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    1,347 rabbitmq missions trouvées

    L' objectifs du mandat : Terminer l'intégration avec RabbitMQ des API de la plateforme Courriel Génération des statistiques Paiement en ligne avec Globale Paiement CRUD sur les formulaires dynamiques doit connaitre : c# .Net 8 SQL serveur 2022 Entity Framework API Rest Html Javascript Bootstrap JQuery Azure DevOP (gestionnaire de source) Test unitaire RabbitMQ WebSocket Intégration d'API REST Connaissance fichier .csv intégration avec OneDrive et Office 365 Twillio Sendgrid connaissance avec intégration SSO Microsoft Google Autre capacité de travailler dans du code .Net Framework 4.8 Un plus technique (non obligatoire) Pipeline Devop App mobile (android et ios)

    €4 / hr Average bid
    €4 / hr Offre moyenne
    12 offres
    Développeur BackEnd
    S'est terminé left

    Nous sommes une société privée en contrat avec le Ministère de l'agriculture, de l'agroalimentaire et de la forêt. Un très beau projet nous amèn...projet nous amène à renforcer notre équipe de développement sur une période de 6 mois pour la refonte totale de notre ERP. Dans ce cadre, nous recherchons un développeur Freelance Backend. Compétences attendues : - Expert en PHP - Expertise sur Zend Expressive, Zend Framework ou Laravel - Expérience DevOps - Curiosité métier, autonomie Stack : PHP 7, Zend Expressive, Swoole, Codeception, GIT, RabbitMQ, Beanstalkd, Docker, ELK, PostgresSQL, AS400, VueJS, Vuetify, Stylus Vous rejoindrez une équipe d&rsq...

    €33 / hr Average bid
    €33 / hr Offre moyenne
    11 offres
    Java Developer
    S'est terminé left

    ...finalité est d’augmenter la satisfaction business sur l’utilisation des outils IT Le profil · Vous êtes titulaire d’un diplôme de Bachelier ou de Master en Sciences Informatiques · La technologie Java n’a pas de secret pour vous · Vous justifiez d’une expérience avec un outil d’intégration de type ESB – EAI · Les technologies open source telles que Apache Karaf, RabbitMQ, Apache ActiveMQ et Kibana vous sont familières · La connaissance de Angular et de SAP est un plus · Vous maitrisez le français tant à l’oral qu’à l’écrit · Vous êtes pol...

    €32 / hr Average bid
    €32 / hr Offre moyenne
    16 offres

    Nous avons une web app développée en django sur une base mysql avec du solr, celery, rabbitmq, angular. Nous recherchons une personne pouvant l'installer chez notre client parisien, sur son serveur, sans connexion extérieure à internet. Si cela est dans vos cordes, contactez moi

    €21 / hr Average bid
    €21 / hr Offre moyenne
    8 offres

    Nous avons une web app développée en django sur une base mysql avec du solr, celery, rabbitmq, angular. Nous recherchons une personne pouvant l'installer chez notre client parisien, sur son serveur, sans connexion extérieure à internet. Si cela est dans vos cordes, contactez moi

    €16 / hr Average bid
    €16 / hr Offre moyenne
    1 offres

    ...ios et un dev android pour travailler en équipe et répondre aux besoins de chacun. Les technologies utilisées sur le projet et que vous devez maitrisés sont ( pour la première mission et pour les prochaines ) Symfony 2 Javascript Framework javascript MVC (BackboneJS/ChaplinJS) jQuery Sémantique html5 SASS pour le css Coffeescript gestion des cookies sur notre serveur : rabbitmq php55 extensions : cli, intl, mcrypt, curl, pspell, cgi, gd, imagick, readline pecl: pecl_http, mongo, APC, intl nodejs git mongodb redis elastic search Vous etes disponible pour nous rencontrer sur paris ,( pas de société/pas de contact à l'étranger merci ), envoyez nous un message avec vo...

    €30 / hr Average bid
    €30 / hr Offre moyenne
    1 offres

    ...reports) AI defect extraction Structured data normalization Repair cost estimation logic Long-running job orchestration Background workers / queues Multi-user concurrency Production deployment architecture NOTE: Required Technical Stack (Non-Negotiable) You must have experience with: Node.js or Python backend (FastAPI / Express / NestJS) Background job queues (BullMQ / Celery / Redis / RabbitMQ) PostgreSQL Object storage (S3 or equivalent) Production deployment (AWS / DigitalOcean / similar) API architecture design Handling long-running async workflows Bonus: Experience with AI APIs (OpenAI / Anthropic) Experience with document parsing Cost optimisation for AI workloads NOTE: The Core Challenge We process building inspection PDFs (50–70+ defects per ...

    €2380 Average bid
    €2380 Offre moyenne
    233 offres

    We need a full-stack technical staff member with expertise in Java microservice development (Spring Cloud), message queues (Kafka/RabbitMQ), databases and caching (MySQL/Redis), Linux server deployment and maintenance, Nginx gateway configuration, and distributed system debugging to complete the deployment.

