Rate: $10/hr | 40 hrs/week | Long-term contract Job Success Score: 90% minimum required Individual developers only — no agencies ⚠️ This is NOT a greenfield build. The app already exists and is in active development. We are looking for a strong, senior React Native developer who can take ownership, write clean production-ready code, and help us get to launch without endless back and forth on PRs. ⛔ No major refactors ⛔ No new features unless explicitly approved ⛔ No “I rewrote everything” approaches About GoShopBlack: GoShopBlack is a marketplace mobile app that connects users with Black-owned businesses. The app is built in React Native with a Supabase backend and has draft builds on both Google Play and the Apple App Store. I do regular code reviews via GitHub and expect PRs to be tested, clean, and production-ready before submission. This is a serious long-term role — not a one-off project. Hours can increase for the right developer. What You'll Be Working On: - Ongoing React Native development for iOS & Android - Search and filter system by location, category, and business type - Google Maps API integration (not yet built — this is a key upcoming feature) - Business profiles (hours, contact info, website links, reviews) - Customer ratings and review system - Business submission and admin approval flow - E-commerce integration for businesses that sell online - Social login (Facebook & Gmail) plus email/password auth - Phase 2: push notifications, in-app messaging, ad integration, AI recommendations What I'm Looking For: - Senior-level React Native experience — you must show me apps you have shipped to the App Store and Google Play - Strong Supabase experience — this is our backend, no Firebase or AWS - Google Maps API integration experience - GitHub proficiency — include your GitHub profile in your proposal - Job Success Score of 90% or higher - Clean, well-structured code with no demo or test code in PRs - Someone who self-tests thoroughly and does full end-to-end testing before submitting a PR - Strong communicator who gives daily updates and flags issues early - Weekly proof of progress required (Git commits, test builds, or screen recordings) - Must be comfortable with Hubstaff time tracking from day one - Must be willing to sign an NDA and contract before starting Deliverables • Business profiles with operating hours, contact info, links, and gallery • Google Maps API integration for directions • Customer rating & review system • Business submission (enable businesses to submit details for approval) • UI/UX polish: clean, modern, mobile-optimized interface • App Store deployment: finalize builds & publish to Google Play & Apple App Store • • Future Enhancements (Phase 2 – Optional): • Membership/subscription for premium business listings • Push notifications for promotions and new listings • In-app messaging/chat • In-app transactions for e-commerce listings • AI-powered recommendations • Social/community features • • Requirements: • Fluent in English (speaking & writing) • Proven experience in Flutter (React Native also considered) • Backend experience with Supabase / Firebase / Node.js • Strong Google Maps API integration experience • Experience publishing apps on Google Play & Apple App Store • Strong UI/UX design sense • Ability to provide weekly proof of progress (commits, test builds, or demos) • Willingness to sign an NDA and contract • • How to Apply: • Please start your proposal with the word Love (to confirm you read the full post). • • Include: • Examples of previous apps you’ve developed (especially directories, e-commerce, or review systems) • A short outline of how you would approach reviewing and completing this project. • • Confirmation that you can commit to $1,600/month on weekly milestones.

Backend Developer Needed for Consumer Caregiver App We’re building a caregiver app that helps families keep track of a loved one’s care information, including diagnoses, medications, surgeries, notes, and tasks. This is a direct-to-consumer app, not a hospital or clinic product, so we need someone who can build a secure, privacy-first backend for sensitive health data. What you’ll build: - User authentication and account management. - Care recipient profiles. - Structured health records for diagnoses, medications, surgeries, allergies, appointments, notes, and care tasks. - Role-based sharing for multiple caregivers. - Secure file storage for documents or images. - Audit/activity logging. - Export and deletion features. - Admin tools for support and account recovery. What we need: We’re looking for a backend developer who can build a clean, secure, production-ready system with strong privacy controls. Required experience: - Strong backend development experience. - Experience with Postgres and secure API design. - Understanding of authentication, authorization, and role-based access control. - Experience with encryption, secure file storage, and logging. - Comfortable working with consumer health or sensitive data. - Ability to document architecture and hand off code cleanly. Nice to have: - Experience with healthcare, healthtech, or privacy-sensitive apps. - Experience with Supabase or AWS. - Familiarity with FTC health privacy expectations for consumer apps. - Experience designing systems that can scale into stricter compliance later. Preferred stack For this project, we’re leaning toward a cost-friendly, modern stack such as: - Front end: Lovable. - Backend: Supabase or a similar managed Postgres backend. - Auth: built-in auth with strong password/session handling. - Storage: private file storage. - Permissions: row-level security or equivalent. - Optional server logic: edge functions or a small Node service. If you think a different stack is better, explain why. Security and privacy expectations: This app will store sensitive family health information, so security matters a lot. We need the backend to include: - Encryption in transit and at rest. - Strong access controls. - Minimal data collection. - No unnecessary third-party tracking or ad-tech. - Audit logs for important actions. - Secure password handling. - Private storage and restricted file access. - Clear privacy-aware architecture. Important note: This is not a hospital backend. We do not need a complex enterprise healthcare platform on day one. We do need someone who understands how to build a secure consumer health app properly, with the option to evolve later if the product grows. Deliverables: 1. A short architecture proposal. 2. Recommended stack and rationale. 3. Basic database schema. 4. Security and permissions plan. 5. Estimated timeline and budget. 6. Build the MVP backend after approval. Please send: - A short intro. - Relevant backend projects. - Any healthcare, privacy, or sensitive-data experience. - Your preferred stack. - Your estimated cost and timeline. - One example of a backend system you’ve built that required careful permissions or security.

