Upwork home
Sign up
Secondary

Hire the best JavaScript Developers in Chicago, IL

Check out JavaScript Developers in Chicago, IL with the skills you need for your next job.
Hire freelancers
Clients rate JavaScript developers
Rating is 4.7 out of 5.
4.7/5
based on 377 client reviews
  • $32 hourly

    • 5.0/5
    • (5 jobs)
    I am a designer with over 3 years of professional experience, starting with my previous experience in print and design consulting in the sign industry and other print shops where I interned. I recently transitioned to be a UX/UI Designer with a little over a year of working with clients in e-commerce, healthcare, and beauty services. Please message me for my portfolio link if you cannot find it on this page! I have experience using HTML, CSS3, and vanilla JavaScript, with knowledge of how to build and launch a website. When I have downtime, I am learning about web design or painting. I will project manage your brief from start to finish and aim for any deadlines given. I am open to more hours depending on my current availability and the project's scope. Communication is highly important for me to give you the best result so please stay in touch!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Microsoft Outlook
    Scheduling
    Adobe Photoshop
    HTML5
    Microsoft Office
    Data Entry
    Adobe Illustrator
    CorelDRAW
    CSS
  • $70 hourly

    • 5.0/5
    • (11 jobs)
    Hi! I'm a senior JavaScript developer. My main skill is React.js and I am frontend focused fullstack web developer. Frontend: JavaScript, TypeScript, React.js, Next.js, Gatsby.js, Vue.js, Angular, Bootstrap, Material UI (MUI), Styled components, Tailwind css, SCSS, Apexchart, Amchart, Highchart, D3.js, Wix, Wordpress Mobile: ReactNative, Flutter Backend: Node.js, Python/django, Express.js, Nest.js DataBase: MongoDB, SQL Cloud: AWS, GCP, Azure Other: Zoho, Contentful, Prisma, Prismic, Contentful, AI, ChatGPT Tools: Jira, Trello, Figma, Sendgrid, Stripe, Zepline, Vercel, Netlify, Heroku, Github, Gitlab, Bitbucket
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Decap CMS
    RESTful API
    Contentful
    styled-components
    SCSS
    Material UI
    Bootstrap
    TypeScript
    Gatsby.js
    Node.js
    React
  • $79 hourly

    • 5.0/5
    • (58 jobs)
    Does your company website look like it's "Straight Outta Disney Land" and Mickey Mouse is the CEO? Are you tired of: - Unprofessional website aeshtetics murdering your sales opportunities? - Your customers not being able to fill out the form on your site? - Ranking on the 2nd page of Google? - Slow and sluggish websites? - Unreliable freelancers? Time to put those things in your rearview mirror and look forward to Done For You profitable websites that convert on autopilot, printing money while you sleep. If you value aesthetics, AND you want to have a blazingly fast, technologically sound website, you're in the right place. Revenue-generating websites require speed, high Google rankings, and reputable aesthetics. Your competition is investing in its online presence, and you can't afford to lag behind. Others aren't investing in cheap templates built on Fiverr. Neither should you. Getting all of this together is hard, but it doesn't have to be. I've personally overseen and built over 3,500 websites throughout my 15-year career. Do you know how High the Cost of a Slow Website Speed is? Your website's slow performance is destroying your revenue and killing opportunities that could otherwise enhance your profit margins. Decreased customer satisfaction impacts your earnings but also harms your Google rankings, leading to a decline in traffic. This cascading effect means even more revenue lost for your business. In today’s digital world, sluggish performance doesn't just lose sales; it kills your bank account. The Frustration of Waiting Picture your customers waiting for pages to load, their growing frustration, and the opportunities lost as they turn to competitors. In the era of instant gratification, no one has the time to wait. Slow speeds, poor experiences, and declining Google rankings are eroding your credibility and undermining your marketing efforts. Let me help you Achieve High Performance My specialized website optimization transforms your site into a high-performance engine. Envision your website with lightning-fast load times, seamless navigation, and a user-centric design. I offer sophisticated SEO and a premium user experience, ensuring your site adheres to core web vitals and improves your Google rankings. Converting Clicks to Customers Beyond speed, I focus on conversion design and content. It's not just about a fast site; it's about creating a journey towards a conversion for your consumers. My work aims to leave a lasting impression, turning visitors into loyal customers. With strategic placement and compelling content, I guide your audience to make purchases, maximizing your return on investment. Every element, every word, is crafted to convert and compel, ensuring that your site isn't just visited but remembered and acted upon. Unlock Market Influence Reserved for the Big Dogs Expect more profits, happier clients, and a robust brand perception. Your clients will enjoy the speed and simplicity, making their buying decisions easier and boosting your sales. With my expertise and innovative solutions, I promise not just a faster site but a comprehensive digital transformation that elevates your brand and bolsters your bottom line. Your website will become a powerhouse of conversion and a testament to high performance, providing you with the competitive edge needed in today's market. Ready to take it to the next level? Hire me for the web design consultation. I will provide you with the opportunity to overview and help you grow.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Adobe Photoshop
    Google APIs
    Facebook Pixel Setup & Optimization
    AWS Systems Manager
    WordPress
    CSS
    Linux
    Ubuntu
    HTML
    WordPress Malware Removal
    Node.js
    Typography
    UX & UI
    jQuery
  • $75 hourly

