Hire the Best JavaScript Developers
in Brazil

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Based on 793 client reviews
Roberto B.

Sao Paulo, Brazil

$38/hr
5.0
182 jobs

I'm graduated on Informational Systems from Mackenzie Presbyterian University (São Paulo/Brazil) and my expertise is as follows: - Leadership: team management, communication, decision-making - Business: product vision, finance, compliance, strategy - Over 18 years in software/scripts/API development/integration. - Tech leading small teams - Software engineering company owner I am able to perform development operations on the following languages/technologies/libraries: - React - React Native - Redux - Flutter - Vue JS - Python - Adonis JS - Node JS - GraphQL - Vanilla js - Next JS - PHP - Phalcon framework - Symphony - Laravel - HTML - AI & Tech: artificial intelligence, data (protecting against theft/misuse), architecture, cloud, security, emerging trends - AI Ethics: fairness, transparency, bias, privacy, responsible use I also have expertise on setting up systems using: - Firebase (automated deployment included) - AWS - Azure - Digital Ocean - Linode - OVH - VultR

  • Node.js
  • React
  • Responsive Design
  • WordPress
  • JSON
  • GraphQL
  • MySQL
  • CSS 3
  • CSS
  • Web Development
  • PHP
  • Firebase
  • Android
  • API
  • System Administration
Marcos Roberto O.

Itapetininga, Brazil

$8/hr
5.0
1 jobs

I am a Front-End Developer specializing in core web technologies: HTML5, CSS3, and modern JavaScript (Vanilla). I focus on building clean, responsive, and fast-loading websites without the unnecessary overhead of complex frameworks. I also incorporate AI-assisted workflows to optimize code efficiency, accelerate delivery times, and maintain modern development standards. Here is what I can help you with: Web Development: Building responsive landing pages and multi-page websites from scratch. Design to Code: Converting Figma or Adobe XD designs into clean, semantic HTML/CSS code. API Integration: Connecting websites to third-party APIs to fetch and display dynamic data. Bug Fixing: Troubleshooting and fixing layout bugs, responsiveness issues, and JavaScript errors. Version Control: Professional workflow using Git and GitHub to ensure safe and organized code management. I am looking to build strong long-term relationships and top-tier reviews here on Upwork, which means I offer high-quality dedication at competitive entry-level rates. Let's discuss how I can help your project!

  • JavaScript
  • Web Development
  • HTML
  • CSS 3
  • Git
  • Virtual Assistance
  • WordPress
Flavio C.

Curitiba, Brazil

$50/hr
5.0
21 jobs

Capable professional with a proven history of enhancing business operations. Proficient in problem-solving skills. Well-coordinated in addressing problems, investigating root causes, and implementing successful resolutions. 21x Salesforce Certifications ✅ Salesforce Certified Platform Developer II ✅ Salesforce Certified System Architect ✅ Salesforce Certified Application Architect ✅ Salesforce Certified Integration Architect ✅ Salesforce Certified Mulesoft Developer I ✅ Salesforce Certified Development Lifecycle and Deployment Architect ✅ Salesforce Certified Sharing and Visibility Designer ✅ Salesforce Certified Identity and Access Management Architect ✅ Salesforce Certified Data Architecture and Management Designer ✅ Salesforce Certified Platform Developer I ✅ Salesforce Certified Javascript Developer I ✅ Salesforce Certified Data Cloud Consultant ✅ Salesforce Certified Advanced Administrator ✅ Salesforce Certified Services Cloud Consultant ✅ Salesforce Certified Sales Cloud Consultant ✅ Salesforce Certified Experience Cloud Consultant ✅ Salesforce Certified User Experience Design ✅ Salesforce Certified Platform App Builder ✅ Salesforce Certified Administrator ✅ Salesforce Certified AI Associate ✅ Salesforce Certified Associate 10 Salesforce SuperBadges: * Advanced Apex Specialist * Apex Specialist * Data Integration Specialist * Lightning Web Components Specialist * Service Cloud Specialist * Process Automation Specialist * Security Specialist * Business Administration Specialist * Lightning Experience Reports & Dashboards Specialist * Aura Components Specialist

  • Salesforce
  • Salesforce Service Cloud
  • Salesforce App Development
  • Apex
  • Salesforce Lightning
  • Salesforce CRM
  • Salesforce Sales Cloud
  • API
Rodrigo S.

Sorocaba, Brazil

$30/hr
5.0
1 jobs

I specialize in building scalable web applications and high-impact automation tools designed to transform complex business challenges into streamlined, efficient operations. With a deep-rooted expertise in the Node.js, React, and TypeScript ecosystem, I don’t just write code—I engineer solutions that bridge the gap between technical excellence and business growth. My approach covers the entire software development lifecycle (SDLC). From initial requirements gathering and system architecture to seamless deployment and continuous optimization, I ensure every project is built on a foundation of clean, maintainable, and resilient code. Having an entrepreneurial background allows me to view software through a commercial lens; I understand that every feature should either save time, reduce costs, or drive revenue. Core Competencies & Impact: Full-Stack Development: Crafting responsive, high-performance user interfaces in React, backed by robust, scalable microservices and APIs in Node.js. Strategic Automation: Expert in developing custom workflow automations and integrating fragmented systems—leveraging tools like Google Apps Script and third-party APIs to eliminate manual overhead. Data-Driven Solutions: Building advanced dashboards and internal tools that turn raw data into actionable insights, empowering teams to make faster, better-informed decisions. Architecture & Scalability: Designing systems that are not just functional today, but 'future-proof' and ready to scale as the business expands. Whether you need a sophisticated custom platform or a targeted automation to fix a leaking process, I deliver reliable, production-ready results that serve as long-term strategic assets. I am passionate about clean architecture, performance optimization, and, above all, delivering software that makes a measurable difference in how a business operates.

  • Mobile App
  • Web Development
  • Web Application
  • Product Development
Lucas A.

Goiania, Brazil

$10/hr
5.0
4 jobs

Hello, I'm a versatile creative now immersed in the world of web development. With a background in design, communication research, and brand strategy, I bring a unique perspective to front-end development. My experience in startups has fueled my passion for the dynamic and hands-on nature of technology. Let's collaborate to bring innovative solutions to life!

  • JavaScript
  • React
  • Front-End Development
  • CSS
  • HTML
  • Python
  • TypeScript
Cleber P.

Sao Paulo, Brazil

$35/hr
4.7
5 jobs

I have scraped e-commerce, retail sites, app stores, job portals, structured and unstructured blogs, validations, normalisations, etc. ✔️ 10+ Years of Software Development ✔️ 6+ Years of Web Scraping and Automation I have expertise in the following ✔️ Python ✔️ Selenium ✔️ Data Scraping ✔️ Web Automation/Automated Web Bots ✔️ Web Scraping/Web Crawling ✔️ Database Architecture (Design and Implementation) ✔️ Docker(Setup Crawlers in any cloud) ✔️ Solve CAPTCHA ✔️ Proxy Rotation

  • JavaScript
  • Node.js
  • React
  • Python
  • MongoDB
  • Front-End Development
  • Scrapy
  • Landing Page

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Cost to hire a JavaScript Developer

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