Hire the Best React.js Developers
in Brazil

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Rating is 4.9 out of 5.
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Based on 345 client reviews
Leandro M.

Franca, SP, Brazil

$75/hr
5.0
26 jobs

Hey there! This text was not generated by AI! ๐Ÿ˜‰ I'm here to help you with software architecture from scratch. We have assisted many people in building software from the ground up and refactoring their legacy projects to make them more modern, secure, and efficient. We know what weโ€™re doing. Letโ€™s schedule a quick 10-minute call to discuss your project and explore how we can work together. I look forward to hearing from you! Keywords: AWS, Serverless, AWS Lambda, Microservices, REST APIs, Cloud Architecture, CI/CD, Docker, Scalable Systems, High Availability, Distributed Systems, NoSQL & SQL Databases, Performance Optimization, Security Best Practices.

  • React
  • JavaScript
  • PHP
  • Vue.js
  • Laravel
  • MySQL
  • Amazon Web Services
  • Next.js
  • Node.js
  • Nuxt.js
  • Tailwind CSS
  • AWS Amplify
  • AWS Lambda
  • Amazon S3
  • Amazon Cognito
Gabriel Haruki S.

Taquarituba, Brazil

$22/hr
5.0
25 jobs

A Senior Software Engineer who can help you by making any type of website or mobile app. Please, check my portfolio to see examples. ๐Ÿงฐ My skill set - Programming Languages: Javascript | Dart - Front-end: ReactJS | VueJS | NextJS | HTML | CSS | SCSS | Bootstrap - Back-end: NodeJS, NestJS, Express | Docker | Firebase - Database: SQL | MySQL | PostgreSQL | MongoDB - Mobile: React Native, Expo | Flutter - QA: Manual functional, test automation - Others: Figma | WordPress | Puppeteer (Web Scraping) ๐Ÿ‘จ๐Ÿปโ€๐Ÿ’ป About me A BSc in Computer Science who has worked as a Full-stack Web Developer for about seven years, and loves solving complex problems and learning from them. Also an avid contributor to the open-source community that likes to develop side projects as a way of learning. Recently founded a software house company called iOHub Digital to help companies automate their processes and build a digital presence.

  • Responsive Design
  • React Native
  • React
  • JavaScript
  • TypeScript
  • Node.js
  • Mobile App Development
  • Computer Science
  • Redux
  • SQL Programming
  • Docker
  • Front-End Development
  • Web Application
  • Vue.js
  • SQL
Nicolas Alberto D.

Pouso Alegre, Brazil

$50/hr
5.0
2 jobs

Software Engineer, high skilled in .NET framework (C#, ASP.NET), NodeJS, Javascript, Java, cloud-based applications, software engineering and architecting, building and delivering new softwares, enhancing existing ones with the most modern patterns found nowadays, with scalability and reliability. Team leadership, Guild leadership and scrum master competencies in OSS/BSS solutions. Running sprints in an Agile environment, supporting the Product Owners and focusing on maximum quality and incremental deliveries of the products.

  • JavaScript
  • Java
  • Google Cloud Platform
  • Tech & IT
  • Elasticsearch
  • PostgreSQL
  • RESTful API
  • Continuous Integration
  • Software Architecture & Design
  • MySQL
  • Node.js
  • .NET Framework
  • Cloud Computing
  • Database Architecture
  • Amazon Web Services
  • C#
Abner S.