    • 4.9/5
    • (98 jobs)
    Hello! Welcome to my profile! My name is Jason. I am a hard-working, reliable freelance web developer. I love being in this line of work because I am passionate about technology, design, and innovation. I like doing freelance work because it gives me the freedom to choose when and how often I work. I am Chicago-based, born and raised, and a native English speaker, which means quality communication during projects. WordPress is my niche, and I think it is a great solution as a Content Management System for website design and development. It is user friendly, while at the same time offering unlimited potential to build unique websites with custom design and features. Combining WordPress with my skills in design as well as several coding languages, such as HTML, CSS, and JavaScript, I offer exceptional web development services at an affordable price. I have recently added Gatsby.js to my toolkit, building several static sites that use WordPress as a Headless CMS. I separate myself from other freelancers on UpWork by being reliable and by communicating well with my clients. Since I am Chicago based, my normal work hours are 9-5 CST, Monday through Friday, although my schedule is flexible. I am always looking for new and challenging projects!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    WordPress e-Commerce
    WooCommerce
    Search Engine Optimization
    Web Development
    CSS
    Bootstrap
    WordPress
    HTML
    PHP
  • $120 hourly

    • 5.0/5
    • (94 jobs)
    I utilize AI tools without pride or shame for the purpose of rapid iteration where github copilot and chatGPT 4 are now the second set of arms and multiple brains I never had before, yet wanted, have over 15 years of experience as a Sr. Application Architect and Systems / Devops Enginner, have had the honor of architecting and building apps for corporate and government agencies using popular frameworks and CMS’. With that, I now have the honor of being a member of the Magento Certification Advisory Board and a Drupal core committer with over 20 years of Javascript development experience where I’ve also taught JS professionally at companies like AT&T with over 10 years of Node.js and 7+ years of React experience currently active with Next.js etc. now with 45 years of age as well as over 20 years of Linux and Windows linux command line experience; that said, I also have 10 years of experience with docker, continuous integration (DevOps) as well as infrastructure as code and as a service experience etc., plus virtual machine and container environment management via KVM and Virtual Box etc. as a full stack front and back end application and data engineer with mysql, MS Sql and nosql (json server and mongodb), corporate and government contract experience accordingly including, yet not limited to: Magento / Adobe Commerce: Implemented custom PHP Modules, block layouts, CSS, HTML & JS for the following Magento 1 & 2 projects; I am also a founding and current member of the Magento Certification Advisory Board: web.archive org/web/20150814060532/http:// magento. com/training/advisory-board ● www .kissusa.com M2 - hosted with Magento Commerce Cloud ● www .eventsource.com M2 - hosted with Magento Commerce Cloud ● www .seaguar.com M2 - hosted with AWS ● www .shop.drberg.com M2 - hosted with AWS ● www .exteriorsolutions.com - M2 - hosted with AWS ● www .centralcomputer.com - M2 - hosted with LiteSpeed ● www .jenniferjewelry.com - M1 Enterprise Drupal / Drupal Commerce: I've implemented custom PHP plugins, block layouts, CSS, HTML & JS for the following Drupal projects where the coolest Drupal project isn’t listed i.e. a 9 month contract at Fermi National Laboratory for the Department of Energy as well as being a core commiter as seen with the following google search i.e. “git commit drupal Sean Charles” : ● www .scotts.com (D8 - 10) ● www .ghirardelli.com - (D7) ● www .store.realtor.org - (D7) ● www .mauijim.com - (D6 -7) ● www .fooda.com - (D6 - 7) Woo Commerce & WP Engine: Implemented, Custom PHP Modules, block layout, CSS, HTML & JS for the following Woo Commerce projects: ● www .usatowl.com ● I utilize www .wpengine.com and pipeline deployments ● www .lilimoassociation.com ● www .thedelimagazine.com .NET: I’ve implemented custom code, layouts, CSS, HTML and JS for the following .NET projects and more: ● www .safedinar.com ● www .exteriorshutters.com JavaScript: Over 20 years experience with JavaScript ● Taught Javascript professionally in a classroom setting to employees of companies such as AT&T, Monster.Com, Fannie Mae & Freddie Mac as an instructor at www .trainingconnection.com ● JS Framework experience with: ● React ● Next.js ● Vue.js ● Node.js ● Angular ● Backbone ● Have a clear understanding of advanced principles such as ● Prototyping and Closures ● Typescript ● JSON ● Singletons ● Libraries and Library Creation with Closures ● XMLHttpRequests i.e. AJAX ● Front-end DOM Manipulation ● Events and Handlers HTML / CSS / SASS / Photoshop and UX Design Experience ● Cross Browser Compatibility through correct CSS practices ● Bootstrap / Tailwind ● Responsive Web Design with Media Queries ● Utilization of SASS Mixins and Compass ● Pixel Perfect Photoshop to HTML CSS ● Pixel Perfect Figma and Adobe XD to HTML CSS Microsoft Azure used when needed AWS: 10+ years experience ● Ec2 • Instance provisioning • Elastic IP management • EBS Volumes • AMI Image management • Security Groups • VPC Networking • Subnets ● RDS (database management) • Multiple Availability Zones • Read Replicas Custom DB configuration via Option Groups • Custom DB configuration via Option Groups • Automated Backups Database removal protection layer • Database removal protection layer ● Instance Provisioning • Cloud Formation ● ECS Ec2 Container Service (docker) • Highly available docker service clusters • Third party monitoring with Python keep alive scripting ● IAM user and service access management • Users • Permissions and Policies ● Elastic Search (ELK stack) • Pushing logs to ELK ● AWS API • Utilization of the api via command line, python and bash scripts ● Load Balancing • Implementation of ELB service • Configurations of Target Groups ● CI/CD • Integration with Ansible, Bash, Make and Jenkins ● DevOps: • AWS Code Deploy / Pipelines. Microsoft DevOps / Pipelines, Git I do not have a team, yet I'm hoping to join, lead or help grow yours
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Magento 2
    AWS Systems Manager
    Git
    PSD to HTML
    HTML5
    CSS 3
    PHP
    Sass
    Magento
  • $35 hourly

