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Hire the best JavaScript Developers in Sibiu, RO

Check out JavaScript Developers in Sibiu, RO with the skills you need for your next job.
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Clients rate JavaScript developers
Rating is 4.9 out of 5.
4.9/5
based on 740 client reviews
  • $50 hourly

    • 5.0/5
    • (20 jobs)
    I'm Costel, a seasoned Expert Full-Stack Developer with 20 years of experience and a Master’s in Computer Science, specializing in Custom Web Applications and WordPress. My expertise encompasses a broad range of solutions, including bespoke web applications, CMS, ERP systems, API development & integrations, e-commerce, as well as comprehensive WordPress front-end and back-end services. My approach prioritizes quality, performance, and scalability, ensuring each project not only meets but exceeds expectations. My expertise includes: - Custom web applications using Laravel, PHP/MySQL/HTML/CSS/JS (I've developed tens of custom complex systems eg: order management systems, production planning/tracking, invoicing, inventory management, email marketing solutions, job listings, medical platforms, web portals, etc.) - CMS / ERP systems - API development & integrations - WordPress bespoke themes, plugins, customizations - WooCommerce & Prestashop e-commerce solutions - Websites speed optimizations I ensure lightweight, robust solutions, optimized for speed and SEO, tailored to drive results and conversions. My commitment is reflected in my Upwork success, with a record of high ratings and client satisfaction, representing a recent yet significant part of my extensive career. What sets me apart? - Exceptional communication, projects/task understanding, always bringing innovative ideas and solutions - High-quality delivery, minimizing revisions and bugs - Reliability in meeting deadlines, with a well-organized approach - Passion and dedication to every project, ensuring 100% commitment - Agility and flexibility, adapting to the dynamic nature of software projects I’m here to make sure your project thrives, countering the industry’s trend of delays and budget overruns. Partner with me for a seamless, successful development experience.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    jQuery
    CSS
    HTML
    Bootstrap
    PHP
    Database Design
    Web Application
    Custom PHP
  • $35 hourly

    • 5.0/5
    • (1 job)
    ADDITIONAL INFORMATION PROJECTS 2018 Memory Games, Faculty of Engineering In my second year of university, I created a "Memory games" project in Borland C++ 6. This game includes finding the two pairs of the same image. When opening the game, one can choose between playing alone or on a server. The project's main objectives were to display 32 random cards containing 16 pairs of images to make cards flip around when right-clicking. It was challenging to find the right algorithm which turns around all the cards when two cards with different images were shown. 2018 Online Questionnaire, Faculty of Engineering Also, in my second year of university, I created another project called "Online questionnaire". It was developed in PhpStorm using HTML, CSS, JavaScript and Php. 2018 Application for internship, NTTData It was an internal application for bench employees. They could log in, access their page, and apply to available projects.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Android App
    React
    C#
    C++
  • $50 hourly

    • 5.0/5
    • (2 jobs)
    *Fullstack Web Development* - Develop website from scratch or Continue the development already in progress - Upgrade existing website to be cost/performance effective, with cutting-edge technologies - Review infrastructure and boost performance, optimize cost *Data Engineering* - Extract your data from API services or scrapping - Clean your data - Load data into your database - Automate Extract/Clean/Load process with minimum budget and best performance *DevOps* - Deploy your project on Cloud services - Set up CI/CD pipeline with the best efficiency -- About me -- I'm a full-stack developer and DevOps engineer with 6+ years of experience. Across my career, I have been using Python as a primary programming language, along with Java and Javascript. Also, I have hands-on experience with Cloud platforms, especially with AWS and GCP, Azure. I'm familiar with the following technologies: - Python, Django, Flask, FastAPI - Javascript, Node.js - PHP, Laravel - Java, Springboot - AWS with Lambda, EC2, API Gateway, DynamoDB, RDS, SNS, SQS, Cognito etc - GCP with Google App Engine, Compute Engine, Cloud Storage etc - CI/CD with Github Actions, Gitlab runners Feel free to reach out if you need to know more about me or have a project/task that fits my skills.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    CI/CD
    ETL Pipeline
    RESTful API
    AWS Lambda
    PHP
    Laravel
    React
    Python
    Vue.js
    Node.js
    Django
    Flask
    Bootstrap
    MySQL
  • $35 hourly