    €53 Average bid
    €53 Offre moyenne
    17 offres
    Source code deployment
    S'est terminé left

    Requires Linux server operation and maintenance capabilities (system operation, permissions, service management, Shell scripting); server environment deployment capabilities (Nginx/Apache/Web service configuration); database management capabilities (MySQL installation, import, and recovery); system backup and recovery techniques ( decompression, directory migration, dependency repair); RabbitMQ message queue deployment capabilities; server network configuration (ports, firewall, service connectivity).

    €56 Average bid
    €56 Offre moyenne
    19 offres

    ...y reglas claras). Transacciones financieras Facturas, cobros/pagos y asientos. Prioridad: evitar duplicidades, garantizar idempotencia y conciliación. Requisitos técnicos Dominio de API/ORM de Odoo y experiencia con integraciones Odoo (XML-RPC, JSON-RPC, REST). Experiencia integrando con Oracle (API/servicios o acceso controlado a BD) y diseño de middleware. Manejo de colas/mensajería (RabbitMQ, Kafka o equivalente), webhooks, reintentos e idempotencia. Seguridad: autenticación, cifrado/secret management, permisos mínimos, auditoría y logs. Documentación: diagramas de flujo, mapping de datos, puntos de sincronización y guía de despliegue. Entregables Servicio/módulo de integración funci...

    €972 Average bid
    €972 Offre moyenne
    51 offres

    ...Session timeout * API request signing * Audit logs --- ## 17. Logs & Monitoring * Recharge logs * API request/response logs * Callback logs * Wallet logs --- ## 18. Notifications System * SMS alerts * Email alerts * WhatsApp alerts (optional) * Webhook callbacks --- ## 19. Technology Stack (Suggested) * Backend: Node.js / PHP / Python * Database: MySQL / PostgreSQL * Cache: Redis * Queue: RabbitMQ / Bull * Frontend: React / Vue / Blade --- ## 20. Scalability & Performance * Load balancing * Horizontal scaling * API rate limiting * Retry & timeout handling --- ## 21. Compliance & Business Rules * KYC compliance * GST & TDS reports * Data protection * Audit readiness --- ## 22. Summary This B2B Recharge Portal is a **complete financial transact...

    €1807 Average bid
    €1807 Offre moyenne
    41 offres

    Poszukujemy doświadczonego programisty lub zespołu do realizacji projektu polegającego na budowie skalowalnego systemu scrapowania danych z popularnego serwisu ogłoszeniowego. Celem projektu jest stworzenie kontenerowej aplikacji, która będzie pobierać zadania z RabbitMQ, automatycznie skalować instancje scrapera, obsługiwać dynamiczne filtry, zapisywać dane do dedykowanej bazy oraz integrować się z istniejącą infrastrukturą monitoringu. Kluczowe technologie i wymagania: • C# / .NET (technologia obowiązkowa) • Docker / Docker Compose • RabbitMQ (kolejkowanie zadań) • Selenium Grid • PostgreSQL lub MS SQL • OpenTelemetry, Sentry, Grafana • CI/CD Szczegółowe RFP oraz sposób składania ofert znajdują się w załączonym dok...

    €2031 Average bid
    €2031 Offre moyenne
    14 offres
    long-term partnership
    S'est terminé left

    ...AJAX Angular (v8–16), React, Knockout React Native Databases & Data Engineering SQL Server (2008 R2, 2012, 2014, 2016) Azure SQL MySQL, PostgreSQL MongoDB, Cosmos DB, SQLite Database Design, Modeling, Management & Analysis Cloud, DevOps & Infrastructure Microsoft Azure (Functions, Logic Apps, Service Bus, Blob Storage, Data Factory, Azure DevOps) AWS Cloud Docker, Kubernetes RabbitMQ CRM, ERP & Enterprise Platforms Microsoft Dynamics CRM 365 Dynamics Business Central Sage CRM NopCommerce Sitefinity v12.2 Umbraco v8.0 DotNetNuke v4.0 Python, AI & Advanced Solutions Python, Django, Flask, Pyramid REST APIs, WebSockets PySpark AI Email & Chatbot Solutions Data Science & Analytics CMS, E-Commerce & Web Platforms Wor...

    €4 / hr Average bid
    €4 / hr Offre moyenne
    20 offres

    ...microservice back-end with a React Native front end, hosted on Ubuntu servers in AWS. Right now the most urgent need is to deliver new functionality, and nearly all of that work sits squarely on the back end. Your first assignments will centre on extending our microservice architecture and exposing new, well-documented APIs. You’ll be writing C#, containerising services, wiring events through RabbitMQ, and persisting data in PostgreSQL—then shipping the code straight into production. I pay $6/hour for hands-on development only; time spent reading code, researching, or experimenting is on the freelancer. Work independently, own your tasks, communicate clearly, and suggest improvements when you see them. Do that well and there’s steady, long-term work waiting for...

