Hire the best React.js Developers in San Francisco, CA

Check out React.js Developers in San Francisco, CA with the skills you need for your next job.
Clients rate React.js developers
Rating is 4.8 out of 5.
4.8/5
based on 593 client reviews
  • $75 hourly
    A Senior Software Engineer with a strong background in developing innovative APIs and software applications. My expertise lies in JavaScript, TypeScript, Node.js(NestJS/Express.js/Strapi), React, Next.js, Vercel, React Native, Tailwind CSS, HTML5/CSS3, Material UI, AngularJS/Angular, Ruby on Rails, Python/Django, FastAPI, Hubspot, and Restful APIs, among others. I have a proven track record of successfully integrating digital applications with physical devices, focusing on scalability, security, and interoperability. I've worked closely with cross-functional teams to align API development with user requirements and mission objectives. My innovative approach to connectivity challenges has resulted in improved device communication and user experience. I'm skilled in implementing rigorous testing and optimization to ensure API stability and performance. My experience also includes designing and developing desktop applications, incorporating machine learning techniques, and ensuring data security and privacy. I'm proficient in utilizing AWS, Electron, and GitHub Actions for cloud-based services, native desktop environments, and CI/CD. The projects I contributed have received positive feedback for their innovative approach to accessibility and data security.
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    FastAPI
    Django
    Ruby on Rails
    RESTful API
    Amazon Web Services
    ExpressJS
    NestJS
    Web Development
    Web Application
    Next.js
    Node.js
    TypeScript
    Java
    Python
    React
  • $45 hourly
    Full Stack developer who worked at Nokia, Goodyear, worked at 2 FinTech startups and created social media apps, similar to Twitter for web developers (Yes 🙃 it does have free "Edit" button.) DM chat, avatars and image uploads in timeline, retweet feature, delete tweet (I use CRUD pattern for API calls.) Worked at 10 start-up companies in Web Development industry (Including lead UI developer at a project for GoodYear Tire Co.) and with skills developed there I decided to take Freelance path for now. Not being attached to a company gives me freedom I need. UI Web Developer proficient in React.js, Node.js, NPM, Babel, WebPack, JavaScript, some PHP. Solid knowledge of MySQL and MongoDB, Node.js, some Python. Primary experience is custom user interface development for large scale applications. Worked for Good Year tire company, DropShip Direct, and few others. Programming, developing new features from scratch, or upgrading or modifying existing code.
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    MERN Stack
    Flutter
    Mobile Web
    NodeJS Framework
    Mobile App
    FinTech
    FinTech Consulting
    Web Development
    PHP
    Vue.js
    JavaScript
    MongoDB
    MySQL
    React
    Node.js
  • $45 hourly
    As a Full-Stack Software Development Engineer (SDE) and proven SEO Content Writer, I specialize in providing technology-driven solutions for businesses looking to improve their online presence. My client base includes: - Dubai Investment Funds - Incogniton - Argoid AI - Concert Archives - Touchzing Media - Fullpage JS, and many more. 👨🏽‍💻 With my tech stack, including TypeScript, Javascript, React, MongoDB, MySQL, Node.js, Git, AWS Lambda, and more, I can create stunning websites and web applications that are both user-centric and performance-driven. I have worked with a diverse range of clients across different industries and have a proven track record of delivering robust and scalable solutions to achieve their business goals and customer satisfaction. Whether you need to build a new web app from scratch or optimize an existing one, I am available to help. 📚 As a top-rated SEO Content Writer, I have a verifiable case study of over 500% traffic increase within 90 days. I’ve been able to 10x website traffic for my clients with my articles, including some that have been published in International news media (verifiable). My writing services are available to sell your brand, products, and stories to target audiences, eventually solving your marketing problems with optimized content. Somehow, I was able to deliver top-notch content here as I ramped up my software engineering skillset, and now more than ever, I can boast of knowing what’s best for your users with my insight from both sides of the table. The Business-end and The Engineering end. For more insight into what I offer, take a look at my specialised profiles👨🏽‍💻, reviews📈, and portfolio 💼. Then we get started!
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    React Native
    React
    NodeJS Framework
    Web UI
    Web3
    Web Development
    Back-End Development
    Full-Stack Development
    Front-End Development
    ExpressJS
    Next.js
    TypeScript
    JavaScript
    SEO Writing
    Search Engine Optimization
  • $70 hourly
    Hi there and thanks for checking my profile. It all started 11 years ago when I developed my first flash game using Action Script 1. Don’t know when this happened exactly, but I became addicted to development and now, most of the time, you’ll find me advising startups on PHP development strategy, making external code review, saving MVPs crashed after first dense traffic encounter or checking fresh releases of most mature web dev tools like AngularJS and Symfony2. So whether you have an idea, working version, which is not bringing it to the limit, or you are not really sure if the code is cool - just let me know and I’ll be glad to help you with any tech aspects. I love talking to clients and meeting them in person is even better, so let me know if you plan visiting San Francisco, Los Angeles or Krakow (Poland) in the nearest future.
