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Hire the best JavaScript Developers in Sumy, UA

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4.8/5
based on 9,782 client reviews
  • $40 hourly

    • 5.0/5
    • (4 jobs)
    𝗣𝗿𝗼𝘃𝗲𝗻 𝟭𝟱+ 𝗬𝗲𝗮𝗿 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱 𝗶𝗻 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗶𝗻𝗴 𝗥𝗼𝗯𝘂𝘀𝘁 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 I'm a seasoned Full Stack Developer with a passion for crafting exceptional digital experiences. My extensive skill set allows me to seamlessly navigate both frontend and backend development, ensuring optimal performance and user satisfaction. 𝗖𝗼𝗿𝗲 𝗖𝗼𝗺𝗽𝗲𝘁𝗲𝗻𝗰𝗶𝗲𝘀: • 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: HTML5, CSS3 (including preprocessors like SASS), JavaScript (frameworks like React.js, Vue.js, Angular), Bootstrap, Chart.js, jQuery • 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: PHP (frameworks like Laravel, CodeIgniter, Symfony), Python (Django, Flask), Node.js (Express) • 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: WordPress, Yii2 • 𝗣𝗮𝗰𝗸𝗮𝗴𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: NPM, Composer • 𝗔𝗣𝗜𝘀 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: REST API, Figma, Materialize • 𝗖𝗹𝗼𝘂𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: AWS Lambda, Azure SQL Database • 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MongoDB, Redis, Microsoft SQL Server, PostgreSQL, MariaDB, MySQL, SQLite • 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁: Docker, Vagrant, RabbitMQ, AWS SQS, AWS SNS, Heroku, OpenShift • 𝗦𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 & 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: Elasticsearch, Database Profiling, Code Profiling, Microservices • 𝗩𝗲𝗿𝘀𝗶𝗼𝗻 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Git, SVN, Jenkins • 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴: Selenium, ESLint, Sonar • 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗧𝗼𝗼𝗹𝘀: Vim, webpack, IntelliJ IDEA, Postman, Fiddler • 𝗖𝗼𝗺𝗺𝗮𝗻𝗱 𝗟𝗶𝗻𝗲: Zsh, Bash, csh, PowerShell • 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: Android Development, Lodash, Ionic, Vuex, Redux, GraphQL, OAuth, Agile Methodologies (Scrum, Kanban), Page Object Pattern, E2E Testing, AWS (S3, EC2, LogWatch, MediaConvert, Step functions, Lambda functions, AWS CLI) 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿! I thrive in collaborative environments and am eager to tackle challenging projects. My focus is on delivering high-quality, efficient, and scalable solutions. 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗻𝗲𝗲𝗱𝘀? 𝗟𝗲𝘁'𝘀 𝗯𝗿𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝘄𝗲𝗯 𝘃𝗶𝘀𝗶𝗼𝗻 𝘁𝗼 𝗹𝗶𝗳𝗲!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Full-Stack Development
    CSS
    HTML
    Laravel
    PHP
    Next.js
    React
    Vue.js
    Angular
    Django
    Python
  • $35 hourly

    • 5.0/5
    • (3 jobs)
    Hello, I am a passionate full stack developer specializing in creating dynamic, high-performance web applications. With over six years of experience, I have honed my skills to turn ideas into reality using WordPress, React.js, Next.js, MongoDB, Shopify and Node.js. Technical Skills - Front-End: - React.js for building interactive UIs. - WordPress. - Shopify - JavaScript (ES6+), HTML5, CSS3 for responsive design. - Back-End: - Node.js and Express.js for scalable server-side applications. - Database Management: - MongoDB for non-relational databases. - Mongoose for schema modeling. - State Management: - Redux, Context API for state management. - Styling Libraries: - Styled Components, Sass, Bootstrap for modern, consistent styling. Best regards,
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    MongoDB
    TypeScript
    Bootstrap
    Material UI
    Tailwind CSS
    PHP
    CSS
    HTML
    ExpressJS
    MERN Stack
    Node.js
    Next.js
    React
  • $40 hourly

    • 5.0/5
    • (29 jobs)
    Product quality and on-time delivery are the keys to me, so I build high-quality web apps with great performance. I have strong skills in Node.js, Next.js, Ruby on Rails, also in-depth knowledge of front-end technologies, such as React.js, Angular.js, Vue.js, and hybrid mobile development with React Native. My #1 goal is to meet your business needs and create successful projects. AI skills: AI Integration, OpenAI API, GPT-3, GPT-4, AI Chatbot Development, Machine Learning, Natural Language Processing (NLP), AI Automation, AI-Powered Web Apps, Data Analysis with AI, AI-driven APIs, AI-based Personalization. My team and I are offering custom web development services for clients around the world. We’ve fulfilled over 50 startups spanning multiple industries: - Healthcare - Education - eCommerce, - Marketplace, etc. We have successfully completed numerous projects involving API integrations, custom web development, and automation solutions, AI chatbots One of my strong points is excellent communication. And it helps me to build an effective working process, which consists of: 1. Firstly, I collect all the data about your project and build the prototypes based on your project needs. 2. Secondly, I define what technology will be the best choice for your project and prepare the estimation. 3. On the next step, I divide the development process into several sprints following Lean Principles and the best Agile Methodologies. I’m closely familiar with JIRA and Trello. 4. After, we start the development process. The most important thing for me is to provide daily communication to get feedback and plan further steps. 5. I want to be sure that I deliver the only high-quality product. That’s why testing is one of the key points in my work. Contact me to get a free consultation. I’ll be glad to learn more about your project. Additional Expertise: HTML5, CSS3, Sass, Scss, Responsive Web Design, Cross-Browser Compatibility, Web Accessibility, SEO Optimization, Frontend Architecture, Query, Angular, Vue.js, Ember.js, Web Components, Progressive Web Apps (PWA), Single Page Applications (SPA), Server Side Rendering (SSR), Client Side Rendering (CSR), API Integration, GraphQL, RESTful APIs, Web Performance Optimization, Browser DevTools, Git, GitHub, Webpack, Gulp, npm, yarn, Visual Studio Code, Sublime Text, Atom, Responsive Images, Lazy Loading Images, Code Splitting, Error Handling, Debugging, Agile Methodologies, Scrum, Kanban, Continuous Integration and Deployment (CI/CD)
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Web Scraping
    AI App Development
    AI Chatbot
    Stripe
    API Integration
    Machine Learning
    Artificial Intelligence
    AWS Lambda
    ChatGPT
    Amazon Web Services
    React Native
    Node.js
    Mobile App Development
    React
  • $34 hourly

