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    1,149 nestjs proiecte găsite

    ...(React) pentru aplicații de tabletă Aplicăm în echipă de 1 full-stack + 1 frontend. Acceptăm și candidați single care se văd pe ambele roluri, dar experiența trebuie să fie solidă. Cerințe tehnice obligatorii Frontend React (ideal) Aplicații optimizate pentru tabletă (responsive + UI pentru operatori din producție) State management Form logic avansat: React Hook Form Backend Node.js (NestJS / Express) Design API REST modular, multi-aplicație PostgreSQL (ideal) Experiență obligatorie (nu doar nice-to-have) Trebuie să fi dezvoltat aplicații similare, de tip: aplicații industriale sisteme MES / MOM trasabilitate LOT & batch aplicații de producție (alimentară, FMCG sau industrială) constituie avantaj formulare operaționale complexe pentru t...

    $43 / hr Average bid
    $43 / hr Oferta medie
    55 oferte
    Crypto Alarm Flutter App
    S-a încheiat left

    Caut un dezvoltator român (sau o echipă din România) cu experiență în Flutter și backend (Node.js/NestJS sau Python/FastAPI) pentru a dezvolta o aplicație mobilă numită Crypto Alarm, disponibilă pe iOS și Android. Aplicația permite utilizatorilor să aleagă o platformă crypto, să selecteze o monedă și să seteze alarme bazate pe preț, procent sau volum de tranzacționare. Proiectul include și funcții extra precum watchlist, top gainers/losers, fear & greed index și convertor crypto. Colaborare pe termen lung, comunicare în limba română. ⸻ Funcții MVP de implementat: 1. Splash screen cu logo 2. Selectarea platformei (exchange): • Binance, KuCoin, Coinbase, Kraken 3. Selectarea monedei: • Preț live, căutare, listă bazată pe platformă ...

    $6949 Average bid
    $6949 Oferta medie
    59 oferte

    Jsme dva spoluzakladatelé a dokončujeme digitální platformu zaměřenou na online video obsah. Projekt je z velké částí hotový, ale původní vývojář ho musel opustit ještě před finální fází. Hledáme někoho, kdo převezme technickou část, pomůže dokončit poslední věci a bude s námi projekt dál rozvíjet. Jedná se o webovou aplikaci, frontend je v , backend v NestJS, databáze PostgreSQL. Hledáme někoho, kdo chce být součástí nového projektu a aktivně se podílet na jeho směřování. Projekt si financujeme sami, takže momentálně nemůžeme nabídnout fixní pl...

    $29 / hr Average bid
    $29 / hr Oferta medie
    31 oferte

    ...platform. 2. OVERVIEW OF THE RECOMMENDED TECH STACK Frontend • (React) o SEO-ready, server-side rendering, fast o Recommended hosting: Vercel Backend API Two equivalent options: 1. Python – Django + Django REST Framework 2. Node.js o SEO-ready, server-side rendering, fast o Recommended hosting: Vercel Backend API Two equivalent options: 1. Python – Django + Django REST Framework 2. Node.js – NestJS Database • PostgreSQL (relational, ideal for bookings) • Redis (caching and availability calculations) Payments • Stripe Connect (Standard or Express) o Split payments o Identity checks Payout flows Authentication • JWT tokens via backend, or • Auth0 / Supabase Auth Hosting / Cloud • Frontend: Vercel • Backend: AWS, Render o...

    $23762 - $59406
    Sigilat Acord de confidenţialitate
    $23762 - $59406
    126 oferte

    ...Customer Flow (Mobile-friendly): QR code scan → rating page (stars or emojis) Conditional redirect logic Private feedback form Thank-you page Admin Dashboard: Secure login Add/manage businesses Store Google review links Generate & download QR codes View feedback & basic analytics (scans, ratings) Technical Requirements Frontend: React / (preferred) Backend: Node.js (Express/NestJS) or Laravel Database: PostgreSQL / MySQL QR code generation (unique per business) Clean, scalable SaaS architecture Deliverables Fully working web app (MVP) Admin dashboard QR generation system Live deployment Source code + basic documentation....

    $934 Average bid
    $934 Oferta medie
    37 oferte

    Fix & Improve Existing NestJS + PostgreSQL + Redis + React Native Project Hello I’m looking for an experienced full-stack developer to help me fix, refactor, and improve my existing project built with NestJS, PostgreSQL, Redis, and React Native. The project is already developed, but it currently has bugs, unfinished logic, and stability issues. I need someone who can understand existing code, fix problems, and make the system stable and production-ready. Tech Stack: Backend: NestJS Database: PostgreSQL Caching / Queue: Redis Mobile App: React Native API: REST API Tasks: Review and analyze existing NestJS backend Fix bugs and logical issues Improve code structure and performance Fix database-related issues (PostgreSQL) Fix and optimize Red...

