React Js Projects

React Native Developer for Advanced Notification Architecture

Looking for an experienced React Native / mobile developer to help stabilise and complete an app already in development. I'm a Service / UX Designer and entrepreneur with experience leading teams and delivering digital products. I’ve built an MVP for a cycle-aware reminder app and have reached the point where I need an experienced mobile developer to take over the architecture side and get it production ready. The app was initially built using the AI development platform Replit to rapidly prototype, validate ideas, and accelerate development. That approach worked well for getting an MVP live quickly, but I've now reached the stage where the underlying architecture needs experienced mobile engineering input. Current state: • UI largely complete • Core reminder logic exists • App is running on real devices • Product direction and UX are well defined • Existing codebase and architecture documentation available The app itself is quite far along. The challenge is the notification engine and underlying architecture rather than the product. The app relies heavily on notifications, so reliability is critical. It needs to: • work offline • continue working when the app is fully killed • process notification actions correctly • not depend on users reopening the app • avoid duplicate or missed reminders Current stack: • React Native / Expo • expo-notifications • expo-sqlite • Express + PostgreSQL backend • EAS builds • RevenueCat Features already implemented: • cycle-based reminders • interval/day reminders • weekday reminders • multiple reminder times • Take / Skip / Snooze actions • reminder history • local persistence Current issues: • unreliable killed-state behaviour • notification actions failing intermittently • duplicate notifications from rescheduling flows • scheduling depends too heavily on JS runtime behaviour • offline reliability not strong enough for a medication/reminder product • Expo-managed limitations appear to be becoming a blocker The current architecture uses a hybrid local notification / server push approach. Through debugging and architecture reviews, there are signs that parts of the scheduling system may be fundamentally flawed, including backend scheduling behaviour in autoscaling environments. I’m open to keeping parts of the current stack if it makes sense, but I’m not looking to layer more workarounds on top. Priority is getting the architecture right. Looking for someone who can: • review the current setup • identify what should stay vs be reworked • implement a reliable native notification architecture • help get the app production ready Open to freelance, ongoing collaboration, or potentially a longer-term role if there’s a strong fit.

Frontend Developer (React / Electron / Web3)

We are building a next-generation Web3 decentralized browser and looking for a talented Frontend Developer with strong experience in React.js, Electron, and modern Web3 technologies. You will help create a fast, secure, and modern browser experience connecting users to decentralized applications, blockchain networks, wallets, and privacy-focused services. Responsibilities Develop and maintain browser frontend features using React.js, Electron, and TypeScript Build responsive, scalable, and high-performance UI components Implement Web3 integrations including wallets, blockchain APIs, and smart contract interactions Work closely with backend and blockchain engineers Optimize Electron application performance and memory usage Create intuitive UX for tabs, settings, extensions, wallet management, and decentralized browsing Maintain clean and reusable architecture Participate in code reviews, debugging, and technical decisions Requirements Strong experience with React.js, JavaScript (ES6+), and TypeScript Experience building desktop apps using Electron Experience with Web3 libraries such as ethers.js, web3.js, or WalletConnect Understanding of blockchain, dApps, and crypto wallets Strong frontend architecture knowledge Familiarity with Chromium-based environments Experience with Git and CI/CD workflows Strong problem-solving skills Bonus Skills Experience building browsers or browser extensions Familiarity with IPFS or peer-to-peer technologies Knowledge of browser security and privacy-focused architectures Experience with decentralized identity systems Passion for modern crypto/Web3 UX What We’re Looking For We want someone passionate about the future of the decentralized internet — a developer who enjoys solving challenging frontend problems and building products that redefine how users interact with the web. If you love React, Electron, Web3, and browser technologies, we’d love to hear from you. Apply with: Relevant React/Electron projects Web3 or blockchain-related experience GitHub or portfolio links

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AI Council Information Platform Frontend MVP (React / Next.js)

We are seeking an experienced React / Next.js frontend developer to build the frontend MVP for an AI-powered local council information platform called myClerk. The backend API already exists and includes endpoints for: council listings user identity chatbot querying documents and sources The provider will build the frontend only. Scope includes: Public homepage using supplied branding concepts SEO metadata integration User registration/login system Email verification Council dropdown selection during registration User account/settings page Chatbot interface connected to API Citation/source display Responsive UI GitHub delivery and documentation Preferred stack: React or Next.js TypeScript preferred Tailwind or similar modern UI framework The supplied branding concepts must be closely followed. Important: All bidders MUST clearly state that their quote is their FULL AND FINAL FIXED PRICE for delivery of the complete MVP described. Please include: Estimated completion timeframe Relevant examples of previous work Experience with authentication systems and API integrations Confirmation that you can deliver deployable production-ready code