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    Shopify Theme
    Shopify Plus
    Twitter/X Bootstrap
    Symfony
    Swell
    Hugo
    Liquid
    BigCommerce
    Shopify
    HTML5
    PHP
    React
  • $45 hourly
    ⭐⭐⭐⭐⭐ Top 1% Developer on Upwork 🏆 🏆 🏆 🏆 🏆 Top 2023 AI Company 1️⃣8️⃣ Years of Experience | Looking for a dedicated, reliable team or a powerhouse developer? Your quest ends here! Welcome to my profile🚀 ⭐Top Rated Plus Upwork Contractor ⭐Spearheading one of the Top AI Companies on Upwork ⭐Partnered with over 50 Upwork clients, successfully executing more than 50 high-quality projects. Leveraging 18 years of experience in web development and 8 years in team leadership, I specialize in crafting seamless, performant interfaces and websites that drive tangible results. Skills I bring to the table🧩: • Mastery in ReactJS, Redux, GraphQL, NextJS, GatsbyJS, VueJS. • Expertise in JavaScript (ES6-ES8), TypeScript. • Proficient in Redux, Redux-Saga. • Experienced in NodeJS, Express, NestJS, NextJS. • Database knowledge: MongoDB, PostgreSQL, MySQL. • Skilled in Scss, Sass, PostCSS, HTML5, CSS3. • Building maintainable design systems with Storybook. • Client-side performance including AMP and PWA apps. • Expertise in Accessibility, 508 Compliance, SEO Optimization. • Cross-browser/cross-platform testing. • Automation QA: Cypress, Puppeteer, Playwright, Jest, Selenium. • Proficient in tooling: Webpack, Git, NPM. Happy Clients Speak📣: "Bernardo and his team bent over backward for this project. The project management and execution were awesome. We will definitely use them again." - Occam Tech "Bernardo is the best front end developer we've worked with. Was a pleasure working with him and will plan on continuing to do so." - Novo "Bernardo has been a pleasure to work with. Will continue to utilize him in future projects when the needs arise." - Cellular Outfitter My Services Include💼: • Dedicated team or a single engineer with a project manager • End-to-end software development • Building robust Design Systems for a consistent UI experience • Automation and manual testing for a bug-free application My Agile Process✅: Understanding your requirements and creating a project roadmap. Weekly sprints, with QA for each feature implemented. Continual Deployment for instant review of changes. Regular updates to keep you in the loop! Ready to unlock the power of AI for your business with a seasoned web architect? Let's talk📞
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    Prompt Engineering
    Chatbot
    GPT-4
    Conversational AI
    Bot Development
    Artificial Intelligence
    Node.js
    Shopify
    Stripe
    TypeScript
    Next.js
    React Native
    NestJS
    React
    ChatGPT
  • $75 hourly
    I am a highly professional creative designer with expertise in 3D modeling and parametric design. I specialize in using powerful software such as Rhinoceros 3D, Grasshopper, and Blender, and I bring extensive knowledge of Python programming to enhance my design process. What sets me apart is my ability to combine technical proficiency with artistic vision, delivering exceptional designs that exceed client expectations. I excel at utilizing Python scripting to automate tasks, develop custom design algorithms, and streamline workflows, ensuring efficiency and accuracy throughout the design process. My keen attention to detail and commitment to delivering high-quality work allow me to create captivating designs that make a lasting impact. With a collaborative approach, I prioritize effective communication and a deep understanding of client objectives. By actively listening to their needs and ideas, I ensure that the final designs not only meet but exceed expectations. Whether it's generating complex geometries, creating custom design tools, or automating intricate processes, I am dedicated to producing outstanding results within agreed-upon timelines. If you are seeking a highly skilled designer who combines expertise in 3D modeling and parametric design with proficiency in Python programming and software such as Rhinoceros 3D, Grasshopper, and Blender, I am here to transform your vision into reality. Let's collaborate on creating visually stunning and technically advanced 3D models that captivate and inspire. Contact me today to discuss your project requirements and unlock its full potential.
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    JavaScript
    Showcase Website
    3D File Format
    Three.js
    React
    3D Product Rendering
    Parametric Design
    Automation
    3D Animation
    Python
    3D Rendering
    Blender
    Grasshopper 3D
    3D Modeling
    Rhinoceros 3D
  • $80 hourly
    ✅ 5 years of overall programming experience. 💼 Fullstack software engineer in SF-based leading start-up, Tomocredit. 🎓 B.Sc in Computer Science. As a highly experienced Software Engineer, I bring a wealth of knowledge to the table in developing web applications and websites using various programming languages. I am known for my creative problem-solving skills, excellent communication, and effective time management. My areas of expertise include: - Website & Web App Development - Mobile App Development - Backend Development I am proactive and take the initiative in challenging situations, always seeking to improve the end product and bring new ideas to the table. I am eager to discuss your project and demonstrate how I can contribute to your success with my technical expertise and problem-solving abilities. I look forward to discussing your project soon!