    $25 Average bid
    $25 Oferta medie
    24 oferte

    ...Wallet system can be reused for new business models • Pages, categories, and logic can be extended without major rewrite This flexibility is a key requirement. ⸻ SECURITY & PERFORMANCE • Secure authentication (JWT or equivalent) • Encrypted sensitive data • Rate limiting and abuse prevention • Audit logs • Scalable and maintainable codebase ⸻ TECHNOLOGY PREFERENCE • Backend: Node.js (NestJS) or Laravel • Frontend: React / • Database: PostgreSQL or MySQL • Queue/Workers: Redis or equivalent • Hosting: VPS (AWS / DigitalOcean / Hetzner) • HTTPS, backups, and deployment support ⸻ DELIVERABLES • Fully working SaaS web application • Original source code (no reused or leaked scripts) •...

    $993 Average bid
    $993 Oferta medie
    45 oferte

    Job Title: NestJS Backend Developer – High-Performance Car Bulk Import (ETL) The Challenge We are looking for a senior-level NestJS developer to build a robust, production-ready car data import engine for our vehicle marketplace. This isn't a simple "upload and save" task; we require a sophisticated streaming pipeline capable of processing massive datasets (CSV, XML, JSON) with minimal memory footprint and high reliability. Core Task Build a POST /imports/cars endpoint that: Automatic Format Detection: Handles multipart/form-data and identifies the file type (CSV, XML, or JSON) programmatically. Stream-Based Processing: Processes data using Node.js Streams / AsyncIterables. The application should never load the full file into RAM. Data Pipeline: Imple...

    $153 Average bid
    $153 Oferta medie
    53 oferte

    ...developers to build out new features, optimize performance, and scale our vehicle marketplace platform. We need someone who is comfortable jumping into a mature codebase, collaborating via Git, and contributing to a high-quality TypeScript environment. Technical Stack Frontend: (React), TypeScript. Styling: Tailwind CSS & Bootstrap (handling a hybrid UI environment). Backend: Node.js / NestJS. Database: MongoDB. Tools: Git/GitHub, Vercel, and experience with AI-assisted coding (Cursor, Lovable, etc.) is a major plus. Key Responsibilities Feature Development: Collaborate with the team to ship new frontend components and backend endpoints. Data Handling: Assist in building and maintaining complex features like bulk data importers (CSV/XML/JSON) and advanced search filt...

    $7 / hr Average bid
    $7 / hr Oferta medie
    102 oferte

    ...document defines the final scope for building a modern prop trading platform inspired by FTMO, FundedNext, The5ers, and FXIFY. The platform supports real-time trading data, automated rule enforcement, secure payments, KYC verification, and community engagement. 2. Technology Stack Layer Frontend Technology 14+, TypeScript, Tailwind, shadcn/ui Backend Database Node.js (Express/NestJS), TypeScript MongoDB, PostgreSQL Authentication JWT, , OAuth Real-Time Payments CMS Hosting MetaApi, Crypto, Bank API, Stripe Payload CMS / Sanity Vercel, Render, Railway 3. Core Platform Features 3.1 User Dashboard ● Live MetaApi trading data ● Balance, Equity, Drawdown ● Profit Target Tracking ● Trade History (Charts + Tables) ● Monthly P&L Calendar ● Account

    $303 Average bid
    $303 Oferta medie
    26 oferte

    ...Webhooks for payment status ──────────────────────────────────────── 11. SECURITY & COMPLIANCE ──────────────────────────────────────── • Role-based access control • Company-level data isolation • Encrypted sensitive data • Payment PCI compliance • Full audit logs ──────────────────────────────────────── 12. RECOMMENDED TECH STACK ──────────────────────────────────────── ### Backend • Node.js (NestJS) OR Laravel • REST + WebSockets • PostgreSQL • Redis ### Fleet Core • Fleetbase (extended via plugins) ### Frontend (Web Dashboards) • React.js or • Tailwind CSS • Mapbox or OpenStreetMap ### Mobile Apps • Flutter (preferred) OR React Native ### AI & Analytics • Python • FastAPI • Pa...