Shopify Plus Developer for Aro Shoes (Ongoing Part-Time Role)

Aro Shoes seeks an experienced Shopify Plus developer for an ongoing part-time role. You will develop, customize, and maintain our Shopify Plus storefront, implement and configure apps, build API integrations and custom features, enhance front-end themes using OS 2.0, and optimize performance and SEO. Required: 3+ years Shopify development, Shopify Plus expertise, HTML/CSS/JS/Liquid, Shopify API, Git, strong UX/UI skills, and high English proficiency. Bonus: React/Node, Shopify Flow, analytics familiarity. Competitive long-term engagement.

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App ready for finalisation

I am seeking an experienced React Native + Expo mobile app developer to assist with the final deployment and publishing stages of an already-developed mobile application. The application has already been built using AI-assisted development and the majority of the codebase is complete. I am specifically looking for someone experienced in mobile deployment, debugging, build configuration, and App Store submission workflows. Required Skills: * React Native * Expo / EAS Build * iOS deployment * Apple Developer / App Store Connect * TestFlight * Firebase or Supabase familiarity * Build debugging * Dependency management * Environment variable configuration * App signing / provisioning profiles Tasks May Include: * Reviewing existing codebase * Resolving build/dependency issues * Configuring EAS Build correctly * Preparing iOS production builds * Assisting with Apple Developer setup * TestFlight deployment * App Store submission support * Troubleshooting App Store review issues if required Important: * This is NOT a “build an app from scratch” project. * The app already exists and is functional. * Looking for someone efficient, technically strong, and experienced with modern React Native/Expo workflows. Please provide: * Examples of React Native / Expo apps you have deployed * Experience with App Store publishing * Your availability * Estimated hourly/project rate Long-term collaboration possible for future updates and maintenance.

Full-stack developer — PDF templates & widget management

We are looking for a developer to work on an internal CMS-style admin application built with React, MUI, Apollo GraphQL on the front end and Node with MongoDB on the back end. The role combines two threads of work. First, you will extend our PDF workflow along a PDF viewer v2–style pattern: a configuration area, an HTML preview, a preview dialog that renders the document with @react-pdf/renderer, and download of the generated PDF. The main outcome we care about is implementing a new PDF layout that faithfully follows our reference file template.pdf—section structure, hierarchy, spacing, and pagination where relevant—with editable fields wired through config components, a matching on-screen preview, and registration in our template layer so preview and download stay in sync. Second, you will work on the existing “manage widgets” side of the product: widget groups and the flows to create and edit groups, add and remove widgets such as text and chart-oriented blocks, and keep everything aligned with the GraphQL API and a solid admin experience including loading and error handling. We expect solid TypeScript React skills, comfort with GraphQL and Mongoose-style backends, and the ability to follow the project’s existing patterns rather than rewriting the stack. Experience authoring PDFs in React with @react-pdf/renderer and matching a fixed reference PDF is important for the PDF part; any background with chart or dashboard widgets in React is helpful for the widget work. The engagement is remote and milestone-friendly; we will share repository access and template.pdf when you begin. In your application, briefly describe similar PDF or CMS work you have done, point us to relevant examples if you have them, and note your availability.

Next.js Developer Needed for Existing Web Project

I am looking for an experienced React/Next.js developer to help complete and improve existing web platform-based projects. The project includes frontend improvements, responsive UI/UX work, API integrations, dynamic content pages, and additional feature development. Requirements: Strong React.js / Next.js experience Modern responsive UI skills Experience with API integrations Clean, scalable code practices Good communication and reliability Preferred: Tailwind CSS TypeScript SEO/performance optimization experience

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React Native Developer for Premium Platform (5+ yrs)