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    RESTful API
    SQL
    Websockets
    React
    Node.js
    GraphQL
    React Native
    Firebase
    TypeScript
    JavaScript
    MongoDB
  • $120 hourly
    I am a Front-End software engineer with seven years of commercial working experience. Currently, I specialize in cross-platform mobile development. I have a strong knowledge of data structures, algorithms, software engineering practices and software development lifecycle, including coding standards, code reviews, source control management, build processes, testing, and operations. Strong problem-solving skills and are comfortable dealing with ambiguity. I am familiar with most major programming languages, including JavaScript/Typescript, Swift, Objective-C, Python, C, C++, C#, Yaml, and Java. Strong knowledge of JavaScript/Typescript, HTML5, CSS3, Python, UNIX/Linux Technologies: React, React Native, Node.js, StoryBook, Redux, MobX, i18n, Sockets, Electron Tools: VSCode, Xcode, Git, Jira, Slack, Confluence, Atlassian, CircleCi, Fastlane, ESLint, Jest, Webpack
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    Redux
    Mobx
    React Native
    SQLite Programming
    React
    GitHub
    Node.js
    API Integration
    iOS
    TypeScript
    Mobile UI Design
    Android
  • $50 hourly
    Background: Hi there, I'm a full-stack data and software engineer with experience in designing and building highly scalable data and web/mobile-based applications. I can own technical responsibilities from setting up backend services. ETL/ELT pipelines, data warehouses/lakes, to building out business applications for analytics, automation, prediction, and beyond. Education: Bachelor of Engineering (BEng) in Computer Engineering at the University of Illinois at Urbana-Champaign (UIUC) Master of Computer Science (MSCS), Computer Science at Harvard Tech Stack: • Programming Languages: Javascript, Typescript, Java, Python, C#, Ruby • Web Development: HTML5, CSS3, React/Vue, Redux/Vuex, Node.js, jQuery, Ruby on Rails • Technologies: Restful API, GCP/AWS, Git, RabbitMQ, Docker, Jenkins, OpenGL, HDFS, Kafka, GraphQL • Database: MySQL, PostgreSQL, MongoDB, Cassandra, Datastore, BigQuery, Snowflake, Redshift: MySQL, PostgreSQL, MongoDB, Cassandra, Datastore, BigQuery, Snowflake, Redshift
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    Vue.js
    Mobile App
    Web Application
    CSS
    Node.js
    Low-Code Development
    React
    API Integration
    SQL
    Python
  • $35 hourly
    Top Rated Plus full-stack engineer here who has experience working on web/mobile applications development with the latest technologies, and I'm always happy to discuss my client's needs and find the best solutions for them. I have been working professionally as both a front-end and back-end developer for 9+ years. Technologies I work with: - PHP (Laravel, Codeignitor & Symphony) - WordPress & Woocommerce - Shopify Stores & Apps - WIX | Squarespace | Bubble - JavaScript - Graphql & Express - Nextjs & Nestjs - React.js & Node.js - React Native - MySQL, MongoDB, Firebase - Various AWS services - Git, GitHub, Bitbucket - GCP, Digital Ocean, Heroku, Netlify, Firebase, Rackspace I'm focused on the revolutionary stack and have a firm grip over MERN & MEAN stack development. To whom I help: - Multi Vendor E-commerce Businesses - Entrepunures - Startups - Maintenance - Scalability - SaaS Companies - MVPs for Funded Startups - Small to Large Businesses Pain points that I help solve: - You need to have a more efficient business by eliminating tedious manual labor and increasing your revenue by saving dozens of human hours. - You need to plan and build a web or mobile app from scratch. Some accomplishments: - $40 MM+ of funding for web/mobile apps I helped our clients launch - Ranked No.1 App Development Companies in San Francisco - Top 10 Best Mobile Development in San Francisco - Worked with clients like Samsung, Harvard, and Indeed What do I expect from my clients? - Having a solid idea of the vision they have and industry domain expertise - Having open and clear communication - Ability to provide feedback in a timely manner - Values integrity and relationships MY WORKING HOURS: 8 am - 5 pm (Pacific Standard Time), Monday – Friday. I look forward to learning more about your project. Please drop me a short line to find out how I can help you. You’ll hear back from me within one business day if not hours. I have good communication skills and always updated my clients on their ongoing work. I would love to work with you and build a useful product together. Best Regards, Awais Panhwar.
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    Smart Contract
    Blockchain
    Solidity
    React
    WooCommerce
    Laravel
    Website Redesign
    HTML5
    JavaScript
    Ecommerce Website
    UI/UX Prototyping
    Shopify Plus
    Front-End Development
    WordPress Development
  • $40 hourly
    I take initiative on building projects from ideation to production. Communication during a project is a number one priority with me, so you'll never feel left out throughout the whole process. I'm passionate about building software and have demonstrated experience solving problems from both a business and technical standpoint. I'm comfortable working across various technical stacks -- whether your needs are around provisioning cloud resources, working with authentication, 3rd party APIs, and handling data processing and analysis, or building intuitive user interfaces I've encountered it all. Send over a message and let's see what we can create!
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    Microsoft Windows PowerShell
    Microsoft Azure
    Python
    RESTful API
    CSS 3
    TypeScript
    Node.js
    React
    HTML
    Web Development
    JavaScript
    Responsive Design
  • $50 hourly
    I have a history of successful problem-solving across several fields. As a lawyer, I helped start my firm’s appellate practice group, handled important litigation for major corporate clients, and was asked to start a new firm in San Francisco. But in 2013, I decided to pursue my parallel interest in programming, working at a YC startup between 2014 and 2016 (MyVR), and founding my own health tech SAAS startup in 2016, which is still running profitably today. For this startup, I did all the programming, dev ops, copywriting, legal and regulatory tasks, and marketing, and was able to successfully transition from a profitable, bootstrapped company inside a medium-sized medical practice (with approximately 1000 user/patients) to our current role as a vendor for one of the top ten largest non-profit integrated health systems in the United States. Through all these different jobs, I’ve been able to quickly learn and integrate new knowledge and produce useful work products for a variety of clients and stakeholders. I’m confident that my unique fusion of skills – qualitative and quantitative, verbal and technical – can be valuable to many organizations.