    $514 Average bid
    $514 Oferta medie
    93 oferte

    ...texto ou JSON estruturado, controle de custos e logs detalhados. 8. Painel de Controle Painel administrativo com métricas de uso, status das integrações, consumo de IA e logs. Painel simplificado para clientes (opcional no MVP). 9. Requisitos Técnicos Arquitetura baseada em APIs, processamento assíncrono, banco de dados relacional, logs e rastreabilidade. Stack sugerida: React/, Node.js (NestJS) ou Python (FastAPI), PostgreSQL, Redis, Docker e Cloud. 10. Modelo Operacional O administrador gerencia todos os fluxos. O sistema deve permitir definição de limites por cliente e ações automáticas em caso de excedente. 11. Entregáveis Código-fonte completo em repositório do cliente, documenta&ccedi...

    $740 Average bid
    $740 Oferta medie
    34 oferte
    Android TV IPTV Xtream App
    S-a încheiat left

    ...integrated) Room DB for favorites / watch history WorkManager for automatic updates Glide/Coil for posters TV-optimized navigation (D-Pad focus handling) B) Backend / Admin Panel Your control center: Device management Manage MAC IDs Upload background images Push messages to devices Filter categories (languages) Control player settings Technical stack: Backend API (e.g.) Node.js + NestJS or Laravel or Django Database PostgreSQL or MySQL Web Admin Panel React / Vue or Laravel Blade Push system Firebase Cloud Messaging (FCM) C) Remote Setup (Quick Code / QR) For your “Portal Quick Code” feature: TV displays a code → user enters it on phone/web → server configures the box Requires: Auth tokens Web form Device ID mapping This ...

    $2180 Average bid
    $2180 Oferta medie
    137 oferte

    ...vehicle data. - SEO-Optimized Blog: Ready for content marketing and organic traffic growth. - Admin Control Panel: Total management of listings, payments, notifications, and site content. Preferred Tech Stack (Open to Suggestions): We’re aiming for speed, security, and scalability — your stack should reflect that. Ideal direction may include: - Frontend: / React / Vue - Backend: Node.js / NestJS / Laravel / Django - Database: PostgreSQL / MySQL with smart indexing - Hosting: AWS / Vercel / DigitalOcean (scalable infrastructure) - Core Principles: Clean code, modular architecture, and performance-first design Deliverables: - Fully functional web platform (frontend + backend) - Sleek, responsive UI across all devices - Admin tools for full control - Secure authentica...

    $5429 Average bid
    $5429 Oferta medie
    205 oferte

    My React front-end for a simple two-role LMS (admin / student) is ready ; what I still need is a production-ready backend so I can finally push the site live. Stack & expectations • Node.js with NestJS — structured, testable REST API only • PostgreSQL accessed through Prisma ORM • JWT authentication and role-based access

    $69 Average bid
    $69 Oferta medie
    6 oferte

    ...Customer database Loyalty system manager Order management Hours/holidays selector Delivery settings Reporting Marketing tools (email + SMS blasts) 10. Mobile App (Phase 2) A simple app using the same API/backend: React Native preferred SMS login Menu + ordering Loyalty wallet Order tracking Push notifications (future) Technical Preferences Frontend: or React Backend: Node.js (NestJS or Express) or Laravel Database: PostgreSQL preferred Payments: Stripe SMS: Twilio Delivery: DoorDash Drive / Uber Direct Hosting: Vercel + AWS or DigitalOcean Clean, scalable architecture required What to Include in Your Proposal ONLY APPLY IF YOU HAVE EXPERIENCE WITH AT LEAST ONE OF THESE: POS integrations Ordering systems Loyalty systems Complex backend architectures ...

    $7863 Average bid
    $7863 Oferta medie
    217 oferte

    ...Calendar availability sync (Google and Outlook) * Change detection and conflict warnings (dates, scope, pricing) * E-signature flow with version history * Automated payments (Stripe-first) * Email and notification system --- ### Technical Stack (Flexible but Opinionated) **Frontend** * React or * Mobile-first, clean UX * Chat and agreement side-by-side views **Backend** * Node.js (NestJS or Express) * REST and event-driven architecture * Agreement and payment orchestration services **AI Layer** * LLM-based extraction and structuring * Change detection and clause diffing * Assumption tracking and auditability **Integrations** * Google and Outlook Calendar * Stripe (payments and invoicing) * DocuSign or native e-signature * Email (Gmail and Outlook) --- ### Who We Are ...

    $1012 Average bid
    $1012 Oferta medie
    164 oferte

    ...espacio de interacción con la comunidad. El sistema de monedas/créditos permitirá a los usuarios adquirir capítulos según configuraciones que definiré durante el desarrollo. El panel de administración debe facilitar la subida de capítulos, la gestión de usuarios y el control de las transacciones. Stack técnico Frontend en React o , backend en Node.js (me inclino por Express, aunque acepto NestJS si resulta más eficiente). La base de datos puede ser MySQL o PostgreSQL; elegiré la opción que mejor encaje con tu propuesta de arquitectura. La interfaz tiene que ser responsive, optimizada para dispositivos móviles. Entregables esenciales • Frontend Webtoon con scroll vertical ...