    • 4.7/5
    • (10 jobs)
    Hi there! I'm a dedicated JavaScript developer with a passion for crafting dynamic and innovative web applications. With over 8 years of hands-on experience in the field. At this moment my favorite technologies are TypeScript, React, React Native, Node.js, Express, Postgress. And I like it. I try to learn something new about JS every day, that helps me to create awesome and good quality web and mobile apps.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    AJAX
    PostgreSQL
    NestJS
    TypeScript
    Redux
    React Native
    React
    Node.js
    HTML5
    Sass
  • $35 hourly

    • 4.9/5
    • (31 jobs)
    Top-rated Upwork certified Full-stack 5 star well-experienced developer, working from Ukraine 🇺🇦❤️ for 10 years. My responsibilities: ✅ Strong JavaScript development skills (TypeScript, ES6), React.js, React Native ✅ Strong experience with Node.js ✅ Expertise in MongoDB / NoSQL databases ✅ Strong object-oriented programming and design skills ✅ Experience with RESTful web services ✅Ability to solve problems independently ✅ Outstanding teamwork and communication skills ✅ Understanding of modern Mobile technologies ✅ Ability to quickly learn new technologies Skills & Expertise: ✅ React Native (TypeScript) ✅ Node JS (Express / Nest) ✅ MongoDB / MySQL / Firebase ✅ Third-Party API integrations Be sure, I'll provide you with: ✅ Clean, bug-free and highly structured source code, check please my GitHub ✅ Regular report of project status with relevant deliverable Looks like I'm a superman? I'll let you in my secret: I am a part of Kit Global team, actually, I am CEO of mobile development company, and in the past a very strong back-end dev. We want your story to be a successful one, so we develop solutions that help our clients' businesses to grow. With exposure to multiple industry verticals, we enjoy working on innovative challenges and amend our working process to cater to your expectations. However, we only accept projects that we can handle and never waste time for trial and error process development. I have a strong grip over developing these below-listed domain's app: ✅ E-Commerce Apps ✅ Social Networking Apps ✅ Taxi Apps ✅ Chat & Dating Apps ✅ E- Learning App ✅ Health & Fitness Apps ✅ Food Delivery Apps ✅ Photo Editing & Sharing Apps ✅ Travel Apps ✅ Music & Video Player Apps ✅Telemedicine As a bonus, I offer you: ✅Q/A testing, application deployment ✅Free consulting and support I believe that communication is the key to a successful project, so please let me know a time to discuss that works best for you!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Hybrid App Development
    API
    Android
    Android App Development
    In-App Purchases
    iOS Development
    Mobile App Development
    React Native
    Firebase
    Back-End Development
    Front-End Development
    MongoDB
    TypeScript
    React
    Node.js
  • $25 hourly