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    Machine Learning
    Law
    Google Cloud Platform
    DevOps
    Python
    JavaScript
    React
    Angular
    Django
    MySQL
  • $50 hourly
    - Master's Computer Science from Northeastern University - 3 years' experience in developing full-stack applications. - Coding Languages: Python, JavaScript, Java, C - Other Language/tool: HTML, CSS, R, TailwindCSS, Bootstraps, Jira, Docker - Framework: Flask, React, Node, Express, AWS DynamoDB, MongoDB, MySQL, AWS Chalice - Native fluency in English and Chinese - 1 year Start-up experience: - Set up CI/CD pipelines with AWS Code Pipeline - Developed serverless applications with AWS Lambda and API Gateway using the AWS Chalice framework, - Configured domain servers with AWS Route 53.
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    User Interface Design
    API Development
    REST API
    Figma
    Jira
    AWS Lambda
    Java
    Flask
    Git
    CSS
    HTML
    TypeScript
    JavaScript
    React
    Python
  • $80 hourly
    Hi there! I’m a seasoned Full-Stack Software Developer with over 20 years of experience in the tech industry. I specialize in creating robust, scalable, and efficient web applications using modern technologies like React and Amazon Web Services (AWS). My extensive background in both front-end and back-end development allows me to deliver comprehensive solutions that meet my clients' unique needs. What I Offer: Fullstack Development: Expertise in building end-to-end web applications, from designing intuitive frontends to developing powerful backend services. Frontend Excellence: Proficient in React, HTML, CSS, and JavaScript to create responsive and user-friendly interfaces. Backend Mastery: Strong skills in Node.js, Java, and other backend technologies to build scalable and secure server-side applications. Cloud Services: Deep knowledge of AWS services, including EC2, S3, Lambda, RDS, and more, to design and deploy cloud-based solutions. Agile Development: Experience in agile methodologies to ensure efficient project management and timely delivery. Collaboration: Excellent communication skills and a collaborative approach to working closely with clients, designers, and other stakeholders. Key Projects: Oncue: Directed the engineering team to implement Twilio Flex and Dropbox Sign solutions, enhancing customer interaction and streamlining workflows. Healthline Media: Led the development of a new web platform using Node.js and React.js on AWS, improving performance and scalability. Constant Contact: Guided the iOS development team, implemented CI/CD pipelines, and ensured seamless deployment of mobile applications. Skills: Frontend: React, HTML, CSS, JavaScript, TypeScript Backend: Node.js, Java, Spring, SQL, NoSQL Cloud Services: AWS (EC2, S3, Lambda, RDS), GraphQL, Next.js Tools: Git, Docker, Jenkins, Jira, Twilio Methodologies: Agile, Scrum, Continuous Integration/Continuous Deployment (CI/CD) Why Choose Me: I bring a unique blend of technical expertise, project management skills, and a deep commitment to delivering high-quality software solutions. I aim to help you achieve your business objectives by providing reliable, scalable, and user-friendly applications. I am passionate about technology and strive to stay updated with the latest trends and best practices in software development. Let’s work together to bring your ideas to life and drive your projects to success!
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    Google Ad Manager
    JavaScript
    HTML
    CSS
    Stripe API
    Twilio
    React
    Relational Database
    Node.js
    Front-End Development
    TypeScript
    SQL
    Amazon Web Services
  • $80 hourly
    I am a result-oriented full-stack software engineer with valid experience in design, development, and testing across mobile, web, protocols and APIs. My journey in the world of development began 2014, and since then, I've immersed myself in various technologies, with a primary focus on JavaScript and PHP and mobile development. Technical Expertise: Front-End: I specialize in crafting seamless and user-friendly front-end experiences using modern JavaScript frameworks like React and Angular. My commitment to writing clean, modular, and scalable code ensures that the applications I build are not just functional but also maintainable. Back-End: On the server side, Node.js is my weapon of choice. I've architected and developed robust back-end systems, leveraging AWS, GCP, Node.js, TypeScript and PHP. Database Design: I possess strong expertise in database design and management, having worked extensively with both SQL (MySQL, PostgreSQL) and NoSQL (MongoDB) databases. My skills extend to optimizing database performance and ensuring data integrity. Mobile Applications: I'm well-versed in the mobile application development using frameworks like ReactNative, SwiftUI and Flutter. I've created and published 5+ applications to apple and google stores so far. Why Work With Me: Passion for Learning: I thrive on keeping up with the latest industry trends and technologies. Continuous learning is not just a professional goal but a personal commitment. Problem-Solving Mindset: I approach challenges with a problem-solving mindset, breaking down complex issues into manageable tasks and delivering effective solutions. Effective Communication: Communication is key to successful projects. I pride myself on my ability to convey technical concepts to both technical and non-technical stakeholders. I'm always excited to explore new opportunities, collaborate on innovative projects, and connect with fellow developers and industry professionals. I'm looking forward to the next exciting chapter in my journey, and I would love for you to be a part of it.
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    Laravel
    WordPress
    PHP
    MongoDB
    PostgreSQL
    MySQL
    SQL
    Nuxt.js
    Vue.js
    Next.js
    React
    NestJS
    Node.js
    TypeScript
    JavaScript
  • $85 hourly
    I'm a developer with a diverse range of experiences, having been a builder, consultant, and involved in product sales. I understand that the success of a project lies not in the technology itself but in identifying and solving the right problem for yourself or your business. I bring a wealth of experience in various programming languages, frameworks, data modeling in SQL and NoSQL databases, and CI/CD tooling. Additionally, I have expertise in working with Retrieval-Augmented Generation (RAG) models and Artificial Intelligence/Machine Learning (AI/ML) technologies, having applied RAG models, which combine traditional language models with information retrieval systems, to enhance the quality and accuracy of generated outputs by incorporating external knowledge sources. Projects: - Cohesive AI: Utilized Whisper, GPT-3.5 and Scenario.com to generate automated summaries of sales calls, update data in Salesforce and attach customers to open feature requests to reduce data duplication and improve data quality. - Barcade.ai: A web based arcade for LLM powered agents to compete on games. The goal being to introduce audience interaction into the games to build more engaging experiences where the agents have to adapt to audience controlled environments.