    €7 / hr Average bid
    €7 / hr Offre moyenne
    105 offres

    I’m ready to start a green-field backend built in Java 17+ with Spring Boot. The goal is a production-ready, event-driven microservice suite that exposes well-designed REST APIs, integrates with MySQL, and is easy to scale and maintain. Here’s the core of what I need you to handle: • Design and implement an event-driven microservice architecture (Kafka, RabbitMQ, or similar—your recommendation is welcome) with one clear API Gateway. • Model the domain and create MySQL schemas from scratch, wiring them up through Spring Data JPA or another proven persistence layer. • Develop clean, versioned REST endpoints for each service and document them (Swagger/OpenAPI). • Provide automated unit, integration, and API tests so the build stays reliable....

    €9 / hr Average bid
    €9 / hr Offre moyenne
    34 offres

    I’m ready to start a green-field backend built in Java 17+ with Spring Boot. The goal is a production-ready, event-driven microservice suite that exposes well-designed REST APIs, integrates with MySQL, and is easy to scale and maintain. Here’s the core of what I need you to handle: • Design and implement an event-driven microservice architecture (Kafka, RabbitMQ, or similar—your recommendation is welcome) with one clear API Gateway. • Model the domain and create MySQL schemas from scratch, wiring them up through Spring Data JPA or another proven persistence layer. • Develop clean, versioned REST endpoints for each service and document them (Swagger/OpenAPI). • Provide automated unit, integration, and API tests so the build stays reliable....

    €2 / hr Average bid
    €2 / hr Offre moyenne
    24 offres

    ...sólida como Tech Lead o Senior Architect. 3 Dominio de Java 17+ y Spring Boot. 4 Experiencia comprobable en: Microservicios 5 Arquitectura Hexagonal+ DDD 6 Manejo avanzado de PostgreSQL. 7 Uso de Redis (cache, colas, locking). 8 Experiencia en sistemas de alta concurrencia. Deseables: Experiencia en marketplaces, subastas o sistemas en tiempo real. Conocimientos en mensajería/eventos (Kafka, RabbitMQ, etc.). Experiencia integrando SDKs de video streaming. DevOps básico: Docker, CI/CD. Experiencia en entornos cloud (AWS / OVH). Habilidades blandas: Liderazgo técnico fuerte. Pensamiento arquitectónico y estratégico. Capacidad para tomar decisiones técnicas complejas. Comunicación clara con perfiles técnicos y no t&...

    €570 Average bid
    €570 Offre moyenne
    39 offres
    X TWITTER API Mass-Action Panel
    S'est terminé left

    ...framework is fine) with login, account selector, bulk action composer, progress tracking, and CSV export. • Backend service that authenticates multiple existing X accounts, schedules mass follows/messages/likes, and enforces per-account limits. • Integration layer calling Cupid AI Chatbot API for on-the-fly message generation and conversation context. • Scalable job queue, preferably Redis/RabbitMQ or similar, with clear status callbacks to the front end. • Deployment scripts (Docker or comparable) so I can spin this up on a clean VPS and scale horizontally if needed. Acceptance criteria 1. Given 500 existing X accounts, the panel completes a 5,000-follow batch within specified API limits and returns a success log per account. 2. A drafted messa...

    €32 / hr Average bid
    €32 / hr Offre moyenne
    105 offres

    ...and backend cleanly * Ensure the system is stable, usable, and production-ready Responsibilities * Work with 14/15 and TypeScript across frontend and backend * Maintain and improve APIs using tRPC * Work with PostgreSQL, Redis, RabbitMQ * Implement and optimize Typesense search * Integrate AI services (embeddings, parsing, structured outputs) * Handle real-time connections (WebSockets) * Ship clean, maintainable, production-quality code Tech Stack * 14/15, React, Tailwind CSS * TypeScript, Node.js * tRPC, NextAuth * PostgreSQL, Redis, RabbitMQ * Typesense * Google Vertex AI * OpenAI / Groq * Stripe Requirements * Senior-level experience with production systems * Strong ownership mindset * Comfortable working independently or as a two-person team * Clear communication ...

    €8 / hr Average bid
    €8 / hr Offre moyenne
    152 offres

    ...en tiempo real, con transmisión en vivo. 3 Dominio de Java 21+ y Spring Boot. 4 Experiencia comprobable en: Microservicios 5 Arquitectura Hexagonal+ DDD 6 Manejo avanzado de PostgreSQL. 7 Uso de Redis (cache, colas, locking). 8 Experiencia en sistemas de alta concurrencia. Deseables: Experiencia en marketplaces, subastas o sistemas en tiempo real. Conocimientos en mensajería/eventos (Kafka, RabbitMQ, etc.). Experiencia integrando SDKs de video streaming. DevOps básico: Docker, CI/CD. Experiencia en entornos cloud (AWS / OVH). Habilidades blandas: Pensamiento arquitectónico y estratégico. Capacidad para tomar decisiones técnicas complejas. Comunicación clara con perfiles técnicos y no técnicos. Alto sentido de resp...

