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    5,000 graphql löydetyt työt

    I’m ready to turn a set of detailed Figma screens and a fully documented REST/GraphQL API into a fast, elegant online store, and I’m looking for a React expert to own the front-end build. The work centres on creating a production-ready React code-base that: • renders the catalogue, product detail, cart and multi-step checkout flows • consumes our API endpoints via hooks, handles loading and error states gracefully, and keeps the UI responsive at all break-points • uses modern patterns (functional components, hooks, context or Redux for state, React Router for navigation) with clean, well-commented code • applies accessible, WCAG-friendly styling (CSS-in-JS, Tailwind or plain CSS modules—your choice) exactly as in Figma • integrates payment...

    €6 / hr Average bid
    €6 / hr Keskimäär. tarjous
    51 tarjoukset

    ...12 ecosystem websites (RWA tokenization, MFO, investor clubs, AI, MCP, etc.). Gradually move away from a “WordPress everywhere” approach towards: a shared backend in Node.js/TypeScript, and modern frontends in React/Next.js. Strengthen security, consistency, and prepare for a future central application and mobile apps. Target Stack Backend Node.js + TypeScript ( or similar). REST and/or GraphQL APIs. Authentication, roles/permissions, multi‑site / multi‑tenant. External integrations: KYC/KYB, fintech, AI, MCP servers, etc. Web Frontend React + (SSR/SSG, SEO, multilingual, high performance). Clean, elegant UX suitable for finance / MFO / investor environments. WordPress Used on several existing sites . Your role is to: possibly use WP headless in the short term, and...

    €484 Average bid
    €484 Keskimäär. tarjous
    292 tarjoukset

    Gestisco un tour operator e desidero integrare soluzioni di intelligenza artificiale per ridurre i costi operat...nostro CMS/CRM e al sistema di booking. 3. Addestramento iniziale su dataset forniti (FAQ, itinerari, termini di vendita). 4. Test di precisione e fine-tuning fino al rilascio in produzione. 5. Documentazione tecnica e formazione breve al personale interno. Requisiti desiderati • Esperienza comprovata in progetti AI per travel, hospitality o e-commerce. • Conoscenza di integrazioni REST/GraphQL e sicurezza dati GDPR. • Capacità di consegnare codice ben documentato e misurare KPI (tempo di risposta, tasso di conversione). Tempistiche e modalità di collaborazione da concordare; sono disponibile a call di allineamento per definire ...

    €1158 Average bid
    €1158 Keskimäär. tarjous
    96 tarjoukset

    ...* 21 dynamic pages * Custom content types & structured CMS architecture * Dynamic sections (banners, services, blogs, forms, etc.) * Role-based access control * SEO-friendly architecture * Media management setup * API integration with frontend ### Technical Stack: * **Backend:** Strapi (latest version) * **Frontend (Preferred):** * **Database:** MySQL or PostgreSQL * REST or GraphQL API integration * Deployment knowledge required (VPS / Cloud) ### Expectations: * Clean, scalable, and modular code structure * Proper content modeling strategy * Performance optimization * Secure configuration * Documentation for content management * On-time delivery ### To Apply, Please Share: * Your Strapi + portfolio * Similar CMS-based dynamic projects * Estimated timeline * Fixed

    €255 Average bid
    €255 Keskimäär. tarjous
    73 tarjoukset
    Calling CRM System Development
    6 päivää left
    Varmennettu

    ...through a visual editor. – Subscription & billing: stripe-style recurring billing module for seat licences and plan upgrades. Key calling feature • Auto-dialing baked into every lead list, with disposition capture after each call. Deliverables 1. Responsive web application (React, Vue, or similar) fully deployed. 2. Native Android app sharing the same backend and real-time data. 3. REST/GraphQL API documentation. 4. Admin guide and agent quick-start manual. 5. One-month post-launch support for bug fixes. Acceptance criteria • Single-sign-on across web and Android. • Less than two-second lead screen load time. • Successful push of leads from at least one social platform and one lead-gen site during UAT. • Auto-dialer conn...

    €326 Average bid
    €326 Keskimäär. tarjous
    84 tarjoukset

    ...perform smoothly on each platform from the first build. THIS JOB IS IN THE US TIME ZONE ONLY + NEED WEEKEND AVAILABILITY The initial assignment is urgent—bug squashes and a small new module need to ship ASAP—yet the larger goal is an ongoing collaboration. Once we clear this immediate milestone together, you’ll roll straight into our regular sprint cycle, building new screens, integrating REST/GraphQL APIs, writing unit tests, and taking part in code reviews on GitHub. To get a quick read on your fit, please link to past work that clearly shows: • A production Flutter app • A production React Native app These examples need to be live in the stores or at least accessible via TestFlight / internal track; code snippets alone aren’t enough. I&rsq...

