Hire the best JavaScript Developers in Beijing, CN

Check out JavaScript Developers in Beijing, CN with the skills you need for your next job.
Clients rate JavaScript developers
Rating is 4.9 out of 5.
4.9/5
based on 247 client reviews
  • $45 hourly
    ⭐ 14+ years of experience - Senior DevSecOps / Cloud Computing / Sofware Development 🚀 35+ successfully completed projects ⏳ 3500+ Hours worked on Upwork Hello, I'm Andrew, a tech expert with more than 14 years of IT experience. I focus on software development, cloud computing, and DevOps staff and do a really good job. I have worked for all kinds type of companies and clients from startups to Fortune 500. I am also a Udemy instructor with over 10K students taking my courses worldwide. As a technical expert, I have helped Test Gorilla come up with Terraform and Git interview questions to evaluate the skills of interviewees I EARN/SAVE MONEY FOR OUR CUSTOMERS by - allowing their business to expand (or start sometimes:) - automating processes and reducing operational cost - using newer and more efficient technology - long-run cost reduction because of high-quality software. Skills ✅ DevSecOps - AWS , Azure , GPC , Alibaba cloud - CI/CD - Kubernetes - GitOps with ArgoCD , FluxCD , Grafana , Prometheus ... ✅ Cloud applications Cloud, serverless, scalable applications, architecture, and development for AWS , Azure , GCP , Alibaba cloud ✅ Complex system development, API integration, and development Develop custom software from A to Z, build sophisticated APIs, and integrate third-party APIs, data hubs, and gateways. ✅ Internet of Things (IoT) Connect and manage thousands of simple and complex devices on the cloud, custom automation, reports, and analytics. ✅ Backend Development - Java - Node.js ✅ Other Workflow automation, Performance optimization, QA automation. Some Tech Details ✓ Programming Languages: Java, Golang, Node.js, Spring, SpringBoot, JavaEE, JavaFX ✓ Cloud: AWS, Azure, AliCloud, Google Cloud, Docker, Kubernetes, ECS, Cloud-native apps, scalable clusters, zero-downtime deployment. ✓ Databases: Oracle/PostgreSQL/MySQL, big volume storage (AWS Redshift, AWS Athena/S3, Aurora, Cassandra, HDFS), Redis, MongoDB. ✓ API integrations: REST, SOAP, XML-RPC, WebServices, WebSockets, etc. ✓ AWS: Clusters, Kinesis, Athena, Redshift, DynamoDB, Lambda, IoT, SQS/SNS, CloudFront/Route53/ApiGateway, vast AWS API usage, and automation. ✓ Azure: Application Gateway, API Management, Storage Account, App Service, Function App, Key Vault, EventHub, Traffic-Manager, Log Analytics ✓ Performance optimization: JMeter, JProfiler, AWS X-Ray, GTMetrix, Gatling. ✓ CI/CD: Bamboo, Jenkins, Circle CI, GitHub Action ✓ Infrastructure as Code: Terraform, Ansible, Packer, AWS CDK , Pulumi Certificates - AZ-900 Microsoft Azure Fundamentals - Certified ScrumMaster - Terraform Associate Certification - SAFe
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Kubernetes
    TypeScript
    Continuous Integration
    Spring Boot
    DevOps
    Alibaba Cloud
    Java
    Python
    Infrastructure as Code
    Amazon Web Services
    Microsoft Azure
    Terraform
    Node.js
    React
  • $50 hourly
    Hello I am a full-time freelancer,A expert on network, focusing on IT technologies. These are the services I provide: ∗ IT support ✔ Test software/website in china mainland ✔ Install VPN ∗ Linux server maintenance ✔ Linux servers management and maintenance ∗ Translation and writting of IT technical content ✔ Translate from English to Chinese ✔ IT technical content write in Chinese If you need these service on your business, please don't hesitate to contact me.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    RESTful Architecture
    Unix System Administration
    Network Administration
    Spring Boot
    Bash Programming
    Linux System Administration
    System Administration
    Python
    English to Chinese Translation
    Git
    OpenVPN
    Java
    VPN
  • $35 hourly
