We are seeking a U.S.- or Canada-based developer to provide ongoing management and technical support for a custom React-based SaaS website and application hosted on Vercel, with Supabase supporting the backend. Responsibilities include: Managing React/Vercel deployments Implementing HTML, content, and layout updates Maintaining metadata, canonicals, schema, sitemaps, and robots.txt Ensuring public pages remain crawlable and SEO-friendly Troubleshooting rendering, routing, performance, and indexing issues Supporting GA4 and Google Tag Manager implementation Protecting private application routes from search indexing Working from clear SEO and design instructions Providing reliable ongoing maintenance and documentation Requirements Based in the United States or Canada Strong React and modern JavaScript experience Production experience with Vercel Familiarity with Supabase Strong understanding of technical SEO and semantic HTML Experience with GA4, GTM, schema, redirects, canonicals, and sitemaps Clear communication and dependable availability

We are looking for an experienced React Native developer to build Airway Formula — a mobile wellness app for patients undergoing palate expansion treatment (MARPE, FME, MSE). The app includes a daily exercise program with embedded video, an expansion turn tracker with push notifications, symptom self-check with trend graphs, streak and compliance tracking, a personal photo log, a static education library, and a treatment timeline. Full project brief is attached. This is a fixed-price, milestone-based engagement with a budget of $1–$4,000. You must have at least one React Native app live in the App Store, prior Firebase and RevenueCat experience, and have strong UI/UX design capability. We will provide general layout direction and wireframes in Figma, but we are looking for a developer who can take that foundation and deliver a polished, professional aesthetic with proper app flow — think Apple Health meets Headspace. Full source code ownership transfers to the client at project completion. If this sounds like a fit, please read the attached brief carefully before submitting your proposal — we will only respond to proposals that address the specific questions outlined in Section 08.

Job Description Project Overview We have a fully code-complete Micro-SaaS platform called BounceBack SMS. The app is an automated missed-call text-back and lead recovery system built using Next.js 15, Tailwind CSS, Twilio API, and Supabase. The repository is isolated, structured, and securely hosted in a private GitHub repository. We are looking for an experienced Full-Stack/DevOps Engineer to handle the production deployment, configure live API pipelines, manage database environment mapping, and ensure the entire setup runs on a frictionless, automated continuous integration/continuous deployment (CI/CD) framework. Scope of Work (Key Deliverables) 1. Infrastructure Mapping & Production Deployment Deploy the Next.js 15 frontend/backend application from our private GitHub repository to production hosting (Vercel/Render). Map and connect production environment variables, database schemas, and connection strings to our live database instance (Supabase/PostgreSQL). Configure a permanent automated CI/CD pipeline (e.g., GitHub Actions or Vercel integration) ensuring any future push to the ⁠main⁠ branch automatically rebuilds and deploys the app flawlessly. 2. Twilio API & A2P 10DLC Compliance Configuration Connect and secure our live Twilio API gateways within the backend architecture. Audit and verify that our messaging endpoints cleanly support incoming webhooks for missed-call detection. Crucial Milestone: Assist and audit our US A2P 10DLC Campaign Registration via Twilio to ensure 100% carrier delivery compliance (Privacy Policy and Terms pages are already live and coded in the repo). 3. Live Stripe Billing Integration Transition our checkout environment variables from Stripe Sandbox/Test Mode into Live Production Mode. Wire up our exact pricing architecture: $0 Setup Fee, 100 Free Leads Usage Trial, transitioning into a flat $19.99/Month Recurring Subscription. Ensure Stripe webhooks are completely listening to successfully provision, pause, or update customer account access tiers inside our database based on subscription state. 4. Handover & Bulletproof Documentation Provide a brief, plaintext ⁠.txt⁠ or ⁠.md⁠ technical handover file outlining the deployed environment structure, a list of active API webhooks, and step-by-step instructions for simple environment variable updates. Required Tech Stack Expertise Frameworks: Next.js 15 (App Router), React, Tailwind CSS Database: Supabase / PostgreSQL (Schema sync, migrations, security policies) APIs: Twilio SMS Gateway (Webhook architecture, A2P 10DLC registration compliance) Payment Rail: Stripe Billing API (Usage-based trials, recurring webhooks) DevOps/Version Control: Git, Private GitHub Repositories, Vercel/Render, CI/CD automation Preferred Qualifications Proven track record deploying independent Micro-SaaS or automation applications. Deep familiarity with strict US telecom carrier A2P SMS delivery guidelines to prevent messaging blocking or spam flags. Obsession with clean environment variable separation—absolutely no hardcoded credentials. Excellent technical communication skills and availability to run live end-to-end integration testing before final milestone sign-off. 🎯 Candidate Screening Questions (Include on Upwork) 1. Briefly describe your experience configuring Twilio webhooks and handling the US A2P 10DLC registration process to ensure high carrier delivery rates. 2. How would you configure Stripe to trigger a recurring $19.99/mo flat-rate subscription specifically after a user consumes exactly 100 free database actions/leads? 3. Confirm that you are comfortable working out of a private GitHub repository and setting up an automated CI/CD pipeline so I never have to manually pay for developer redeployments.