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    Automation
    JavaScript
    Terraform
    Vault by HashiCorp
    CI/CD
    React
    Python
    Golang
    Apache Spark
  • $100 hourly
    Hello from San Francisco! I operate a small design and development shop here on Upwork. We come together with business owners, like yourself, and lend them our expertise to progress their digital goals. We specialize in developing Custom Wordpress Websites and Bespoke Web Applications / Progressive Web Apps. Here are a few reviews from other business owners who have worked with me: It was an absolute pleasure to work with Michael. He went beyond his call of duty during the time he worked on developing our website. It really felt like having an extra-team member who is committed to the project as much as we were. He constantly came up with great ideas and was very patient when we changed the scope of the project. I really appreciated Michael's skill, commitment, creativity, professionalism and communication skills. I highly recommend Michael! Sham Mustafa CEO, Correlation One (Softbank Funded Data Science Company) As a co-founder and director, Mike has been pivotal in ensuring that our non-profits financials are sound. He has been proven capable of wearing multiple hats. He has lead marketing, design and development work and has mentored all of our engineers during the training program. I absolutely trust him to execute without fail and produce high quality work. Uche Nnadi CEO, Enye Inc (501(c)(3) International Tech Charity) This is my second project with Michael, and I'd definitely hire him again! He's a total WordPress pro and was quickly able to bring a broken and very old site back to reasonable functionality (which was the goal of this project). He's also super easy to work with remotely, as he's a friendly, responsive and clear communicator. Additionally, he has excellent diagnostic skills, which made it easy to understand the site's issues and how much investment was worthwhile. Highly recommended. Deborah Schatten Senior Director of Marketing, Brandese (SF Bay Area Marketing Company) Let's have a call and get your ideas off the ground, Michael Paccione
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    Vuex
    Web Development
    PHP
    CSS
    Redux
    WordPress
    JavaScript
    Vue.js
    Sass
    React
  • $95 hourly
    🏆Mobile Games & App Innovation 🏆Expert with 25+ years experience 🏆My mission is your project’s success 🏆A start-up founder with multiple exits 🏆100% Successfully completed jobs Are you in search of a dedicated developer or agency capable of fulfilling all mobile game or mobile application needs? Your journey ends here. My mission is to assist clients in entering and thriving in the dynamic mobile games and apps industry. I have the support of a proficient team, a proven track record, and outstanding communication, effectively helping businesses and entrepreneurs in various sectors. With 25 years of experience in the field, I possess insights into the pitfalls to avoid in order to thrive in today’s competitive market. Why Work with Me 🚀 Full-cycle Mobile Game and App services 🚀 100+ software projects, including 22 games and AAA titles 🚀 Supported by a battle tested team 🚀 Committed to achieving the extraordinary 🚀 Devoted to product delivery Expertise ⭐️ Product development from ideation to MVP and beyond ⭐️ Fullstack Development | Unity | Unreal Engine | AR/VR | Web3 ⭐️ Cross-platform: Android (Google, Amazon), iOS & MacOS (Apple Store) ⭐️ Delightful user experience to drive engagement and retention ⭐️ Use of AI, AR/VR, and Web3 to enhance game and app functionalities ⭐️ Auto-testing & launch (CI/CD for different platforms) ⭐️ App Store Guidelines, and monetization strategies ⭐️ Simulation Products (AR/VR etc) ⭐️ Integrate any third-party APIs / SDKs. ⭐ Git version control & Plastic SCM ⭐ Database Integration (AWS or Firebase) ⭐ Integrate any third party API Mobile Game Genres NFT Games | Kids Educational Games | MMO | Puzzle | Casual| Strategy | Arcade | MMORPG | Casual | Indie | Hyper Casual | Multiplayer | Card Game | Board Game | Turnbase Mobile App Genres Photo/Video | Voice/Video | eCommerce | Health | Healthcare | Travel | Location Based | Geolocation | Web3 | Blockchain | Marketplaces | Real Estate | Social | Chatbot | AI/ML | Education | Education for Kids | Messaging Platforms ✅ Android (Google, Amazon) ✅ iOS (Apple Store) ✅ MacOS (Apple Store) ✅ WebGL (VK, any server) Technical Skills React Native | TypeScript | JavaScript | PHP | Laravel | C# | AngularJS | AWS | Firebase | Node.js, I Google Analytics | MongoDB | MySQL | PostgreSQL | SQLite | Unity | Unreal Engine 5 | WebGL
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    Blockchain
    Oculus Rift
    Gaming NFT
    WebGL
    Game Design Document
    Desktop Application
    Game Development
    Game Design
    Ecommerce Website Development
    Product Development
    Firebase Cloud Firestore
    Firebase
    Objective-C
    React
    Review or Feedback Collection
    Map Integration
    Artificial Intelligence
    API
    Native App Development
    iOS Development
    React Native
    Smartphone
    Android
    iOS
    Mobile App Development
  • $80 hourly
    Hi, My name Vadym Bondarenko. I am full-stack JavaScript developer. I have 6 years experience in web development. Last few years I work on full-time base in enterprise telecom project with Belgium customer - bics.com My skills: Languages: JS, TypeScript, SQL, HTML, CSS Frameworks: React(Redux, Reflux, Flux), AngularJS, Angular2, Backbone, ReactNative, Cordova, PhoneGap, Ionic(base), Bootstrap Builders: Webpack, Gulp, Grunt, Bower, Browserify Libraries: JQuery, Lodash, MomentJS Technologies: NodeJS, Canvas, WebSockets, Ajax, JSON, XSLT, SOAP, SocketIO DB’s: MYSQL, PostgresSQL, MongoDB, Redis, Oracle Testing: TDD, Unit-tests, Integration tests, Selenium, Mocha, Jest, Enzyme, Karma, Snapshots VCS: Git, Svn CONVENTIONS: BEM, REST OS: OSX, Ubuntu, Window API experience: Facebook, VKontake, Google maps, Privatbank Services experience: AWS Processes: Agile, Kanban Task tracking: Jira, Redmin Here you can see some of the projects that i've developed: github.com/Danxil/pty/ github.com/Danxil/cr/ Currently I have interest to participate in next projects: - Development isomorphic and single-page application with the ReactJS and Angular2 - Development hybrid, cross-platform application on the React-native, Cordova/Phonegap. - Server-side development with NodeJS Thank you advance for your time and consideration. I look forward to working with you.
