Job Description

Responsibilities

• TCP Server Implementation: Develop a TCP server to receive data from GPS devices (Myrope M588F)
• Database Design & Optimization: Design and optimize a geospatial database using PostgreSQL + PostGIS, including:
• Creating tables with geometries (e.g., geometry(Point))
• Writing advanced queries using functions like ST_Within, ST_Distance, and ST_Contains
• Implementing spatial indexing and table partitioning for performance optimization
• Asynchronous Messaging: Configure and manage RabbitMQ for asynchronous data processing, including:
• Setting up queues, exchanges, and bindings
• Implementing producers/consumers in NestJS
• Handling fault-tolerant strategies like retries, DLQ (Dead Letter Queues), and message persistence
• Real-Time Updates: Integrate WebSocket (using libraries like socket.io) for real-time updates and synchronization with PostgreSQL
• GPS Data Processing: Decode and process NMEA GPRMC messages, including:
• Converting DMS coordinates to decimals
• Validating checksums and transforming raw data into structured formats (e.g., JSON)
• Geofencing & Alerts: Develop services to validate geofences, detect route deviations, and generate alerts (email, SMS, push notifications)
• Security: Implement robust security measures, including:
• Device authentication using JWT
• Data encryption in transit (TLS/SSL) and at rest
• Configuration of queues, exchanges, and bindings
• Implementation of Pub/Sub patterns and priority queues
• GPS Data Processing:
• Decoding and validating NMEA GPRMC messages
• Handling data buffers and retransmission of historical data
• Building WebSocket servers in NestJS
• Optimizing performance for high-concurrency environments

Requirements

• We are seeking a highly skilled Backend Developer with advanced expertise in Node.js, NestJS, PostgreSQL, and RabbitMQ to join our team and work on a cutting-edge GPS tracking and real-time monitoring system
• If you have a strong background in building scalable, modular architectures and experience with geospatial data processing, we’d love to hear from you!
• Protection against common attacks (e.g., SQL injection, DoS)
• Node.js & NestJS:
• Advanced proficiency in Node.js and TypeScript
• Hands-on experience with NestJS (modules, controllers, services, interceptors, guards, pipes)
• Knowledge of network protocols (e.g., TCP for GPS data, WebSocket for real-time communication)
• PostgreSQL + PostGIS:
• Expertise in designing and optimizing geospatial databases
• Experience with spatial queries, indexing, and partitioning
• Integration with NestJS using ORMs like TypeORM or Prisma
• Deployment using Docker in cloud environments
• Proven experience in GPS tracking systems or real-time monitoring
• Implementation of geofencing and route deviation detection algorithms
• Integration of messaging systems (RabbitMQ/Kafka) in distributed architectures
• Optimization of geospatial databases handling high data volumes
• Ability to collaborate effectively with cross-functional teams (frontend, DevOps, QA)
• Strong technical documentation skills
• Problem-solving skills in high-pressure environments
• Backend: NestJS + TypeScript
• If you’re passionate about building scalable, real-time systems and have the skills to tackle complex backend challenges, we’d love to work with you!
• Please submit your proposal with examples of relevant projects and your approach to handling geospatial data and real-time communication