A. Project Overview We are looking for a Senior React Native Developer with 5+ years of experience to support the development of a premium invite-only networking and event intelligence platform. This platform is designed for investors, founders, institutional members, and high-net-worth individuals, combining: 1. Intelligent networking 2. AI-powered matchmaking 3. Event lifecycle management 4. Concierge workflows 5. Secure member-only access This is an MVP-focused project with long-term scalability in mind. B. Required Experience The applicants must have: 1. 5+ years of development experience. 2. Strong hands-on expertise in React Native (Expo). 3. Experience building production-grade mobile applications. 4. Strong API integration experience. 5. Experience with authentication, notifications, and real-time features. 6. Good understanding of scalable application architecture. C. Required Skillset 1. Applicants should have strong hands-on experience with: React Native (Expo) React.js / Next.js TypeScript Node.js / Express.js Supabase & PostgreSQL REST API integration Authentication, RBAC & RLS Tailwind CSS Real time systems & push notifications OpenAI API integrations Git / GitHub Vercel deployment workflows Mobile app deployment (iOS & Android) Scalable full-stack architecture 2. Additional Requirements: 5+ years of professional development experience. Strong React Native expertise. Experience building production-grade applications. Good communication and problem-solving skills. D. Scope of Work 1. Web Application: Member dashboard Event listings & lifecycle workflows Concierge/admin panel Member directory Authentication & onboarding 2. Mobile Application React Native (Expo)-based iOS & Android app Secure onboarding and authentication Member profile flows Event participation experience Push notifications Matchmaking & networking interactions Real time updates and notifications 3. Backend & API Integration Supabase integration PostgreSQL database Authentication & RBAC Row-Level Security (RLS) Real time synchronization API integrations 4. Additional Responsibilities Performance optimisation App Store / Play Store deployment support Collaboration with internal UI/UX and QA team Code quality and scalable architecture implementation E. Important Notes 1. This is a premium-quality platform with strong focus on performance, scalability, security, and polished user experience. 2. UI/UX design and QA/testing support may be partially handled by our internal team. 3. Long-term collaboration opportunity available after MVP delivery. To Apply please share: 1. Relevant React Native projects 2. Portfolio / GitHub / live apps 3. Years of React Native experience 4. Availability NOTE: Only experienced freelancers (5+ Years) with strong React Native expertise should apply.

Blockchain Development Guidance & Support

I am learning blockchain development and building a project step-by-step using tutorials and hands-on implementation. I seek a skilled, reliable Blockchain Developer to provide development support and mentorship. Current scope is fixed: bug fixes and integration assistance. Responsibilities include Solidity smart contract development and debugging, deployment and testing with Hardhat or Foundry, frontend integration using React/Next.js and ethers.js, wallet connection and transaction flows with MetaMask, resolving contract/frontend interaction issues, and offering code quality, best-practice, and security-focused recommendations.

Development of a Web3 RPG Game with NFT Integration

Seeking an experienced developer or team to create a Web3 RPG featuring NFT characters and items (ERC-721/ERC-1155), in-game currency, and an integrated marketplace. Responsibilities include smart contract design and deployment using Hardhat/Ethers.js, backend game logic for player progression and NFT metadata, and a React/Vue frontend for minting, trading, inventory management, and wallet integration. Deliverables: deployable NFT and currency contracts, deployment scripts, documentation, and a functional prototype; optional: initial assets and sample gameplay.

Need a developer to fix my website’s SMTP email function

Hi all! I need a developer to fix my website’s SMTP email function. The site is built with Core PHP, JS, HTML, CSS, AJAX, and hosted on Linux via Docker. Problem: The SMTP “send” function isn’t communicating with the backend, so emails are not being sent. Optional Task: Integrate a crypto payment gateway to accept payments directly on the website. Requirements: Experience with PHP mail/SMTP functions Familiarity with Linux/Docker hosting Knowledge of JS/AJAX interactions is a plus Experience with crypto payment APIs is a bonus Budget: $40 in crypto for the SMTP fix Additional payment negotiable for the crypto payment integration How to Apply: Message me with your experience and estimated time Bonus if you’ve done crypto payment integration before

Senior Full stack developer

We work remote by default – focused, efficient, and with full ownership. For larger features, architectural decisions, and real brainstorming sessions, we come together in Berlin – fast, hands-on, and without unnecessary meeting overhead. We use AI to accelerate – not to replace thinking. We design the system, steer the output, and take responsibility for what we ship. Fast where it makes sense. Careful where it matters. Your mission You’ll join our UI Engineering team and take ownership of full-stack projects that power our adtech ecosystem. This isn’t just about coding – it’s about collaboration, technical ownership, and making an impact. Here’s what your day might look like: Build and maintain modern React frontends and Node.js APIs with TypeScript. Design and implement REST or GraphQL APIs that scale efficiently. Collaborate closely with backend engineers, designers, and product owners to translate requirements into elegant solutions. Write clean, maintainable, and well-tested code – with automated tests as a natural part of your workflow. Contribute to architecture decisions and best practices – we value opinions backed by experience. Your skills 5+ years of hands-on experience in full-stack JavaScript development. Deep knowledge of Node.js (framework e.g. Koa, Express or Fastify), TypeScript, React and modern web architectures. Solid understanding of relational databases (e.g. MySQL, MariaDB, PostgreSQL or SQL Server), including database design, SQL querying, and REST API development (GraphQL is a plus). A strong sense of code quality with mandatory hands-on experience in testing, including frameworks such as e. g. Jest, Vitest, or Node’s built-in testing framework – Clean design and automated tests are not optional. Bonus points for experience with: AWS, Jenkins, Grafana, Graylog, Confluence, Jira, Shell scripting