    $101205 Average bid
    $101205 Oferta medie
    59 oferte

    ...rates, admin approval & Ranking) * Our Field Staff participate in the same app one app (Accompanying with patients ) all in one app (IOS and Android ) with task checklists (pickup, hospital visits, discharge, Tours , check in and Check out of hotels , lodges , travelling by cars arrangements etc.) Tech Stack (preferred) * Frontend: React (Web), React Native (Mobile) * Backend: FastAPI (Python) or NestJS (Node.js) * Database: PostgreSQL + Redis * Infra: AWS/Azure/GCP, Dockerized, CI/CD ready * Security: HIPAA-grade, Indian IT Act compliance, encrypted storage, audit logs ( Capture Time stamp,DD/MM/YY with time , Who has modified,or changed) Delivery Expectations * Cloud-native monolithic basic MVP (future-ready for microservices on iteration ) * Documentation (API specs, ar...

    $599 Average bid
    $599 Oferta medie
    169 oferte

    ...Payout preparation & SEPA export Generate payout proposals from posted credit notes (idempotent, no duplicates) Validate bank data (IBAN) + business rules Create SEPA pain.001 XML export batches for bank portal upload Track export history + statuses (exported/paid), with an MVP “mark as paid” workflow Design for future reconciliation (optional) Tech Stack Node.js + TypeScript Backend: Express / NestJS / API routes (existing system) Validation: Zod (or similar) Queue/Jobs: BullMQ/Redis (or similar) Cron/Scheduler DB: existing (Prisma) SEPA XML generation (pain.001) Requirements Strong experience with Node.js/TypeScript in production systems Comfortable working in legacy/historically grown codebases Solid understanding of: API security & validation backgrou...

    $20 / hr Average bid
    $20 / hr Oferta medie
    108 oferte

    ...Payout preparation & SEPA export Generate payout proposals from posted credit notes (idempotent, no duplicates) Validate bank data (IBAN) + business rules Create SEPA pain.001 XML export batches for bank portal upload Track export history + statuses (exported/paid), with an MVP “mark as paid” workflow Design for future reconciliation (optional) Tech Stack Node.js + TypeScript Backend: Express / NestJS / API routes (existing system) Validation: Zod (or similar) Queue/Jobs: BullMQ/Redis (or similar) Cron/Scheduler DB: existing (Prisma) SEPA XML generation (pain.001) Requirements Strong experience with Node.js/TypeScript in production systems Comfortable working in legacy/historically grown codebases Solid understanding of: API security & validation backgrou...

    $466 Average bid
    $466 Oferta medie
    133 oferte

    Project Context: We are an EdTech/Streaming platform with a solid backend built in NestJS (Microservices). The code was recently audited and rated 8/10 in quality. However, we are facing critical issues with the production environment, video processing speed, and the user interface. The Mission (Fixed Price Contract): We are looking for a Senior Expert to take over, clean the server mess, optimize video processing, and launch a new UI. Scope of Work (5 Key Pillars): 1. Server Rescue & Data Safety (CRITICAL PRIORITY): Access the live server (SSH) and clean up the chaotic Docker/Nginx configurations left by the previous dev. Map Existing Data: We have 60TB of HLS video data on the server. You must map this volume correctly to the new Docker containers so the platform works wi...

    $2112 Average bid
    $2112 Oferta medie
    173 oferte
    Payload CMS Expert
    S-a încheiat left

    We are looking for a developer who has expertise in Payload CMS and can customize it as per our need. We already have NextJs Admin Panel and NestJs Backend APIs and Database in PostgreSQL. We would like to use Payload CMS with in our existing Admin only for Content Management of Multiple sites we have and content translations and Media. We would like to configure the payload CRM to see how it will fit with our existing Admin Panel , using shared DB. ONLY SERIOUSE and Payload CMS Experts APPLY.

    $144 Average bid
    $144 Oferta medie
    147 oferte

    ...Payout preparation & SEPA export Generate payout proposals from posted credit notes (idempotent, no duplicates) Validate bank data (IBAN) + business rules Create SEPA pain.001 XML export batches for bank portal upload Track export history + statuses (exported/paid), with an MVP “mark as paid” workflow Design for future reconciliation (optional) Tech Stack Node.js + TypeScript Backend: Express / NestJS / API routes (existing system) Validation: Zod (or similar) Queue/Jobs: BullMQ/Redis (or similar) Cron/Scheduler DB: existing (Prisma) SEPA XML generation (pain.001) Requirements Strong experience with Node.js/TypeScript in production systems Comfortable working in legacy/historically grown codebases Solid understanding of: API security & validation backgrou...