    • 5.0/5
    • (2 jobs)
    ⛔𝔹𝕖 𝕔𝕒𝕣𝕖𝕗𝕦𝕝⛔ℍ𝕖𝕣𝕖 𝕪𝕠𝕦 𝕨𝕚𝕝𝕝 𝕘𝕖𝕥 𝕒 𝕣𝕖𝕝𝕚𝕒𝕓𝕝𝕖 𝕒𝕟𝕕 𝕙𝕚𝕘𝕙-𝕢𝕦𝕒𝕝𝕚𝕥𝕪 𝕓𝕒𝕔𝕜𝕖𝕟𝕕👇 Hello and welcome to my profile! 👋 I’m an experienced Full Stack Developer with over 7 years of expertise in crafting mobile and web applications that are both scalable and efficient. My specialization lies in leveraging Node.js and React.js to deliver robust server-side systems and cutting-edge, user-friendly interfaces. Throughout my career, I’ve developed solutions ranging from small, feature-rich mobile applications to large-scale enterprise systems. My technical expertise is extensive and versatile. I excel in: 📝Building high-performance back-end systems using Node.js and Express. 📝Developing dynamic and interactive front-end applications with React.js. 📝Creating mobile applications for both iOS and Android platforms. 📝Designing and implementing Progressive Web Applications (PWAs) for seamless user experiences. 📝Integrating various APIs to enhance application functionality. 📝Managing databases with technologies such as MongoDB and PostgreSQL. 📝Leveraging cloud services like AWS to ensure scalability and reliability. Whether it’s delivering sleek user interfaces, constructing powerful back-end architectures, or providing complete end-to-end solutions, I am committed to producing work of the highest quality. Let’s work together to bring your ideas to life! 🚀 💻𝐌𝐲 𝐬𝐤𝐢𝐥𝐥𝐬💻 🧰Backend Development: Proficient in Node.js and Express, delivering efficient server-side solutions and robust RESTful APIs. 🧰Programming Languages: Skilled in JavaScript and TypeScript, with advanced experience in modern frameworks like Next.js for server-rendered and dynamic web applications. 🧰Frontend Development: Expertise in React with Redux (Thunk, Saga, Toolkit) for state management, creating scalable and maintainable front-end architectures. 🧰Database Management: Experienced in designing and managing databases with PostgreSQL, MongoDB, and MySQL to ensure secure and efficient data storage. 🧰API Integration: Extensive knowledge of API development and integration using Axios, ensuring smooth communication between applications and back-end systems. 🧰Libraries & Tools: Familiarity with Mongoose, Parcel, JSON Web Token (JWT) for secure authentication, and Swagger for API documentation. 🧰Testing: Strong expertise in unit testing using Jest, ensuring code reliability and performance. 🧰Cloud & Authentication: Proficient in AWS, Amazon S3, and authentication tools like Google Auth0 and Keycloak for secure user management. 🧰Styling & Design: Advanced skills in HTML, SCSS, CSS, and modern frameworks like Styled-components and Tailwind CSS to deliver responsive and adaptive designs. 𝗦𝗼, 𝘆𝗼𝘂'𝗿𝗲 𝗰𝘂𝗿𝗶𝗼𝘂𝘀 𝗮𝗯𝗼𝘂𝘁 𝗺𝗲, 𝗵𝘂𝗵?🤔 Let me break it down for you in a more chill way. I've got some pretty cool skills and can handle a wide range of stuff. 🔥Working with me, you get a professional , who deeply understands the entire development cycle, from architecture design to product launch. 🔥I am focused on providing you with not only a turnkey solution, but also business value, taking into account all aspects of security, performance and scalability. 🔥My flexibility and attention to detail allow me to quickly adapt to customer requirements and provide timely updates at every stage of the project. 🔥By choosing me, you get a partner who puts all his time and effort into the project. 🔥I always find the most optimal ways to solve problems, focusing on your budget and deadlines. 🔥Thanks to my experience, I can independently manage the project at all levels, eliminating the need to involve additional specialists. I've all run out of letters, now it's your turn to write to me. ​𝗵𝗼𝘄 𝘄𝗲 𝗰𝗮𝗻 𝗰𝗿𝗲𝗮𝘁𝗲 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿🤞 With love and respect Julia🤝 Keywords: Node.js | Express.js | JavaScript backend | Node.js API development | RESTful API development | Server-side development | Node.js and MongoDB | Real-time applications | React.js developer | Frontend React developer | React components | React hooks | Redux development | React and REST API | SPA development | React.js optimization | Next.js development | Frontend web development | HTML5/CSS3 developer | JavaScript frontend developer | MaterialUI | Frontend performance optimization | Full stack JavaScript developer | Full stack web development | RESTful API integration | Full stack app development | Backend integration | Frontend integration | Full stack cloud deployment | AWS | iOS | Android | Mobile App | Cross-Platform | App Development | Native Modules | App Store | Play Store | Push Notifications | Mobile Development | Performance Optimization | Mobile Solutions | Mobile Architecture | App Deployment | Mobile Testing | App Security | Mobile Backend Integration | App Analytics | Mobile App Maintenance | User Authentication | Mobile Database | API Integration | Mobile App Design
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Unit Testing
    REST API
    AWS Development
    API
    Back-End Development
    Mongoose
    SendGrid
    Redux
    PostgreSQL
    Next.js
    TypeScript
    ExpressJS
    MongoDB
    Node.js
  • $15 hourly

    • 5.0/5
    • (5 jobs)
    Young front-end programmer and web designer, specializing in artistic and animated sites, applying the latest techniques and technologies in web development.🤺 I fulfill orders of any complexity regarding design, I have a young modern outlook and strong support in the form of mentor and friends of programmers and designers. 👨‍💻👩‍💻👨‍🎨 First of all I take into account your requirements and wishes, if you wish I can offer my solutions or views on the topic. 🤝 I am a developer with more than 3 years of experience in website development and design❗ and about 5 years of programming experience in general ❗Learned through a lot of daily effort: reading articles, watching videos and with a lot of help from my mentor. My list of skills 😎: Front-end: 💣HTML5 💣 CSS3 💣 React.js 💣 JavaScript Libraries that help you create modern animation technology: 💣 GSAP.ScrollTrigger 💣 GSAP.MotionPathPlugin 💣 GSAP.DrawSVGPlugin 💣 GSAP.GSDevTools 💣 Swiper 💣 Three.js (in progress) Design: 💣 Figma 💣 Photoshop 💣 Tilda 💣 Illustrator Back-end: 💣 WordPress 💣 PHP 💣 Django 💣 Heroku 💣 GitHub Extras: 💣 Python 💣 Knowledge and use of multiple algorithms. 💣 Studying at a prestigious Slovak inuversite. Very confident in front-end development and design, but also proficient in back-end development to do medium to simple level websites on my own. I do not do complex structured sites with complex architecture. Contact me if you want something new 🙌🙌🙌
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Figma
    GSAP
    Bootstrap
    Responsive Design
    Full-Stack Development
    GitHub
    Python
    Django
    UI Animation
    WordPress
    React
    Web Design
    CSS 3
    HTML5
  • $30 hourly

    • 4.9/5
    • (178 jobs)
    I have full understanding and wide knowledge in Web development languages such as PHP/MySQL, XHTML/CSS, Javascript, jQuery, Ajax Dynamic HTML, CSS, XML etc
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    OpenCart
    CSS
    jQuery
    PHP
    HTML
    AJAX
    CSS 3
    MySQL
    HTML5
  • $20 hourly