Porto Real, Brazil

$45/hr
5.0
5 jobs

๐Ÿš€I am a Full Stack Developer with 6+ years of experience specializing in React.js, Next.js, TypeScript, Python, Node.js, C#, .NET and cloud computing. I have strong expertise in frontend & backend development, API design, SQL and NoSQL databases, and building scalable systems on AWS. I deliver high-quality web applications using modern frameworks like NestJS and Tailwind CSS, with a focus on performance, security, and user experience. Passionate about solving complex problems and continuous learning, I thrive in collaborative, fast-paced environments. ๐Ÿ’ชI continuously invest in my skills and hold certifications in Full Stack Development (Growdev), Backend and Python & Cloud Computing (Tera Treinamentos Profissionais LTDA), and React.js (Tera Treinamentos Profissionais LTDA). I also completed the NLW Connect React Program with Rocketseat, deepening my expertise in modern React ecosystems. ๐Ÿ’ผ Tech Stack Highlights: โ— Frontend: React.js, Next.js, Angular, TypeScript, JavaScript, Tailwind CSS, MUI โ— Backend: Node.js, Express.js, Python, Django, FastAPI, C#, .NET, RESTful APIs, โ— Databases: SQL, PostgreSQL, MySQL, MongoDB, Firebase, โ— Cloud & DevOps: AWS (S3, Lambda, API Gateway, ECS), Azure, Docker, Kubernetes, CI/CD pipelines โ— Authentication: OAuth2, JWT, Firebase Authentication โ— Other Tools & Technologies: Postman, Git, Stripe integration, AI/ML, Large Language Models (LLMs) ๐Ÿ”ง Iโ€™m passionate about solving real-world problems, bringing clean, efficient code and clear communication to every project. Whether you're starting from scratch or scaling an existing system, I'm here to build with youโ€”fast, reliably, and professionally. Let's connect and embark on a journey to create software that stands out and delivers results!

  • React
  • JavaScript
  • SQL
  • Node.js
  • TypeScript
  • RESTful API
  • Python
  • C#
  • ASP.NET
  • Next.js
  • ExpressJS
  • Django
  • Tailwind CSS
  • Angular
Patrick M.