    • 4.6/5
    • (67 jobs)
    Greetings! I’m a qualified Full Stack Developer with a can-do business mindset. I have been providing high-quality services to my clients for 5 years in different niches such as Real Estate, Healthcare, Manufacturing, Information Technology (IT), Automotive and Food services. You must be wondering why should you hire me? So, here’s why! • I value my work which makes me value my clients in providing them high-quality professional & 100% satisfactory work. • My work ethics demand me to provide delivery on time to you. • I assure 100% money back guarantee if my work is not up to the mark. And as for my projects, I have been on board with clients on projects like E-commerce, UI/UX for Mobile and Web, CMS, and CRM Systems. In fact, in website development, I am skilled at; • Wordpress Development • E-commerce Development • Static Website Design & Development • Php and Custom Php Development • Magento Website • .Net Framework • Laravel • Drupal • Shopify I also provide my services in Mobile App/Games Design and Development such as, • IOS • Android
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    ERP Software
    CRM Development
    API Development
    Web Application
    PSD to WordPress
    Magento
    React Native
    Java
    WordPress
    Webflow
    ASP.NET MVC
    Shopify
    Mobile App Development
  • $40 hourly

    • 5.0/5
    • (65 jobs)
    Developing authoring tools for interactive books and tutorials in Physics and Mathematics. Web user interactive simulations in Mathematics and Physics. Developing game like scenarios to guide the reader through tutorials or educational and puzzle games. Technologies used are BabylonJS, WebGL, CSS, SVG, Canvas, JavaScript, and MathJax. Developed Whirlio.com and Verizon FIOS promotional game. Working on project "Interactive Illustrations for Newton’s Principia".
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    HTML5 Canvas
    Data Visualization
    Highcharts
    3D Animation
    2D Animation
    Content Writing
    Physics
  • $60 hourly

    • 4.9/5
    • (13 jobs)
    Software engineer with 7+ years of experience in IT. Always eager to learn and improve skills, never afraid of trying new technologies and facing any challenges. Ability to work both: independently and as part of a team. Good in self-management, communication, meeting deadlines, and prioritizing tasks scope. If you are looking for someone who can lead and help the dev team get out of trouble and deliver better software then you are in the right place. Main domain areas: - E-commerce - Healthcare - Entertainment - Education - Recruiting Currently, my main focus is mobile development (native and cross-platform) but I also have broad expertise in web development (backend, frontend, REST and GraphQL APIs, microservices). Profound knowledge in these fields helps me to create valuable solutions for teams and clients Im working with. Feel free to contact me for any possible cooperation.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Entertainment
    Healthcare
    Education
    Ecommerce
    Web Development
    Software Architecture & Design
    Flutter
    PHP
    Android
    iOS
    Mobile App Improvement
    Laravel
    macOS
  • $40 hourly

    • 5.0/5
    • (23 jobs)
    - WordPress websites / WordPress themes development with ACF from PSD; - WP website development using builders (Beaver, Elementor, Divi, WPBakery); - implementing new features and functionality; - managing all technical aspects of the CMS; - work with databases / SQL (restore corrupted DB, migrate Joomla website to WordPress) - website speed & performance optimization; - implementing SEO; Skills • Wordpress, Joomla, Prestashop; • PHP, JavaScript, JQuery; • HTML5, CSS3, SCSS; • Bootstrap, flexbox; • SQL, PHPMyAdmin, SQL Management Studio; • Figma, Illustrator, Photoshop (15.01.16 - 15.06.16 - ArtClub ATC certificate in Digital Art); • CRM systems (Zoho, Freshdesk, Jira, Asana); • Git, SVN; • NPM, Webpack • Have experience with React and Laravel;
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    PHP
    CSS 3
    WordPress
    SQL
    Bootstrap
    Figma
    React Native
    Laravel
    Adobe Photoshop
  • $70 hourly

