Rabbitmq jobs
...microservices platform (Phizica) that is 99% ready, but the final production deployment is failing. It runs perfectly in a local Docker cluster, but it is currently a "dark site" to the public internet because of networking/gateway blockages. The Technical Situation: Architecture: 10+ decoupled microservices (Node.js, Express, TypeScript, Prisma). Infrastructure: Docker Compose, PostgreSQL (PgBouncer), RabbitMQ (Outbox Pattern), and Nginx. The Problem: The machine is correctly assigned a Static Public IP (), and our Nginx gateway is listening. However, we are getting Connection Timeouts from the public internet. It works on the internal office network but fails globally. Root Cause Suspected: Likely a Cloud Catalyst / Firewall NAT conflict at the ISP level (Vortex Inf...
...and database connection pooling for maximum throughput with minimal resource consumption. • Monitor server health and application performance using tools such as New Relic, Datadog, or Grafana; proactively identify and resolve bottlenecks before they impact users. • Reduce server footprint through efficient memory management, lazy loading, pagination, background job processing (queues via Redis/RabbitMQ), and asynchronous task handling. Quality Assurance & DevOps • Write unit tests and integration tests (PHPUnit, Codeception) to maintain high code coverage and catch regressions early. • Set up and maintain automated deployment pipelines, containerised environments (Docker), and staging/production server configurations. • Perform load testing and stres...
...services, **RabbitMQ** for message queuing, and **Microsoft SQL Server (MSSQL)** as the primary database. This system will allow us to operate as an SMS aggregator/reseller, connect with multiple upstream SMS providers via SMPP, and provide API access to downstream clients. ## Core Objectives * Develop a scalable SMS gateway platform * Integrate SMPP client connections with upstream providers * Provide REST API for customers to send SMS * Implement asynchronous message processing using RabbitMQ * Real-time DLR (Delivery Report) handling * Billing, routing, and reporting system * High throughput and fault-tolerant architecture ## Technical Stack (Mandatory) * **Backend:** .NET 8 / .NET Core (RESTful API) * **Database:** Microsoft SQL Server (MSSQL) * **Queue System:**...
...(Over-the-Air) update (khususnya Android/Linux/Windows) 4. Dashboard & API Web dashboard untuk monitoring & control REST API / gRPC backend Role-based access control (RBAC) 5. Security & Compliance Encrypted communication (HTTPS / TLS) Device certificate management Token rotation & revoke mechanism 6. Scalability & Reliability Support hingga ribuan device (high concurrency) Queue system (Kafka / RabbitMQ / Redis) Fault-tolerant architecture Tech Stack (Flexible) Kami terbuka dengan stack, tapi prefer: Backend: Golang / Node.js Frontend: React / Mobile/Agent: Native / cross-platform sesuai OS Infra: Docker, Kubernetes (optional) Cloud: AWS / GCP / lokal server Kriteria Freelancer Berpengalaman di distributed system / scalable backend Pern...
...(Over-the-Air) update (khususnya Android/Linux/Windows) 4. Dashboard & API Web dashboard untuk monitoring & control REST API / gRPC backend Role-based access control (RBAC) 5. Security & Compliance Encrypted communication (HTTPS / TLS) Device certificate management Token rotation & revoke mechanism 6. Scalability & Reliability Support hingga ribuan device (high concurrency) Queue system (Kafka / RabbitMQ / Redis) Fault-tolerant architecture Tech Stack (Flexible) Kami terbuka dengan stack, tapi prefer: Backend: Golang / Node.js Frontend: React / Mobile/Agent: Native / cross-platform sesuai OS Infra: Docker, Kubernetes (optional) Cloud: AWS / GCP / lokal server Kriteria Freelancer Berpengalaman di distributed system / scalable backend Pern...
...concurrent WebSocket/API pulses from BLE beacons without latency. Multi-Tenant Hierarchy: Implement a robust, schema-based multi-tenant architecture to support a global hierarchy (Global Admin $rightarrow$ Country $rightarrow$ State $rightarrow$ Branch/Franchise). Data & Performance: Optimize PostgreSQL indexing, implement Redis caching, and transition heavy tasks to a distributed queue (Celery/RabbitMQ). Flutter Integration: Collaborate with our mobile team to ensure the real-time data streaming between Flutter and the backend is bulletproof. Phase 2: System Maintenance & Evolution 1-Year Commitment: Provide ongoing system maintenance, bug fixes, and security patches to ensure 99.9% uptime. Performance Monitoring: Continuously monitor server health as we cross the 10k...
In java based architecture applications, we have used Backend...UDS) → Spring Boot (Client → Phoenix → gRPC → Spring → Cassandra) 1) Load Balancer HAProxy Spring Boot skeleton + Cassandra setup + data migration scripts 2) Replace Dropwizard routes/controllers → Spring Boot REST endpoints, integrate Redis/RabbitMQ 3) Elixir/Phoenix WebSocket → gRPC bridge to Spring Boot 4) Full testing, API validation, VM deployment, docs Deliverables ✔ Fully migrated Spring Boot backend ✔ Cassandra based persistence layer ✔ Data migration scripts ✔ API compatibility validation ✔ gRPC bridge for WebSocket layer ✔ Redis/RabbitMQ integration ✔ VM deployment + testing + complete documentation ✔ Deployment support & documentation And deploying and testing...