    €444 Average bid
    €444 Offre moyenne
    42 offres

    ...en tiempo real, con transmisión en vivo. 3 Dominio de Java 21+ y Spring Boot. 4 Experiencia comprobable en: Microservicios 5 Arquitectura Hexagonal+ DDD 6 Manejo avanzado de PostgreSQL 7 Uso de Redis (caché, colas, locking). 8 Experiencia en sistemas de alta concurrencia. Deseables: Experiencia en marketplaces, subastas o sistemas en tiempo real. Conocimientos en mensajería/eventos (Kafka, RabbitMQ, etc.). Experiencia integrando SDKs de video streaming. DevOps básico: Docker, CI/CD. Experiencia en entornos cloud (AWS / OVH). Habilidades blandas: Pensamiento arquitectónico y estratégico. Capacidad para tomar decisiones técnicas complejas. Comunicación clara con perfiles técnicos y no técnicos. Alto sentido ...

    €388 Average bid
    €388 Offre moyenne
    41 offres

    ...understanding of: Stateless backend design Horizontal scaling strategies Background workers and job queues Proven experience using Redis in production Experience designing systems that handle high concurrency and burst traffic Strong fundamentals in system design and trade-offs Ability to reason clearly about CPU, memory, and I/O bottlenecks Good to Have (Strong Plus) Experience with BullMQ, RabbitMQ, Kafka, or similar systems Experience processing large files (PDFs, OCR, media pipelines) Experience with cloud infrastructure (AWS, GCP, Docker) Experience scaling systems from 10k to 100k+ users Experience building multi-tenant SaaS platforms What This Role Is NOT Not a CRUD-only API role Not a frontend role Not a role focused on “adding sockets everywhere&rd...

    €223 Average bid
    €223 Offre moyenne
    21 offres

    ... - None (NoOp for testing) - One-time and Recurring payment can be demoed with all integrated PSPs using sandbox accounts. - Async Messaging: RabbitMQ producer is implemented for events with transaction payload. - Distributed Environments / Kubernetes safety: - All functionality can run reliably on Kubernetes - Execution is idempotent to prevent duplicate processing - Components are safe to run in parallel across multiple pods - Coordination and state handling support distributed execution without race conditions - Traceability: Every log entry and RabbitMQ message must contain a correlationId traceable across ecosystem modules. - Docker container builds successfully and runs without errors. - All unit tests pass with >80% code coverage

    €525 Average bid
    €525 Offre moyenne
    128 offres

    ...sólida como Tech Lead o Senior Architect. 3 Dominio de Java 17+ y Spring Boot. 4 Experiencia comprobable en: Microservicios 5 Arquitectura Hexagonal+ DDD 6 Manejo avanzado de PostgreSQL. 7 Uso de Redis (cache, colas, locking). 8 Experiencia en sistemas de alta concurrencia. Deseables: Experiencia en marketplaces, subastas o sistemas en tiempo real. Conocimientos en mensajería/eventos (Kafka, RabbitMQ, etc.). Experiencia integrando SDKs de video streaming. DevOps básico: Docker, CI/CD. Experiencia en entornos cloud (AWS / OVH). Habilidades blandas: Liderazgo técnico fuerte. Pensamiento arquitectónico y estratégico. Capacidad para tomar decisiones técnicas complejas. Comunicación clara con perfiles técnicos y no t&...

    €157 Average bid
    €157 Offre moyenne
    28 offres
    Laravel Web App Upgrade
    S'est terminé left

    ...basic security best practices (authentication, data protection). - Technical documentation for installation, deployment and maintenance. 5. Deliverables - Fully functional production-ready application. - Source code ownership transfer. - Installation and administration documentation. Required Qualifications - Proven experience with Laravel / PHP. - Experience with queue systems (Redis, Horizon, RabbitMQ or equivalent). - Experience building subscription systems and integrating payment gateways. - Strong understanding of scalable architecture and performance optimization. - Reliability in delivery and documentation. Evaluation Criteria The contract will be awarded based on: ✔ Total financial offer (lowest bid principle). ✔ Technical competence and portfolio. ✔ Realistic delivery...

    €470 Average bid
    €470 Offre moyenne
    122 offres
    Tech Lead Senior Java + Spring Boot
    S'est terminé left

    ...Experiencia comprobable en: Microservicios Arquitectura Hexagonal DDD Diseño de APIs RESTful. Manejo avanzado de PostgreSQL. Uso de Redis (cache, colas, locking). Experiencia con control de versiones (Git) y flujos de PR. Experiencia en sistemas de alta concurrencia. Deseables Experiencia en marketplaces, subastas o sistemas en tiempo real. Conocimientos en mensajería/eventos (Kafka, RabbitMQ, etc.). Experiencia integrando SDKs de video streaming. DevOps básico: Docker, CI/CD. Experiencia en entornos cloud (AWS / GCP / Azure). Habilidades blandas Liderazgo técnico fuerte. Pensamiento arquitectónico y estratégico. Capacidad para tomar decisiones técnicas complejas. Comunicación clara con perfiles té...