Guarulhos, Brazil

$28/hr
4.8
11 jobs

๐—œ ๐—ต๐—ฒ๐—น๐—ฝ ๐—ฐ๐—ผ๐—บ๐—ฝ๐—ฎ๐—ป๐—ถ๐—ฒ๐˜€ ๐—ฎ๐—ป๐—ฑ ๐—ฒ๐—ป๐˜๐—ฟ๐—ฒ๐—ฝ๐—ฟ๐—ฒ๐—ป๐—ฒ๐˜‚๐—ฟ๐˜€ ๐—ฑ๐—ฒ๐˜€๐—ถ๐—ด๐—ป ๐—ฎ๐—ป๐—ฑ ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ ๐—ด๐—ฟ๐—ฒ๐—ฎ๐˜ ๐—ฎ๐—ฝ๐—ฝ๐—น๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐˜๐—ต๐—ฟ๐—ผ๐˜‚๐—ด๐—ต ๐—ฆ๐—–๐—”๐—Ÿ๐—”๐—•๐—Ÿ๐—˜ ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜. 50+ websites developed, 3+ years of experience, $10K+ of savings with optimizations ๐—”๐—น๐—น ๐—ผ๐—ณ ๐˜๐—ต๐—ฒ๐—บ ๐˜๐—ฎ๐—ธ๐—ฒ๐—ป ๐˜๐—ต๐—ฟ๐—ผ๐˜‚๐—ด๐—ต ๐—บ๐˜† ๐—”-๐—ญ ๐—ฝ๐—ฟ๐—ผ๐—ฐ๐—ฒ๐˜€๐˜€ ๐˜๐—ผ ๐—ฐ๐—ฟ๐—ฒ๐—ฎ๐˜๐—ฒ ๐˜๐—ต๐—ฒ ๐—ฏ๐—ฒ๐˜€๐˜ ๐˜๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐˜† ๐—ฎ๐—ป๐—ฑ ๐—ถ๐—ป๐—ณ๐—ฟ๐—ฎ๐˜€๐˜๐—ฟ๐˜‚๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ ๐—ฒ๐—ป๐˜€๐˜‚๐—ฟ๐—ถ๐—ป๐—ด ๐˜€๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† & ๐—ฒ๐—ณ๐—ณ๐—ถ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐˜†. I've built web solutions for top Brazilian companies like MASP and Senac, as well as contributed to open-source projects; today working with worldwide clients through Upwork ๐Ÿ‘จ๐Ÿพโ€๐Ÿ’ป ๐—Ÿ๐—ถ๐—ธ๐—ฒ ๐˜„๐—ต๐—ฎ๐˜ ๐˜†๐—ผ๐˜‚โ€™๐—ฟ๐—ฒ ๐—ต๐—ฒ๐—ฎ๐—ฟ๐—ถ๐—ป๐—ด? ๐—œ๐—ป๐˜ƒ๐—ถ๐˜๐—ฒ ๐—บ๐—ฒ ๐˜๐—ผ ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ท๐—ผ๐—ฏ ๐—ผ๐—ป ๐—จ๐—ฝ๐˜„๐—ผ๐—ฟ๐—ธ ๐˜๐—ผ ๐˜€๐—ฐ๐—ต๐—ฒ๐—ฑ๐˜‚๐—น๐—ฒ ๐—ฎ ๐—™๐—ฅ๐—˜๐—˜ ๐—ฑ๐—ถ๐˜€๐—ฐ๐—ผ๐˜ƒ๐—ฒ๐—ฟ๐˜† ๐—ฐ๐—ฎ๐—น๐—น ๐˜๐—ผ ๐—ณ๐—ถ๐—ป๐—ฑ ๐—ผ๐˜‚๐˜ ๐—ต๐—ผ๐˜„ ๐˜„๐—ฒ ๐—ฐ๐—ฎ๐—ป ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ ๐˜€๐—ผ๐—บ๐—ฒ๐˜๐—ต๐—ถ๐—ป๐—ด ๐—ฎ๐—บ๐—ฎ๐˜‡๐—ถ๐—ป๐—ด ๐˜๐—ผ๐—ด๐—ฒ๐˜๐—ต๐—ฒ๐—ฟ.๐Ÿ”Ž Here's what you can expect when you choose to work with me: โญ ๐—–๐—ผ๐˜€๐˜-๐—˜๐—ณ๐—ณ๐—ฒ๐—ฐ๐˜๐—ถ๐˜ƒ๐—ฒ๐—ป๐—ฒ๐˜€๐˜€: Tired of burning cash on ridiculous development costs? It's time to stop the madness! Our solution slashes expenses without sacrificing quality, so you can say goodbye to flushing money down the drain. โญ ๐—™๐—น๐—ฒ๐˜…๐—ถ๐—ฏ๐—ถ๐—น๐—ถ๐˜๐˜†: You are not dependent on me! My development process consists of constant communication and transparency, everything I do is geared to allow you to have full control of everything built. โญ ๐—ฆ๐—ฐ๐—ฎ๐—น๐—ฎ๐—ฏ๐—น๐—ฒ: Frustrated by the limitations of current solutions that fail to accommodate your business's expansion? My expertise guarantees that your applications are robustly constructed, equipped to confront any obstacles that may arise. ___ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐˜๐—ฎ๐—ฐ๐—ธ Design: Figma, WebStudio Languages: JavaScript, TypeScript, PHP, Python, PowerShell Frameworks and Libraries: Next.js, Angular, React, Vue, Lit.js, Qwik.js, Laravel, Inertia.js, Node.js, Deno.js Web: HTML, CSS, Web Components, UI/UX, Responsive Design Tools: Docker, n8n ๐—œ๐—ป๐˜ƒ๐—ถ๐˜๐—ฒ ๐—บ๐—ฒ ๐˜๐—ผ ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ท๐—ผ๐—ฏ ๐—ผ๐—ป ๐—จ๐—ฝ๐˜„๐—ผ๐—ฟ๐—ธ ๐˜๐—ผ ๐˜€๐—ฐ๐—ต๐—ฒ๐—ฑ๐˜‚๐—น๐—ฒ ๐—ฎ ๐—™๐—ฅ๐—˜๐—˜ ๐—ฑ๐—ถ๐˜€๐—ฐ๐—ผ๐˜ƒ๐—ฒ๐—ฟ๐˜† ๐—ฐ๐—ฎ๐—น๐—น ๐˜๐—ผ ๐—ณ๐—ถ๐—ป๐—ฑ ๐—ผ๐˜‚๐˜ ๐—ถ๐—ณ ๐˜„๐—ฒ ๐—ฐ๐—ฎ๐—ป ๐—ฏ๐˜‚๐—ถ๐—น๐—ฑ ๐˜€๐—ผ๐—บ๐—ฒ๐˜๐—ต๐—ถ๐—ป๐—ด ๐—ฎ๐—บ๐—ฎ๐˜‡๐—ถ๐—ป๐—ด ๐˜๐—ผ๐—ด๐—ฒ๐˜๐—ต๐—ฒ๐—ฟ. ๐Ÿ”Ž