    • 5.0/5
    • (12 jobs)
    Are you dissatisfied with your company's marketing performance? Unsure of why you're not getting the results you want online? Today, internet users are more demanding and impatient than ever. They wanna find what they want quickly and seamlessly. If not, they will go somewhere else. Dan has 8+ years in the digital marketing industry working with tech startups, venture capital firm, global digital agencies, ecommerce brands, and more. Throughout the years, the biggest mistake he saw companies make was that their website was slow, confusing or just outright boring. They would spend $10,000-$500,000 per year on ads but settle for a mediocre website for years—and wonder why the ads don't have a better ROI. According to research done by Adobe, 38% of people will stop engaging with a website if the content/layout is unattractive. That is more than a third of your potential customers leaving purely because of lack of good design. How much growth in leads or revenue could you be missing out on? Take your business and its marketing to the next level by investing in a beautiful website or landing page that brings your brand to life and piques your audience's interest. Dan helps companies succeed with the following needs: • Web Design - To showcase your product or service online in an authentic and engaging way. • Mobile/Responsive Design - To make sure the website looks great on phones and tablets. • Wireframing - To organize and lay out the content before styling. • Prototyping - To visualize and finalize the experience before the build out. • Web Development - To construct the website as planned on a secure platform. • Branding / Corporate Identity Creation - To establish how your company will be recognized. • Style & Color Guideline Creation - To define how your company will be perceived. • Landing Page Design - To create a focused web page that best demonstrates your campaign effort.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Web Design
    CSS
    Prototyping
    Branding
    Webflow
    UX & UI
    Figma
    Landing Page
    Adobe Lightroom
    Mobile App Design
    User Experience Design
  • $40 hourly

    • 5.0/5
    • (4 jobs)
    I am a Software Developer with a focus on data processes. Proficient in Web Development, Data Science, Web Scraping, and DevOps, I craft robust applications and optimize workflows for seamless data management. I love exploring diverse technologies. From developing full-stack web applications to contributing to open-source projects, I’m always eager to learn and push my expertise. I can review your code to improve its readability and usability and I can write tests to ensure your software runs correctly. I am a quick learner and a reliable worker. Collaborative and open to ideas, I value teamwork and communication. Let’s connect and embark on a journey of data-driven success together. Summary of skills and experiences: Software Development: - Full-Stack Development: Proficient in building full-stack web applications. - Backend: Experienced in building APIs, data pipelines, and automated solutions. - Frontend: Familiar with frontend technologies for creating interactive user interfaces. Machine Learning and Data Science: - Machine Learning: Experienced in machine learning concepts, including model training and evaluation. - Data Analysis: Proficient in analyzing data, deriving insights, and making data-driven decisions. - Data Processing: Skilled in processing and transforming data using various tools and frameworks. - Jupyter Notebooks: Familiar with using Jupyter notebooks for interactive data analysis. Development Tools and Practices: - Git & GitHub: Proficient in version control and collaborative development using Git and GitHub. - DevOps: Able to use GitHub Actions and similar tools to automate delivery and integration of software. - Testing: Skilled in writing tests, including unit test, integration tests, and end-to-end tests. - Airflow: Experienced in building and scheduling data pipelines using Apache Airflow. - Cloud Development: Skilled in defining and managing cloud infrastructure on all major cloud providers using tools like AWS CloudFormation and CDK. - Terraform: Able to define infrastructure and set up repeatable deployments. - Docker: Familiar with containerization using Docker for efficient deployment. Programming Languages and Frameworks: - Python: Proficient in Python programming in the following areas: web development, data science, general scripting, and web scraping. - Java: Experienced in Java development, including Spring Boot for building robust applications. - SQL: Skilled in writing SQL queries and working with databases in various SQL dialects. - Machine Learning: Familiar with machine learning libraries including SciKit Learn for building and training models. - Pandas: Proficient in data manipulation and analysis using Pandas and numpy. - AWS: Experienced in various Amazon Web Services, including EC2, S3, CloudFormation, Redshift, Lambda, Glue, and Athena. - GCP: Knowledgeable in Google Cloud Platform, including Cloud VPS, Cloud DNS, Cloud Functions for serverless computing. - APIs: Experienced in creating and consuming APIs to integrate external services and data sources. Contribution to Open Source: - Contributed to the Komiser project by adding support for Linode Object Storage Bucket. Volunteer Experience: - exercism.io - Coding Mentor - Guided learners in Python coding exercises and practical applications.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    HTML
    CSS
    Stripe
    SQL Programming
    Python
    pandas
  • $95 hourly