    €14 / hr Average bid
    €14 / hr Keskimäär. tarjous
    153 tarjoukset

    ...exposes a clean API, and gives me an administrator console I can actually run the business from. Wallet core The service must let every user check their balance, browse an accurate transaction history, and send or receive cryptocurrency with on-chain confirmation. Speed and reliability are paramount, so efficient queueing and retry logic will be essential. Public API I need a REST/JSON (GraphQL is fine if you can prove the advantage) layer that provides secure user authentication, up-to-the-minute cryptocurrency exchange rates, and full transaction processing. Token-based auth, rate-limiting, and thorough input validation are non-negotiable. Please document the endpoints in Swagger or an equivalent tool so my front-end team can plug straight in. Administrator control panel...

    €544 Average bid
    €544 Keskimäär. tarjous
    102 tarjoukset
    iOS E-Commerce App Development
    5 päivää left
    Varmennettu

    ...developer who can take it from wireframes to TestFlight. The app must let customers browse a full product catalog, add items to a persistent shopping cart, and check out through a payment gateway that supports Apple Pay or Stripe. For sign-in, I only want social media options—Apple, Google, or Facebook—so users can start buying with a single tap. You’ll receive finalized UI designs plus backend REST/GraphQL endpoints; your role is to build the Swift/SwiftUI front end, integrate the APIs and payment SDKs, and make sure everything passes App Store review. Deliverables • Xcode project with clean, well-commented Swift code • Product catalog, cart, and checkout flows fully functional • Social login implementation (no email/password flow) &bul...

    €104 Average bid
    €104 Keskimäär. tarjous
    100 tarjoukset

    ...payout requests and an admin override. • Data processing & signal analysis – crunch booking data to flag peak periods, forecast occupancy and surface insights in the admin dashboard. Development expectations – Native-feel cross-platform codebase (Flutter, React Native or similar) compiled for the App Store and Google Play. – Scalable backend (Node.js, Laravel or equivalent) with REST/GraphQL APIs, role-based access, encrypted data and automated unit/integration tests. – Push notifications, email receipts, referral links, QR check-ins, multi-currency support and a web admin panel. – Clean, well-commented source code, schema and API documentation, plus a short hand-over workshop once the build is accepted. Acceptance criteria 1...

    €9 / hr Average bid
    €9 / hr Keskimäär. tarjous
    61 tarjoukset
    AI Cloned Booking Platform
    5 päivää left
    Varmennettu

    ..., Hipcamp, Bookeasy, Big4, G'Day Parks, etc. Email and SMS communication. Front end and back-end functional on both laptop and phones (85% on bookings are on mobile devices). Enhanced requirement • Loyalty program integration so returning guests automatically earn and redeem points. I expect a modern, modular codebase (React / Vue / Angular on the front end and a robust REST or GraphQL API on the back) plus clear database schema and migration scripts. All intellectual property must be delivered to me, including source code, build instructions, and a short hand-over video. Acceptance criteria 1. Feature parity in the three core areas listed above, proven via side-by-side functional demo. 2. Loyalty module active and usable from the same admin panel. 3. Paymen...

    €9084 Average bid
    €9084 Keskimäär. tarjous
    158 tarjoukset

    ...providers, and Admin—each with its own dashboard and permissions. Core flows include real-time availability search, price and inventory management for providers, secure checkout, and a clean admin console for oversight and reporting. I’m flexible on the tech stack, but modern, well-documented frameworks (think React or Vue on the front end, Node.js, Laravel, or similar on the back end) and RESTful or GraphQL APIs are preferred so the platform can scale. Payment gateway integration (Stripe, PayPal, or your recommended option) and mobile-responsive design are essential. Deliverables • Fully functional web application covering the four booking modules • Role-based access controls for Guests, Service providers, and Admin • Provider portal to add, ed...

    €552 Average bid
    €552 Keskimäär. tarjous
    273 tarjoukset

    ...perform smoothly on each platform from the first build. THIS JOB IS IN THE US TIME ZONE ONLY + NEED WEEKEND AVAILABILITY The initial assignment is urgent—bug squashes and a small new module need to ship ASAP—yet the larger goal is an ongoing collaboration. Once we clear this immediate milestone together, you’ll roll straight into our regular sprint cycle, building new screens, integrating REST/GraphQL APIs, writing unit tests, and taking part in code reviews on GitHub. To get a quick read on your fit, please link to past work that clearly shows: • A production Flutter app • A production React Native app These examples need to be live in the stores or at least accessible via TestFlight / internal track; code snippets alone aren’t enough. I&rsq...