    €375 Average bid
    €375 Offre moyenne
    42 offres
    Go Microservice & Full-Stack Build
    S'est terminé left

    I’m putting together a production-ready microservice architecture written in Go. The heart of the work is a robust queuing layer—think Kafka or RabbitMQ—so messages flow reliably between services. I’ll share the exact flow charts and edge-cases once we start, but the goal is a clean, well-tested service that can scale without drama. For the user-facing side I’d like the front-end handled in react as well, keeping the stack uniform for faster compilation pipelines and simpler deployments. Data lands in a SQL store, specifically MySQL, so the schema, migrations, and query layer need to follow best practices and remain easy to extend. Beyond the initial build I’ll need ongoing pairing: troubleshooting, adding new endpoints, tightening performance, ...

    €3 / hr Average bid
    €3 / hr Offre moyenne
    16 offres

    ...75 questions total: 20 from Physics, 20 from Chemistry, 35 from Math). True Randomization (The "Anti-Cheat" Protocol): Question Shuffling: No two consoles will display the same question at the same time. Option Shuffling: Even if two students see the same question, the choice order (A, B, C, D) must be randomized. 30-Node Stability: The server must utilize an Asynchronous Queue (like Redis or RabbitMQ) to handle 30 simultaneous database "Save" requests every 10 seconds without UI freezing. 2.3 Student Profiling & Predictive Analytics Identity Management: Every student is registered via a Permanent Index Number. Historical Dashboard: Upon login, the student sees their "Wall of Fame/Progress," listing all previous exams, dates, and raw scores. Anal...

    €93 Average bid
    €93 Offre moyenne
    6 offres

    ...from all PSPs Standardizes them into one unified format Sends the standardized event to merchants 6. Merchant & Admin Dashboard Frontend (React/ preferred) that provides: Transaction list PSP performance analytics Routing rule configuration Webhook logs Merchant management ⚙️ Technical Requirements Backend: FastAPI or Node.js (TypeScript) Database: PostgreSQL Queues: Redis / RabbitMQ Deployment: Docker + Kubernetes Logging: Grafana / Prometheus API security: JWT, rate-limiting Clean modular architecture Deliverables Full backend codebase API documentation (Swagger / Postman) PSP integration connectors Merchant dashboard + Admin dashboard Deployment guide (Docker/Kubernetes) Basic routing rules implemented Webhooks unification service Tokenization me...

    €163 Average bid
    €163 Offre moyenne
    82 offres
    Backend Developers Needed Now
    S'est terminé left

    ...mechanisms and high-performance microservice architecture). Web3 Capabilities: Proven experience in Web3 development. Proficient in JSON-RPC interactions, wallet integration, smart contract calls, and on-chain data synchronization (using libraries such as ethers-rs, solana-program, or go-ethereum). Middleware Mastery: Deep understanding of distributed processing with Message Queues (Kafka, Pulsar, or RabbitMQ). Expert in Redis cache design, including data structure optimization, distributed locking, and race condition resolution. Cloud Native: Proficient with Docker containerization and Kubernetes (K8s) environments, with hands-on experience in designing and deploying cloud-native applications. 2. Software Engineering & Quality Exceptional Code Quality: A near-obsessive comm...

    €460 Average bid
    €460 Offre moyenne
    60 offres
    Backend Developers Needed Now
    S'est terminé left

    ...mechanisms and high-performance microservice architecture). Web3 Capabilities: Proven experience in Web3 development. Proficient in JSON-RPC interactions, wallet integration, smart contract calls, and on-chain data synchronization (using libraries such as ethers-rs, solana-program, or go-ethereum). Middleware Mastery: Deep understanding of distributed processing with Message Queues (Kafka, Pulsar, or RabbitMQ). Expert in Redis cache design, including data structure optimization, distributed locking, and race condition resolution. Cloud Native: Proficient with Docker containerization and Kubernetes (K8s) environments, with hands-on experience in designing and deploying cloud-native applications. 2. Software Engineering & Quality Exceptional Code Quality: A near-obsessive comm...

    €275 Average bid
    €275 Offre moyenne
    10 offres

    ...where all components run on a single Virtual Machine for R&D and commercial testing purposes. The project also includes the configuration of WebRTC and the preparation of a White-Label Mobile Softphone (based on Linphone) fully integrated with this system. Scope of Work: 1. Single Node Kazoo Infrastructure (Server-Side): All-in-One Architecture: Installation of Kazoo, FreeSWITCH, Kamailio, RabbitMQ, BigCouch/CouchDB, and RTPEngine on a single VM within Proxmox. Network & NAT Traversal: Proper configuration of IP, Ports, and ACLs to ensure seamless RTP/Signaling flow behind Proxmox NAT. Multi-Tenant Capability: Although it is a single node, it must be configured to support multiple resellers/companies (Multi-Tenant). SIP Trunking: Setup and testing of Inbound and Out...