    • 4.9/5
    • (17 jobs)
    I'm a certified solutions architect for Amazon Web Services with experience in full-stack software development. My typical stack for web development is a React.js front-end paired with a node.js backend hosted on AWS. For mobile development my preferred stack is React-Native but I have experience in native development with Swift for iOS and native Android development in Java. I'd love to help your project at any stage, whether it's UX design, software development, API integration, data migration, or even just bug fixes & documentation. Whether you've got a new idea for an app or need a consult for a redesign on one of your micro-service containers, let me know how I can assist!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Blockchain Development
    API Development
    Software Architecture & Design
    Ethereum
    App Development
    CI/CD
    Serverless Stack
    DevOps
    Firebase
    Amazon Web Services
    React Native
    Database
    React
    TypeScript
  • $65 hourly

    • 5.0/5
    • (3 jobs)
    I'm experienced in creating automated and actionable dashboards by using Google Sheets, Scripts, and Looker. I can help you visualize data and put together cohesive presentations to make sound decisions Hire me for: -Data Entry -Google Sheet Automation -Google Sheet Dashboards -Google Drive Optimization -Looker Dashboards -Google Slides Presentations -Powerpoint Presentations
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Presentation Design
    Microsoft Excel
    Tableau
    Google Slides
    Project Management
    Looker
    Google Sheets
    Microsoft PowerPoint
    SQL
    Figma
  • $80 hourly

    • 5.0/5
    • (19 jobs)
    ( ( ( TOP RATED ) ) ) I'm a newcomer to Upwork with over seven years of professional video editing experience. Very skilled in After Effects, Premiere & Blender. I have experience editing ✅ video bumpers/introductions ✅ music videos ✅ complex masking procedures, and have been employed as an editor by several 🌟 extremely popular🌟 Youtube channels in a professional capacity. The 🏆 client review 🏆 below (which you will find in my reviews section) describes the quality of work and value that you can expect when working with me: "Elias went well beyond my expectations to do an excellent and thorough job, putting great care into everything he did. I will work with him again in the future."
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Screencasting Video
    2D Animation
    Animation
    ScreenFlow
    Video Editing
    3D Animation
    Logic Pro
    Video Commercial
    Video Intro & Outro
    Adobe Premiere Pro
    Adobe Photoshop
    Blender
    Adobe After Effects
  • $35 hourly

    • 5.0/5
    • (11 jobs)
    As a Junior Web Developer, I have over 4 years of progressive experience in the conceptualization and execution of comprehensive web sites branding and outreach initiatives for non-profits organizations and start-ups firms. Over the course of my career, I’ve worked closely with clients to optimize digital engagement and communications efforts which led to increases in audience reach. I create user-friendly fillable forms where a user can type text in, select options from drop-downs, check boxes, press buttons, etc. For more complicated conditional behavior, additional automation, and complex calculation, I use JotForm and Cognito Forms for clients with the need for easy maintenance. Being Bilingual, I had the chance to develop bilingual websites in WordPress & Squarespace as part of engaging with a more broad audience. I'm a fast learner who enjoys a challenge. My communication skills and ability to hit deadlines are 10/10. I like to say "I'm not finished until you're happy". And I mean it. My website is MarcosZapata.com and it features what I am capable of designing. I look forward to working with you soon!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Google Workspace Administration
    Jotform
    Web Design
    HTML
    CSS
    Squarespace
  • $65 hourly