    • 5.0/5
    • (18 jobs)
    Hi where. My name is Dmitriy. Web site developer for 5 years. My main area of expertise is WordPress CMS, PHP and Javascript. ✔ Wordpress theme development from design to individual template ✔ Wordpress theme customisation ✔ Create responsive Wordpress theme ✔ Frontend-development on Wordpress ✔ Convert Figma/PSD/Sketch/Zeplin to Wordpress ✔ Experienced on Wordpress templates any level of difficulty. ✔ Deep knowledges Codex and API of Wordpress.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Plugin Installation
    Figma
    PHP
    Twitter/X Bootstrap
    PSD to CMS
    PSD to HTML
    CSS 3
    HTML5
    WordPress
  • $33 hourly

    • 5.0/5
    • (2 jobs)
    Started working in 2017 as a front-end developer using React.js. After 2 years switched on the back-end for developing blockchain applications (as a secure storage system) and Node.js RESTfull API (for general purposes). After 2.5 years working as a back-end Developer (using Adonis.js framework) started working as a fullstack developer with React on the front-end and Node.js on the backend, and continue working as a fullstack developer nowadays. Here is a list of all my projects, that I worked on for all these years. My skillset: - common: JavaScript, TypeScript; - frontend: React.js, Redux, Redux saga, Redux thunk, Material UI, Ant design, bootstrap, HTML, CSS; - backend: Node.js, Nest.js, Adonis.js, Jest, Mocha, Chai, PostgreSQL, Mongo.db, Dynamo DB, Swagger, Socket.io; - DevOps: nginx, AWS, Azure, Docker; - integration experience: Google Maps, OAuth, Facebook, Instagram, Mailgun, Watson AI, Assembly AI, Shopify; Below I will provide a list of my projects, but since I work for an outsourcing company under an NDA, I unfortunately cannot name almost all of them and use them in my portfolio. [Instagram stats] — React.js, 3 months. Making front-end admin panel side on React.js, starting the project, and finishing it. Worked as only one developer on this part. Making back-end on Express, helping with Instagram API integration, and writing tests. Used PostgreSQL. Worked together with other back-end developer [Health-tech project] — React.js, 2 months.Writing front-end part of React.js of the application. Worked as a part of a big team (20+ members) [Blockchain project 1] — React.js, Node.js (Adonis), PostgreSQL, Hyperledger Fabric Composer, ~ 2 years. Starting front-end project on React.js, reassigned to another person after 1 month. Starting, working, and finishing back-end projects on Adonis.js (Node.js). Used PostgreSQL. Mocha + chai for tests. Worked as 1 developer there and with another developer here later. Tests on Mocha+chai. Writing blockchain part on Hyperledger fabric Composer. Integration with Mailgun, Google API. Developed chat using web socket. Responsible for server part also, virtual machine configuring and maintaining on Azure. Added caching from the blockchain with event handling as actualizing cache. [Blockchain project 2] — Node.js (Adonis), PostgreSQL, ~ 1 year. Starting, working, and finishing the back-end part on Adonis.js (Node.js). Used PostgreSQL. Mocha + chai for tests. Integration with Mailgun, Google API. Developed offline mode support for this app. Worked as only 1 back-end developer here. Tests on Mocha+chai. Responsible for server part also, virtual machine configuring and maintaining on Azure. The project had offline mod and worked on the sync process. [Blockchain project 3] — Node.js (Adonis), PostgreSQL, ~ 1 year. Starting, working, and finishing the back-end part on Adonis.js (Node.js). Used PostgreSQL. Mocha + chai for tests. Integration with Mailgun, Google API. Worked as only 1 back-end developer here. Tests on Mocha+chai. Responsible for server part also, virtual machine configuring and maintaining on Azure. That was more like a clone of the previous project but for another region. So I made almost the same stuff here. [SaaS project 1] — React.js, Node.js (Serverless), Dynamo DB, 6 months. Worked as a Full-stack developer on our staff in a fully English team. Front-end on React.js, Back-end on serverless using Node.js. Dynamo DB. Helped with deploys and some other DevOps stuff. Worked in a team of 5 people, all of them were full-stack developers. Worked on a huge iframe modifications stuff with adding overlay elements to this iframe. [SaaS project 2] — React.js, Node.js (Nest.js), PostgreSQL, 6 months. Worked as Full-stack developer in a partially English team (manager and half of the developers were English speakers). Front-end on React.js, Back-end on Nest.js (Node.js). Used PostgreSQL. Jest for backend tests. Worked in a team of 10 people. Added AssemlyAI integration as well as IBM Watson AI integration. Started making a mono-repository for the front end. Developed very complex SQL queries for statistic collecting. [Fintech project 1] — React.js, 7 months. Worked as a front-end developer in a partially English team. Front-end on React.js. Worked in a team of ~100 people. There were a lot of complex forms on the project, so made optimizations for them. [Educational project] - Node.js (Nest.js), PostgreSQL, 6 months. Worked as back-end developer here. Started and finished this project. Tests on Jest. Integration with Mailgun, ChatGPT. Used PostgreSQL. Worked in a team of 5 people. Integrated complex student passing course flow with automatic calculating progress and grades.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Azure DevOps
    TypeScript
    Test-Driven Development
    AWS Systems Manager
    MongoDB
    PostgreSQL
    NestJS
    Node.js
    Redux
    CSS
    HTML
    React
  • $35 hourly