    Proficient in Web, App, Nodejs and Python development. Can work independently on large web applications and mobile apps. 5+ years of experience as a senior developer. Available for Short-term/long-term contract work or part-time.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Firebase
    Koa
    English
    Flutter
    React Native
    AWS Application
    MySQL
    Vue.js
    Node.js
    MongoDB
    Next.js
    Python
    CSS
    HTML5
    React
    TypeScript
  • $38 hourly
    Hi, I am Zheng Chen, I do the right things. I'm: A full-stack developer with skillsets : * Javascript, Typescript * Node.js, Express * React, Redux, Mobx, Next.js * MUI, HTML, CSS, DOM * Domain-Driven Design, OOP * Test-driven Development and familiar with popular suits like Jest, Cypress * MongoDB, PostgreSQL, SQL * HTTP, RESTful, OpenAPI * Java + Spring-Framework A software engineer with skillset: * Kubernetes, Docker * DevOps and CI with Git, Github, Github Action * Agile methodology with some management tools. * Linux, bash shell, vim * DigitalOcena, AWS Engineering leader, major developer, and team leader on Greenstand, a US company in the ecological reforestation industry. Founder of Midinote, an innovative note-taking app. Hired by the top website in China (sohu.com), as a core team leader & architect. A log analyzer, bug solver, and code hacker. Years of remote working experience (with remote teams). Early riser. Fluent in English, and competent in oral communication. Working independently. Self-motivation. Runner stick to 6-7km per day.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Object-Oriented Programming
    Domain-Driven Design
    Test-Driven Development
    Linux
    Bash
    ExpressJS
    Agile Software Development
    Kubernetes
    Java
    D3.js
    Node.js
    React
    MongoDB
    PostgreSQL
  • $55 hourly
    A professional software developer who enjoys programming with modern technologies such as Blockchain, AI, Auto-scripting. I launched 20+ large scale web applications including the various technologies and frameworks such as REST API, React/Vue/Typescript, Postgres, MongoDB, Docker, Node/Express, Python, Django/Flask, PHP, Laravel, etc. I am an independent freelancer, working here to get a long-term contract where I can build my career. Please feel free to contact me to discuss further details. Thank you for visiting my profile.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    React Native
    Swift
    iOS Development
    Smart Contract
    Blockchain
    React
    Node.js
    Vue.js
    Database Design
    Laravel
    Python
    PHP
    TypeScript
    Django
  • $35 hourly
    I am a skilled Power BI custom visual developer. I can use React, d3.js, and Bootstrap to develop custom visuals. The custom visuals have the same functions as those official visuals. Utilities include but not limited to filter, tooltips, and custom format pane. I have three years of working experience in data analysis, with my most recent focus being on financial analytics. In this capacity, I made performance dashboards using Power BI and processed data using SQL and DAX. I started my career working as an auditor in Big Four. My clients are data- intensive organizations, which means the key to this role is understanding and analyzing large amounts of data. By leveraging advanced Excel functions (Pivot Table, VBA, and DAX), I was able to produce results timely and accurately. Apart from that, I used SQL to extract, transform and load data.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    HTML
    React
    Node.js
    TypeScript
    Microsoft Power BI
    CSS
    Data Analysis Expressions
    D3.js
    SQL
    Python
  • $50 hourly
    My designs are robust, reliable and easy to use. I hope you will sense it in my creations. Please check my portfolio below for a short video on my hardware designs. 🚀 PCB layout and schematics 🚀 STM32H7/G0 firmware design 🚀 Advanced mmWave radar design 🚀 PHP minimalistic website design 🚀 PayPal REST API v2 integration 🚀 FFMPEG advanced scripting 🚀 Lightweight offline automation Tools: - diptrace, freecad, octave, openems - visual studio 2022, codeblocks - kdenlive, ffmpeg, audacity and more..