We are looking for a senior engineer/consultant with experience building Next.js and Node.js applications hosted with AWS. The ideal candidate has worked on high-traffic sites with very large route/page counts and understands production performance, reliability, memory usage, caching, load testing, and cloud infrastructure. Experience required: Next.js / React Node.js AWS production hosting Docker/containerized deployments MongoDB OpenSearch or Elasticsearch Large-scale public sites with millions of pages We need help reviewing the application and infrastructure, identifying performance and reliability risks, diagnosing production issues, and recommending or implementing fixes. Please only apply if you have direct experience with this technology stack and websites at this scale.

We are a medically backed, pre-seed healthtech platform preparing for an immediate enterprise pilot deployment. Our core user interface, interactive data features, and content architecture are functionally built utilizing modern AI-assisted development tools. We are seeking a senior, hands-on engineer with specific healthtech deployment experience to serve as our Execution Contractor for an immediate hardening sprint. You will own the backend security architecture, external cloud infrastructure configuration, and technical compliance validation required to transition our high-fidelity MVP into a secure production environment. What You’ll Do Harden Backend Security: Transition frontend route guards into strict, server-side authentication and authorization boundaries across all data-access paths. Architect Secure Infrastructure: Migrate core data architectures out of staging environments and securely provision an external, HIPAA-compliant cloud database tier. Manage Vendor & Compliance Workflows: Audit our technical vendor stack to securely embed enterprise API protocols, ensuring strict data handling and compliance alignment across all integrated platforms. Validate & Sign-Off: Run edge-case testing and performance audits to completely secure data handling pipelines, delivering a technical go/no-go sign-off for our upcoming pilot cohort. The Technical Stack Frontend: React 18+, TypeScript Backend: Node.js, Express.js Database/ORM: PostgreSQL via Drizzle ORM Environment/Tooling: WebSockets, Enterprise AI APIs, Secure Cloud Infrastructure (AWS / Supabase) Who You Are A seasoned full-stack or backend engineer with a proven track record of successfully deploying applications into live clinical, medical, or heavily regulated environments. Deeply knowledgeable in server-side encryption, data pseudonymization, and secure cloud networking. Highly comfortable inheriting, auditing, and optimizing architectures built alongside AI-assisted development workflows. An execution-focused builder who thrives in high-velocity sprints and values absolute production discipline. To Apply: Please submit your proposal directly through Upwork with a brief summary of your healthtech deployment experience, specifically highlighting your experience with secure data pipelines, PostgreSQL, and HIPAA configurations.

We are seeking a skilled freelancer to create an Amazon listing from scratch for our new product launch. The ideal candidate will have experience in crafting compelling product descriptions, optimizing listings for search, and ensuring compliance with Amazon's policies. Creativity and attention to detail are essential for this role. If you have a proven track record in Amazon listing creation, we would love to hear from you!

I got accepted into the Amazon Associates program and trying to apply for the influencer program but I can figure out why I'm getting the following error - Oops! You don't currently have a live Facebook page attached to your account. Please update your account or apply using an alternative social media option.

We are looking for an experienced Full Stack Developer to help build and enhance a custom business web application with admin dashboard functionality, user management, API integrations, database-driven features, and a modern responsive frontend. This is not a SaaS project. The application is a custom internal/business platform designed to improve operations, manage users, organize data, connect third-party services, and provide a clean dashboard experience for internal teams and business users. The ideal developer should be comfortable working across the full stack, from frontend UI development to backend API architecture, database structure, authentication, role-based access, third-party integrations, and deployment support. Key responsibilities include: • Build and improve custom web application features • Develop clean, responsive frontend interfaces • Create and enhance admin dashboard functionality • Implement user management and role-based access control • Build secure backend APIs and database-driven workflows • Connect third-party APIs and business tools • Create forms, filters, tables, reports, and dashboard views • Improve application performance and user experience • Work with authentication, authorization, and protected routes • Support deployment and final project handoff • Document completed work and technical decisions Required skills: • Full Stack Development • Web Application Development • React.js • Next.js • Node.js • Express.js • TypeScript • JavaScript • REST API Development • API Integration • Admin Dashboard Development • User Management • Role-Based Access Control • Database Management • PostgreSQL / MongoDB / MySQL • Responsive Web Design • Git / GitHub Nice to have: • Experience building business management platforms • Experience with internal tools and admin dashboards • Experience with CRM, payment, email, or third-party integrations • Experience with AWS, Docker, CI/CD, or deployment workflows • Strong understanding of clean, scalable application architecture • Ability to work independently and provide clear progress updates Project expectations: We are looking for someone who can take ownership of assigned features, understand business requirements, and deliver clean, maintainable, production-ready work. The right developer should be able to think beyond individual tasks and help suggest better ways to structure features, improve workflows, and create a more reliable application. This project may include ongoing work if the initial collaboration goes well, including additional features, dashboard improvements, API integrations, automation workflows, and long-term application enhancements. To apply, please include: - Your experience with custom web applications - Examples of admin dashboards or internal tools you have built - Your strongest frontend and backend stack - Your experience with API integrations - Your availability this week We are looking to start soon and would prefer someone who can communicate clearly, work independently, and deliver high-quality full stack development work.