    €14 / hr Average bid
    €14 / hr Keskimäär. tarjous
    177 tarjoukset
    Mobile OCR AI Web Frontend
    4 päivää left
    Varmennettu

    I need a clean, modern, minimalist frontend that guides mobile users through four key moments: logging in, opening the phone camera from the browser, sending each capture to my backend for both OCR and AI image recognition, and finally displaying a running points balance that can be exchanged in a small reward catalogue. The project is strictly front-end: I will expose REST/GraphQL endpoints for authentication, image upload/analysis, point bookkeeping and catalogue data. You wire the UI, handle state, and ensure a smooth hand-off of images taken with the mobile camera (desktop fallback is a plus but not essential). Feel free to recommend the stack—React + , Vue 3, or a similarly lightweight SPA framework are all acceptable as long as it stays performant on mobile. Core deliv...

    €13 / hr Average bid
    €13 / hr Keskimäär. tarjous
    182 tarjoukset

    ...sign-up/login, bill entry and editing, automated reminder scheduling (push / email), and a dashboard that aggregates expenses by category, date, and total. • Tech choice – I’m open to any modern stack you are comfortable with. Feel free to propose React, Angular, Vue, Flutter, Kotlin, or something else, as long as the final result is maintainable and well-documented. • Back-end – Expose secure REST or GraphQL endpoints, handle all CRUD operations, and store data in a lightweight cloud database (Firebase, Supabase, MongoDB Atlas, etc.). • Delivery – Source code in a public or private Git repo, brief documentation for set-up and deployment, plus APK or Play Console bundle and a live web link for review. Acceptance A user should be abl...

    €109 Average bid
    €109 Keskimäär. tarjous
    43 tarjoukset

    ...(grafikler, metrikler, filtrelenebilir geçmiş veriler) • Gerçek zamanlı veri görüntüleme (live dashboard, anlık uyarılar) • WhatsApp ve Google Calendar entegrasyonu özelliklerini taşıması gerekiyor. Tasarım tercihim minimalist ve sade; gereksiz görsel karmaşadan uzak, mobil uyumlu ve hızlı yüklenen bir arayüz bekliyorum. Arka planda kullandığınız teknoloji konusunda esneğim; RESTful veya GraphQL API’ler üzerinden otomasyonuma bağlanmanız yeterli. Teslimatta: 1. Çalışır kaynak kodu (Git deposu). 2. Temiz dökümante edilmiş kurulum ve deploy talimatları. 3. Kısa bir kullanım kılavuzu. Proje boyunca düzenli ilerleme güncellemeleri ve kod gözden geçirmeler...

    €117 Average bid
    €117 Keskimäär. tarjous
    14 tarjoukset

    ...via Razorpay’s SDK and REST endpoints) with secure webhooks for payment confirmations and refunds. • Modular seller onboarding with KYC document upload, verification status tracking, and the ability to plug in third-party verification services later. • Scalable data models for products, variants, inventory, and orders—optimised for quick search and high-volume writes. • Versioned REST (or GraphQL if you prefer) endpoints, comprehensive unit/integration tests, and clear Swagger/OpenAPI documentation so frontend teams can consume services instantly. • Logging, rate-limiting, and role-based access control baked in from day one to ease future audits and compliance checks. What I’d like to see from you 1. A brief outline of the tech s...

    €240 Average bid
    €240 Keskimäär. tarjous
    97 tarjoukset
    Hospitality Mobile App Development
    4 päivää left
    Varmennettu

    ...comments without technical hassle. Technical considerations • Native or cross-platform frameworks (Swift, Kotlin, Flutter, React Native) are acceptable—please outline the option you recommend and why. • A modular architecture is important so new services (spa appointments, loyalty wallet, or in-app payments) can be added later without rebuilding the core. • Clean, well-documented code, REST/GraphQL APIs and secure user authentication are must-haves. Deliverables 1. Wireframes and clickable prototype for approval 2. Fully functional app package and source code 3. Admin dashboard with deployment instructions 4. Post-launch bug-fix window and knowledge-transfer session Acceptance criteria The build is considered complete when the app pas...

    €11 / hr Average bid
    €11 / hr Keskimäär. tarjous
    213 tarjoukset
    Binary MLM Resort Booking App
    4 päivää left
    Varmennettu

    ...payout requests and an admin override. • Data processing & signal analysis – crunch booking data to flag peak periods, forecast occupancy and surface insights in the admin dashboard. Development expectations – Native-feel cross-platform codebase (Flutter, React Native or similar) compiled for the App Store and Google Play. – Scalable backend (Node.js, Laravel or equivalent) with REST/GraphQL APIs, role-based access, encrypted data and automated unit/integration tests. – Push notifications, email receipts, referral links, QR check-ins, multi-currency support and a web admin panel. – Clean, well-commented source code, schema and API documentation, plus a short hand-over workshop once the build is accepted. Acceptance criteria 1...