Project Overview We are seeking an experienced React developer to complete and enhance an existing web-based title and real estate document management application. The software is approximately 80% complete and is currently deployed and operational. The application is used to manage title search orders, enter title data, track chain of title information, and generate real estate-related documents. We are looking for a developer who can review the existing codebase, understand the current architecture, and complete the remaining development tasks. Current Technology - Existing React-based web application - Source code maintained in GitHub - AWS-hosted deployment - Existing database and user interface already functioning Scope of Work 1. User Interface Enhancements - Add new data entry fields throughout the application - Modify existing forms and layouts - Improve usability and workflow efficiency - Ensure data validation and proper field formatting 2. Title Data Management - Enhance title search and chain-of-title data entry screens - Support additional title-related information fields - Maintain automatic organization and sorting of title records 3. Dynamic Document Assembly - Complete the document generation system - Generate Microsoft Word documents from entered data - Populate templates with user-entered information - Conditionally include or exclude sections based on available data - Support dynamic chain-of-title sections (for example, if there are 9 title transfers, generate 9 sections instead of a fixed number) 4. Mapping Features - Complete mapping functionality - Display property-related mapping information - Integrate mapping data into the workflow where appropriate Ideal Candidate - Strong React experience - Experience working with existing codebases - Experience with AWS deployments - Experience with document generation and template systems - Ability to understand business workflows and recommend improvements - Strong communication skills Deliverables - Review existing application and provide assessment - Complete outstanding features - Test all functionality - Deploy updates to production environment - Provide documentation for future maintenance To Apply Please provide: 1. Relevant React projects you have completed 2. Experience working with AWS 3. Experience with dynamic document generation or template systems 4. Estimated availability 5. Your approach to taking over and completing an existing application We are looking for a long-term relationship with a developer who can continue improving the platform after the initial project is completed.

We’re hiring a hands-on full-stack developer to help build and maintain a production truck dealer management platform supporting inventory, financing workflows, logistics, and internal operations. You’ll work in a TypeScript monorepo building React + TypeScript features with MUI, React Query, React Hook Form, and Zod, maintaining Express APIs and Firebase Cloud Functions, evolving shared domain models used across frontend and backend, and shipping reliable, testable improvements across core business areas.

I need an experienced React Native developer to complete a focused update to an existing GPS-based mobile app within one working day. The main tasks are: * Review the current React Native project * Add a few new map or GPS objects such as markers, locations, zones, routes, or overlays * Update existing map object behavior if needed * Fix current iOS or Android build and deployment problems * Resolve configuration, permissions, signing, certificate, or provisioning issues * Create a working production or test build * Clearly document any remaining issues that cannot be completed within the day The developer should have strong experience with React Native, GPS and map integrations, Xcode, Android Studio, App Store Connect, and Google Play Console. This is a short, urgent project. You must be available to start immediately and work directly with us until the main issues are resolved. Please include: * Similar React Native GPS or mapping experience * Your experience solving iOS and Android deployment errors * Confirmation that you can dedicate one full day to the project * Your fixed price or hourly rate for the day The codebase and full task details will be shared with the selected developer.

We are looking for a software developer to build a project management system from scratch. The application will include four roles: - Administrator: Manage users, departments, teams, projects, and project documents - HR Manager: Add employees and assign departments, positions, teams, and managers - Team Manager: Review assigned projects, add requirements, create tasks, and review employee submissions - Employee: View assigned tasks, update progress, and upload completed work Main Features: - Secure JWT authentication and role-based access - Employee, department, team, and project management - Task assignment with priorities, deadlines, and status tracking - Document upload and management - Employee work submissions with approval, rejection, and change requests - Dashboard with project and task statistics - Search, filtering, sorting, and pagination - Responsive UI for desktop and mobile

I need a full-stack developer to build a simple AI-powered chat assistant. The app should allow users to type a question and receive a response from the ChatGPT API. The UI should be clean, responsive, and built with React and TypeScript. Main Requirements: - Build a simple React + TypeScript frontend - Add a chat input and response area - Connect the app to the ChatGPT/OpenAI API - Show loading state while the AI is responding - Handle basic API errors - Keep the code clean and easy to understand - Provide short setup instructions in a README file

I have created a web version of a card-sorting college matching app for high school students. I need it rebuilt as a native iOS React Native app. This is a well-scoped job with a working product, an existing backend, and clear deliverables. You are not figuring out what to build, you are converting something that already works into a IOS App. TECH STACK • React Native (bare or Expo — justify your choice) • Gesture-based card UI using industry-standard React Native animation libraries • Calls an existing backend API that returns AI-generated college matches • Source code available on GitHub upon signing NDA • Target: iOS 16+ | Must be built with latest Xcode and iOS SDK TO APPLY YOU MUST INCLUDE: 1. One live App Store links to React Native apps you have shipped 2. Confirmation you are running Xcode 26 3. Two sentences on how you would implement the drag-to-zone card gesture. Applications missing any of the three will not be reviewed. Looking for one developer who has shipped gesture-heavy iOS apps and knows App Store submission from experience.

Title: React Native Mobile Developer – Music & Influencer Marketing App (Remote, PST Hours) Description: We’re sound.me, a fast-growing platform at the intersection of influencer marketing and music promotion. We’re looking for a skilled React Native developer to join our remote team and help build the future of music discovery. What You’ll Work On -Building and maintaining cross-platform mobile features on iOS and Android -Integrating with our AWS backend (API Gateway, Lambda, DynamoDB, S3) -Collaborating with designers and product to ship polished, performant UIs -Writing clean, testable, well-documented code Required Skills & Experience -3+ years of React Native development -Strong JavaScript/TypeScript fundamentals -Experience consuming RESTful APIs and working with AWS services -Familiarity with app store deployment (Apple App Connect, Google Play) -Solid understanding of mobile UX patterns and performance optimization Nice to Have -Experience in music tech, creator economy, or social apps -Experience with push notifications, deep linking, and analytics SDKs Requirements -Available during PST business hours -Strong English communication skills -Portfolio or GitHub with React Native work -Must be willing to sign an NDA