    €145 Average bid
    €145 Offre moyenne
    21 offres

    ...where all components run on a single Virtual Machine for R&D and commercial testing purposes. The project also includes the configuration of WebRTC and the preparation of a White-Label Mobile Softphone (based on Linphone) fully integrated with this system. Scope of Work: 1. Single Node Kazoo Infrastructure (Server-Side): All-in-One Architecture: Installation of Kazoo, FreeSWITCH, Kamailio, RabbitMQ, BigCouch/CouchDB, and RTPEngine on a single VM within Proxmox. Network & NAT Traversal: Proper configuration of IP, Ports, and ACLs to ensure seamless RTP/Signaling flow behind Proxmox NAT. Multi-Tenant Capability: Although it is a single node, it must be configured to support multiple resellers/companies (Multi-Tenant). SIP Trunking: Setup and testing of Inbound and Out...

    €387 Average bid
    €387 Offre moyenne
    32 offres

    ...frameworks such as Express.js. Proven experience building and operating large-scale, high-traffic production systems. Strong frontend experience with Next.js. Solid understanding of MongoDB, MySQL and NoSQL data modeling. Experience with Redis or similar caching systems. Strong knowledge of microservices architecture and API design. Hands-on experience with message queues / event-driven systems (Kafka, RabbitMQ, SQS, etc.). Strong hands-on experience with AWS cloud infrastructure (EC2, S3, RDS, Lambda, CloudFront, etc.). Experience managing deployments, production environments, and system monitoring. Ability to make and own long-term technical and architectural decisions. Nice to Have Experience building e-commerce or marketplace platforms. Exposure to the automotive domain (spa...

    €2119 Average bid
    €2119 Offre moyenne
    212 offres

    We are looking for an experienced Embedded / IoT Software freelancer to design and implement a Python-based on-device application that communicates with a C# backend server using MQTT for configuration, status reporting, and control messaging. Development will include - Design and implement a Python agent application runn...Skills - Strong Python experience (services, async IO, system interaction) - Embedded Linux experience (network configuration, services, logging) - MQTT (topics, QoS, retained messages, reconnection handling) - C# (.NET) experience for building a test/control server - Protobuf message design Nice to Have: - Experience with IoT fleet management - Experience with Grafana for telemetry monitoring - RabbitMQ MQTT - Experience with device provisioning and remote con...

    €1263 - €2527
    Scellé
    €1263 - €2527
    130 offres
    C# GPS Monitoring & Alerts
    S'est terminé left

    ...Amazon Kinesis, evaluates it against trigger rules already stored in SQL Server, and raises alerts. The first rule to nail is detecting unscheduled stops, but the engine must also handle triggers for digital input changes, excessive speed, low fuel, and low battery. When a rule fires the service must: • Send Emails, SMS, and/or hit a Webhook, as specified per trigger • Publish an event through RabbitMQ using MassTransit Configuration must happen through a small web interface that reads and writes the existing SQL schema; think Blazor, Razor Pages, or any light UI stack you prefer, as long as it keeps the data model intact. If you have experience with Elsa, even better. Deliverables I’m expecting: 1. Source code for the monitoring engine and notification handl...

    €1263 - €2527
    Scellé
    €1263 - €2527
    110 offres

    ...concise explanation (meeting notes, annotated diagram, or short write-up) of existing data-flow paths for both sync and async calls - Actionable recommendations or code snippets that resolve each provided Jira ticket - A brief Q&A or screen-sharing session to ensure the fixes are fully understood Tech stack keywords you should know: Java 17, Spring Boot 3.x, Spring Cloud, REST, gRPC, Kafka/RabbitMQ, Docker, Kubernetes. Only applicants from Pune will be considered. If you’re confident debugging service interactions and can articulate clear, pragmatic solutions locally in Pune area, I’m ready to get started right away!...

    €3 / hr Average bid
    €3 / hr Offre moyenne
    15 offres

    ...microservices later. The core modules should cover catalog, cart, checkout, user accounts, and order management, with clean REST APIs between them. We are open to improvements for the below requirements. Technology Stack: ● Frontend: React/ ● Backend: Java Spring Boot ● API Gateway: Kong or AWS API Gateway ● Databases: PostgreSQL + MongoDB ● Search Engine: Elasticsearch Cluster ● Message Queue: RabbitMQ or AWS SQS ● Cache: Redis Cluster ● Hosting: AWS (ECS/EKS) Core Services (7 Services): 1. Product Service: Catalog management, SKU management, 100,000+ products 2. Order Service: Shopping cart, checkout, order fulfillment, multi-vendor routing 3. User Service: Authentication, user accounts, customer preferences 4. Integration Service: ERP, EDI, third-party API connections 5. Pa...