    €1256 Average bid
    €1256 Keskimäär. tarjous
    144 tarjoukset

    Backend / Full Stack Developer (Node.js, React, MongoDB, PostgreSQL) – 5+ Years Experience Location Remote / Hybrid Experience Required 5+ Years Employment Type Full-Time About the Role We are looking for an experienced Backend / Full Stack Developer ...microservices architecture. • Experience with Git and CI/CD pipelines. • Good understanding of authentication (JWT, OAuth) and security best practices. • Experience with cloud platforms (AWS, GCP, or Azure) is a plus. • Familiarity with Docker and containerized deployments is an advantage. • Strong problem-solving and debugging skills. Nice to Have • Experience with TypeScript. • Knowledge of GraphQL. • Experience working in Agile/Scrum teams. • Exposure to DevOps practices. • E...

    €153 Average bid
    €153 Keskimäär. tarjous
    159 tarjoukset

    ...interactive web application—built as a single, cohesive code-base. Everything must be modern, fully responsive, and branded with a clean, intuitive UI/UX. Tech stack is already set: Angular on the frontend and a Node.js (Express) backend. Expect secure, stateless authentication (JWT or OAuth, whichever you judge best), role-based access, and a well-structured REST API that can later expand to GraphQL if needed. Data will live in either MySQL, PostgreSQL, or MongoDB; I’m open to whichever you recommend once requirements are refined. Core functionality • Public-facing pages for visitors • A logged-in web app with real-time notifications • Separate admin dashboard for user, content, and settings management • Complete API layer to support futur...

    €220 Average bid
    €220 Keskimäär. tarjous
    28 tarjoukset

    ...model that takes my existing data, produces reliable forecasts, and is simple enough to slot straight into a lightweight product demo. Here’s the scope in plain words: • Select and train an algorithm that balances accuracy with speed—feel free to use Python, TensorFlow, PyTorch, or another framework you prefer, so long as the environment is reproducible. • Wrap the model in a small REST or GraphQL API so I can call predictions from a basic front-end. • Hand over deployment instructions for a cloud environment (AWS, GCP, or Azure—your choice) so the MVP runs in a real setting, not just your local machine. Acceptance for completion 1. Model hits agreed accuracy metrics on a held-out test set. 2. Endpoints respond in under one second fo...

    €355 Average bid
    €355 Keskimäär. tarjous
    59 tarjoukset

    ...receive orders, update statuses in real time, and navigate to addresses; plus a secure admin panel where I can manage inventory, prices, users, promotions, and review analytics. To keep everything maintainable, please use a modern cross-platform stack (Flutter, React Native, or a solid native duo of Swift and Kotlin—your call, just explain your choice) connected to a scalable backend with REST or GraphQL APIs. Push notifications, basic order tracking, and App Store/Google Play submission support are expected. Deliverables • Source code for customer, delivery, and admin apps • Ready-to-deploy backend with documentation • UI/UX assets and build files • Live builds published to both stores and a brief hand-over session Acceptance will be ba...

    €268 Average bid
    €268 Keskimäär. tarjous
    53 tarjoukset

    ...JWT-based auth, and a cloud database (MongoDB, PostgreSQL, or similar). If you prefer another combination that still gives me a clean, responsive UI, I’m flexible. Deliverables • Fully responsive UI with appointment scheduling as the focal point • Direct-contact hospital directory integrated into the same workflow • Secure user management (registration, login, role-based access) • REST or GraphQL API with unit tests • Deployment script or CI/CD pipeline to push to AWS, Azure, or DigitalOcean Acceptance Criteria • Book a doctor appointment from any device in ≤3 steps • Hospital contact button visible on every results page, functioning across devices • All endpoints protected with token-based auth and HTTPS enfo...

    €268 Average bid
    €268 Keskimäär. tarjous
    37 tarjoukset

    ...that lets drivers book automotive services The core flow is simple: users create an account (email, phone, or social login),check real-time availability, reserve a time, then pay securely without ever leaving the app. Both iOS and Android need to feel identical in look and speed, so I’m expecting Swift/SwiftUI on the Apple side and Kotlin with Jetpack on Android, backed by a single REST or GraphQL API. South African gateway must handle payments, supporting saved cards and one-touch checkout via Credit Card (VISA) or selected electronic transfers as well as PayPal etc. Please show me past work that demonstrates: • native builds (no hybrid wrappers) • secure login implementation • a live payment gateway integration I’ll share wireframes...