    vsuc_fltilesrefresh_TrophyIcon React.js
    React Native
    Front-End Development
    JavaScript
    AngularJS
    Node.js
    Git
    CSS 3
    React
    HTML5
  • $80 hourly
    Greetings! I'm Jon, a Senior Full Stack Developer based in San Francisco. Over the years, I have played a pivotal role in contributing to high-traffic platforms, optimizing user experiences and writing robust, testable code. After dedicating the last several years to a full-time client, I'm looking for new projects. Here's a snapshot of my expertise: 🌟 FormSwift Experience (August 2016 - February 2024): - Dynamic UI Development: Spearheaded the development of dynamic UIs that significantly increased user engagement on a legal tech platform. - Design Collaboration: Collaborated with designers to maintain a robust Design System, ensuring a cohesive and visually appealing user experience. - Next.js Migration: Led the successful migration of a PHP interface to Next.js, optimizing performance and streamlining development processes. - Testable UI Components: Developed testable UI components using React, RTL, Jest, and Chai-Enzyme, contributing to a more reliable and maintainable codebase. - GraphQL Integration: Integrated GraphQL queries and mutations, enhancing data retrieval efficiency and overall system performance. - Mentorship: Mentored junior engineers, sharing best practices and fostering a collaborative and growth-oriented team environment. - Project Organization: Organized large projects into manageable tasks, improving project efficiency and delivery timelines. - A/B Split-Tests: Engineered A/B split-tests using React and Optimizely Full Stack, leading to data-driven decision-making and improved user experiences. 🚀 AutoLotto Experience (Aug 2015 - Aug 2016): - Node.js Backend Maintenance: Maintained and enhanced a Node.js backend for an iOS application. - Predictive Analytics: Implemented user tracking for predictive analytics using Segment and Mixpanel. - ES6 Proficiency: Increased proficiency in ES6 by leveraging generators and promises within the Koa.js framework. - Transactional Email System: Worked with the Mandril API to build a transactional email system. - Dynamic Landing Pages: Built dynamic landing pages with advanced CSS styling animations. I'm passionate about creating seamless user experiences and I thrive in collaborative, growth-oriented environments. Let's discuss how my skills can contribute to your project's success! 🚀
    vsuc_fltilesrefresh_TrophyIcon React.js
    Shopify
    Tailwind CSS
    TypeScript
    Sass
    GraphQL
    Node.js
    MongoDB
    Ruby on Rails
    Bootstrap
    WordPress
    CSS
    Mobile App Development
    Redux
    React
    JavaScript
  • $80 hourly
    Are you looking to increase revenue, automate work processes, cut costs, or simplify your business operations through AI integration? Why Choose Me? 🌉 10+ years of experience working for leading Silicon Valley companies like Google, NGINX, F5, Craftable ✨ Top-1% Upwork Freelancer, 'Expert Vetted', I guarantee the strategic allocation of your AI/ML technology investment to deliver superior results for your enterprise. ⏳ 70+ 5-Star Reviews across Upwork and Fiverr (Fiverr Pro, Level 2) What I do: 🛠️ Custom AI Chatbot Implementation 💡 Natural Language Processing & Tailored Model Development 👓 Advanced Computer Vision Solutions 🤖 Custom AI Agents 📊 Predictive Analytics 📈 Personalized Recommendation Systems 🔄 Automation Process Optimization How can we succeed together: 1. Research/Planning (Discovery): Together, we'll craft project ideas that perfectly fit your company, identifying the most impactful uses for AI & ML in your business. 2. Prototyping: By creating initial solutions and Proofs of Concept (PoCs), we'll boost efficiency and return on investment, saving both your money and time. 3. Implementation: I'll provide advanced AI & ML solutions aimed at elevating performance and creating real value, helping you quickly outshine competitors in your industry. 4. Launch: I'll deploy, fine-tune, monitor, and optimize effective solutions for continuous business growth and improvement. 📞 𝐓𝐞𝐥𝐥 𝐦𝐞 𝐚𝐛𝐨𝐮𝐭 𝐩𝐫𝐨𝐛𝐥𝐞𝐦 𝐲𝐨𝐮 𝐡𝐚𝐯𝐢𝐧𝐠 𝐧𝐨𝐰 & 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 I offer a complimentary consultation on your project. Reach out to me, and let's elevate your business with AI. This is what clients have said: “We had an excellent AI bot integrated into our web app, which was delivered promptly and performs superbly. This software engineer gets a perfect score of 10 out of 10!” @Monica, Founder - Klimt Creations “The quality of the work I received was absolutely extraordinary. I genuinely feel like I paid less than what his services are worth. Such incredible talent. Arthur is truly unique and a master at what he does. He posed very important questions and customized the final product to suit my preferences perfectly. A true genius!” @Luka, Founder - Perimeter “Absolutely phenomenal work, I would highly recommend this freelancer. He's been one of the best I've ever hired. Very high quality process and deliverables.” @Damiano, Chief Growth Officer - BrandButterMe ______________________________________________________________________________ Tech Stack: - Generative AI (OpenAI, ChatGPT, API integration, GPT-3 through GPT-4, TensorFlow, PyTorch, LangChain, Open-source LLMs like LLaMA3 , Claude, Falcon LLM) - AI agents (LangChain, Llamaindex, Autogen) - Computer Vision (Keras, TensorFlow, OpenCV) - Comprehensive Data Science & ML Knowledge (Natural Language Processing, Chatbot Development, Amazon Web Services, Model optimization, NLP Model Fine-Tuning) - Savvy in AI Avatars and Voice Interaction (Voice Synthesis, Text-to-Speech, Speech-to-Text, Voice Cloning) - Backend Web Development Skills (Python, FastAPI, Flask, Node.js, Express, Docker, GraphQL, RESTful APIs, FastAPI) - Frontend Web Development Expertise (HTML, CSS, React, Redux, Next.js, ES6, Webpack, JSS, WebSockets, TypeScript)