    • 5.0/5
    • (4 jobs)
    I am an experienced WordPress developer, who enjoys making websites easier to use. I have very high standards regarding accessibility, web standards, and browser compatibility. Languages & Technologies I know. - XHTML & HTML5 - CSS, Flexbox, SCSS, Bootstrap - JavaScript, ES6, jQuery, AJAX, Fetch - PHP, MySQL, Wordpress Development, HubSpot - Wordpress Builders ( Divi. Elementor etc.) - Gulp, Git, Lando Also with a more of a creative background I am very fluent with programs such as Photoshop and have a good eye for detail when it comes to implementing or helping create a design.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    PSD to WordPress
    WordPress Theme
    WordPress Development
    Web Development
    WordPress Plugin
    PHP
    Git
    WordPress
    AJAX
    HTML5
    CSS 3
    jQuery
    Bootstrap
  • $45 hourly

    • 4.4/5
    • (7 jobs)
    Hi! I am Cristi and I have 5 years of experiences in web development. During my college days, I had honed my web front end skills as daily routine so I developed many React Vue components and front end applications. I have exceptional skills in React, Vue(2,3)/Nuxt development. Here's my skills set summary. Programming language - Javascript, Python. PHP Front end skills - React, Redux(Thunk, Saga), Functional Programming,.. - Vue2. Vue3-composition API, Vuex, Vuetify, Nuxt - Web AR, VR, MR, Three.js, WebGL - Bootstrap, Tailwind, Bulma, - HTML, CSS, jQuery Back end skills - Node - Laravel - Django Besides I have experiences in Docker and kubernetes, API and Graphql... I will always deliver the quality products to you on time with my faithful work. I love programming and learning new skills.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Virtual Reality
    Augmented Reality
    WebGL
    Vue.js
    Laravel
    Nuxt.js
    Node.js
    Three.js
    React
  • $30 hourly

    • 5.0/5
    • (5 jobs)
    I'm fullstack developer. I have over 6+ years of work exeperience in python and web development. In my portfolio of a few programs that I developed. I believe that my strengths is my creativity and punctuality. My # 1 goal will always be to meet your needs and deadline. When working on a new project, I would like to talk to the client, so I can have a clear idea about his/her needs and vision of the project. Since 2010, I'm programmer in the project Russian-Kurort.ru. My work in this project every year helps thousands of people to travel and revitalized. My work helps other people and it's really important. Thanks in advance for your time and attention. I look forward to working with You in the near future. Listed below are my experience and skills. - Languages: Python, Javascript, Go, SQL; - Frameworks: Bootstrap, JQuery, Flask, Django, aiohttp, Jinja; - Core web: XML, JSON, HTML/CSS, Svg, Canvas; - OS: FreeBSD, Linux, Windows; - VCS: Git, SVN.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Python Asyncio
    RabbitMQ
    SQL
    PostgreSQL
    Redis
    Golang
    MongoDB
    Python
  • $35 hourly

    • 0.0/5
    • (0 jobs)
    Software engineer with experience in Go and React. Have worked on projects that involve API development, gRPC, Kafka, Redis, Postgres etc.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Redis
    RabbitMQ
    Apache Kafka
    Docker
    Next.js
    G-Cloud
    API Development
    React
    Golang
    TypeScript
  • $28 hourly