    • 5.0/5
    • (5 jobs)
    Hello, below is where I can help you with - NodeJs, TypeScript - Express.js - WebSocket, Web Push - MongoDB, MySQL - REST API, GraphQL - RabbitMq - Docker, Kubernetes - CI/CD - Integration/Unit tests AWS (Lambda, Cognito, EC2, EKS, ECR, CloudFormation, SES, SNS)
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    AWS Lambda
    API
    Amazon DynamoDB
    PostgreSQL
    Amazon Web Services
    MongoDB
    MySQL
    TypeScript
    Node.js
  • $32 hourly

    • 5.0/5
    • (3 jobs)
    Hey there!👋 Looking for someone to handle all your design and web development needs seamlessly? That's where I come in. With over 5 years of experience, I've dabbled in everything from crafting simple CMS landing pages to tackling intricate e-commerce and Big Data projects. 🛠️ My approach? It's all about embracing creativity and tailoring solutions to fit both your needs and your budget. Here's a snapshot of what I bring to the table: ✅Web and graphic design 🎨 ✅Web development expertise spanning PHP (CMS, Laravel, Symfony), Wordpress (custom development, themes, builders), Woocommerce (including advanced subscriptions and membership solutions), Shopify websites and themes, Magento 2, and more 🌐 ✅Skills in web scraping and data mining, database management (MySQL, PostgreSQL), and DevOps (website deployment, server setup on AWS, GCP, DigitalOcean) 💻 ✅Proficiency in JavaScript (React, vanilla JS), HTML, Bootstrap, CSS, SCSS, ensuring pixel-perfect layouts and efficient pagespeed optimization 🚀 ✅Experience with affiliate marketing websites, as well as integrating tools like Google Analytics, GTM, Google Ads, and Facebook Pixel 📊 I pride myself on being efficient, client-oriented, and adaptable. So, whether you're looking to grow your business, launch a startup, or simply make a positive change in the world, just let me know your challenge, and I'll craft the perfect solution for you. 🌟
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Custom PHP
    MySQL
    DevOps
    Magento 2
    PostgreSQL
    Shopify Development
    Shopify Apps
    Full-Stack Development
    Back-End Development
    Front-End Development
    Web Development
    Web Application
    CMS Development
    WordPress
    Design Writing
    HTML
    Shopify
    PHP
    Python
  • $45 hourly

    • 5.0/5
    • (5 jobs)
    I'm a motivated and enthusiastic backend developer who loves to learn and creatively solve problems. Have experience in using Agile methodology working on team projects. Practice and work on result are impotent for me as a being member of productive and friendly team. Main tech skills are: - Node.js - Express - Next.js - JavaScript - TypeScript - PostgreSQL - MySQL I understand OOP and SOLID principles.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    NestJS
    ExpressJS
    Node.js
    TypeScript
    SQL
    PostgreSQL
    MySQL
  • $50 hourly

    • 5.0/5
    • (3 jobs)
    🚀 Transform Your Vision into Exceptional Web & Mobile Experiences with Expert MERN Stack and React Native Development 🚀 I’m an experienced full-stack developer, specializing in both web and mobile application development. With React, Next.js, Node.js, and MongoDB, I build scalable and high-performing websites, while leveraging React Native to craft top-tier mobile apps for iOS and Android. With over 4 years in React, 2.5 years in React Native, and 1 year in Next.js, I bring a well-rounded skill set that delivers cross-platform solutions to meet any business need. 𝗪𝗵𝗮𝘁 𝗜 𝗢𝗳𝗳𝗲𝗿: 🌐 MERN Stack Website Development: Specializing in React for dynamic, responsive user interfaces, Next.js for server-side rendering and improved SEO, and Node.js for creating scalable back-end services. I build custom websites with a focus on speed, security, and user experience. 📱 React Native Mobile App Development: Expert in creating high-performance, cross-platform mobile apps that work seamlessly on both iOS and Android. Whether it’s an e-commerce app, a social platform, or a business tool, I ensure smooth user experiences with native-like performance. 🚀 𝗞𝗲𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: Custom Web Solutions: From responsive websites to complex SaaS platforms, I develop solutions tailored to your specific business needs using the MERN stack. Mobile App Development: Using React Native, I build robust mobile applications that work flawlessly across different devices, providing native-like performance and smooth animations. Server-Side Rendering with Next.js: Boost your website’s SEO and load speeds with Next.js, ensuring optimal user experience and higher search engine rankings. Performance Optimization: I specialize in optimizing both web and mobile apps, delivering smooth 60fps experiences that feel natural and fast. Ongoing Support & Maintenance: My commitment doesn’t end with project delivery. I offer long-term support and updates to ensure your site or app stays secure and current. 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲❓ 🌐 MERN Stack Expertise: Custom website development using React, Next.js, Node.js, and MongoDB. ⚛️ React Native Mastery: High-quality mobile apps with native-like experiences on both platforms. 🤝 Client-Centric Approach: I’m dedicated to meeting your project needs, providing high-quality work on time. Let’s build something great together! Ready to bring your web or mobile project to life? 𝙂𝙚𝙩 𝙞𝙣 𝙩𝙤𝙪𝙘𝙝, 𝙖𝙣𝙙 𝙡𝙚𝙩'𝙨 𝙙𝙞𝙨𝙘𝙪𝙨𝙨 𝙝𝙤𝙬 𝙬𝙚 𝙘𝙖𝙣 𝙘𝙧𝙚𝙖𝙩𝙚 𝙖𝙣 𝙤𝙪𝙩𝙨𝙩𝙖𝙣𝙙𝙞𝙣𝙜 𝙥𝙧𝙤𝙙𝙪𝙘𝙩 𝙛𝙤𝙧 𝙮𝙤𝙪𝙧 𝙪𝙨𝙚𝙧𝙨! ⚡
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Augmented Reality
    Flutter
    Firebase
    Chat & Messaging Software
    Android App Development
    Swift
    User Authentication
    API Integration
    iOS Development
    Smartphone
    Mobile App Development
    Android
    React Native
    iOS
  • $40 hourly

