Hire the Best React.js Developers
in Romania

Clients rate our React.js developers
Rating is 4.8 out of 5.
4.8/5
Based on 201 client reviews
Roman H.

Suceava, Romania

$45/hr
5.0
2 jobs

๐Ÿ‘‹ Need a python Full stack developer and Python AI Developer who can ship production-ready AI products, not just prototypes? I'm Roman, a Python Full stack Developer and Python AI developer with 5+ years in scalable web development and 2+ years in AI/ML. I have built AI systems for skincare, corporate LMS, real estate and SaaS, including a multilingual assistant for a company with 100+ branches and an AI SaaS chatbot platform built over 11 months. What I can help with: โœ“ AI chatbot development with RAG, memory and business logic โœ“ OpenAI / Claude / LLaMA integrations for SaaS, CRM, support, and internal tools โœ“ AI agents trained on company documentation, knowledge bases, and enterprise data โœ“ python fastapi API development for scalable AI backends โœ“ React / Next.js dashboards connected to Python AI systems โœ“ Database architecture, API integration, cloud deployment, and performance optimization โœ“ Custom machine learning workflows, benchmarking, Data Scraping, data pipelines and analytics โšกMy work combines python full stack engineering, python fastapi backends, LLM architecture and business-focused Software Development that reduces manual work and improves user experience. As a python full stack developer, I build full-cycle products from database design and API architecture to React / Next.js interfaces, deployment and long-term optimization. My core stack includes python full stack, Python Fastapi, Flask, Django, Node.js, React, JavaScript, TypeScript, PostgreSQL, SQL, MongoDB, Supabase, AWS, Azure, Vercel, REST APIs, WebSockets, Docker, Tailwind CSS, Material UI, and Git. As a Python AI Developer, I create AI chatbots, RAG systems, AI agents, document intelligence tools, recommendation engines, and automation workflows. I work with OpenAI, Claude, LLaMA, LangChain, LangGraph, LlamaIndex, vector databases, prompt engineering, ReAct agents, and llm integration for real business use cases. ๐Ÿค– AI/ML Solutions I Build ๐Ÿ“Œ LLM-Powered Applications โ†’ Custom AI chatbots with RAG (Retrieval-Augmented Generation) โ†’ Multi-agent systems using LangChain & LangGraph โ†’ Context-aware conversational AI that maintains conversation flow โ†’ Integration with GPT-4, Claude, LLaMA models ๐Ÿ“Œ Intelligent Automation & Agents โ†’ ReAct systems (Reasoning + Acting) for complex workflows โ†’ Document parsing and knowledge extraction (LlamaIndex) โ†’ AI agents trained on internal documentation and enterprise data โ†’ Multi-language support with automatic language detection ๐Ÿ“Œ Smart Recommendations & Analysis โ†’ AI-powered recommendation engines โ†’ Image analysis and classification systems โ†’ Custom ML models for specific business use cases โ†’ Performance optimization for production environments ๐Ÿ“Œ Full-Stack Integration โ†’ RESTful API development and integration โ†’ Real-time data handling with WebSockets โ†’ Database design (PostgreSQL, MongoDB, Supabase) โ†’ Cloud deployment (AWS, Azure, Vercel) ๐Ÿ’ก Recent AI Projects & Real Results Recent work includes an AI skincare recommendation system that analyzes customer inputs and recommends products, a corporate LMS AI assistant for 100+ branches, a real estate rental assistant using landmarks and neighborhoods instead of only addresses, and a full-stack SaaS AI chatbot platform with multi-agent logic and RAG capabilities. ๐Ÿ› ๏ธ Technical Stack My experience covers product engineering and AI development. On the engineering side, I build SaaS platforms, dashboards, APIs, admin panels and automation systems as a python full stack developer ( backend python developer ) backend developer and web developer. On the AI side, I work as a Python AI developer and AI Developer, supporting chatbots, RAG systems, llm integration, OpenAI workflows, benchmarking, machine learning and data science tasks for real business use cases. โšกMy approach is simple: clarify the business problem, design cost-conscious architecture, build clean and maintainable code, show progress through regular demos, and transfer knowledge so your team can use and maintain the system confidently. Additional relevant experience: I have worked around startup products and teams involving laravel, PHP, wordpress, sharepoint, moodle lti, flutter, Vue.js, material ui, HTML5, html front end, payment gateway, back end development, full stack developer react, full stack java, marketing saas, mls, mls idx, real estate photo, ai video, crypto bot, trading python, dask, pandas, data entry, oxwall, qa analyst, ux designer, product manager, it consultant, seo specialist, journalist content workflows, technical resume writing, python full stack, python fastapi, python ai, llm integration, openai, and custom business automation. ๐ŸคIf you need a reliable python full stack developer who can own the full product workflow, or a python ai developer who can build practical AI systems with python fastapi, python ai, llm integration, openai, and scalable architecture, send me a message and letโ€™s discuss your project.