    $626 Average bid
    $626 Oferta medie
    194 oferte

    ...website with an admin panel, and we’re looking for an experienced Full-Stack TypeScript Developer to complete a set of clearly defined tasks within 1 day. This is not a long-term project — it’s a time-boxed task with specific deliverables and deadlines. Tech Stack The developer must be comfortable working across the full stack: Frontend: React or (TypeScript + SCSS) Backend: Node.js with NestJS Admin Panel: JavaScript Database: PostgreSQL (via Prisma ORM) Auth & APIs: JWT, OAuth, third-party APIs Cache & Storage: Redis, Cloudflare R2 (or S3-compatible storage) DevOps (basic): Docker, deployment, CI/CD (YAML configs) Tasks & Timeline All tasks are fully documented here: Task Details (Google Sheet):

    $35 Average bid
    $35 Oferta medie
    60 oferte

    ...Causes, Impact Stats, Latest News) About Us / Mission / Vision pages Programs & Causes listing with detail pages Donation pages with payment integration News & Updates (Blog) Events pages Volunteer application form Contact page Image & Media Gallery Multi-language support (English + Urdu) SEO optimization (meta tags, schema, sitemap) --- Backend Requirements Technology Stack Node.js NestJS or PostgreSQL database Prisma ORM RESTful APIs Backend Features Custom CMS (Pages, Posts, Programs, Events) Donation management system Volunteer management Media uploads (Cloud storage) Role-based authentication (Admin roles) Email notifications Secure API architecture --- Authentication & Admin Panel Admin Panel Features Secure login with rol...

    $561 Average bid
    $561 Oferta medie
    98 oferte

    ...classification Action / constraint management Role-based dashboards Weekly exports (PDF / CSV) Audit logging Important constraints The system must NOT directly edit project schedules Input is via weekly PDF uploads only Logic is time-based, not priority-based This is a control system, not a scheduler Tech Stack (Open to suggestion) Frontend: React (preferred) Backend: Python (FastAPI) or Node (NestJS) Database: PostgreSQL File storage: cloud object storage Deployment: Docker-based What to Include in Your Proposal Please include: Recommended tech stack Estimated timeline (weeks) Estimated cost Team size / role breakdown Relevant experience (especially workflow, document-based, or planning systems) Nice to Have Experience with PDF parsing Experience with const...

    $3016 Average bid
    $3016 Oferta medie
    346 oferte

    ...details beyond what admin allows 4️⃣ Lead Management (Admin) Admin dashboard should allow: Create leads manually View all leads Assign leads to vendors Change lead status (New, Assigned, In Progress, Closed) View vendor profiles Tech Stack Preferences (Open to Suggestions) Preferred stack (but flexible if justified): Frontend: React / / plain HTML + JS Backend: Node.js / Express / NestJS Database: PostgreSQL / MySQL Auth: Custom or Supabase/Firebase Auth Hosting: Cloud-ready (Vercel, VPS, etc.) The system should be: Modular Scalable Easy to maintain What I Already Have Live Wix website (marketing site) Clear product flow Defined onboarding logic Pilot city: Jaipur (India) Deliverables Working codebase Vendor onboarding flow Vendor & admin dashboard...

    $146 Average bid
    $146 Oferta medie
    63 oferte

    Necesito un desarrollador sénior que hable español y domine la arquitectura compuesta por Laravel, , NestJS y Flutter para tomar la batuta de las próximas mejoras de mi plataforma. Objetivo principal El sistema ya esta funcionando perfecto y solo hay que agregar puntos adicionales que se explicara con un video. Qué espero de tu perfil • Experiencia comprobable, al menos moderada, en los cuatro frameworks mencionados. • Capacidad para analizar el estado actual del proyecto, proponer un plan de trabajo y ejecutarlo con autonomía. • Disponibilidad inmediata o, como máximo, dentro de la fecha que me indiques con exactitud. • Disposición para firmar un contrato de confidencialidad y de prestación de servicios ...

    $454 Average bid
    $454 Oferta medie
    78 oferte

    ...The project is an MVP, with a clearly defined scope and architecture. Core Use Case Daily tracking of automotive reconditioning work VIN-based workflow Jobs / Repair Orders (RO) Before / After photo documentation Technician activity tracking Historical records per vehicle Technical Requirements (Mandatory) Please apply only if you are comfortable with the following: Backend: Node.js (Express / NestJS / Fastify) Frontend: React / Database: SQL (MySQL or PostgreSQL) Infrastructure: Deployed on our VPS Backend + DB under our control No Firebase No managed backend services Architecture: Separate backend and frontend Environment variables (.env) Clean project structure GitHub repository owned by us Docker is acceptable but not required. Functional Scope (MVP) User authentication (Adm...