# Project Overview We are an academic research team seeking an experienced web developer to build a standalone randomization platform for a heat pump incentive program in coordination with a municipal government. This is a fixed-price contract for a well-defined project supporting a randomized controlled trial (RCT) embedded in a municipal energy efficiency initiative. Estimated cost $15,000-$35,000. # What We Need A web-based platform with two user portals: (1) Household Portal: Email verification for authentication (verification code sent to email address), address entry with autocomplete validated against pre-loaded eligible address database, deterministic random assignment to rebate tiers (Standard or Enhanced), and confirmation display/email. Optional: password-protected login if email verification proves insufficient during testing. (2) Contractor Portal: Password-protected lookup interface where each contractor can create their own account credentials (anticipated 10-20 contractor organizations, each with multiple workers who may share the organization's login). Contractors can look up any address to verify customer rebate tier assignment and eligibility. # Key Technical Requirements * Deterministic randomization: Same address must always receive the same treatment assignment (use address hash or similar) * Address standardization and validation against pre-loaded CSV (~100,000 eligible addresses) * Email verification system for household authentication * Cloud-hosted standalone database (not on city servers) * Mobile-responsive design, clean and professional interface * Admin interface for CSV upload and data export * Approximately 12 months hosting and technical support included * Multi-language support (English/Spanish) # Project Details * Timeline: Development complete by end of September 2026 (~12-16 weeks from contract start) * Scale: Academic research project, not production-scale. Anticipated users: 500-2,000 households, 10-20 contractors * Budget: Fixed-price contract. Please provide detailed breakdown in your proposal. * Deliverables: Fully functional platform, source code with repository access, documentation, 12 months hosting and support # What We're Looking For * Experience building web applications with address validation/autocomplete * Strong portfolio demonstrating similar projects (please include links) * Familiarity with randomization algorithms and ensuring reproducibility * Experience with cloud hosting platforms (AWS, Google Cloud, Azure, etc.) * Excellent communication skills and ability to work with non-technical stakeholders * Available to start within 2-3 weeks of contract award * Must be based in the US and have a US work authorization. # To Apply Please submit a proposal including: * Proposed high-level architecture * Key tech stack choices and why * Approach to randomization, contractor verification, data security * Estimated timeline and cost range * Links to 2-3 similar completed projects Note: This is an academic research project supporting a municipal program. We value simplicity, reliability, and clear communication. The platform does not need to scale beyond the stated user numbers but must be robust and maintainable.

Amazon Store & Listing Expert Needed for Premium Consumer Brand Launch About Us Clean Boys is a new premium men's hygiene and wellness brand launching in July 2026. Our hero product is a premium flushable men's wipe designed with a modern, elevated brand aesthetic inspired by Australian beach culture and Southern California. Our first production run consists of 10,000 units, and we're preparing to launch simultaneously on Shopify and Amazon. We're looking for an experienced Amazon expert to build a best-in-class Amazon presence from the ground up. Scope of Work We are seeking someone who can: Create and optimize our Amazon Seller Central account Build our Amazon Brand Store. Create a high-converting product listing. Perform keyword research specific to the men's hygiene category. Write SEO-optimized product title, bullet points, backend search terms, and product description. Upload all listing content and images. Configure Amazon FBA settings and shipping workflow. Ensure our listing is fully compliant with Amazon policies. Set up A+ Content and Brand Story. Prepare the account for launch, including inventory readiness. Provide recommendations for launch strategy and best practices. Assets We Will Provide Product packaging Lifestyle photography Product images Brand guidelines Logo files Product specifications GS1 UPC barcode FNSKU labels (if required) Marketing copy and brand story Requirements Please apply only if you have experience launching consumer product brands on Amazon. Your proposal should include: Examples of Amazon stores or listings you have built. Experience with CPG, wellness, personal care, or consumer goods brands. Your recommended launch strategy. Estimated timeline. Experience with: Amazon PPC Listing optimization Amazon SEO Brand Registry Product launch strategy Consumer packaged goods (CPG) Personal care or wellness brands Goal We're not looking for someone to simply upload a listing. We're looking for an Amazon partner who understands branding, conversion optimization, SEO, and launch strategy, and can help position Clean Boys as a premium brand from day one. Please begin your proposal with the words "Stay Ready" so we know you've read the full job description.

We are seeking a skilled Amazon Product Management Specialist to modify and maintain our Amazon products. The role involves optimizing product listings, managing inventory, and ensuring accurate product information. The ideal candidate will have experience with Amazon product management and be able to work efficiently to improve product performance and maintain listings effectively.