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Embedded System
    PCB Design
    STM32F4
    STM32
    Audio Editing
    Video Editing
    Microsoft Visual Studio
    WordPress
    HTML
    PHP
    PayPal Integration
    PayPal Development
    PayPal Plugin
    Web Design
  • $40 hourly
    - 9 years of experience in 360 tour, rich experience in 360 panorama, 360 video/video stream related development, and various problem handling. - Proficient in KRpano, Top Level, capable of in-depth development, making customized functions and writing plug-ins. - Master React , Typescript, Next.js, strapi. - Can use react-three-fiber for webGL development. - Familiar with git, vercel, FFmpeg and other development tools. - Master many non-development skills, such as image processing, video editing, panorama stitching.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    CI/CD
    360-Degree Photography
    Virtual Reality
    360-Degree Video
    AR & VR
    Virtual Tour Software
    Mapbox
    React
    Tailwind CSS
    Three.js
    TypeScript
    Next.js
    PTGui
    KRPano
  • $40 hourly
    Enthusiastic and experienced Front-end Development Engineer with over 10 years of expertise. Adept at implementing and maintaining innovative web solutions. Proficient in JavaScript, TypeScript, Vue, Nuxt, NodeJS, and more. Strong leadership and management skills, contributing to the success of cross-functional teams. About Me: 1. Proficient in HTML, CSS, and Javascript (ES6+). 2. Extensive experience in Vue based development, also experienced with Nuxt, NodeJs, and other frameworks include but not limited to Bootstrap, Vuetify, Naive UI, TailwindCSS. 3. Strong grasp of coding standards, best practices and code refactoring. 4. Extensive experience on performance optimization, SEO, i18n and A11Y. 5. Familiar with compatibility and debug tool of mainstream browsers like Chrome, Safari, Edge and FireFox. 6. Excellent communication and collaboration skills honed during my tenure at Lenovo, where I worked closely with individuals from different functional roles. 7. Super fast learner of new tech knowledge and passionate about staying updated with the latest trends. Available time: 10:00-22:00 BJT (UTC+8)
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Agile Software Development
    SEO Performance
    Performance Optimization
    Web Accessibility
    jQuery
    Node.js
    Nuxt.js
    Vue.js
    webpack
    Tailwind CSS
    HTML
    SCSS
    CSS 3
    TypeScript
  • $35 hourly
    Full-stack JS expert, Firebase/Node.js/Slack/Twilio/Meteor/Parse.com/Polymer/Docker/AWS/Lambda/Google marketplace apps/Google app script/Ionic/ElasticSearch/Bots/Stripe/angular/material design/loopback/python/c++/object-c/php/bash fast solid code geek. 17 years programing experiences, known how to get thing done in proper way.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Google Apps Script
    Data Mining
    Ionic Framework
    Firebase
    C++
    Python
    AngularJS
    Node.js
  • $25 hourly
    I've been working as web designer and web developer for 12+ years. My early career started with the software and web development, it gives me a solid sense of programming and logical thinking. I grew my career step by step, learning the newest concepts in design and software industry, keeping a wide vision on it. All this makes me a full-stack web designer today. Right now, I changed myself to a full-time web & graphic designer, I'm competent in both design and UI/UE development, including front-end interaction with JS and animation with CSS. I am very proficient in Adobe Illustrator, Photoshop, Sketch, and InDesign. My experience covers the whole working chain, from design the UI to implement the layout to bring them to real things with good UE interaction. I pretty enjoy my work and I’m happy to work with clients who need beautiful design and a creative mind. I work worldwide and be available for short-term and long-term job. What I can do: - Website design - Logo, Branding - Web graphic design - Vector illustration - UI/UX - Web/App development Tools I use: - Adobe Illustrator - Adobe Photoshop - Figma, Sketch - Premiere Pro - After Effects - Adobe InDesign - Axure RP I also do web development: - HTML - CSS - Javascript - jQuery - Wordpress - MySql - Php Check my portfolio below and feel free to contact me.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Animation Design
