Hire the best JavaScript Developers in Barueri, BR

Check out JavaScript Developers in Barueri, BR with the skills you need for your next job.
Clients rate JavaScript developers
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4.8/5
based on 793 client reviews
  • $64 hourly
    LOOKING FOR LONG-TERM/FULL-TIME PROJECTS - I'm a hands-on and award-winning Data Scientist and Full-Stack Developer with an accounting/business background and extensive experience in over 120 Web Dev & Data Science Projects for more than 45 different companies/clients. I excel in using open-source tools to create entire data web apps, SAAS, dashboards, and other data/web products from scratch. MY DATA + WEB DEV PORTFOLIO: (https://)portfolio.trich.ai/ I have worked in a variety of business solutions, including Churn Prediction, Customer Segmentation, Marketing Analytics, recommender systems, data visualization platforms, and much more. I am familiar with technologies such as Plotly Dash, Next.js, React.JS, HTML, CSS, FastAPI, Pandas, Numpy, TensorFlow, PyTorch, MongoDB, Prisma, Node.js and more. I am a top-rated and expert-vetted data scientist/developer on Upwork and a Kaggle Grandmaster with 17 gold medals, 8 silver medals, and 14 bronze medals. My technical abilities have been recognized as I was the technical reviewer of the first Plotly Dash book and many of my projects were bought by the O'Reilly learning platform. # IMPORTANT More than a developer/data scientist, I'm a problem solver focused on helping you to solve the problems you have in your company/team, so don't hesitate to reach out to me even if you only want to discuss something or if you have any questions. I would love to help. # The tech stack I do have experience with is: Plotly Dash, HTML, CSS, FastAPI, React Js, Next.js, Node.js Pandas, Numpy Scipy, Scikit Learn, TensorFlow, PyTorch, MongoDB, Dask, PySpark, GraphQL (graphene, strawberry, Ariadne), Plotly, Seaborn, Matplotlib, dashboards, Streamlit, and all the PyData stack; Also I have experience using Docker, Git, Postgres, Airflow, MongoDB, Prisma, AWS s3, GCP, Azure, bash script, system administrator Linux. ## PROFILES - Technical and Professional Links - Kaggle - https://+kaggle.com/kabure/ (2.3k+ followers) - Github - https://+github.com/kaburelabs (460+ followers ) - Medium - https://+medium.com/@kabure (1.3k+ followers) _______________________________________________ Feel free to reach out to me with any questions or to discuss how I can help you generate more value for your business. I look forward to hearing from you. Regards, Leonardo
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Next.js
    Data Analytics & Visualization Software
    Software Development
    Visualization
    Front-End Development
    Data Analysis
    ExpressJS
    Data Science
    Web Application
    React
    Machine Learning
    Python
    Plotly
    Data Visualization
  • $9 hourly
    I'm a passionate web developer with knowledge and experience with infrastructure, developing and maintaining web applications with Node.js (JavaScript/ TypeScript), GitHub, SQL, NoSql Databases and Pipelines
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Back-End Development
    Linux
    Software
    GitHub
    Node.js
    AWS Lambda
    RESTful API
    Laravel
    MySQL
    RESTful Architecture
    Docker
    TypeScript
  • $10 hourly
    Hello, I am Felipe. I have intermediate English proficiency, which allows me to communicate effectively and collaborate on international projects. As a reserved and dedicated individual, my goal is to deliver efficient, high-quality solutions while continuously enhancing my technical skills. I specialize in JavaScript and am currently focused on completing a course to deepen my expertise in this language. Through practical experience in web development, I am committed to expanding my knowledge and abilities. I also look forward to working with frameworks like React and Node.js in the future.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Brazilian Portuguese Dialect
    English to Brazilian Portuguese Translation
    Brazilian Portuguese to English Translation
    Proofreading
    Video Transcription
    Translation
    Scripting
    Web Development
    Version Control
    Responsive Design
    API Integration
    CSS 3
    HTML5
  • $56 hourly
    I am currently a Staff Product Designer specialized in building scalable Design Systems with a focus on Developer Experience (DX). I lead design initiatives that improve the efficiency and productivity of internal development teams. I combine expertise in UX/UI with extensive experience in frontend development (ReactJS, NextJS, JavaScript, CSS) to create interfaces and tools that optimize developers' workflow. I've developed plugins for the Figma community that help over 10,000 designers globally, demonstrating my commitment to innovation and supporting the design and development community.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    UX & UI Design
    Web Development
    Product Development
    Web Application
    CSS
    HTML
    Next.js
    Figma to Webflow Plugin
    UI/UX Prototyping
    Landing Page
    Framer
    Figma
  • $50 hourly
    I'm a Tech Lead at TotalPass, a leading company on health and well being promotion, which offers access to thousand of Gyms and related services over several cities in Brazil and Latin America. I have over 12 years' experience in Web Development, with a degree in Digital Games Technology from Fatec Carapicuíba. At Tembici, I lead a team of developers responsible for creating and maintaining web platforms that integrate vehicle management, monitoring, operation and tracking systems, guaranteeing the security, availability and performance of services, as well as leading the development of an anti-fraud engine responsible for helping to maintain a healthy user base. I'm also a web mentor and trainer, sharing my knowledge and skills with students and professionals looking to improve or reinvent themselves in the field. I'm passionate about cycling, judo, motorcycle mechanics and education. I believe that technology can be a powerful tool for improving people's quality of life and the environment.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    PostgreSQL
    FastAPI
    Google Cloud Platform
    Amazon Web Services
    Redis
    MongoDB
    CSS
    HTML
    TypeScript
    Node.js
    Ruby on Rails
    Ruby
    Django
    Python
  • $13 hourly