    • 5.0/5
    • (9 jobs)
    The Glory of Ukraine! Welcome, community. Let's get down to business? Let's see the numbers: 🔹5+ years of experience as a Front-End/Fullstack M(P)ERN engineer. 🔹Next.js for more than 5 years of experience and I really enjoy working with this framework because of SSR, SEO, and other features that are not built-in in React.js. 🔹Material UI, Ant Design, TailwindCSS. For rapid development quite often we need to use these UI libs besides clean HTML/CSS. 🔹PostgreSQL / Firebase / MySQL / MongoDB / AWS S3 🔹HTML5 / CSS3 / ES6. 🔹Expert knowledge in GitHub/GitLab/Bitbucket. 🔹Figma / FigJam / Adobe XD / Zeplin / Invision - familiar with all the design managers. 🔹Slack / Jira / Click UP / Trello - familiar with all these work messengers and tasks managers. Past experience: ✅ 5+ Years of commercial experience in web development projects. ✅ More than 12 commercial projects all of which went into production. ✅ Successfully delivered multiple projects, demonstrating expertise in both front-end and back-end development. ✅ Strong knowledge and deep experience with everything related to JavaScript. ✅ Expert in TypeScript. I consider it's absolutely must-have technology to be used both on the fronted and backend. ⚛︎ A thorough understanding of the React.js library and its core principles. ⚛︎ Used Redux library in all previous projects. Thanks to it familiar with Redux-Thunk/Redux-Saga/Redux-Toolkit/Redux-Observable. Additional technical background: ✔️RESTAPi's integration/ RESTFULLAPI's integration (fetch)/ Websocket API's integration(socket.io)/ jQuerry ✔️GraphQl API's technology (Apollo,Relay) - to my mind very convenient technology and fast. ✔️Built efficient server-side applications utilizing technologies such as Node.js and Nestjs. ✔️Troubleshot and debugged complex issues, employing strong problem-solving and analytical skills. Talking about myself I'm a freelancer with conversational English and I have previous experience working in English spoken teams. I can handle daily calls and meetings with a team if they are within my working hours. By hiring me for a project, you get a reliable partner who is ready to provide a free rough estimate of how long it will take to translate your design into high-quality code. I prefer to work with the latest ES6 standards and work with functional components, not with class-based components. A functional component is commonly better because there is no need to create an instance of the class in JS/TS, so React will simply call the function and that's it (in terms of performance). Besides that, there is also Error Boundaries functionality which is not available for functional components yet (in terms of capabilities). All other stuff is pretty much reproducible by each other and the choice depends on the preferences of the developer or project requirements and/or code guidelines.
 I shared with you my strengths now you click Invite in your upper right corner of the monitor so that I can help you evaluate your project and give you my feedback. Feel free to contact me, best regards all!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    MongoDB
    Socket.io
    GraphQL
    Storybook
    Website
    TypeScript
    Node.js
    Material UI
    HTML5
    React Bootstrap
    Git
    React
    Redux
    Next.js
  • $70 hourly

    • 5.0/5
    • (3 jobs)
    I’m a software engineer with professional experience in full stack web development. I also have worked on mobile applications for personal projects. I can build a website or app to fit your needs.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    SQL
    Docker
    Electron
    ExpressJS
    Next.js
    Django
    GraphQL
    Swift
    TypeScript
    Java
    Python
    React
    Node.js
    Angular
    RESTful Architecture
  • $40 hourly

    • 5.0/5
    • (1 job)
    My name is Colin Daniels. I'm a Chicago-based Full Stack Web and Software Developer with 4+ years of experience. Adept in utilizing modern software and frameworks. Proficient in creating visually stunning web applications from scratch as well as creating professional API's used today by hundreds of companies. At eCommet LLC, I created an eCommerce application from the ground up. A few tasks I accomplished were:    • Using UX principles to create a case study    • Implementing the design in modern UI & visually stunning CSS and framework components    • Creating an admin page to track shipments, inventory and site analytics    • Maximizing the performance of the site to become interactive in less than 2 seconds upon first load    • Using testing tools such as Cypress to test and ensure consistent uptime    • Creating secure authentication utilizing JWT tokens and cryptography for user accounts    • Creating algorithms based on live sales data to generate expected sales reports. (If you'd like to see the final product let me know). I also have extensive experience with creating API's and NodeJS. I created an API that would scrape ebay.com and gather data based on a search query and return data such as the average selling price of the query along with data about each individual item. This API handles over 100,000 requests a day and is utilized by over 100 companies. My skills include but are not limited to: • HTML/CSS (4 years) • Vue.js (4 years) • Figma (2 years) • Node.js (4 years) • Python (5 years) • Web Scraping (4 years) • API Interactions (4 years) • Git (5 years) • JavaScript (4 years) • MongoDB (4 years) • UX & UI (3 years) • React (1 year) • Angular (1 year) • Cypress (1 year) • Express.js (4 years) • SQL (2 years) If you have any questions at anything you can message me at any time. Thank you for your consideration, Colin Daniels.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    UX & UI
    React
    Web Scraping
    Figma
    HTML
    Node.js
    Git
    MongoDB
    CSS
    Vue.js
    API Development
    SQL
    Python
  • $35 hourly

    • 5.0/5
    • (1 job)
    Ever since I was a little kid, software development has been my passion. I still remember sitting in front of TV; watching the Social Network movie and becoming so intrigued by how lines of code can genuinely make a huge impact and even change the world. Two days later, I taught myself HTML and CSS and developed my first website at the age of 13. I was insatiable. This passion carried me to the point where I taught myself how to make IOS applications. I created over 800 apps until having my first successfully charted IOS application. After that, it was just a process of rinsing and repeating. Software Development will be a passion I'll forever cherish. There's undoubtedly yet more to learn, yet more problems to solve, and yet more to build. And for this, I am forever grateful I have the talent to do so. Specialties: Languages: Swift, JavaScript, Objective-C, HTML, CSS, Bootstrap
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Product Development
    Bootstrap
    iOS Development
    Software Development
    Desktop Application
    iOS
    CSS 3
    HTML
    CSS
  • $50 hourly