Adobe Express Embed SDK Microsite

We are building a branded microsite that embeds Adobe Express to allow users to customize a predefined template and export their design. The experience will be used in a kiosk-style environment (iPad + browser), so the UI must be simple, controlled, and resilient. We are looking for a developer to implement a working MVP, with potential to extend into a production-ready deployment. Core Experience (What We’re Building) User flow: User lands on branded microsite Clicks “Start” → launches Adobe Express editor with a predefined template Edits design inside embedded Express experience A visible countdown timer runs during the session User clicks “Finish” System prompts for file name only (single input) File is exported and automatically uploaded to Dropbox System resets for next user Technical Requirements Frontend Build a responsive microsite (desktop + iPad Safari) Implement Adobe Express Embed SDK (v4) Launch a specific template directly (not template browser) Embed Express using inline container Create a branded wrapper UI Implement countdown timer (top corner) start / reset flow filename input modal (minimal UI) Handle SDK callbacks: onLoad onPublish onCancel onError Backend Create endpoint to: receive exported asset from frontend process file (likely base64/blob) upload to Dropbox Dropbox Integration One of the following approaches (you can recommend): Option A (Preferred): Direct upload to our Dropbox via API (OAuth + server-side upload) Option B: Use Dropbox Saver if appropriate Kiosk Behavior Auto-reset after submission or timeout Prevent user getting “stuck” in flow Clean UX for repeated use Must work reliably on iPad in browser (Safari) Deliverables Working microsite (frontend) Backend API (Node / serverless preferred) Adobe Express integration fully functional Dropbox upload working end-to-end Clean, minimal UI Basic error handling (network / export failures) Setup instructions + environment variables documented Tech Preferences Frontend: React, Next.js, or simple JS (open to recommendation) Backend: Node.js (Express / serverless functions) Hosting: Vercel / AWS / similar Clean, readable code (this may be extended later) Experience with: Adobe Express Embed SDK iframe-based app embedding kiosk / event experiences iPad testing experience Dropbox API familiarity Timeline MVP target: Fast turnaround preferred Budget Open to: Fixed price (preferred if scoped clearly) Hourly (with estimate) To Apply Please include: Relevant experience with: embedded SDKs or iframe apps file upload / export workflows Example projects (especially anything interactive or kiosk-style) Your proposed stack Estimated timeline and cost Any questions or suggested improvements to the architecture Notes This is not a generic website build — requires integration thinking We value clean UX and reliability over visual complexity Opportunity for follow-on work (admin controls, analytics, multi-template support)

Hambox Tech LTD.Co

We are looking for an experienced website developer to build a professional company website for Hambox Tech LTD.Co. The website should have a modern, clean, and responsive design that reflects our brand and services. We need a user-friendly layout with key sections such as Home, About Us, Services, Projects, Contact, and Careers. The ideal developer should have experience in custom website development, UI/UX design, mobile responsiveness, SEO optimization, and fast-loading performance. Knowledge of WordPress or modern frameworks such as React/Next.js is preferred. The project may also include contact forms, social media integration, basic animations, and admin functionality for content updates. We are seeking someone who can deliver a high-quality, scalable, and professional business website within the agreed timeline. Please share your portfolio and relevant experience when applying.

We’re looking for a Software Engineer to join our team.

We’re developing Web3 infrastructure and applications, including a metaverse gaming platform, a crypto-based real estate platform, and a decentralized exchange (DEX). Currently, we’re looking for a Software Engineer to join our team. Tech stack: React, Next, Node, Web3, JavaScript/TypeScript The role is fully remote with flexible working hours, so you can work in your own time zone if that’s more convenient. We use Slack for communication and task management. We offer both full-time (30~40 hrs/week) and part-time (10~20 hrs/week) options, depending on your availability.