    • 5.0/5
    • (2 jobs)
    I am a talented full stack web developer with a passion for creating innovative and dynamic web applications. My expertise spans the entire web development stack, from front-end design to back-end arcitecture and everything in between. With a strong focus on clear communication and efficient project management, I deliver high-quality results that exceed client expectations. My main stack & skills: ✔ Front-End -HTML 5, CSS 3, Bootstrap, Jquery, JavaScript -React, NextJS, TypeScript, Redux, Redux Thunk, Redux Saga, Redux Hooks, React Rouer -VueJS, Angular -Material-UI, Tailwind CSS -Figma, Adobe XD ✔ Back-ENd -PHP, Laravel, CI -NodeJS, Express JS -Flask, Django -Websocket -Promise, middleware, JWT, routing ✔ Database -MySQL, PostgreSQL, GraphQL -MongoDB -AWS Lambda, DynamoDB ✔ other(CMS) -WordPress, Shopify, Squarespace -Webflow, Learnworlds So if you are looking for a skilled, reliable full stack web developer to take your project to the next level, look no further than me.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Shopify
    Webflow
    Vue.js
    API Integration
    CSS 3
    HTML5
    Angular
    Laravel
    WordPress
    Python
    Java
    React
    Node.js
    PHP
  • $35 hourly

    • 4.9/5
    • (2 jobs)
    Andrii is a highly skilled Full Stack Web and Blockchain Developer with 8 years of experience working as a freelancer. He has a deep passion for creating innovative and robust web applications and leveraging blockchain technology to build decentralized solutions. With a solid foundation in both frontend and backend development, Andrii excels in designing and implementing cutting-edge user interfaces and ensuring seamless user experiences. He is proficient in a wide range of programming languages, including JavaScript, Python, HTML/CSS, and Solidity. Andrii's expertise extends to blockchain development, where he has successfully built and deployed various decentralized applications (dApps) on platforms like Ethereum and Hyperledger. He is well-versed in smart contract development, token creation, and implementing blockchain-based consensus mechanisms. Throughout his freelance career, Andrii has collaborated with diverse clients and industries, delivering tailor-made solutions that meet their unique requirements. He has a strong track record of delivering projects on time and within budget, while maintaining clear and effective communication with stakeholders. His technical prowess combined with his problem-solving skills allows him to navigate complex challenges with ease. Andrii is dedicated to staying updated with the latest industry trends and emerging technologies, ensuring that he delivers state-of-the-art solutions that drive business growth and innovation. In addition to his technical abilities, Andrii is an excellent team player who values collaboration and knowledge sharing. He enjoys working in agile environments, where he can contribute his expertise while also learning from his peers. If you are looking for a versatile Full Stack Web and Blockchain Developer who can bring your ideas to life, Andrii Smith is the ideal candidate. With his extensive experience, technical expertise, and dedication to excellence, he is committed to delivering exceptional results for your project.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Tailwind CSS
    Vue.js
    React
    TypeScript
    Rust
    Web3
    Solidity
    Blockchain
    Management Skills
    Information Technology
    Linux
  • $45 hourly

    • 5.0/5
    • (1 job)
    A dedicated Full-Stack Software Engineer with a 6-year track record in JavaScript, React, TypeScript, and advanced React Hooks. I have contributed significantly to system efficiency improvements through my expertise. My experience with the Next.js framework and advanced styling libraries is robust. My unit testing skills have helped decrease software bugs by 30%. I proficiently manage projects within high-speed Scrum or Kanban environments through Agile methodologies. My skill set: - Languages: Javascript, Typescript, C#, C++, Python - Frontend: React, React Native, React Hooks, Angular, Vue, HTML/CSS, Web3, Ethers.js - Backend: Node.js, Next.js, ASP.NET - Database: MySQL, PostgreSQL, MongoDB, GraphQL, Subgraph, Firebase, Firestore - Cloud & Infrastructure: AWS (Lambda, ECS), Azure, Terraform, Docker, Kubernetes - UI/UX: Material UI, Tailwind CSS, Styled Components, Figma - Testing & Methodologies: Cypress, Jest 📩🚀 Ready to elevate your project to new heights? Don't hesitate – send a direct message or invite to the project for an exceptional experience! Let's make your vision a reality together!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Unit Testing
    Azure DevOps
    GraphQL
    MongoDB
    Next.js
    TypeScript
    Node.js
    Redux
    Vue.js
    Angular
    React Native
    React
    Full-Stack Development
    Front-End Development
  • $35 hourly