    • 5.0/5
    • (3 jobs)
    I am a full stack developer with professional experiences building enterprise applications for a large financial institution as well as a small crypto start up. I enjoy learning new things and figuring out simple solutions to complex problems. - Will communicate regularly with you on the progress of work from start to finish so you will not have to guess on how things are going - Language agnostic but am most comfortable in Golang for backend development and various javascript libraries for the front end - Writing well documented, tested code is something that is very important to me
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Agile Software Development
    Data Structures
    Software Debugging
    Ethereum
    Blockchain
    Engineering & Architecture
    Blockchain Architecture
    API Development
    Golang
    Docker
    RESTful API
  • $70 hourly

    • 5.0/5
    • (1 job)
    I want help developer first companies build awesome documentation. I am the founder at Dev-Docs, which will be a platform to make docs painless, but also help folks build it as well.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    HTML
    API Development
    Cloud Computing
    CSS 3
    API
  • $150 hourly

    • 5.0/5
    • (1 job)
    Experienced software architect with many years of experience working in cloud architectures. Specialist in bootstrapping companies from 0-10. Proven track record of challenging the status quo to bring the latest engineering best practices to bear on new and legacy problems. Modern engineering manager with proven leadership skills to mentor emerging engineering talent while also developing culture and teams. * Cloud Computing Architecture (AWS Certified) * Cross-Functional Teams
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Data Engineering
    Spring Boot
    PostgreSQL
    AWS Lambda
    Mongoose
    Event-Driven Programming
    SQL
    AWS Amplify
    Java
    AWS IoT Core
    Twilio
    TypeScript
    Python
  • $175 hourly

    • 5.0/5
    • (1 job)
    Experienced CTO, software developer and architect with a demonstrated history of architecting and deploying fullstack Ruby on Rails (RoR) software, including LMS and SaaS products that have dedicated APIs for native clients consumed at scale. I’ve been at it since Rails 3 and personally migrated apps from Rails 4 to 7. Rails performance — faster than 300ms for a fullstack response from server; less than 1s to paint clientside — is a passion of mine, as is building software that works and satisfies constraints. If you want software that is performant while accomplishing business goals — I’m probably a good choice. If you’re looking for websockets (the Hotwired stack, mostly in RoR), background jobs (Redis / Sidekiq) help with frontend JavaScript (yes, I spent a few years working in React) or more general help designing web products that accomplish your broader goals (e.g., you want your pages to load faster; I’d help you make some of your content load asynchronously to do that). A second skillset I have relates specifically to analytics. I have considerable experience building out data tracking with various accompanying metrics and dashboards in Ruby on Rails, but I also have considerable experience with data analysis (R; Python; PyTorch; PySpark) and familiarity with with bigger data tooling and analytics (e.g., Hadoop; Pig; Spark; DataBricks; Snowflake) and specialized reinforcement learning (RLlib). Re: deployment — I usually deploy on Heroku because I have a standard Continuous Integration (CI) / Continuous Deployment (CD) playbook. That said, I have deployed software in AWS and run super intense compute processes in Azure and Google Cloud Platform (GCP). So while I focus on shipping software that works, you can expect all code I oversee to come with appropriate tests. And finally, concerning data structures and databases for production applications ... I don’t do NoSqL — I just think it’s never the right choice. Any standard relational database — e.g., PostgreSQL (best), MySQL (acceptable) — is fine. I’ve written a bunch of raw SQL — from custom procs and functions to standard INSERT commands and used a variety of add-on modules for natural language features, UUID generation, etc. And yes, I’ve migrated and updated countless databases, and I would be happy to tag which indices your database should add or remove for performance. If you want to shard your database or created read-only versions for performance, I’m happy to help you develop that strategy.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Ruby on Rails Stack
    Amazon S3
    A/B Testing
    R
    Heroku
    Technical Project Management
    Analytics
    React
    PostgreSQL
    Ruby
    Ruby on Rails
    Web Application
    Web Development
    Python
  • $100 hourly

    • 5.0/5
    • (13 jobs)
    I am digital analytics and tagging expert who has 6+ years of professional experience working at a fast-paced agency serving Fortune 500 clients. I have extensive experience freelancing and have been named a top consultant by Upwork earning a Top-Rated badge. Google Analytics (GA4) Expert, helping companies transition from Universal Analytics to the new GA4. If you have an existing setup, I can conduct an audit to give you peace of mind that everything is correct and instill trust in your marketing data. Google Tag Manager: Tag Management is complicated and it can be difficult to manage your analytics or media tags. I can help cleanup existing setups or implement best in class measurement to help propel your understanding of your website or mobile app. Facebook, TikTok, and Instagram Pixel Setup: running effective ad campaigns begins with having proper tracking in place to measure the impact on your business. Maximize your ROAS today by setting up a standard or custom website pixel. In addition, I have expertise in Google Ads floodlight and conversion tracking. I work with both agencies and businesses directly and would love to partner with you to grow your business. Cookies Going Away? Do no worry as I am also an expert in server-side tracking which will help you maintain your measurement abilities even if Google deprecates 3rd party cookies. I offer this service both for TikTok and Facebook’s CAPI to ensure your business has the data it needs. CRO Services: Is your business struggling to get leads or orders? If this sounds like your situation, you may be a great fit for a conversion rate optimization project. I have led $1M conversion rate optimizations for some of the largest companies in the US and can apply this same knowledge of UX and UI to drive more impact for your business. For more information send me a message, I am always happy to chat.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Optimizely
    Monetate
    WordPress Landing Page
    CSS
    Test Results & Analysis
    Wix
    WordPress
    Google Optimize
    Adobe Analytics
    Adobe Target
    HTML
    Google Analytics
    A/B Testing
    Google Tag Manager
  • $35 hourly

