Senior Java Backend Developer

Urban Ridge Supplies

Position Overview

We are seeking an experienced Senior Java Backend Developer to join our dynamic engineering team working on a high-concurrency IoT PaaS platform. This role requires a technical leader who can design and develop scalable backend systems for IoT data collection, processing, and analysis while mentoring junior developers and collaborating cross-functionally to deliver robust enterprise solutions.

Key Responsibilities

• Develop and maintain high-concurrency IoT PaaS services using SpringBoot framework
• Design and implement IoT data collection endpoints for various communication protocols (TCP, UDP, MQTT, HTTP)
• Build scalable data consumption and analysis endpoints for real-time IoT data processing
• Create robust data push endpoints and business-side APIs for seamless integration
• Develop audio/video alarm file services and streaming media components
• Design loosely coupled architecture with protocol-specific device access components
• Write protocol decoders following predefined rules for new IoT device integrations
• Implement webhook and OpenAPI methods for third-party platform integration
• Optimize system performance for high-throughput IoT data scenarios
• Conduct comprehensive code reviews and provide technical mentorship
• Collaborate with frontend developers, DevOps engineers, and product managers
• Lead backend architecture decisions and technical initiatives
• Implement comprehensive testing strategies and monitoring solutions
• Champion development best practices and coding standards
• Participate in agile development processes and sprint planning

Technical Skills

• Expert proficiency in Java (Java 8+) and Spring ecosystem (SpringBoot, Spring MVC, Spring Security)
• Strong experience with Netty framework for network programming and protocol handling
• Proficiency with message queue systems (RabbitMQ, Apache Kafka)
• Experience with Redis for caching and session management
• Knowledge of MongoDB for document-based data storage
• Proficiency with MySQL and relational database design
• Understanding of IoT communication protocols (TCP, UDP, MQTT, HTTP, WebSocket)
• Experience with RESTful API design and OpenAPI specifications
• Knowledge of webhook implementation and third-party system integration
• Familiarity with streaming media protocols and audio/video processing
• Experience with version control systems (Git) and collaborative workflows
• Understanding of microservices architecture and distributed systems

Core Competencies

• Exceptional problem-solving abilities and analytical thinking
• Strong attention to detail and commitment to code quality
• Excellent communication and mentorship skills
• Ability to translate business requirements into scalable technical solutions
• Strong collaborative mindset and cross-functional teamwork
• Experience with high-concurrency and high-availability system design