    $580 Average bid
    $580 Oferta medie
    313 oferte

    ...Ensure scalability, security, and performance. - Establish development, testing, and documentation best practices. - Technically coordinate with QA, design, and product. Requirements - Degree in Computer Science, Software Engineering, or related field. - Proven experience designing scalable, complex full-stack architectures. - Strong knowledge of modern stacks (e.g., React + TypeScript, Node.js/NestJS, PostgreSQL or similar). - Experience with API design, authentication, role-based access, and complex state management. - Practical AI integration experience (OCR, LLM APIs, intelligent automation, chatbots). - Experience with offline-first applications and data synchronization. - Strong technical decision-making and leadership skills. - Product-minded, quality-focused, and proble...

    $21 / hr Average bid
    $21 / hr Oferta medie
    126 oferte

    ...Situation: I purchased a custom software solution (approx $4k investment) built with a modern stack. I have been told by a third party that the code is "bad quality" and that "the database is just a copy of WordPress". I need to verify if this is true or false. The Tech Stack (Based on the Repo): Architecture: Microservices (API, Media API, Video Processing Worker, Storage Server). Backend: NestJS (TypeScript), TypeORM. Frontend: , React, Tailwind CSS. Database: PostgreSQL. DevOps: Docker, Docker Compose, PM2. Your Task: I will provide you access to the GitHub repository. You need to: Review the Code Structure: deeply analyze the back and front folders. Analyze the Database Schema: Verify if the database is properly designed using TypeORM entities or ...

    $171 Average bid
    $171 Oferta medie
    136 oferte

    ...modules developed in Python FastAPI Refine subscription, payment, and webhook flows using Stripe Manage database migrations (PostgreSQL + Prisma) Integrate media uploads and storage using AWS S3 Optimize performance, SEO, and Core Web Vitals Prepare the system for production and scalability Tech Stack Frontend: 15+, TypeScript, Tailwind CSS 4, shadcn/ui Backend: Node.js, NestJS, Python FastAPI (AI modules) Database: PostgreSQL with Prisma ORM Payments: Stripe (subscriptions, webhooks, customer portal) Infrastructure: AWS S3, Resend, , Vercel Mandatory Process Rules (Non-Negotiable) Daily GitHub commits, small, clear, and atomic Large or bulk code submissions will be rejected Massive commits are considered a quality-control and anti-fraud viol...

    $500 - $1000
    Sigilat Acord de confidenţialitate
    $500 - $1000
    462 oferte

    ...assumption, meaning no repository or component access before acceptance. If post-acceptance access is provided to the existing FlutterBridge, DualCam, and overlay UI components, the delivery time can be compressed accordingly. We are fully aligned with the acceptance criteria and non negotiables you outlined, including offline reliability, kill resume safety, versioned timelines, cheap mode gate, NestJS as source of truth, Redis based appeals workflow, and end to end demo proof per milestone. Our delivery will strictly follow the milestone structure M0 through M3, with Phase 0 Cheap Mode Gate used to validate the full state machine and reliability paths before any gold provider wiring. No open questions from our side at this point. Once you confirm whether this proceeds as Gre...

    $1000 Average bid
    $1000 Oferta medie
    1 oferte

    Task Doc: Guarantee Overlay (Flutter/Native + NestJS)

    $800 Average bid
    $800 Oferta medie
    1 oferte

    ...releases User tools: search users, manage bans, manually add coins/subscriptions Payment oversight: view transaction logs, handle refunds/manuals, monitor webhook status Notification sender for broadcasts Basic reports and analytics Recommended Technical Stack Mobile: Flutter (state management: Riverpod or Bloc) Backend: Firebase suite (Auth, Firestore, Storage, Functions, FCM) or custom (Node.js/NestJS + database like PostgreSQL/MongoDB) Payments: Custom implementation with webhook endpoints for verification (integrate merchant APIs as chosen later) Offline handling: dio + flutter_downloader + local DB (Isar/Hive) for chapters/metadata Reader: custom vertical scrolling widget or extended_image/photo_view packages Admin panel: Flutter Web (shared code) or dedicated framework...