    • 5.0/5
    • (1 job)
    BS in Computer Science from Northwestern University. Experience implementing and deploying cutting-edge RL, NLP, and Time-Series prediction models. All around data science skillset with expertise in leveraging qualitative analysis and data driven decision making to optimize and automate business processes.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Microsoft Azure
    Amazon Web Services
    Database Management System
    R
    SQL
    Python
  • $95 hourly

    • 5.0/5
    • (26 jobs)
    — Among the Top 1% of Upwork Freelancers // Top Rated Plus Freelancer & Expert Vetted Freelancer ✅ US Based Freelance Full Stack and DevOps Engineering Professional ✅ DevOps ✅ Kubernetes (Amazon EKS and Google GKE) ✅ Infrastructure as Code (IaC) (Terraform, AWS CDK, Cloudformation) ✅ Cloud Engineering (AWS, GCP) ✅ CI/CD Pipelines (Github Actions, Gitlab CI, Jenkins) ✅ Database Design (SQL/NoSQL) ✅ Distributed Computing (Microservices, Event Driven Architecture) ✅ Apache Kafka, RabbitMQ Are you looking for an engineer you can count on to deliver? I have helped companies of all sizes leverage technology to drive real business value. Recent Testimonials: "[...] Elliott is an expert and can figure anything out. He fixed a memory leak that had been plaguing us for weeks causing periodic downtime and costing us hours and $$ in aws servers since we needed to scale up constantly." - Soleretriever "After going through numerous front end and back end developers that took 3 years and were jerked around by other firms with nothing to show for it, we found Elliott. Thank goodness we did his attention to detail and his communication are second to none." - Mike T. [keywords: AWS (Amazon Web Services), GCP (Google Cloud Platform), Azure, Kotlin, Go, Kinesis, Lambda, DynamoDB, Apache Kafka, Node.js, GraphQL, REST, Kubernetes, Typescript, Terraform, Ansible, Docker]
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Amazon DynamoDB
    Apache Kafka
    Infrastructure as Code
    Functional Programming
    React
    Cloud Computing
    TypeScript
    Serverless Computing
    DevOps
    CI/CD
    Node.js
    Terraform
    Amazon Web Services
    Kubernetes
    Google Cloud Platform
  • $150 hourly

    • 5.0/5
    • (10 jobs)
    I have over 8 years of experience with Google Analytics and related products. With strong expertise in Google Analytics, Google Tag Manager, Google Data Studio, and Google Optimize, I can handle any kind of implementation, configuration or data layer management you need help with. My experience includes: Google Analytics Strategy & Implementation - Data collection audits & tag troubleshooting - Google Analytics setup and configuration, including GA4, Enhanced Ecommerce, Firebase and Server Side GTM - Data layer implementation and best practice consulting, including for custom events and attributes - Tracking pixel implementation from 3rd-party tools such as Facebook and TikTok Data Analysis & Dashboarding - Performance audits & insights - Custom dashboard construction using Google Data Studio, including the incorporation of data from multiple sources - Configuring event and journey funnels Conversion Optimization & A/B Testing - Optimization strategy consulting - A/B test planning and configuration using Google Optimize - Test result analysis, including statistical significance reporting My background is in eCommerce and Site Search, so any other needs you have related to eCommerce implementation or strategy I will also be able to assist with. Native English speaker, US based (Central time).
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Analytics
    Web Analytics
    Dashboard
    Looker Studio
    Adobe Analytics
    Statistics
    Data Analysis
    Google Optimize
    Google Tag Manager
    Google Analytics
    A/B Testing
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job (it’s free)

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a JavaScript Developer near Chicago, IL on Upwork?

You can hire a JavaScript Developer near Chicago, IL on Upwork in four simple steps:

  • Create a job post tailored to your JavaScript Developer project scope. We’ll walk you through the process step by step.
  • Browse top JavaScript Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top JavaScript Developer profiles and interview.
  • Hire the right JavaScript Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a JavaScript Developer?

Rates charged by JavaScript Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a JavaScript Developer near Chicago, IL on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance JavaScript Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream JavaScript Developer team you need to succeed.

Can I hire a JavaScript Developer near Chicago, IL within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive JavaScript Developer proposals within 24 hours of posting a job description.

Looking to hire for long-term or full-time assignments? See how Full-time hiring on Upwork simplifies the process.