    Motion Graphics
    Corporate Style
    UX & UI
    UI/UX Prototyping
    Adobe Photoshop
    Web Design
    Elementor
    Adobe Illustrator
    HTML
    Figma
    CSS
    Graphic Design
  • $30 hourly
    My recent job experience at sites.google.com/view/feipiao/home. 10+ years of Java Full Stack Developer. Skilled of Core Java with Multithreading,Socket(SSL). Also a .net/c/c++/flex/nodejs/js developer. Expertise in Spring-Boot, structs, Mybatis/JPA, MQ, JQuery, AngularJS, VueJs, VutefyJs. Experience in developing Corba, MFC, QlikView, MapInfo, Qt, Android, VBA, shell script & stored procedure. Experience using databases of Oracle/SqlServer/Mysql and Redis/MongoDB. Experience in developing WeChat MP platform app & mini app. Please tell me your issues, and I will find the right solutions. ( ^_^ )
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    C++
    Robot Framework
    Java
    Microsoft Outlook Development
    C#
    Macro Programming
    Node.js
    Automation
    Microsoft Windows PowerShell
    Data Scraping
    Python
    MetaTrader 4
  • $20 hourly
    Hello, I am an experienced Full Stack Developer with more than 7 years of experience in this domain. My key skills: * Front-end Development (Angular, React, Vue) * Back-end Development (NodeJS) * Database (MySQL and MongoDB) * Cloud Native (Docker, Kubernetes) Thank you for reviewing our profile. We would love to assist you with your project. Please feel free to invite us for a detailed discussion.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Mapbox
    GIS
    Apache Superset
    NestJS
    Python
    MongoDB
    MySQL
    Node.js
    React
    HTML5
    Vue.js
    CSS 3
    Next.js
  • $20 hourly
    I am a full stack development engineer with more than ten years of working experience, and I am proficient in PHP, golang, mysql, Vue, redis and other technologies
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    MySQL Programming
    TypeScript
    Redis
    PHP
    Laravel
    Yii
    Golang
    WordPress
    jQuery
    Node.js
    HTML
    Vue.js
    Git
    Custom PHP
  • $90 hourly
    I was very proficient with chromium source code. My job was customization development based on Brave and Chromium. I did Brave components migration&development, like porting Brave components like Ad block, IPFS, wallet, and VPN into other browsers.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Chrome OS
    Blockchain
    Browser Extension
    Crypto Wallet
    Web Browser
    Web3
    Swift
    C++
    Chromium
  • $25 hourly
    Professional and academic background on Performance optimization high throughput(10K+ transactions/second)system and large databases (10TB+). expert on APM( Application Performance Management & Monitoring) system, IoT(Internet of Things) system, online video and office document play system.familiar with manage and monitor k8s cluster.familiar with Design pattern,Domain-Driven Design and use that software design thinking to improve software more High-cohesion,loose coupling, flexible,extensible,easy to maintain. java: SpringBoot, mybatis,hibernate,elasticJob php: laravel ,wordpress frontend:vue,Bootstrap,jquery,css,html database:Mysql, PostgreSQL, Oracle NoSQL: Redis, mongoDB, elasticsearch; midware: rocketmq,kafka,hadoop,NFS,iFFmpeg,minio
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Web Development
    Bootstrap
    jQuery
    NoSQL Database
    MySQL
    Java
    Performance Optimization
    MongoDB
    Elasticsearch
    MyBatis
    API
    PHP
    Database
    Laravel
  • $20 hourly
    “I’m a developer with experience in building websites for small and medium sized businesses. Whether you’re trying to win work, list your services or even create a whole online store – I can help! I’m experienced in HTML and CSS 3, jQuery. I’ll fully project manage your brief from start to finish Regular communication is really important to me, so let’s keep in touch!”