    €27837 Average bid
    €27837 Offre moyenne
    52 offres

    ...Development in Flutter (Android + iOS) State management: Bloc or Riverpod Clean Architecture structure Secure local storage App integrity checks (anti-root, anti-jailbreak) Screen recording blocked on sensitive pages 5. Backend Architecture Recommended Technology Stack Node.js (NestJS) or GoLang PostgreSQL (main database) Redis (cache + rate limiting) Message Queue: Redis Streams or RabbitMQ S3 storage for documents JWT authentication Separation of services (modular or microservices) Core Backend Services Authentication Service User & KYC Service Wallet & Ledger Service Transfer Engine (Domestic & International) FX & Fee Engine Notification Service Fraud & Risk Engine Admin Panel Backend 6. Database Schema (Key Tables) users otp_codes ...

    €6289 Average bid
    €6289 Offre moyenne
    77 offres
    Stock Market Day Trading Bot
    S'est terminé left

    ...Learning optional). Build risk-managed signal generation logic for NIFTY option trades. (Optional) Connect with broker APIs for execution + paper/live trade mode. Required Skills Strong experience in Python (preferred) or Java/Node). Experience with algo trading / HFT / quant systems. Knowledge of NIFTY/OI/Options Greeks & intraday market microstructure. Hands-on with Kafka/Redis Streams/RabbitMQ, TimescaleDB/Postgres, Docker/Microservices. Experience in ML/Backtesting frameworks (Pandas, NumPy, Scikit-Learn, XGBoost). Experience with REST APIs, WebSockets, streaming data handling. Nice-to-Have Experience with broker APIs (Angel One, Zerodha, AliceBlue etc.) Experience deploying on AWS/GCP UI dashboard skills (React/Vue/Streamlit) for visualization. Outcome A f...

    €1744 Average bid
    €1744 Offre moyenne
    24 offres
    Real-Time Football Data Pipeline
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    ...scores, team stats, league table—update in under 65 seconds end-to-end. 2. No duplicate or missing matches when compared with the Source Website across a full matchday. 3. API passes provided Postman collection tests without modification. If you’ve already handled real-time football feeds or worked with scraping libraries (BeautifulSoup, Playwright, Puppeteer) or event-driven tools (Kafka, RabbitMQ, AWS Lambda), mention it in your proposal along with a brief timeline. 1. Goal and Requirements The freelancer's task is to create a seamless integration solution that extracts the required match data from the Source Website and makes it available to our WordPress platform via a stable API endpoint. Crucial Requirement: The Source Website employs strict anti-s...

    €57 Average bid
    €57 Offre moyenne
    28 offres

    ...to suggestions): Backend: Node.js or Python (Django/Flask), REST/GraphQL API Mobile: Flutter or React Native Web: React ASR/STT: WhisperX, Google Speech, or Azure Speech OCR for PDF: Tesseract / OCRmyPDF Translation: Google/Microsoft Translation API or integrated LLM translation Video processing: FFmpeg Database: PostgreSQL + cloud file storage (S3) Task queue for heavy jobs: Celery / Redis / RabbitMQ User Flow Overview: User uploads a video/audio file or a PDF. Selects source language and target language (if translation is needed). System generates subtitles or extracts PDF text automatically. User edits and styles subtitles in a clean editor. System burns subtitles or exports them as files. User downloads results or shares a link. Payment is handled based on usage or s...

    €479 Average bid
    €479 Offre moyenne
    78 offres

    ...with **payments or financial flows** (e.g. Stripe, wallets, payment gateways, ledgers, etc.) * Experience collaborating on **open-source projects** (pull requests, code reviews, issue tracking) * Ability to read existing codebases, troubleshoot quickly, and propose clean solutions #### Nice to Have * Experience with: * **NestJS** or similar Node.js frameworks * **Message queues** (e.g. RabbitMQ, Redis streams, etc.) * **Bitcoin / Lightning / crypto** payment rails * Docker / Kubernetes and modern CI/CD workflows * Strong eye for **API design** and developer experience...

    €29 / hr Average bid
    €29 / hr Offre moyenne
    144 offres
    Go Event-Driven Microservices
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    ...service will react to domain events, publish follow-up events, and expose minimal HTTP health endpoints. The workflow is already running on Kubernetes, so the code has to build cleanly into Docker images and ship with the manifests (YAML or Helm) required for rolling updates, autoscaling, and basic observability (Prometheus metrics and structured logs). We can decide together whether Kafka, RabbitMQ, or another streaming layer makes the most sense; the services simply need a clean pub/sub abstraction so I can swap brokers later without code churn. Deliverables • Well-structured Go source for each microservice, including unit tests • Dockerfiles and CI script (GitHub Actions preferred) producing versioned images • Kubernetes deployment files (or Helm ...