Looking for a HTML + CSS Frontend developer

We are looking for a skilled HTML + CSS Frontend Developer to build clean, responsive, and user-friendly web interfaces. You will work closely with designers and backend developers to create modern, high-performance websites and web applications. Responsibilities: Convert Figma/PSD designs into responsive HTML/CSS pages Build mobile-friendly and cross-browser compatible interfaces Write clean, maintainable, and reusable frontend code Optimize website performance and loading speed Collaborate with designers and developers to improve UI/UX Ensure consistent design across devices and screen sizes Requirements: Strong knowledge of HTML5 and CSS3 Experience with responsive design and Flexbox/Grid Basic understanding of JavaScript Familiarity with Git/version control Attention to detail and pixel-perfect implementation Ability to work independently and meet deadlines Nice to Have: Experience with Bootstrap or Tailwind CSS Knowledge of React or Vue.js Understanding of UI/UX principles Experience working with APIs Job Type: Remote / Freelance / Full-time Preferred Skills: Responsive Web Design Cross-Browser Compatibility Frontend Optimization CSS Animations Figma to HTML

Next.js Frontend Support

We’re currently expanding an existing web platform and are looking for a React / Next.js developer who enjoys improving real products rather than starting from scratch. The project is already up and running, which means you’ll be working on something tangible-refining the frontend, improving user experience, and helping shape features that are actively being used. This role is well-suited for someone who prefers clear, structured work over vague requirements. Tasks are defined in advance, expectations are realistic, and the focus is on steady, meaningful progress instead of rushed delivery. You’ll be improving UI components, enhancing responsiveness, and integrating with existing APIs, while also having the opportunity to contribute to new features as the platform evolves. We value developers who take ownership of their work, communicate clearly, and care about writing clean, maintainable code. If you’re someone who enjoys polishing details and making interfaces feel smooth and intuitive, you’ll likely find this project a good fit. Experience with Tailwind CSS, TypeScript, or performance optimization is a plus, but not a strict requirement. The engagement is expected to last around two months, with an hourly rate between $25 and $50 depending on your experience. Work is managed directly through the platform with clear task breakdowns, and there are no unpaid test assignments-just a straightforward, professional collaboration from the start.

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Conspection – Full Stack SaaS Developer Needed

Conspection – Full Stack Developer Needed for SaaS Prototype Review & Backend Setup Project Description I have built an early prototype of a construction site management SaaS platform called Conspection using Loveable. The platform is aimed at UK housebuilders and includes: * Plot tracking * Site progress dashboards * Inspection management * Contractor/material tracking * Programme management * Reporting and analytics I am now looking for an experienced full-stack developer to help assess and professionalise the platform for production use. Phase 1 requirements: * Review existing Loveable-generated codebase * Advise whether the current structure is suitable for scaling * Set up GitHub properly * Set up Supabase backend/database/authentication * Connect frontend securely to backend * Improve structure/security where needed * Prepare the app for deployment and future development Preferred skills: * React / Next.js * Supabase * SaaS platform development * Dashboard systems * Production deployments * Security best practices Important: I am looking for someone experienced and honest who can advise the best route forward technically — not just someone who says yes to everything. Please provide: * Examples of similar SaaS projects * Your recommended approach after reviewing the prototype * Estimated timeline for Phase 1 Potential for ongoing long-term work if successful.

QA Platform

About Us smarttechhire is a skill-first hiring platform for QA roles, offering assessments, pre-vetted candidates, and a streamlined hiring experience. We’re now expanding into Web3 (decentralized identity & credentials). Role We’re hiring a Full-Stack Engineer to build and scale our platform across backend APIs, frontend (Next.js), and Web3 integrations. What You’ll Do Build and maintain APIs (Node.js, REST/GraphQL) Work across Next.js frontend + backend systems Design databases and data models Implement Web3 features (wallet auth, smart contract integration) Ensure security, performance, and reliability Requirements 3+ years in full-stack or backend development Strong in Node.js + React/Next.js Experience with databases (SQL/NoSQL) Solid API design skills Bonus: Web3 (Ethers.js, wallets, Solidity), AWS/GCP, TypeScript Why Join Remote & flexible High ownership Build both core platform + Web3 direction

Web Application to Mobile Application Conversion Needed

We are seeking an experienced Freelancer to convert our existing web application into a fully functional mobile application. The ideal candidate will have a strong background in cross-platform frameworks such as React Native, Flutter, or Xamarin, as well as native development for iOS and Android. You should have a proven track record of successfully adapting web applications for mobile platforms, with a portfolio showcasing similar conversion projects. Proficiency in responsive design, mobile UI/UX best practices, API integration, and implementing device-specific features (such as push notifications, offline access, and touch gestures) is essential. Experience with app store deployment and providing ongoing support will be highly regarded. In this role, you will be responsible for analysing our current web application and translating its features into an optimised, intuitive mobile experience. Excellent communication and project management skills are a must, as we value close collaboration throughout the process. Please include examples of previous web-to-mobile conversion projects, references or client testimonials, and a brief overview of your development approach in your application. If you are a creative problem solver who can deliver high-quality results and guide us through the process from concept to app store launch, we want to hear from you!