    €6 / hr Average bid
    €6 / hr Keskimäär. tarjous
    64 tarjoukset

    ...parts, export to CSV) I’m expecting clean, maintainable code with modern frameworks—React Native or Flutter for the mobile side and something like React, Vue, or Angular on the web front end are all fine as long as the stack supports real-time functionality (WebSockets or Firebase) and scales. The back end is still open; Laravel, Node, or Django work for me so long as it exposes a documented REST/GraphQL API and pairs easily with a relational database. Key deliverables • Fully functional iOS and Android builds published to TestFlight/Google Play internal testing • Deployed web dashboard with secure login, hosted in my AWS or GCP account • Source code in a private Git repo with readable commit history and instructions to stand up the stack in a fresh e...

    €6037 Average bid
    €6037 Keskimäär. tarjous
    224 tarjoukset

    ...export to CSV) I’m expecting clean, maintainable code with modern frameworks—React Native or Flutter for the mobile side and something like React, Vue, or Angular on the web front end are all fine as long as the stack supports real-time functionality (WebSockets or Firebase) and scales. The back end is still open; Laravel, Node, or Django work for me so long as it exposes a documented REST/GraphQL API and pairs easily with a relational database. Key deliverables • Fully functional iOS and Android builds published to TestFlight/Google Play internal testing • Deployed web dashboard with secure login, hosted in my AWS or GCP account • Source code in a private Git repo with readable commit history and instructions to stand up the stack in a fresh ...

    €500 Average bid
    €500 Keskimäär. tarjous
    274 tarjoukset

    Hey! I’m looking to hire an experienced developer to build a universal product-detail scraping pipeline that takes a product URL (any website) and returns a complete structured product record. This is not a “simple HTML parse.” Many target sites are React/Next/Vue, load content via XHR/GraphQL, hide details behind tabs/accordions/modals, and lazy-load images/PDFs. The solution needs to reliably extract everything a human can see on the page, plus the underlying data used to render it. What the scraper must do (high level) Given a product URL, the pipeline should: Load the page like a real user (handle cookies/overlays). Capture all content from multiple sources (DOM + network + interactions). Use GPT API strategically to increase accuracy (field mapping, vari...

    €139 Average bid
    €139 Keskimäär. tarjous
    129 tarjoukset
    Brokerage Platform Website Build
    1 päivä left
    Varmennettu

    ... • Visual & UX direction – modern, fast-loading pages with clear information hierarchy, professional typography, and a dark-on-light colour palette similar to the reference sites. • Front-end development – React, , or an equally high-performance stack that supports component reuse and effortless scaling. • Back-end foundation – secure user-auth scaffolding, database setup, and REST/GraphQL endpoints prepared for later integration with our trading engine and client portal. • Admin/CMS layer – WordPress headless, Strapi, or an alternative that lets my team update banners, promotions, and legal docs without touching code. • Compliance basics – cookie consent, KYC/AML placeholder pages, SSL configuration, and GDPR-rea...

    €6225 Average bid
    €6225 Keskimäär. tarjous
    185 tarjoukset

    ...scalable, and production-ready code Collaborate professionally with remote teams Required Skills Frontend Development React, , React Native TypeScript, JavaScript (ES6+) Redux Toolkit, React Query Tailwind CSS, HTML5, CSS3 Responsive UI design Progressive Web Apps (PWA) Backend and API Development Node.js, Java, Python, Go, C#, or .NET Core Flask, FastAPI, or Django REST APIs, GraphQL, or gRPC Microservices architecture Machine Learning and AI TensorFlow, PyTorch, Scikit-Learn, or similar frameworks Experience working with LLMs and modern AI frameworks Prompt engineering, RAG, or vector databases is a plus Cloud and DevOps AWS, Azure, or Google Cloud Platform Docker and Kubernetes CI/CD pipelines and deployment practices Data and Systems SQL or NoSQL databa...

    €1042 Average bid
    €1042 Keskimäär. tarjous
    59 tarjoukset
    API Integration for Web Application
    1 päivä left
    Varmennettu

    Description: We are looking for an experienced developer to integrate an API into our web application. The front-end is under development, and we want to connect the interfaces to back-end services via the API. Required Skills: Strong experience with REST or GraphQL API integrations Experience with [specify framework or language, e.g., React, Vue, Angular, PHP, Node.js] Good understanding of JSON exchanges and error handling Ability to collaborate with the front-end team and meet deadlines Project Details: The API is ready to be connected Collaboration will take place through weekly meetings for progress updates and adjustments Delivery deadlines will be specified during the meeting Expected Deliverables: Complete API integration with the front-end Brief documentation on the integra...

