Senior Java Backend Developer

Location: Egypt - Cairo

Job Type: Full Time

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
  
  

Required Qualifications

Experience & Education

• Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent experience
• 7+ years of professional Java backend development experience
• Proven track record of building high-concurrency distributed systems
• Experience working in agile development environments
• Experience in a senior or lead developer role
  
  

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
  
  

Preferred Qualifications

• Experience with Docker and Kubernetes for containerized deployments
• Knowledge of Linux/Ubuntu server administration and deployment
• Familiarity with Apache Kafka or other distributed streaming platforms
• Experience with Elasticsearch for log analysis and search capabilities
• Knowledge of time-series databases (InfluxDB, TimescaleDB)
• Understanding of IoT device management and protocol translation
• Experience with real-time data processing frameworks (Apache Storm, Apache Flink)
• Familiarity with monitoring tools (Prometheus, Grafana, ELK stack)
• Knowledge of security best practices for IoT systems
• Experience with CI/CD pipelines and DevOps practices
• Contribution to open-source Java projects
• Experience with cross-platform deployment scenarios
  
  

What We Offer

• Competitive salary package
• Comprehensive health insurance
• Professional development opportunities
• Collaborative and innovative work environment
• Opportunity to work on cutting-edge IoT platform serving millions of devices
• Exposure to latest technologies in IoT and distributed systems
  
  

Application Process

Please submit your resume along with a portfolio or GitHub profile showcasing your Java backend projects, including examples that demonstrate your expertise with distributed systems, IoT protocols, and high-concurrency applications. Include links to live applications or services you've built and any contributions to Java/IoT community projects.