing cloud infrastructure. I enjoy mentoring teammates to help them grow and contribute to successful, client-aligned solutions.

Johnny Gregorio

Full Stack Developer, Web Developer, Back-End Developer, +2

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I'm Johnny Gregorio, a dynamic Full Stack Engineer based in Curitiba, Brazil. I have over five years of experience building scalable web applications with Node.js and React (TypeScript). I'm passionate about delivering robust backend services and responsive front-end interfaces that scale under load. I've earned three promotions within three months at Arch and have delivered significant impact across high-load projects. I thrive on optimizing code, refining architectures, and managing cloud infrastructure. I enjoy mentoring teammates to help them grow and contribute to successful, client-aligned solutions.…I'm Johnny Gregorio, a dynamic Full Stack Engineer based in Curitiba, Brazil. I have over five years of experience building scalable web applications with Node.js and React (TypeScript). I'm passionate about delivering robust backend services and responsive front-end interfaces that scale under load. I've earned three promotions within three months at Arch and have delivered significant impact across high-load projects. I thrive on optimizing code, refining architectures, and managing cloud infrastructure. I enjoy mentoring teammates to help them grow and contribute to successful, client-aligned solutions.

Available to hire

I’m Johnny Gregorio, a dynamic Full Stack Engineer based in Curitiba, Brazil. I have over five years of experience building scalable web applications with Node.js and React (TypeScript). I’m passionate about delivering robust backend services and responsive front-end interfaces that scale under load.

I’ve earned three promotions within three months at Arch and have delivered significant impact across high-load projects. I thrive on optimizing code, refining architectures, and managing cloud infrastructure. I enjoy mentoring teammates to help them grow and contribute to successful, client-aligned solutions.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Advanced

Work Experience

Tech Lead & Full Stack Engineer at Pravix Remote

July 1, 2025 - Present

Led the development of scalable web applications using a main stack of Node.js and React (TypeScript). Architected robust backend services and guided the team on best practices, performance optimizations, and architectural decisions.

Lead Full Stack Developer at Arc HR Remote

March 1, 2024 - July 1, 2025

Returned to lead a project mid-way, delivering three promotions within three months. Optimized the codebase, restructured parts of the database model to align with client expectations and project architecture, and mentored junior developers.

Customer Technical Support Engineer at TV Coins Worldwide

August 1, 2023 - March 1, 2024

Identified and resolved issues in the web player and partner portals, delivering effective solutions and deploying adjustments across platforms. Worked with vanilla JavaScript, HTML, CSS, React, and WordPress templates. Served as an integrations specialist, enhancing system interoperability and addressing feature requests for production deployments.

Full Stack Developer at Arc H Brazil

March 1, 2023 - August 1, 2023

Engaged in debugging, developing new features, and maintaining legacy code. Contributed to projects with heavy data loads and payment systems; collaborated with development and architecture teams; organized task schedules; mentored new developers; ensured PCI-DSS compliance.

Full Stack Developer at Arc HR Remote

July 1, 2022 - October 1, 2022

Contributed across multiple projects, conducted code reviews to ensure quality and adherence to best practices, managed cloud infrastructure to optimize performance and reliability, and maintained legacy code for seamless operations. Developed new products to meet market demands and provided mentorship to peers.

Front-End Developer at Seide Cor Curitiba

January 1, 2022 - June 1, 2022

Focused on front-end development, building interactive user interfaces using vanilla JavaScript, HTML, and CSS. Collaborated closely with design and back-end teams to deliver polished UI components.

Full Stack Developer at JanxTech Curitiba

October 1, 2022 - November 1, 2022

Worked across front-end and back-end stacks, contributed to cloud infrastructure improvements, and participated in code reviews to maintain quality and reliability.