    I hold a degree in Systems Analysis and Development and work as a Data Analyst, handling large volumes of data to build dashboards that support data-driven decision making. I have experience with large companies such as BRF (Perdigão, Sadia), Burger King, Alpargatas (Havaianas), and TLC (the new SEMP Toshiba). I specialize in data analysis and process automation, and have also worked on projects in the agribusiness sector with companies like Jalles Machado and Aço Cearense. I believe that through technology, companies can optimize time and investments, contributing to more efficient financial returns. I value environments where employees feel respected and comfortable to contribute. I enjoy working in dynamic teams and participating in ceremonies Sou formado em Análise e Desenvolvimento de Sistemas e trabalho como Analista de Dados, lidando com grandes volumes de dados para construir dashboards que apoiam a tomada de decisões baseada em dados. Tenho experiência em grandes empresas como BRF (Perdigão, Sadia), Burger King, Alpargatas (Havaianas) e TLC (a nova SEMP Toshiba). Sou especializado em análise de dados e automação de processos, além de ter atuado em projetos no setor de agronegócios com empresas como Jalles Machado e Aço Cearense. Acredito que, por meio da tecnologia, as empresas podem otimizar tempo e investimentos, contribuindo para retornos financeiros mais eficientes. Valorizo ambientes onde os colaboradores se sintam respeitados e à vontade para contribuir. Gosto de trabalhar em equipes dinâmicas e participar de cerimônias
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Microsoft Excel
    Microsoft Power BI
    SAP Analytics
    SAP HANA
    ETL
    SQL
    Python
  • $10 hourly
    I hold a degree in Computer Science and have over four years of experience in the international market, leading projects and developing customized solutions. I am proficient in various programming languages, including Python, JavaScript, Java, and C++, and have extensive expertise in Microsoft tools such as Power Automate, Dataverse, and Power Apps. I frequently work as a consultant on digital transformation projects, helping companies optimize their processes and adopt new technologies. Recently, I have started dedicating part of my time to mentoring young people at the beginning of their technology careers and individuals seeking to acquire new knowledge or transition into a new career.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Robotic Process Automation
    Automation
    Mobile App
    Flask
    React
    TypeScript
    Node.js
    Microsoft Power Automate
    Microsoft Power BI Development
    Landing Page
    Python
    Web Application
    Web Development
    Desktop Application
  • $10 hourly
    +3 years experience as a FullStack Developer, with a growing experience in Mobile Development as Swift and Kotlin and UX/UI. I am a full stack developer with strong expertise in Java (versions 8, 11, and 17), complemented by in-depth knowledge of technologies and frameworks such as Rest API, gRPC, Spring Boot, JUnit, Maven, and MySQL databases. I work with agile methodologies to ensure efficient, high-quality deliveries. Currently, I am expanding my skills in mobile development with SwiftUI, while also enhancing my capabilities in Product Design with a focus on UX/UI. I am passionate about using technology to drive innovation and am constantly seeking new opportunities to grow, learn, and collaborate on dynamic projects. My goal is to deliver efficient and creative solutions while working on nice projects with people around the world. Let’s connect and explore possibilities together!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Apache Camel
    JUnit
    SQL
    Atlassian Confluence
    Spring Boot
    Git
    CSS
    HTML
    Java
    Web Development
    Web Application
    International Development
    iOS Development
    App Development
  • $10 hourly
    Sou um desenvolvedor web apaixonado por criar soluções inovadoras e eficientes. Com uma sólida experiência em front-end e back-end, busco sempre entregar a melhor experiência ao usuário, aliando design e funcionalidade de forma fluida e intuitiva. Meu foco é construir aplicações web rápidas, seguras e fáceis de usar. O que eu faço melhor: Desenvolvimento Front-End: Utilizo tecnologias como HTML, CSS, JavaScript e React.js para criar interfaces atraentes e responsivas. Desenvolvimento Back-End: Tenho experiência com Node.js, PHP, MySQL e MongoDB, garantindo soluções robustas e escaláveis. Integração de APIs: Trabalho na integração de sistemas externos para criar soluções completas e dinâmicas. Design Responsivo: Adoro otimizar a experiência do usuário, garantindo que minhas aplicações funcionem perfeitamente em qualquer dispositivo. Minha missão: Criar produtos digitais que não só atendem às necessidades dos usuários, mas também superam suas expectativas. Estou sempre em busca de novos desafios e oportunidades para crescer, aprender e compartilhar meu conhecimento com outros desenvolvedores e com a comunidade.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Django
    React
    CSS
    HTML
  • $20 hourly
    With a creative and strategic approach, I have specialized in developing and implementing content strategies for social media that not only engage but also convert. I possess hands-on experience in creating impactful and measurable campaigns, capable of establishing a deep emotional connection between brands and their target audience. My experience spans various market niches, from tech startups to consumer brands, always with the goal of optimizing visibility and interaction on social platforms. I use advanced tools such as Buffer and Google Analytics to monitor, analyze, and adjust strategies as necessary, thus ensuring maximum return on investment. Among my standout projects, I managed a campaign for a fashion brand that resulted in an 80% increase in social media engagement in just three months. I also led content marketing initiatives that doubled the lead conversion rate in email campaigns for a software company. I am eager to collaborate with your brand, bringing my expertise to expand your reach and strengthen your online presence. Let's transform your social media strategy together and achieve extraordinary results.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Social Media Content Creation
    Video Editing & Production
    Copywriting
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