    • 0.0/5
    • (1 job)
    ✨ Delivering high-quality work and clear communication is my top priority. 🔍 Searching for a React.js or Next.js developer, or a Senior Front-end Developer? You’re in the right place! 🖐 With 5 years of experience, I specialize in creating pixel-perfect, responsive web applications. 🌟 Core Skills: 🔹️ React.js | Next.js: Building dynamic, scalable web apps 🔹️ JavaScript | TypeScript: Ensuring robust code 🔹️ HTML5 | CSS3: Crafting semantic, responsive layouts 🔹️ Redux | Redux Toolkit | SWR : Efficient state management 🔹️ Bootstrap | Material-UI | Tailwind CSS: Modern, responsive UI design 🔹️ Mapbox | ApexCharts | Lottie : Maps, data visualization and animations 🛠️ Tools: 🔹️ Jest | Enzyme | React Testing Library: Comprehensive testing 🔹️ Webpack | Babel: Performance optimization and compatibility 🔹️ Figma | Adobe XD: Translating designs into functional code 🔹️ ESLint | Prettier: Code quality and formatting 🔹️ CI/CD Tools: Jenkins, Travis CI, GitHub Actions 🔧 Backend Proficiency: 🔹️ Node.js: Server-side solutions 🔹️ Express.js: Building robust APIs 🔹️ MySQL | MongoDB: Database management 🔄 Version Control & Collaboration: 🔹️ Git | GitHub | GitLab | Bitbucket: Advanced version control 🔹️ Branching Strategies | Merge Conflicts Resolution: Effective code management 🔹️ Code Reviews | Jira | Confluence: Project management and documentation 🚀 Focused on front-end development but adept at handling back-end tasks for seamless integration. 💬 Ready to discuss your project and drive your success? Feel free to reach out! 🌟
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    React Native
    Git
    Babel
    Mapbox
    webpack
    Node.js
    Jest
    Material UI
    Tailwind UI
    Bootstrap
    Redux
    CSS
    HTML5
    TypeScript
    React
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    I am a passionate and high quality full stack developer with skills in: - React-Native using JS & Typescript - iOS using Swift & Objective-C - Android using Java & Kotlin - ReactJs and NodeJs I have professional experience in building, integrating, testing and supporting mobile and web applications. I have solid understanding of mobile and web development life cycle, user interface designing and quality assurance. During my 4 years experience with mobile applications development. following features/tools/techniques: - Realtime location & chats - Restful APIs - BLE Bluetooth connectivity and characteristics read & wirtes - react-native, react-native-router-flux - publishing app to both stores - redux, redux-thunk, redux-saga Similar as web& backend developer I've also written NodeJs api's for some of the applications. Thank you in advance for your time and consideration, I look forward to working with you soon.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Android App Development
    Flutter
    React Native
    Node.js
    Firebase
    Swift
  • $20 hourly

    • 0.0/5
    • (0 jobs)
    I am a programmer who likes to find solutions to problems. I work in an orderly and structured way. Knows Html, CSS, Php, Bootstrap, C#, JavaScript. Microsoft Dynamics CRM, C++
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Azure DevOps
    Microsoft PowerPoint
    Microsoft Excel
    Microsoft Word
    C++
    HTML
    Bootstrap
    C
    SQL
    PHP
    C#
  • $29 hourly

    • 0.0/5
    • (0 jobs)
    I’m a results-driven Full Stack Developer with over a decade of professional commercial experience delivering innovative web applications and AI-powered solutions. Specializing in React, Node.js, Next.js, Nest.js, and cutting-edge AI integrations, I help businesses scale and thrive by creating reliable, high-performance software tailored to their unique needs. As a Full Stack Web Developer, I provide: 🌟 Frontend Expertise: Crafting responsive, user-centric interfaces with React, Next.js, TailwindCSS, and Material-UI to deliver seamless user experiences. 🌟 Backend Engineering: Developing scalable, secure APIs and backend systems using Node.js, Express.js, and Nest.js. 🌟 AI-Driven Solutions: Implementing AI tools like ChatGPT, OpenAI APIs, and machine learning models to automate processes and drive business innovation. 🌟 API Integrations: Mastery in integrating third-party APIs (e.g., Stripe, Zoom, OpenAI, Twilio) to connect and enhance your platform’s functionality. 🌟 AWS Expertise: Designing and deploying cloud solutions with AWS services such as S3, EC2, Lambda, and DynamoDB to ensure scalability and reliability. 🌟 Custom Web Applications: Building SaaS products, CRMs, ERPs, marketplaces, and proof-of-concept solutions tailored to your industry. Technologies: Frontend: React.js, Next.js, TailwindCSS, Material-UI, HTML5, CSS3, SASS, Bootstrap Backend: Node.js, Nest.js, Express.js, RESTful APIs, WebSockets, GraphQL Databases: MongoDB, PostgreSQL, DynamoDB, Firebase, SQLite Cloud: AWS (S3, EC2, Lambda, DynamoDB), Firebase Cloud Services DevOps: Docker, Kubernetes, CI/CD Pipelines, Nginx AI & Integrations: OpenAI APIs, ChatGPT, Stripe API, Twilio API, Zoom API Tools: Webpack, Ant Design, Jest, Git, Visual Studio Code Why Work With Me? 🏆 Proven track record of delivering high-quality web apps for industries including e-commerce, healthcare, and fintech. 🏆 Experience with optimizing performance, SEO, and cloud-based deployments using AWS, Firebase, and modern DevOps tools. 🏆 Strong focus on clear communication and collaboration to ensure your vision becomes reality. Ready to elevate your project with cutting-edge web solutions? Let’s bring your ideas to life! 🚀 Flexibility & Collaboration I’m always ready to collaborate as part of a mixed team, including developers specializing in Angular, Laravel, Ruby on Rails, Spring Framework, PHP, or Java, even though I’m not an expert in these technologies and don’t actively work with them. My focus remains on React, Node.js, Next.js, and Nest.js, where I bring deep expertise and significant value. I seamlessly integrate into cross-functional teams to achieve project goals and deliver exceptional results.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    API Integration
    Front-End Development
    Full-Stack Development
    Web Application
    PostgreSQL
    Amazon Web Services
    Web Development
    MongoDB
    ExpressJS
    NestJS
    Node.js
    Next.js
    TypeScript
    React
  • $5 hourly