    vsuc_fltilesrefresh_TrophyIcon React.js
    Figma
    Web Development
    Node.js
    Webflow
    React
    LangChain
    TensorFlow
    Llama 2
    ChatGPT
    HTML
    JavaScript
    Python
  • $185 hourly
    I am a California based NFT smart contract developer/web3-DApp developer/NFT consultant/advisor and have successfully launched over 10 NFT projects for my clients. I have provided consultation for over 20 NFT clients too. I have also worked on my own 10k generative ERC721 NFT art project. I was involved in every aspect of the NFT project from start to finish including contract development, twitter/discord marketing, generating the 10k art illustration, uploading images to IPFS, website design, integrating web3 for website minting, etc. I look forward to hearing from you and learning more about your project! Eugene
    vsuc_fltilesrefresh_TrophyIcon React.js
    Blockchain
    Ethereum
    Front-End Development
    Blockchain Development
    Website
    Web Design
    Cryptocurrency
    DApps
    Smart Contract
    web3.js
    Solidity
    Web Development
    JavaScript
    React
  • $80 hourly
    Ex-Apple & Ex-Google engineer here to help with fullstack development. Primary technologies that I work with are Python/Django, ReactJS, AngularJS, NodeJS, and React Native. Feel free to contact me if I can provide further clarification to questions you might have. I would also like to mention that I work purely in a consulting capacity. I am not seeking fulltime or contract to hire roles (If you are an UpWork Recruiter, please pass on my profile for those types of roles. Thank you!).
    vsuc_fltilesrefresh_TrophyIcon React.js
    Swift
    React Native
    Android
    Sketch
    JavaScript
    CSS 3
    Django
    AngularJS
    React
    Docker
    Node.js
    Ruby on Rails
  • $100 hourly
    In search of an innovative developer who can streamline your User Experience, optimize your Return on Investment, and fast-track your release objectives? Are you craving transparency in communication and an unwavering commitment to your project's success? The search ends here – I'm your tech ally, ready to embark on this exhilarating journey with you. 🔥 I'm an established Senior Software Engineer, navigating the tech seas with a Master's in Computer Science. 🔥 I'm a CTO of the globally recognized Code & Cakes agency – we bask in the glow of a 5-star rating on Clutch. 🔥 I draw on my experience as a Founding Engineer at a distinguished YC company, which made a successful exit. ✨ I'm a Top-Rated Plus Freelancer, showcasing my dedication through an impressive 4850+ hours of work on UpWork. 📍 With over nine years of experience in web application development, I am an expert at designing and implementing pioneering web solutions. 📍 I’m swift in learning new technologies, ensuring I'm abreast of emerging trends and adhering to the best practices in the industry. 📍 My unwavering reliability and meticulous attention to detail are hallmarks of my professional ethos. Curiosity propels me to constantly ask, "Why?" and "What's the purpose?". This mindset enables me to continuously explore new tech, strategies, and ideas, expanding my tech proficiency. Please find a detailed overview of my extensive tech toolkit below, replete with the latest high-demand skills and technologies: 🔧 Languages: JavaScript, TypeScript, Golang, Rust, Python, Solidity, Bash, Java, C#, HTML5, CSS3, SQL, NoSQL; 🔧 Frontend: ReactJS, NextJS, Vue3, NuxtJS, Angular, Svelte, Tailwind, Mantine, Sass, Web3.js and more; 🔧 Backend: Nodejs, Express, NestJS, Loopback, Django, GraphQL, gRPC, REST API; 🔧 Databases: PostgreSQL, MySQL, Redis, Clickhouse, MongoDB, Firestore, Apache Cassandra; 🔧 Mobile: React Native, Flutter, Android Development, iOS Development; 🔧 Infrastructure: AWS, Azure, Hasura, Heroku, Render, Firebase, GCP, Docker, Kubernetes, LambdaCloud, Terraform, Jenkins, Git, DevOps; 🔧 AI/ML: OpenAI, Stable Diffusion, GPT-3/GPT-4, Dall-E, TensorFlow, PyTorch, Machine Learning, Data Science; 🔧 Blockchain: Ethereum, Solidity, Web3.js, Truffle, Hyperledger, NFTs, DeFi, Cryptocurrency, Bitcoin; 🔧 Cybersecurity: Ethical Hacking, Penetration Testing, Secure Code Review. Keywords: Senior Software Engineer, Full Stack Developer, Mobile Development, Web Development, JavaScript, TypeScript, Python, ReactJS, Angular, Vue3, NodeJS, SQL, NoSQL, DevOps, AWS, GCP, Docker, Kubernetes, TensorFlow, Machine Learning, Blockchain, Ethereum, Cryptocurrency, Cybersecurity. Suppose your project calls for a progressive senior software engineer with comprehensive web development skills who can seamlessly blend into your team, connect with me today. I'm eager to surpass your expectations and deliver the highest quality product.