...security groups, networking) Implement CI/CD pipelines for automated deployments Configure environment variables and secrets management Set up logging, monitoring, and backup strategies Optimize infrastructure for cost and scalability Assist with deployment troubleshooting and documentation Tech Stack Frontend: TypeScript Tailwind CSS NextAuth Backend: Node.js MongoDB Kafka / RabbitMQ (optional) REST APIs Infrastructure: AWS (EC2, S3, IAM) CI/CD (GitHub Actions or similar) Docker (preferred but optional) Requirements Strong experience with AWS cloud infrastructure Experience deploying Node.js / applications Experience with CI/CD pipelines Familiarity with security best practices Ability to document infrastructure setup clearly Prior DevOps experience ...
...engineers; while they refine models, you will expose their work through well-structured endpoints and schedule long-running jobs with Celery. A deep understanding of asynchronous programming, background job queues, and the nuances of production-grade REST APIs is therefore essential. Key tech you should already be fluent with includes: • Python 3.x, FastAPI, Pydantic • Celery with Redis or RabbitMQ back-ends • OAuth2 / JWT for securing endpoints • Docker and Git for reproducible builds and clean collaboration Deliverables I expect: • A versioned RESTful API that handles external service integration end-to-end • Celery task queues for model execution and heavy I/O workloads • Unit & integration test coverage ≥90 % plus API do...
...maintainable Java code on the back-end while also tying in the front-end layers so the entire flow feels seamless to the user. Key elements you’ll handle • Setting up and extending a Spring Boot framework that connects to a relational database; I already have tables sketched out, so efficient JPA/Hibernate mapping will be important. • Wiring the service layer to a message-queue solution (RabbitMQ or Kafka—open to whichever you prefer) so events are published and consumed reliably. • Implementing the usual full-stack glue—controllers, DTOs, and any lightweight front-end touches—so features can be demonstrated in a browser without extra hand-holding. • Writing concise documentation and a one-shot script or Dockerfile that lets me...
...services, **RabbitMQ** for message queuing, and **Microsoft SQL Server (MSSQL)** as the primary database. This system will allow us to operate as an SMS aggregator/reseller, connect with multiple upstream SMS providers via SMPP, and provide API access to downstream clients. ## Core Objectives * Develop a scalable SMS gateway platform * Integrate SMPP client connections with upstream providers * Provide REST API for customers to send SMS * Implement asynchronous message processing using RabbitMQ * Real-time DLR (Delivery Report) handling * Billing, routing, and reporting system * High throughput and fault-tolerant architecture ## Technical Stack (Mandatory) * **Backend:** .NET 8 / .NET Core (RESTful API) * **Database:** Microsoft SQL Server (MSSQL) * **Queue System:**...
...Developing APIs that power a customer-facing web dashboard Database design, optimization, and migration strategy CI/CD pipelines and containerized deployments 5+ years backend development Strong proficiency in Python (FastAPI or Django) and/or Node.js/TypeScript (Express, NestJS) Solid PostgreSQL/NoSQL experience (schema design, indexing, query optimization) Message queues and async processing (RabbitMQ, Kafka, Celery, or Bull) Docker and container orchestration basics RESTful API design and implementation at scale Git-based workflows (branching, PRs, code reviews) Security-conscious development practices Preferred / Bonus React / experience (full-stack capability) AWS cloud services (EKS, RDS, S3, SQS) Document processing or file parsing experience Multi-tenant SaaS architectu...
...and roll-out with minimal manual touch points. And the job you have to do requires experience in the following tasks: Here is the flow I have in mind: 3-VPS hybrid DB with Cassandra/PostgreSQL/Redis, RabbitMQ + WebSockets, Docker, CI/CD, HTTPS endpoint, and APM). 1. Hybrid database approach Distributed Cluster. 2. Containerize the application with Docker and automate builds via Maven or Gradle. 3. Primary Databases for Chat History Cassandra (NoSQL) 4. Secondary Databases PostgreSQL (for users Metadata) on the codebase’s data model. 5. Backed Language: Spring Boot Java 21/25 with RabbitMQ,and Maven or Gradle configuratio 6. Redis : Presence/Session 7. Real-time: WebSockets for bidirectional communication 8. also preferred APM (Prometheus + Grafana, ELK stack...
...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 ...
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.
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).
...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...
...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...
...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...
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....
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....
...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...
...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 ...
...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...
... - 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
...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...
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, ...
...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...
...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...
...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...
...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...
...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...
...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...
...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...
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...
...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...
...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!...
...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...
...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 ...
...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...
...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...
...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...
...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...
...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 ...
...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...
...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....
...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 ...
...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...
...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...