    • 0.0/5
    • (0 jobs)
    Hi 👋 I'm Chris, a software developer based in Cluj-Napoca, Romania. I specialize in creating websites and apps that not only look great but also work flawlessly. Whether it's crafting a sleek website or developing a responsive mobile app, my approach centers around delivering the best user experience possible. Let's work together to make digital interactions seamless and enjoyable for all!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Python
    TypeScript
    Mobile Game
    International Development
    Product Development
    Mobile App Development
    Android App Development
    Mobile App
    iOS Development
    App Development
    Web Application
    Web Development
  • $10 hourly

    • 0.0/5
    • (1 job)
    Committed to producing visually appealing, clean graphics that set my clients apart from the competition. Looking for challenging projects and opportunities to help businesses achieve their marketing goals through engaging visual designs. If you value elegant and compelling graphic works, delivered quickly, then you would love working with me.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Sony Vegas
    HTML
    jQuery
    Adobe Illustrator
    Adobe Photoshop
  • $15 hourly

    • 5.0/5
    • (4 jobs)
    I am a passionate software developer with a deep understanding of programming concepts. I have more than two years of work experience as a developer and a diversified portfolio of projects. I am a self-motivated, competitive, reliable, responsible and hard working person.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    .NET Framework
    Git
    ExpressJS
    React
    Bash
    Bash Programming
    Node.js
    MongoDB
    Java
    C++
    C#
    CSS 3
    CSS
    HTML5
    HTML
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    I am a senior full stack developer with 8+ years of experience supporting High Quality work and the fastest support. Specialize in creating websites and minting NFTs, which are customized and fully enriched for ultimate digital experience. I create highly user-friendly static and dynamic types of websites and products without compromising the overall look and feel of the website. Why choose me? ★ 8+ Years of experience ★ 100% satisfaction assured ★ Technological Excellence across platforms ★ Thoughtful and futuristic software and web development ★ 100% trusted team ★ Long term relationships!! ★ Enough work experience in working with Price Comparison website , Buy & Sell currency Exchange website, Doctor / Service Provider Website, E-Book Website, Property Website, Hotel, Restaurant Booking and Shopping website ... Professional Skills: ✔️Fullstack ✓ frontend: HTML, CSS, Javascript, Bootstrap, Sass, React/Redux, Typescript, Vue, Angular ✓ backend: Nodejs, PHP, Python, C# ✓ Database: MongoDB, MySQL, PostgreSQL ✓ framework: WordPress/WooCommerce, Laravel, MERN, MEAN, Django ✓ Design: Logo, Web Responsive , Mockup, Brochure ✓ Github, Heroku ✓ Software Analysis, UI/UX Design, Graphic Design ✓ AWS, Google cloud I give my 100% focus on even small details of the project and make it perfect. My goal is to do a project successfully by keeping high quality of work at a fair price. I am elementary and flexible to work. Best Regards!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Shopify
    Ecommerce
    RESTful API
    C#
    MongoDB
    React
    Java
    MySQL
    Node.js
    PostgreSQL
    GraphQL
    Python
    TypeScript
    PHP
  • $5 hourly

    • 0.0/5
    • (0 jobs)
    I'm a Full-Stack developer, i can build websites for small and medium sized businesses. I’m experienced in HTML,CSS 3, PHP, jQuery, WordPress, Laravel, Opencart and more. Communication is very important to me.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    NodeJS Framework
    Angular
    Full-Stack Development
    Web Development
    Bootstrap
    Laravel
  • $20 hourly