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Amazon Web Services
    Back-End Development
    Front-End Development Framework
    Front-End Development
    Back-End Development Framework
    React
    TypeScript
    Java
    Spring Boot
    Vue.js
    Angular
  • $15 hourly
    ✅ I am a Full Stack Mobile and Web developer ( PHP, Java, JavaScript, React Native, React JS, Vue.js, HTML, CSS, Uniapp, ElementUI, Angular, Twailwind Css, AWS, MongoDB, Firebase, My Sql) with more than 5 years of professional experience with different technology stacks. ✅ Solid experience in the development of E-commerce, CRM, Cloud platforms, Social networking apps, News portals, High-load platforms, and Facility management platforms. ✅ Speciality: E-commerce, Social Media Apps, Block Chain, NFT Development, Logistics, Restaurant Apps, Food Delivery Apps, News Portals, Blogging, ERP Solutions, Payment Gateways (Stripe, Paypal, Google Pay, Apple Pay), Facebook Graph API integration, Google Maps Integration, and much more ✅ Tech Stack: I feel confident to work with: Frontend technologies : JavaScript, React Native, React JS, Vue.js, HTML, CSS, Uniapp, ElementUI, Angular, Twailwind Css Backend technologies: PHP, Java, AWS, MongoDB, Firebase, MySql ✅ I can offer You the following: Develop back-end and front-end functionality. End-To-End product design and development Software Architecture Design Consultation Feel free to get in touch with me if you have any questions. I am looking forward to working with you! Highlighted skills: FullStack development, FullStack Web development, FullStack Mobile development, Application Development, JavaScript (JS), Front-end Development, Back-end Development, React(React.js, ReactJS), React Native(ReactNative), Vue.js, HTML, CSS, Uniapp, ElementUI, Angular, Twailwind Css, Amazon Web Services (AWS), Firebase, MongoDB, MySql.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Full-Stack Development
    Front-End Development
    Vue.js
    Back-End Development
    Web Development
    Web3
    HTML
    React
    CSS
    NFT
    Smart Contract
    Java
    PHP
    Blockchain Development
  • $40 hourly
    I am a developer mainly in the backend software implementation, mastering languages such Java, Python, C++,sql. I also have a lot of experiences in frontend skills such as HTML5, CSS3, JQuery, Bootsrtip. I am also a successful project manager, had managed the lifecycle of many software projects in my career. So, if you have anything you think I can help, just contact me!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    CSS 3
    Test Automation
    HTML5
    jQuery
    Postman
    MySQL Programming
    SQL
    OpenCV
    Python
    C++
    Java
  • $35 hourly
    A Senior Software Engineer with 10+ years of experience specializing in web application development with Agile SCrume. A strong history of leading diverse web development teams and executing multi million dollar projects for enterprise customers. Passionate about going tthe extra mile to ensure the customer is unquestionably satisfied with the product or service provided. Eager to trackle more complex problems and continue to find ways to maximize user efficiency.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    DevOps
    Flask
    API
    AWS CloudFormation
    AWS Lambda
    Django
    AWS CodePipeline
    Python
    TypeScript
    Node.js
    CSS
    Redux
    React
    HTML
  • $50 hourly
    I'm a Web developer with 10 years of experience in building websites for small and medium sized businesses.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    HTML5
    React
    Vue.js
  • $50 hourly
    1、2年互联网行业内容运营工作经验,对互联网短视频和直播行业有深入的了解; 2、有0到1的运营策略制定、活动落地经验; 3、熟悉互联网社区平台,对爆款内容感知敏锐,以创造者与用户体验为重; 4、具有较强的沟通能力、逻辑能力、产品设计能力、宣讲能力和方案编写能力; 5、具有强烈的责任心和上进心,具备良好的团队合作精神。
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    MySQL Programming
    Chinese
  • $100 hourly