    • 5.0/5
    • (1 job)
    A Freelancer with expertise in Full Stack Web and Mobile Applications which helps clients grow their business and provide the best value. Leveraging my extensive expertise in React, Next.js, React Native, Node.js (including Nest.js and Express), Python, ASP.NET Core MVC and Blazor, I specialize in the meticulous creation of exceptional web applications that offer unmatched user experiences. Here's what you should know about me: ✔️ I have a strong understanding of both frontend and backend technology, making sure that I can supply excellence in all factors of development. ✔️ I place a strong emphasis on writing clean, efficient code, crafting user interfaces for optimal user experience, and establishing seamless integrations with external APIs and services. ✔️ I pride myself on my ability to deeply understand my clients' unique requirements and exceed their expectations at every turn. Here are some of the core Technologies and Platforms I'm working with: ***** Frontend ***** ✓ HTML, CSS, JavaScript (ES6 / ES7 +, Babel), TypeScript ✓ ReactJS (Hooks), Redux, Redux-Saga, Vue.js ✓ ASP.NET Core Blazor ✓ Axios, GraphQL, Apollo, REST API ✓ Deploy to TestFlight / TestFairy, AppStore and Play Market ✓ Figma, AdobeXD, Zeplin ***** Backend***** ✓ Node.js, Express, Nest ✓ Python, Django, FastAPI ✓ C#/ASP.NET Core, ASP.NET Core MVC, Entity Framework ✓ SQL (MySQL, MS SQL), PostgreSQL, MongoDB ✓ Docker, Kubernetes ✓ GitHub, GitLab, Bitbucket ✓ Jira, Trello, ClickUp ✓ Amazon Web Services (DynamoDB, S3, EC2) ✓ Azure ✓ Heroku, Firebase ***** Mobile Development ***** ✓ React Native, Android, IOS ✓ Expo, React Native CLI ✓ App center, Firebase distribution, TestFlight I will guide you through the development process and deliver outstanding results. If you like what you see, feel free to reach out. Thank you for viewing my profile.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Blazor
    Next.js
    ChatGPT
    Node.js
    React
    API Integration
    Microsoft SQL Server
    ASP.NET MVC
    .NET Framework
    NGINX
    MongoDB
    Kubernetes
    Docker
    Python
  • $40 hourly

    • 5.0/5
    • (29 jobs)
    I am a product developer and, at the same time, a co-founder of several startups of my own. It gives me a clear understanding of how to bring your idea to life. In a few words, I lead the Brocoders development team. My team and I developed well-tested and winning solutions for more than 50 clients and have expertise in: Short overview: ✅ 85 projects done ✅ 10+ years on the market ✅ 20 five-star reviews on Clutch 🐥 Agritech 💰 Fintech 🚴‍♂️ Fitness & Wellness 🛵 Ride-sharing 🍏 Foodtech 🎼 Event Management My tech stack: ✅ Node.js ✅ React.js ✅ React Native ✅ Gatsby.js 🟢 AI skills: AI Integration, OpenAI API, GPT-3, GPT-4, AI Chatbot Development, Machine Learning, Natural Language Processing (NLP), AI Automation, AI-Powered Web Apps, Data Analysis with AI, AI-driven APIs, AI-based Personalization. I work shoulder-to-shoulder with my clients in an open manner throughout the entire product life-cycle. Moreover, in my team, we’re constantly optimizing the development process (e.g., Nest.js, React Native boilerplates, UI kit) that helps us start faster and cost-efficiently. Open to learn more? Feel free to get back to me with any questions you have, I’d be more than happy to present our approach.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Machine Learning
    OpenAI API
    Web Development
    API Documentation
    Stripe
    Web Application
    Artificial Intelligence
    DevOps
    ChatGPT
    MongoDB
    React Native
    Node.js
    React
    Mobile App Development
  • $15 hourly

    • 4.7/5
    • (33 jobs)
    I'm a versatile web front-end developer with experience in designing, developing and managing complex e-commerce and personal sites. My professional strengths are: - proficient in HTML5, CSS3, JavaScript and JQuery; - experienced in cross-browser testing and development; - experienced in responsive design; - experienced in PSD/jpg/Sketch to HTML coding; - creative problem solver.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Figma
    PSD to HTML
    Adobe XD
    Responsive Design
    CSS 3
    HTML5
    WordPress
    CSS
    HTML
  • $30 hourly

    • 4.8/5
    • (12 jobs)
    I welcome everyone who visited my page 🙂 My name is Max, I have a huge and diverse experience in developing, customizing, and maintaining websites and stores on WordPress. For more than 8 years I have been working in the best web studios of Ukraine as a main developer and team leader. For the last year, I've been trying my hand at Upwork and looking for projects on my own. So if you have any problems or questions about WordPress, I will be happy to help you solve them. Since I have been working with this CMS for a long time, I have managed to familiarize myself and work with almost all its aspects. Developing or customizing themes or plugins, creating or modifying widgets for page builders, integrating third-party services or APIs, optimizing speed and resources - these are just a small part of the types of work I have encountered and successfully completed. I prefer long-term projects with hourly rates. But I don't shy away from small tasks that may interest me or that I can complete in a couple of hours. So I will be happy to discuss your tasks with you in private messages. Have a nice day!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Web Development
    jQuery
    Avada Theme Customization
    WordPress Development
    WPML
    bbPress
    WordPress
    Divi
    HTML5
    WooCommerce
    PHP
    CSS
    MySQL
    Elementor
  • $20 hourly