  • React
  • JavaScript
  • Data Scraping
  • Python
  • CSS
  • Django
  • Docker
  • HTML
  • Node.js
  • PHP
  • PostgreSQL
  • SQL
  • HTML5
  • MongoDB
  • Flask
  • Vue.js
  • Git
  • API
  • Software Development
  • Bootstrap
Alex S.

Pitesti, Romania

$8/hr
5.0
1 jobs

Motivated and detail-oriented Full-Stack Web Developer with hands-on experience designing and deploying responsive, high-performance web applications. Skilled in React.js, Next.js, Node.js, and PostgreSQL, with experience in modern DevOps tools like Docker and Jenkins. Passionate about clean code, teamwork, and continuous learning.

  • React
  • Node.js
  • MySQL
  • PHP
  • ExpressJS
  • Next.js
  • Golang
  • Java
  • Python
Flaviu Sergiu J.

Oradea, Romania

$40/hr
5.0
42 jobs

Full stack software engineer mastering: NodeJS, MySQL, Redis, MongoDB, AWS services for backend and HTML5, CSS3 and Javascript ( reactjs ). I am able to build complex architectures with NodeJS, RestAPI(Express, Koa, Fastify) and GraphQL, MySQL, MongoDB, PostgreSQL, Redis, AWS Services like S3, Cloudfront, SQS, Lambda, API Gateway, Elasticsearch etc. I am very familiar using tools like: Typescript, BabelJS, Webpack, Grunt, Gulp. I can implement various services using serverless architecture with API Gateway, S3, Lambda. Strong experience in optimising MySQL queries and structures.

  • JavaScript
  • Sequelize
  • Browser Extension
  • Mongoose
  • RESTful API
  • Node.js
  • Laravel
  • MongoDB
  • PHP
  • API Integration
  • Amazon Plugin
  • PayPal Integration
  • GraphQL
  • DevOps
  • Relational Database
  • ExpressJS
  • Stripe
Teodor S.

Saldabagiu de Munte, Romania

$60/hr
4.9
5 jobs

โœ… Senior Full Stack Developer | Scalable, High-Performance Web Solutions With over 5 years of experience, I specialize in building high-impact, scalable, and conversion-driven web applications that help businesses thrive. Whether itโ€™s a SaaS platform, e-commerce store, presentation website, or a custom-built solution, I deliver fast, modern, and user-friendly experiences tailored to your needs. ๐Ÿ”น Front-End Excellence: Next.js, React.js, Tailwind CSS, Shadcn UI ๐Ÿ”น Back-End Power: Node.js, MongoDB, Stripe ๐Ÿ”น Robust Architecture: TypeScript for scalable and maintainable code I donโ€™t just build websites, I create digital experiences that engage users, increase revenue, and optimize business operations. Letโ€™s discuss how I can bring your vision to life. ๐Ÿ“ฉ Letโ€™s build something amazing!

  • Responsive Design
  • React
  • JavaScript
  • Search Engine Optimization
  • Next.js
  • Tailwind CSS
  • Bootstrap
  • Twig
  • HTML
  • CSS
  • jQuery
  • Git
  • Web Development
  • Front-End Development
  • WordPress
Sorin M.