  • React
  • JavaScript
  • API Integration
  • TypeScript
  • Laravel
  • PHP
  • Python
  • Web Development
  • Landing Page
  • Web Design
  • Testing
  • UX & UI
  • Mobile App
  • Node.js
Christian E.

Ilhabela, Brazil

$64/hr
4.6
28 jobs

Need a senior architect who designs business-focused solutions and handles backend AI pipelines, RAG, or complex ETL at scale? Whether Python, Node.js, Go, or many others, I've shipped production systems for 16+ years, including: HIPAA-compliant platforms, identity infrastructure, and LLM-powered APIs on AWS. What sets me apart: behind my backend specialization, speed, quality, and cost stay balanced because you see every trade-off and make the call with me. I don't just wire up an API. I architect the data flow, own the cloud infrastructure, and handle complex auth (OAuth2, OIDC, SAML),so you don't need to manage different contractors. With Top Rated Plus status and $150K+ earned across 7 active contracts, my clients keep coming back for two simple reasons: I communicate clearly, and I ship on time. ๐Ÿ Python backends โ€” FastAPI, Flask, Django, async workers, parallelism โšก Node.js / TypeScript APIs โ€” Express.js, Nest.js, REST, GraphQL, Supabase integrations ๐Ÿน Golang services โ€” high-performance APIs, concurrency, microservices ๐Ÿค– AI & RAG pipelines โ€” LLM orchestration, vector search, embedding workflows ๐Ÿ“Š ETL & data engineering โ€” GCP BigQuery, PostgreSQL, MongoDB, Kafka, RabbitMQ, SQS โ˜๏ธ Cloud & DevOps โ€” AWS (Lambda, EC2, S3, Step Functions), GCP, Docker, Kubernetes, Helm ๐Ÿ” Identity & Auth โ€” OAuth2, OIDC, SAML, OpenID Connect ๐ŸŒ Full-stack when needed โ€” React.js, Next.js, Redux, Vue.js โœ… Top Rated Plus on Upwork โ€” top 3% of talent โœ… 16+ years of software development experience โœ… Led HIPAA-compliant mental health platform as sole technical owner (Node.js + AWS) โœ… Redesigned inbound identity module of Gluu, open-source IAM platform (SAML โ†’ OpenID Connect proxy) โœ… Certified: Programming with Google Go (UC Irvine) | Cloud Native Dev with Node.js, Docker & Kubernetes โœ… Acted as Product Lead and CTO โ€” I understand business context, not just code Send me a message with what you're trying to build or fix โ€” a single sentence is enough to start. I'll tell you how I'd approach it and the trade-offs to expect, so you can evaluate the fit before we scope anything. Detailed spec or just a rough idea, send it over.

  • Python
  • Node.js
  • REST API
  • FastAPI
  • OAuth
  • ETL
  • AWS Lambda
  • Docker
  • PostgreSQL
  • Back-End Development
  • TypeScript
  • Flask

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