    €400 Average bid
    €400 Keskimäär. tarjous
    297 tarjoukset
    Full-Stack Wedding Portal Development
    1 päivä left
    Varmennettu

    ...vendors—each landing on dashboards tailored to their needs. Please incorporate industry-standard signup / login flows (OAuth or email-based) and role-specific permissions throughout the system. I’m open on the exact tech stack, but modern frameworks such as React (or Vue) plus Node/Express or Django on the backend, and React Native or Flutter for the mobile side, would fit the scope well. Clean REST or GraphQL APIs and a scalable database schema are expected. UI should follow current accessibility guidelines and be easily skinnable for future branding. Deliverables: 1. Fully functional web portal and mobile app builds (Android & iOS) 2. Source code in a Git repo with commit history and installation docs 3. Database schema, API documentation, and unit/integ...

    €540 Average bid
    €540 Keskimäär. tarjous
    327 tarjoukset
    Modern E-Commerce Front-End Build
    1 päivä left
    Varmennettu

    ... Key requirements • Design language: Modern, with subtle hover effects, fluid scroll animations, and context-aware modal pop-ups that enhance—not distract from—workflows. • Responsiveness: Fully optimized for desktop and mobile; tablet support is welcome but not essential right now. • API readiness: Develop against mocked data today, but structure the code so I can drop in the real REST/GraphQL endpoints the moment the UI is approved. I will supply the exact API specs at that stage. • Technology hygiene: Modular components, semantic HTML5, accessible styling (preferably using CSS-in-JS or modern utility classes), and clear documentation that lets another developer pick up the repo without guesswork. Deliverables 1. Interactive Figma (or ...

    €101 Average bid
    €101 Keskimäär. tarjous
    113 tarjoukset

    ...secure, scalable backend (micro-service or monolith—convince me). • Companion iOS and Android apps built with either native stacks or a cross-platform framework such as Flutter or React Native; the choice should balance speed, maintainability, and performance. • Robust role-based access control for Admin, User, and Guest levels, wired into the authentication layer from day one. • REST or GraphQL APIs with clear versioning, comprehensive tests, and public documentation. • CI/CD pipelines that push to a staging environment and then to production with zero downtime. • Deployment scripts and infrastructure-as-code so the entire stack can be spun up reliably in the cloud provider of our choice. Acceptance criteria 1. A live, password-protect...

    €1286 Average bid
    €1286 Keskimäär. tarjous
    74 tarjoukset

    ...Dashboard summarising daily intake versus goal, with simple colour coding for “under”, “on target”, or “over”. • Secure account storage and data sync across devices. If you prefer Flutter, React Native, or native stacks, let me know—performance and a clean UI/UX matter more to me than the specific toolkit. Please outline how you’ll structure the backend (e.g., Firebase, Supabase, or a custom REST/GraphQL API) and any third-party nutrition data sources you plan to integrate. Acceptance criteria will be: 1. A test build installable on iOS and Android that completes every flow above without crashing. 2. Source code pushed to a private repo with clear README instructions. 3. Brief hand-off call or video walkthrough summ...

    €666 Average bid
    €666 Keskimäär. tarjous
    75 tarjoukset

    I need a senior-level Flutter engineer (5 + years...animations. Regular collaboration with our designer and back-end team happens in Slack and Jira, with code reviews in Git. I release milestones every two weeks, and each sprint should close with: • A compiled iOS and Android build (TestFlight / internal track) • Source in our Git repo with clear commit history • Brief release notes and any migration steps Strong knowledge of Firebase, REST or GraphQL, and automated unit / widget testing will help you move quickly. If you have published P2P or finance-oriented apps before, please highlight them and note your role. Drop a short note outlining your relevant Flutter experience, a link to at least one live app, and your earliest start date—then we can dive ...

    €1876 Average bid
    €1876 Keskimäär. tarjous
    97 tarjoukset

    ...portal. Whether you prefer Flutter, React Native, or fully separate Swift/Kotlin codebases, the apps have to feel identical in features and design, use push notifications for booking reminders, and support Apple Pay / Google Pay alongside normal card gateways. Deliverables • Cloud-hosted admin dashboard with role-based access • iOS and Android member apps published to both stores • REST or GraphQL API connecting all front ends • Complete source code, build scripts, and basic test suite • Deployment and handover documentation Acceptance criteria 1. All member, workout, nutrition, and payment data stays in sync across devices in under five seconds. 2. A new user can register, purchase a membership, and book a class without staff interventio...