Arad, Romania

$15/hr
5.0
9 jobs

Iโ€™m Sorin and I create beautiful websites in React/NextJS. I specialize in building web pages using React and NextJS (6+), and I can ๐—ฃ๐—ฅ๐—ข๐— ๐—œ๐—ฆ๐—˜ that youโ€™ll be pleased with the ๐—ค๐—จ๐—”๐—Ÿ๐—œ๐—ง๐—ฌ of my work. My ๐Ÿฑ-โญ profile shows that working with me has been a pleasure for my clients and it could be the same for you if you make the right choice.โ€จโ€จ Hereโ€™s what Iโ€™m really good at: - ๐Ÿค Quickly getting comfortable and working well, whether Iโ€™m on my own or with others - ๐Ÿš€ Making sure everything runs super fast - ๐Ÿค“ Noticing even the tiniest details - ๐Ÿงฑ Building parts that can be used again and again - ๐Ÿ–ฅ๏ธ Making websites look great and work perfectly on any screen, big or small - โœจ Keeping my work neat and easy to grow - ๐Ÿ‘‚ Talking clearly and listening well to understand whatโ€™s needed - โญ Creating a 5-star project every time You have the budget for your project, but you can't afford to waste time hiring a second developer for the same task. If you're looking for ๐—›๐—œ๐—š๐—›-๐—ค๐—จ๐—”๐—Ÿ๐—œ๐—ง๐—ฌ React and Next.js projects, ๐—ฃ๐—œ๐—ซ๐—˜๐—Ÿ-๐—ฃ๐—ฅ๐—˜๐—™๐—˜๐—–๐—ง websites, and a ๐—ฆ๐— ๐—ข๐—ข๐—ง๐—›, ๐—–๐—ข๐—Ÿ๐—Ÿ๐—”๐—•๐—ข๐—ฅ๐—”๐—ง๐—œ๐—ฉ๐—˜ experience with your developer, feel free to reach out to me.

  • React Native
  • React
  • MongoDB
  • Redux
  • Firebase
  • Redux Saga
Andrei S.

Iasi, Romania

$45/hr
5.0
54 jobs

Driven by the philosophy that every project it's unique and needs a different approach, I try to deliver the best solutions to worldwide clients at decent prices and reasonable time frames. My expertise area allows me to provide complete solutions for Web Applications which includes Server Configuration (Linux and Windows), Database Design (MySQL, MSSQL, MongoDB), Server Programming (PHP, Wordpress, Magento, Drupal, Joomla!, Laravel, CodeIgniter) and Front-end Developing (HTML5, CSS3, Javascript, jQuery, Angular JS, Twitter Bootstrap, ReactJs). All the projects that I develop are including: - the latest technologies; - clean and optimized programming; - quality assurance testing; - password protected staging server; - cross browser, cross operating system and cross device compatibility; - hosting services or support to choose the right hosting solution if needed.

  • React Native
  • React
  • JavaScript
  • Vue.js
  • HTML5
  • jQuery
  • Shopify
  • Laravel
  • PHP
  • CSS 3
  • CSS
  • TypeScript
  • Angular 5
  • CodeIgniter

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

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

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

Resources to help you hire

Cost to hire a React.js Developer

Cost to hire a React.js Developer

Explore typical React.js Developer rates and what businesses pay to hire top talent.

React.js Developer job description template

React.js Developer job description template

Get tips to write a job post that attracts qualified React.js developers.

React.js Developer interview questions

React.js Developer interview questions

Top interview questions to help you hire the right React.js developers, faster.

How do I hire a React.js Developer in Romania on Upwork?

You can hire a React.js Developer in Romania on Upwork in four simple steps:

  • Create a job post tailored to your React.js Developer project scope. We'll walk you through the process step by step.
  • Browse top React.js Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top React.js Developer profiles and interview.
  • Hire the right React.js 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 React.js Developer?

Rates charged by React.js 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 React.js Developer in Romania on Upwork?

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

Can I hire a React.js Developer in Romania 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 React.js Developer proposals within 24 hours of posting a job description.