    vsuc_fltilesrefresh_TrophyIcon React.js
    React
    Web Development
    GraphQL
    ExpressJS
    AWS Lambda
    MySQL
    Amazon Web Services
    Angular
    TypeScript
    JavaScript
    Business with 1-9 Employees
    Node.js
    PDF Conversion
    PostgreSQL
    LoopBack
  • $65 hourly
    I’m a React.js developer that can help you establish an online presence for your business. Together we can create an optimal solution that is catered to your establishment. With that said, I will provide a clear channel of communication from start to finish. Expect quick responses! I build and deploy performant and stunning web applications using React.js and other integrated JS libraries/frameworks. I have an eye for detail, and will make sure that your web application provides a smooth experience on any device. I’m a self-taught web developer as well, though I always welcome learning experiences from anyone. I’ve got 3 years of experience as a web developer. In this time I’ve provided my web development services to both individual clients and larger companies alike, and write a blog for publications online. My expertise is focused primarily around MERN (MongoDB, Express.js, React.js, Node.js). I’m also familiar with various UI libraries, such as MUI and Bit.dev. I have an extensive knowledge of 3rd party packages that can be implemented based on the client’s needs (Redux, Styled Components, ApolloGraphQL, etc). I’m also able to optimize code that is in development and have it ready for production. I can implement bundlers such as Webpack to minify your web application’s code, thus ensuring delivery of a more performative, production-ready product. Is your application in need of state management? I am knowledgeable in various solutions for state management, such as implementing a Redux store or using React’s Context API. I can also request third-party APIs for a wide variety of payloads as needed, such as inventories, user databases, payment processing, even delivery tracking. Needless to say that in this day in age, mobile platforms have become the primary tool for browsing the web. If a responsive web application isn’t what you need, I can also build mobile applications using React Native, that can be run on both Android and iOS platforms. Feel free to get in touch at any time. Thanks for visiting!
    vsuc_fltilesrefresh_TrophyIcon React.js
    React Native
    SQL
    Web Application
    Web Design
    ExpressJS
    Next.js
    Figma
    HTML5
    API
    CSS 3
    JavaScript
    Front-End Development
    MongoDB
    React
    Node.js
  • $50 hourly
    I’m a full-stack product designer, meaning I use UX Research, UI Design, and Front-end Dev skills to craft products that scale. I’ve spent the last six years designing end-to-end healthcare services and another four years designing dev tools, with two successful startup acquisitions under my belt.
    vsuc_fltilesrefresh_TrophyIcon React.js
    CSS
    Next.js
    CSS 3
    React
    HTML5
    MongoDB
    Product Design
    Figma
  • $93 hourly
    Are you looking for a top rated software engineer? I'm Cristoval, a seasoned fullstack software engineer and certified Stripe professional developer. My reviews from satisfied clients highlighting my dedication and expertise speak my commitment to help businesses thrive in the world. I can't help everyone but we may be a fit if:🔥 ✨You are struggling to find a quality engineer or developer who communicates every step of the way ✨ Need to integrate payment system seamlessly into your application ✨ Worried about payment PCI compliance, security vulnerabilities or scalability issues Why me? As a full-stack engineer, I bring experience to the table, specializing in software architecture, payment systems, security, and scalability. My certification as a Stripe professional developer and architect proves my deep understanding of the platform, allowing me to customize solutions that meet your specific needs. Whether you're a startup looking to establish application infrastructure or an industry leading enterprise seeking to optimize your existing setup, I'm here to make your journey with software a smooth one. Technology Expertise: ⚡️ HTML, CSS, JavaScript, TypeScript ⚡️ React, Next.js, Node.js, Express.js ⚡️ Website and web application authentication and authorization ⚡️ MongoDB, PostgreSQL ⚡️ Stripe integration, PayPal integrations, Serverless functions, API integration Send me your project requirements and I will get back to you as soon as possible. Hablo español.
    vsuc_fltilesrefresh_TrophyIcon React.js
    Software Debugging
    Microservice
    GraphQL
    jQuery
    Database Architecture
    MySQL
    API Development
    Database Design
    MongoDB
    React
    Node.js
    Next.js
    PayPal
    Stripe
    JavaScript
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