    • 3.3/5
    • (1 job)
    I strongly believe that a win-win situation is reachable only for persons who really know what they want. Therefore, if you need a skilled person in PhP, JS, JQUERY, CSS, HTML and MySQL, I am the one you are looking for. Also I can perform at my best on LARAVEL framework and platforms like WORDPRESS and OPENCART. And because SEO ON PAGE / OFF PAGE and Adwords are strongly related with websites developing, actually the next logical step, I assure you that I will not fail. All I need is the opportunity to prove my skills and complete projects!
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    OpenCart
    PHP
    Laravel
    CSS 3
    HTML5
    WordPress
    Node.js
    AJAX
    jQuery
  • $7 hourly

    • 0.0/5
    • (0 jobs)
    👋 Hi, there! I’m Stefan! 👨‍💻 I'm a second-year Computer Science student, passionate about creating high-quality websites and learning new technologies. I’m here on Upwork to gain more experience and broaden my skill set while delivering exceptional work for my clients. Here’s What I Can Do for You: 🌟 Website Development ✅ Build WordPress websites ✅ Create fully responsive (Mobile + Tablet + Desktop) websites ✅ Add animation effects and sliders (SVG, Lottie Files, interactive elements) 🌟 UI/UX Design ✅ Redesign existing websites or create new ones ✅ Conduct user research and analysis to understand target audience needs ✅ Create wireframes and prototypes (low-fidelity and high-fidelity) ✅ Design intuitive and user-friendly interfaces 🌟 SEO & Optimization ✅ Make your site SEO-friendly ✅ Speed optimization for better performance ✅ SEO-friendly structure and layout 🌟 Website Maintenance & Support ✅ Fix WordPress issues ✅ Migrate websites between domains/hosts ✅ Set up SSL certificates for secure websites ✅ Remove malware and resolve bugs My Skills Include: * Website Platforms: WordPress, Webflow, Wix * Page Builders: Elementor, Divi, Oxygen Builder, Beaver Builder * Web Hosting Control Panel: cPanel * Figma (low-fi and high-fi prototyping) * Programming: HTML, CSS, JavaScript * UI/UX principles knowledge gained through the Google UX Design course * Plugin development and customization * Multisite setup and multi-language solutions * Front-end and back-end development * Speed optimization * Business-focused solutions What Sets Me Apart: * Attention to Detail: Pixel-perfect designs that match your business vision. * Up-to-Date Knowledge: Staying ahead of trends and tools. * Flexible & Diligent: I adapt to your needs and work with dedication to deliver results. * Client Growth-Focused: My aim is to help your business grow and thrive. 🎯 Ready to bring your ideas to life? Let’s connect and create something amazing together! 🔑 𝐊𝐄𝐘𝐖𝐎𝐑𝐃: Web Design, Web Development, WordPress, Website, WordPress Expert, WordPress Website Development, WordPress Website Design, WordPress Developer, WordPress Designer, Responsive Design, HTML, CSS, PHP, JavaScript, CSS 3, Elementor Pro, WordPress Website, WordPress Development, WordPress Customization, WordPress Theme, WordPress Plugin, Plugin Development, WordPress e-Commerce, WordPress SEO, WooCommerce, Website Redesign, WordPress Malware Removal, e-Commerce Website, Figma, Figma to WordPress, Web Designer, UI Design, Bug Fix, Landing Page, Mockup, Frontend Development, Backend Development, Elementor, Web Development, PSD to WordPress, HTML5, AngularJS, Gravity Form, Slider Revolution, MailChimp, Adobe XD, Laravel, Divi, LearnDash, Page Speed Optimization, Search Engine Optimization, Website Customization, WordPress e-Commerce Website, On-page SEO, Web Application, WordPress Site, Visual Communication, Web component Design, Adaptive Web Design, Web Analytics Bug Fix, Web Analytics Report, Web Accessibility, User Flow, Product Design, Branding, Typography, Social Media Imagery, Adobe InDesign, User Interface Design, UI/UX Prototyping, Brand Identity & Guideline, Web Page, UX & UI Design, CMS Development, User Experience Design, WordPress SEO, WordPress Migration, WordPress Specialist
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Yoast SEO
    WordPress Theme
    WordPress Optimization
    WordPress Customization
    WordPress Bug Fix
    WordPress Plugin
    Design Mockup
    Web Development
    Figma
    CSS
    HTML
    WooCommerce
    WordPress Development
    WordPress
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