    • 4.9/5
    • (17 jobs)
    👋 Greetings! I'm a developer with a strong background in creating mobile apps and websites. Utilizing tools like React, Next.js, Node.js, GSAP, JavaScript and more, I have developed numerous successful software solutions for companies offering online services. I excel in problem-solving and continually seek to improve my skills. My tech arsenal includes: ✅ JavaScript | TypeScript | React | Next.js | GSAP ✅ React ✅ SolidJS ✅ Next.js ✅ Static Websites ✅ Progressive Web Apps (PWA) ✅ GSAP | GreenSock (Animation) ✅ High-fidelity markup with pixel-perfect precision ✅ GraphQL, REST API ✅ Node.js | Express | Nest.js | MongoDB | Mongoose | MySQL | PostgreSQL ✅ MUI, Ant Design, Chakra UI, UIKIT, Tailwind CSS, Styled Components, Bootstrap, HTML, CSS, SCSS 🔧 Core Skills & Strengths I am passionate about writing clean, maintainable code and solving problems efficiently. I thrive on cross-functional collaboration, seamlessly working with designers, product managers, and fellow developers to create cohesive, user-centered products. As a strong communicator, I bridge the gap between technical requirements and business goals, ensuring that each project meets its objectives. 🎓 Certifications I hold the following certifications: 🏅Meta Front-End Developer Certificate 🏅Intermediate Back-End Development: Node & MongoDB 💼 Technology Stack & Specializations Focusing on frontend development, I possess a solid command of JavaScript (ES6+), React, Next.js, TypeScript, CSS-in-JS solutions, and API integrations. My goal is to ensure that each line of code contributes to a seamless user experience, optimized for performance across devices. 📈 Continual Growth & Innovation I am always exploring new ways to enhance my skills and stay at the cutting edge of frontend technologies. I aim to craft solutions that not only meet but exceed user expectations, with an eye toward future scalability and ease of maintenance. 💡 My Values ⭐ Collaboration and quick iterations to keep us aligned ⭐ Ethics and accessibility ⭐ Openness to feedback and continuous learning ⭐ A workflow centered around clean, readable, well-refactored, and modular code 💫 Ready to Boost Your Business? Let’s collaborate and turn your digital aspirations into reality! Together, we can make it happen! 🚀 Feel free to let me know if there are specific areas you’d like to emphasize or if you have additional details you’d like to include!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Progressive Web App
    GSAP
    React Native
    Database
    Material UI
    TypeScript
    Next.js
    React
    MongoDB
    RESTful Architecture
    Node.js
    ExpressJS
    CSS
    HTML
  • $25 hourly

    • 5.0/5
    • (8 jobs)
    Hello, I'm Anton, a seasoned WordPress/Shopify developer with 4 years of expertise. My focus lies in crafting custom themes, with a primary emphasis on WordPress projects, while also bringing valuable experience to Shopify development. Core Skills: ⭐️ WordPress Development: ACF, Gutenberg, Gulp 🛠️ Shopify Development: Liquid, Themekit, Git 💻 Full-stack Technologies: HTML, CSS, JS 🔄 Version Control: Git 🌐 Fluent in English (B1, Intermediate) Why Choose Me: I'm all about results. Open to any project, any budget. Let's make it happen together—simple, effective, and tailored to your needs. 🚀
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Shopify
    HTML
    WordPress
    HTML5
    jQuery
    CSS 3
  • $42 hourly

    • 5.0/5
    • (3 jobs)
    Hello I am Oleksandr based on Ukraine. - 5 years of experience with front end development Front End Technologies: HTML, HTML5, CSS, CSS3, Sass, Less, jQuery, Bootstrap, JavaScript, TypeScript, ReactJS/React Native, AngularJS, Angular2+, Material UI, Styled Components, Tailwind CSS, Storybook, etc - 1.5 years of experience in QA testing Looking forward to working with you and your team Thanks
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Jira
    Test Case Design
    Regression Testing
    Bug Tracking & Reports
    QA Engineering
    Manual Testing
    Front-End Development
    CSS
    HTML
  • $40 hourly

    • 5.0/5
    • (1 job)
    As a senior software developer familiar with C#/.NET, C++, Qt, PHP, JavaScript, and Python, I have solid experience in developing desktop applications and websites. I developed real-time video streaming, Audio recognition program, Audio recorder, Video player, screen capture program, and car recognition program. As well, I built market platforms, eCommerce, e-store websites, restaurant websites, travel & booking websites, food & recipe websites, and corporate & business websites. I drive toward high quality and performance of results.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    PHP
    Python
    C#
    C++
  • $25 hourly

    • 4.9/5
    • (2 jobs)
    Hey there! I'm Aleksandr Lugchenko, a frontend developer with over four years of experience in web development. I've been working with the React ecosystem for the past three years, and it's been quite a ride so far. Throughout my career, I've been lucky enough to work on some super cool projects, including a few related to blockchain technology. One project that I'm stoked about is building a custom UI library for Calypso Pay. I even got to work on a key application section! It was such an honor to be part of such an innovative initiative. I've also taught front-end development courses and mentored students, which has been super rewarding and helped me to further develop my skills and knowledge in the field. When I'm not coding, I love hanging out with my amazing family. I'm married and have three awesome kids who keep me on my toes. In my free time, I enjoy exploring my passion for tattoos and biking. Tattooing's creativity and artistry really speak to me, and biking is a killer way to stay active and discover new places. Thanks for taking the time to read my profile. I'm always open to questions and opportunities, so don't be shy to hit me up. Can't wait to hear from you soon!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    NodeJS Framework
    Web Scraping Plugin
    Responsive Design
    Git
    HTML5
    CSS 3
    Redux
    Node.js
    React
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    I am an experienced & talented & enthusiast developer interested in building usable, useful, well- constructed Blockchain & NFT projects. Proficient at performing well as working in a group or independently in a fast- paced setting. Deep understanding of distributed ledger, blockchain safety, blockchain design principles, and various blockchain protocols and environments.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Ethereum
    NFT Marketplace
    Node.js
    Solidity
    Figma
    web3.js
    NFT Minting
    Blockchain
    Solana
    React
    GitHub
    TypeScript
    Rust
    Golang
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