    $923 Average bid
    $923 Oferta medie
    244 oferte

    ...group chats (WhatsApp/Telegram style). Trending Dashboard: Real-time metrics showing trending Topics, Subjects, Influencers, and News. 4. Technical Requirements Architecture: The app will reside on a subdomain (e.g., ) with seamless authentication/session sharing from the main platform. Tech Stack: We are open to suggestions but prefer React/ for the frontend and Node.js/NestJS with WebSockets () for real-time functionality. Media Support: Robust handling of video, audio, and image uploads. Role & Responsibilities Design and develop the scalable web application from scratch. Implement real-time features with low latency. Ensure the UI is mobile-responsive and highly intuitive. Handle database architecture (SQL or NoSQL) to manage large volumes of messages

    $497 Average bid
    $497 Oferta medie
    34 oferte

    We’re a Gurgaon-based startup building a conversational-first AI product (not a ChatGPT wrapper). We’re looking for two experienced freelancers to help us build an MVP. - Role 1: Backend / AI Engineer (Freelance) Commitment: 25–30 hrs/week Required Skills Python (FastAPI) Node.js (Express / NestJS) PostgreSQL Neo4j or strong graph concepts LLM API integration (OpenAI / Azure / Claude) REST APIs, Docker Responsibilities Build backend services & APIs Implement AI-driven logic Work with graph-based relationships Integrate LLMs cleanly Weekly progress demos - Role 2: Frontend / React Native Engineer (Freelance) Commitment: 15–20 hrs/week Required Skills React Native TypeScript API integration Chat / conversational UI experience Mobile U...

    $10 / hr Average bid
    $10 / hr Oferta medie
    30 oferte

    ...order confirmation. Users: Registration/login (JWT or similar), profile management (addresses, order history), optional guest checkout. Admin: CRUD for products and categories, inventory updates, order management (status changes), optional coupon/discount management. Payments: Stripe/PayPal/Razorpay integration for secure checkout and order validation. Tech Stack: Node.js backend (Express or NestJS), frontend with React or for fast UX and SEO benefits, database using MongoDB/MySQL/PostgreSQL, storage for product images (local or S3-style bucket). Performance: Optimized loading, caching, compressed images, SEO metadata, and structured URLs. Analytics: GA4 and purchase event tracking, optional Facebook Pixel. Deliverables: Fully functional e-commerce site, deployed to cloud...

    $120 Average bid
    $120 Oferta medie
    87 oferte

    ...For high-throughput market data ingestion. Redis (Port 6379): For real-time "hot" data storage (latest prices). ClickHouse (Port 8123): For "warm" data storage (historical OHLC data for charts). MinIO (Port 9002): S3-compatible object storage for "cold" data archival (raw ticks). Elasticsearch & Kibana: For system observability and logs. 2. Kafka Producer Service Created KafkaProducerService in NestJS. Configured to connect to the local Kafka broker. Ready to publish messages to topics. In Progress / Next Steps 1. Ingestion Layer (Binance Integration) Goal: Stream live market data from Binance instead of using simulated data. Implement Binance WebSocket: Connect to Binance's btcusdt@trade stream. Publish to Kafka: Forward incoming trad...

    $175 Average bid
    $175 Oferta medie
    9 oferte
    Flutter/Native + NestJS
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    Task Doc: Guarantee Overlay (Flutter/Native + NestJS)

    $600 Average bid
    $600 Oferta medie
    1 oferte

    ...Implement simple UI features using JavaScript, HTML, CSS • Fix frontend bugs and adjust layouts • Integrate frontend with backend APIs ⸻ Required Skills Must have • Good working knowledge of Node.js • Understanding of server-side development concepts • Basic experience with databases • JavaScript fundamentals • Basic HTML & CSS • Git basics Nice to have (not required) • / NestJS • Authentication (JWT, sessions) • Docker basics • Prior SaaS or API experience ⸻ Compensation • €300 per month • Full-time, remote • Fixed monthly payment • 12-month contract Please apply only if you are comfortable with this budget. There is no salary negotiation at this time. ⸻ Location...

    $571 Average bid
    $571 Oferta medie
    220 oferte

    ...Calendar availability sync (Google and Outlook) * Change detection and conflict warnings (dates, scope, pricing) * E-signature flow with version history * Automated payments (Stripe-first) * Email and notification system --- ### Technical Stack (Flexible but Opinionated) **Frontend** * React or * Mobile-first, clean UX * Chat and agreement side-by-side views **Backend** * Node.js (NestJS or Express) * REST and event-driven architecture * Agreement and payment orchestration services **AI Layer** * LLM-based extraction and structuring * Change detection and clause diffing * Assumption tracking and auditability **Integrations** * Google and Outlook Calendar * Stripe (payments and invoicing) * DocuSign or native e-signature * Email (Gmail and Outlook) --- ### Who We Are ...