    €143 Average bid
    €143 Offre moyenne
    29 offres

    ...Handling sync, deduplication, and incremental updates Notifying the main backend when results are ready Optimized for high-volume SMS processing Technical Requirements: You must be comfortable with: Node.js / NestJS / FastAPI / Go (any modern backend framework) MySQL or Postgres MongoDB Firebase authentication Event-driven communication between microservices Redis caching Queue systems (SQS, RabbitMQ, or similar) Writing clean, testable code Designing efficient database schemas Building APIs meant for 10–50k users Ensuring <300ms P95 API responses for standard calls Handling large SMS datasets (tens of thousands per user) Performance Expectations The delivered system must handle: 1k requests/min on the main backend without errors 10k SMS/min ingestion on the microser...

    €295 Average bid
    €295 Offre moyenne
    32 offres

    ...later. The core modules should cover catalog, cart, checkout, user accounts, and order management, with clean REST APIs between them. We are open to improvements for the below requirements. Technology Stack: ● Frontend: React/ ● Backend: Java Spring Boot ● API Gateway: Kong or AWS API Gateway ● Databases: PostgreSQL + MongoDB ● Search Engine: Elasticsearch Cluster ● Message Queue: RabbitMQ or AWS SQS ● Cache: Redis Cluster ● Hosting: AWS (ECS/EKS) Core Services (7 Services): 1. Product Service: Catalog management, SKU management, 100,000+ products 2. Order Service: Shopping cart, checkout, order fulfillment, multi-vendor routing 3. User Service: Authentication, user accounts, customer preferences 4. Integration Service: ERP, EDI, third-party API connections 5....

    €28945 Average bid
    €28945 Offre moyenne
    65 offres

    ...programming (event-driven architecture, async/await). Solid knowledge of REST APIs, authentication (JWT, OAuth), and input validation. Basic working knowledge of HTML, CSS, and TypeScript. Good understanding of version control (Git) and branching workflows. Familiarity with backend security practices and error handling. Exposure to Linux command-line operations. Good to Have Knowledge of Redis, RabbitMQ, Kafka, or other messaging queues. Experience with Docker or containerized deployments. Exposure to AWS, GCP, or Azure. Understanding of microservices or distributed systems. Experience with unit testing frameworks (Jest, Mocha, etc.). Qualifications Bachelor’s degree in Computer Science, Engineering, or related field. Minimum 3 years of hands-on experience in ...

    €536 Average bid
    €536 Offre moyenne
    36 offres

    ...single-use codes, a Spend Balance Aggregator, and a Notification Service. Integrate multiple third-party Partner APIs for real-time redemption (airtime, utilities, etc.). Implement a secure, relational database (PostgreSQL/MySQL) with data encryption and audit logging. Architect the system using a microservices approach (Docker/Kubernetes) with an API Gateway, caching (Redis), and async queues (RabbitMQ/Kafka). Incorporate robust fraud detection, rate limiting, and secure authentication (JWT/OAuth 2.0). Required Skills: Backend Development (Node.js/Python/Java) Microservices & API Gateway Design Database Design & Management (PostgreSQL/MySQL) WhatsApp Business API & USSD Integration Third-Party API Integration DevOps & Cloud Deployment (AWS/GCP/Azure, D...

    €566 Average bid
    LDN
    €566 Offre moyenne
    70 offres

    ...problem-solving skills, and the ability to work on large-scale distributed systems. This role requires working with global teams, so the shift timing will be 6:00 PM – 3:00 AM IST. Required Skills & Experience 5+ years of professional software development experience. Strong hands-on expertise in Python, Django, and FastAPI. Proficiency in SQLAlchemy ORM and PostgreSQL. Experience with messaging queues (RabbitMQ, Kafka, Azure Service Bus, etc.). Strong understanding of containerization (Docker) and orchestration (Kubernetes). Experience deploying and maintaining services on Azure or similar cloud environments. Strong knowledge of REST API design, authentication, and microservice architecture. Excellent debugging, optimization, and analytical problem-solving skills. Str...

    €495 Average bid
    €495 Offre moyenne
    9 offres
    Seasoned Django Backend Engineer
    S&#039;est terminé left

    The next milestone of my platform centres on backend development: expanding and hardening a cluster of Python microservices that expose REST APIs, stream data through RabbitMQ/Kafka, and run container-first on AWS. All core work is in Python 3 with Django and SQLAlchemy talking to PostgreSQL, so deep, day-to-day fluency with those two libraries is essential. To start this project pitch please add "" Dehradun or Near by Dehradun Location " only genuine location will prefer or get chat directly to me. You will design, code, test, containerise, and ultimately ship new services, then keep them healthy in production. I already have Docker images running in a Kubernetes staging cluster; the task now is to refine the deployment pipeline, implement advanced authentication f...

    €1073 Average bid
    €1073 Offre moyenne
    25 offres