    €276 Average bid
    €276 Keskimäär. tarjous
    87 tarjoukset

    ...earnings from an in-app dashboard. A separate administrator panel will let me onboard drivers, monitor live trips, settle disputes, push notifications, and export ride analytics. Deliverables • One codebase (native Swift/Kotlin or a solid cross-platform choice such as Flutter or React Native) that compiles cleanly for iOS and Android • Secure backend with real-time sockets for tracking, REST/GraphQL API, authentication, and push notifications (FCM/APNs) • Payment-gateway integration that supports pooled fare splits • Web-based admin console covering user management, ride oversight, and reporting • Basic unit tests plus clear build & deployment instructions Acceptance criteria 1. A rider can request, track, pay for, and review a poole...

    €685 Average bid
    €685 Keskimäär. tarjous
    72 tarjoukset

    ...can authenticate users, deliver messages instantly, store chat history, and scale as the user base grows—all without the overhead of group or public room logic. I’m open to proven stacks such as Node.js with WebSocket/, Go with gRPC, or an equivalent solution that plays nicely with iOS and Android clients. End-to-end encryption, push-notification hooks (FCM / APNs), and a RESTful or GraphQL API for ancillary data are highly desirable. Deliverables • Production-ready server code with clear setup instructions • Secure user authentication and encrypted message transport • Message persistence (MongoDB, PostgreSQL, or similar) with indexing for quick retrieval • Simple admin endpoint or dashboard for basic monitoring • Post-deployment sup...

    €405 Average bid
    €405 Keskimäär. tarjous
    123 tarjoukset

    ...Hauptaufgabe ist es, Produkt- und Bestelldaten in Echtzeit über die Business Central API auszutauschen, ohne zusätzliche Zwischenplattform. Kernanforderungen • Echtzeit-Synchronisation:  – Produkte (Artikelstammdaten, Preise, Bestände)  – Bestellungen inkl. Status-Updates • Technologie: Nutzung der Business Central REST-API als zentrales Gateway; auf Shopify-Seite gern native REST-Endpunkte oder GraphQL, solange die Lösung konsistent bleibt. • Modularer Aufbau, sodass künftige Erweiterungen (z. B. Kundendaten) mit minimalem Aufwand eingebunden werden können. • Sauberes Fehler-Handling mit Logging und Retry-Logik. • Gut strukturierte Codebasis (z. B. in TypeScript, C# oder einer anderen mod...

    €2152 Average bid
    €2152 Keskimäär. tarjous
    65 tarjoukset

    ...at home inside the Shopify ecosystem to build a custom embedded app dedicated to product management. The first release will concentrate on two pain points in my current workflow: • Accurate, real-time inventory tracking across all locations • Fast, reliable creation and maintenance of product variants You’ll work with React (ideally TypeScript), Shopify App Bridge, Polaris, and the Admin GraphQL API to deliver an app that lives inside the Shopify admin, authenticates through OAuth, and feels 100 % native. Clear, maintainable code, semantic commits, and component-level testing are expected. Deliverables • A working embedded app installed on my development store • Reusable React components for inventory and variant handling • Secure OAuth...

    €16 / hr Average bid
    €16 / hr Keskimäär. tarjous
    169 tarjoukset

    ...built with the latest version of Angular from day one. The project starts with a clean slate, so you’ll have full control over the architecture, folder structure, and tooling choices. Two capabilities must be rock-solid: • User authentication – Single-sign-on, role-based access control, token refresh, and secure session handling are required. • Integration with other systems – REST and/or GraphQL endpoints, webhooks, and potential third-party SDKs will need to be wired in so data can flow smoothly across our existing platforms. Beyond those essentials, code quality, unit/integration test coverage, and straightforward CI/CD pipelines (GitHub Actions or similar) are expected. The end result should be production-ready, well-documented code that any i...

    €462 Average bid
    €462 Keskimäär. tarjous
    221 tarjoukset

    I’m racing against a tight deadline on an application that relies on GraphQL for most of its data flow, and I need an experienced developer who can jump in immediately to stabilise, extend, and optimise what is already in place. The current codebase is running on Node.js with Apollo Server, and we are consuming the API from a React-based front end, but several critical pieces are still missing or under-performing. You will be expected to audit the existing schema, patch any breaking issues, and add several new queries and mutations that tie into our data sources. Some endpoints still hit legacy REST services while others pull directly from our database layer, so a solid grasp of both GraphQL-first design and pragmatic integration work is essential. Once complete, ...

    €409 Average bid
    €409 Keskimäär. tarjous
    122 tarjoukset

    ...concept, wire-frames, and the core user journeys mapped out; now I need an experienced full-stack developer to turn this vision into a production-ready application. You’ll own the entire build: front-end, back-end, database design, third-party integrations, and cloud deployment. You should feel at home with a modern JavaScript front-end (React or Vue), a Node-based or similar back-end, REST / GraphQL APIs, and either relational or NoSQL databases. Containerised workflows, CI/CD pipelines, Git-based collaboration, and security best practices are expected parts of your toolkit. If you prefer an equivalent stack—say Django with React or Laravel with Vue—I’m open to hearing why it’s the best fit. Deliverables • A responsive, fully functional MVP...