    I am an Android Engineer , During the 15 years of mobile terminal development, I have participated in the design and development of many large-scale projects, and have excellent architecture design and performance optimization capabilities. Be familiar with the features of each version of Android, and be able to choose the best technical solution according to business requirements. Proficient in all stages of Android development, including architecture design, performance optimization, interface implementation, business development, etc. I have a deep understanding of the Android system source code and mechanism, and have been widely used in practical projects. I am proficient in using mainstream open source frameworks such as RxJava, Glide, etc., and am able to repackage them to suit business needs. I also have in-depth research and practice on new technologies such as Kotlin and Jetpack components. Familiar with the Framework layer, good at following up issues through the source code environment. Familiar with AMS, WMS, PKMS, INPUT design principle.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Japanese
    English
    Android UI Design
    API Framework
    Android App
    Android NDK
    Android SDK
    HTML5
    AOSP
    Python
    Kotlin
    Java
    Android
  • $33 hourly
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    React
    Vue.js
    Front-End Development
  • $25 hourly
    Strong team spirit, good organization and coordination ability, strong sense of collective honor. Strong self-learning ability, like to study new technology, dare to face and overcome difficulties. 1、Over 9 years experience in J2EE development; 2、Proficient in Java,Familiar with B/S component and framework,Proficient in springboot\springmvc+spring+mybatis development; 3、Proficient in jsp、ajax、html、xml、JavaScript、jQuery and other Page processing technologies; 4、Familiar with Memcache,Redis and other Cache components; 5、Familiar with MySQL DB and relational database principles, ability to perform performance optimization; 6、Familiar with Linux common commands and able to write shell scripts; 7、Familiar with SVN\GIT coding Management tool; 8、Knowledge of modeling languages such as UML, PowerDesigner and other common design tools;
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Cesium
    Mapbox
    PostGIS
    Oracle
    Apache Kafka
    Spring Cloud
    HTML
    PostgreSQL
    MySQL
    Spring Framework
    Redis
    Spring MVC
    Spring Boot
    Java
  • $25 hourly
    I'm a seasoned Shopify expert optimizing online stores, enhancing performance, and creating visually stunning designs. My mission is to help you achieve a branded feel that captivates your audience and drives conversions. Why Choose Me: Shopify Mastery: With extensive experience in Shopify, I specialize in mobile optimization, speed enhancements, and design transformation. Eye-Catching Designs: My design expertise ensures that your Shopify store not only looks beautiful but also stands out with appealing, eye-catching designs that leave a lasting impression on visitors. Performance Improvement: I am committed to making your store perform at its best. From resolving cart problems and bugs to optimizing page loading times, I deliver results that boost your store's efficiency. Branded Look: I'll customize your store's branding to create a Western modern branded feel that aligns with your vision and leaves a memorable brand impression. My Services: Shopify Mobile Optimization Speed Optimization Design Transformation Theme Customization Checkout Customization Shopify Metafields Implementation Store Optimization Responsive Design for All Devices SEO Enhancements Plugin Integration Data-Driven Iteration Website Cloning and Custom Editing Print-on-Demand Features Subscription Integration Let's Elevate Your Shopify Store: Whether you're looking to transform your store's design, enhance performance, or create a brand identity that stands out, I'm here to turn your vision into reality. Let's collaborate and make your Shopify store a conversion-optimized, visually stunning success.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Front-End Development
    Figma
    Shopify Website Redesign
    Next.js
    Shopify Website Design
    Shopify SEO
    Shopify Theme
    Shopify Plus
    Shopify Development
    CSS
    React
    Shopify Templates
  • $33 hourly
    Well, i'm a Full Stack Developer experienced in building Electron Application and Google Chrome Extension. Full project management from start to finish.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Matplotlib
    Linux
    Electron
    pandas
    NumPy
    Redis
    MySQL
    Python
    PHP
    Google Chrome Extension
    D3.js
    TypeScript
    Node.js
    React
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