    $518 Average bid
    $518 Oferta medie
    194 oferte
    AI-Enhanced Web App Build
    S-a încheiat left

    We are building a production-grade web application with an integrated AI component. We are looking for a Senior Full-Stack ...integrated AI component. We are looking for a Senior Full-Stack Developer who can: 1. Build secure backend APIs 2. Develop frontend including dashboards 3. Integrate AI (OpenAI / Azure OpenAI) as a backend service 4. Ensure security, logging, and cost control This is not a chatbot-only project. AI will be used as an assistive service inside the platform. Backend: Python (FastAPI / Django) or Node.js (NestJS / Express) Frontend: React / / Vue Databases: PostgreSQL / MySQL Authentication: JWT / OAuth / Role-based access API design: REST (GraphQL optional) Please share: - Similar projects - GitHub or portfolio - We can discuss the detailed product in the c...

    $2194 Average bid
    $2194 Oferta medie
    321 oferte

    ...(Non-Training Based) We do not expect the model itself to retrain automatically. Instead, the system must: • Store AI draft vs final approved reply • Track edit level (none / light / heavy) • Allow prompt improvements and example-based learning • Support prompt versioning and comparison ⸻ Technical Expectations Preferred Stack (open to discussion) • Backend: Python (FastAPI) or Node.js (NestJS) • Database: PostgreSQL • Background jobs: Celery / BullMQ / equivalent • Frontend: React (admin dashboard) • AI: OpenAI API or Azure OpenAI • Hosting: Dockerised, cloud-ready Non-functional Requirements • Clean architecture • Clear separation of concerns • Good error handling and logging • Secure hand...

    $615 Average bid
    $615 Oferta medie
    102 oferte

    My NestJS / TypeScript music-streaming platform is entering public beta and I want every release to ship rock-solid. The job combines deep Quality Assurance with hands-on IT support: Quality scope I need structured test coverage for the entire user journey on the frontend, systematic verification of every REST and GraphQL endpoint on the backend, realistic load and soak tests that simulate thousands of simultaneous streams, plus a full security sweep following OWASP guidance. IT support scope Once issues surface you will also close the loop—triage user tickets, keep production servers healthy, and manage zero-downtime deployments and hot-fix patches. The stack runs on Docker-ised micro-services in AWS, delivered through a GitHub Actions pipeline; feel free to propose improve...

    $4878 Average bid
    $4878 Oferta medie
    94 oferte

    ...generate social media posts, ad copies, and marketing campaign content using Jasper AI, based on their active subscription plan. Our backend is built with NestJS and MongoDB. Subscription management is already implemented. We are looking for a developer who has prior hands-on experience integrating Jasper AI or similar AI content SaaS platforms. TECH STACK Backend: NestJS (Node.js) Database: MongoDB Authentication: Existing user authentication system Subscriptions: Already implemented (plan-based access) Frontend: Already developed (API integration only) SCOPE OF WORK 1. Jasper AI Integration - Integrate Jasper AI APIs with NestJS backend - Secure API key and environment configuration - Handle API errors, limits, and retries properly 2. Marketing Content Gener...

    $1166 Average bid
    $1166 Oferta medie
    22 oferte

    Task Doc: Guarantee Overlay (Flutter/Native + NestJS) Resources available for this project (post-acceptance access only) DeepLink FlutterBridge, DualCam, and parts of the overlay UI (these components follow our quality-standards - the project incumbent will also follow these standards). Skilled dev estimate: ~4 days to adapt these components to your project work. Otherwise, quote Greenfield (no repo access pre-acceptance). Acceptance (Non-Negotiable) 1) Mobile Overlay (Flutter/Native) Overlay activates 60 min pre-event (or distance/ETA-adjusted), and drives required evidence steps. Evidence capture: Selfie (front camera) Outfit photo (full body) Video/context video (front camera)

    $591 Average bid
    $591 Oferta medie
    125 oferte

    ...Developer must be familiar with PHI handling in telemedicine/healthcare contexts and willing to sign a Business Associate Agreement (BAA) if PHI is processed. Secure customer accounts (order history, tracking) Responsive, SEO-friendly customer flows (product pages, cart, checkout) Admin dashboard for inventory, orders, finance, and compliance reporting Preferred Tech Stack: Backend: Node.js (Express/NestJS), Laravel (PHP), or Django (Python) — recommend based on HIPAA best practices (e.g., strong security features, good ecosystem for encryption/logging) Database: PostgreSQL or MySQL (with encryption) Other: REST/GraphQL API, JWT/OAuth auth, proper error handling/logging Deliverables: Fully integrated, HIPAA-compliant backend + API for Framer Admin dashboard (simple, secur...

    $2131 Average bid
    $2131 Oferta medie
    142 oferte