    €91 Average bid
    €91 Keskimäär. tarjous
    39 tarjoukset

    ...orders • review a complete, filterable transaction history Behind the scenes I’ll need an admin console that lets me adjust spreads manually or, at the flip of a switch, pull live forex data from an API (feel free to recommend the most cost-effective feed). All price changes should propagate in real time to every client app. Data security is non-negotiable—please architect encrypted REST/GraphQL endpoints, token-based sessions, and role-based access for staff accounts. Source code must be clean, documented, and ready for future audits. Deliverables 1. Android and iOS apps (Kotlin/Swift or a robust cross-platform stack) pushed to the respective stores. 2. Dynamic website with the same core features and a mobile-first UI. 3. Admin backend/CMS, data...

    €393 Average bid
    €393 Keskimäär. tarjous
    36 tarjoukset

    I'm seeking an experienced backend developer for API development. Key Requirements: - Expertise in API development - Proficiency in at least one of the following: Node.js, Python (Django/Flask), Java (Spring) - Strong understanding of server-side logic and database management Ideal Skills: - Experience with RESTful, GraphQL, or SOAP APIs - Ability to design and implement efficient, scalable APIs - Knowledge of security best practices in API development - Excellent problem-solving skills and attention to detail Please provide examples of previous work and relevant experience.

    €81 Average bid
    €81 Keskimäär. tarjous
    51 tarjoukset

    ...or any other technique that proves superior—then surface the results through a lightweight web interface and an API our teams can call in real time. Key deliverables • Automated ETL jobs and data-quality checks for the three sources mentioned above • Modular training pipeline with experiment tracking, lift/ROC reporting, and feature-importance visuals • Scoring service exposed via REST (or GraphQL) endpoints plus an intuitive dashboard for non-technical users • Deployment scripts, environment setup notes, and a live hand-over session Please outline your earliest start date, high-level timeline, and anything you need from me—sample data, schema docs, cloud preferences—to begin immediately. This project is a priority, so once we agree o...

    €12964 Average bid
    €12964 Keskimäär. tarjous
    35 tarjoukset

    ...schema). The single purpose is to keep my own server in sync with whatever is on the POS in real time. Here’s what the job looks like from my side: • Goal Every sale or stock adjustment in the store should trigger, or at least very quickly reflect, a quantity update on my server so the numbers stay accurate across all of my channels. • Flow I’m picturing 1. Authenticate to the POS (REST, GraphQL, WebSocket, direct DB—whatever the platform offers). 2. Detect inventory changes continuously—ideally through a webhook or streaming endpoint; polling is acceptable if you can keep the lag minimal. 3. Transform the payload into a clean JSON object. 4. POST that JSON to a simple endpoint I’ll provide. • Deliverable : Script which...

    €238 Average bid
    €238 Keskimäär. tarjous
    23 tarjoukset

    I want to turn an existing...build for iOS and Android (native Swift/Kotlin or a solid cross-platform framework such as Flutter or React Native—feel free to propose what serves performance and future maintenance best). • Modern, intuitive UI that follows Apple Human Interface Guidelines and Material Design where appropriate. • Smooth onboarding, secure user authentication, and a lightweight backend connection (REST or GraphQL) ready for scaling. • Comprehensive QA on real devices, plus TestFlight / internal testing setup. • Final deliverables: compiled binaries, full source, build instructions, and live listings in both stores. Please outline your proposed tech stack, a rough milestone breakdown, and any similar apps you have shipped so we can move...

    €258 Average bid
    €258 Keskimäär. tarjous
    74 tarjoukset

    ...app so clients can drop the assistant into their storefront without engineering effort. Key expectations • Natural language chat powered by a modern LLM (OpenAI, Anthropic, or an equivalent open-source model) • Real-time product recommendation logic that can pull data from APIs or CSV feeds • Lead-qualification prompts with scoring that syncs to HubSpot, Salesforce, or a webhook • REST / GraphQL APIs for integration, OAuth-based authentication, and role-based access control • Usage and conversion analytics visible in the dashboard I will provide sample datasets, brand guidelines, and UI wireframes. Deliver the source code (preferably Python for the AI layer and either Node.js or Go for the platform services), database schema, container-ready dep...

    €383 Average bid
    €383 Keskimäär. tarjous
    204 tarjoukset

    Suosituimmat graphql -yhteisöartikkelit