Back-End Developer

Perfect Vision - KSA; Eastern Province; On-site; SAR 240,000 - 480,000; Full time

Job summary

Perfect Vision - KSA is seeking an experienced Senior Java Backend Developer to join our engineering team. You will design and build scalable backend systems for IoT data collection, processing, and analysis, while mentoring junior developers and collaborating across functions to deliver enterprise-grade solutions.

The role requires leadership in backend architecture, microservices, and high-throughput data handling, with extensive experience in Spring and Netty.

Qualifications

• 7+ years of professional Java backend development experience.
• Experience building high-concurrency distributed systems.
• Experience in agile development environments.
• Experience in a senior or lead developer role.
• Expert proficiency in Java (Java 8+) and Spring ecosystem (SpringBoot, Spring MVC, Spring Security).
• Strong experience with Netty 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 and MySQL.
• Understanding of IoT protocols (TCP, UDP, MQTT, HTTP, WebSocket).
• Experience with RESTful API design and OpenAPI specifications.
• Knowledge of webhook implementation and third-party integration.
• Familiarity with streaming media protocols and audio/video processing.
• Experience with Git and collaborative workflows.
• Understanding of microservices architecture and distributed systems.
• Experience with Docker and Kubernetes for containerized deployments.
• Knowledge of Linux/Ubuntu server administration and deployment.
• Familiarity with Elasticsearch for log analysis and search.
• Knowledge of time-series databases (InfluxDB, TimescaleDB).
• 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.

Responsibilities

• Develop and maintain high-concurrency IoT PaaS services using SpringBoot framework.
• Design and implement IoT data collection endpoints for TCP/UDP/MQTT/HTTP.
• Build scalable data consumption and analysis endpoints for real-time processing.
• Create robust data push endpoints and APIs for integration.
• Develop audio/video alarm file services and streaming components.
• Lead backend architecture decisions and technical initiatives.
• Implement comprehensive testing strategies and monitoring solutions.
• Collaborate with frontend, DevOps, and product managers.
• Champion development best practices and coding standards.
• Participate in agile development and sprint planning.

Skills

Java backend

High concurrency

Distributed systems

Agile

Mentorship

OpenAPI

REST APIs

Microservices

Docker

Kubernetes

Git

Kafka

RabbitMQ

Redis

MongoDB

MySQL

Elasticsearch

Linux

IoT protocols

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Kubernetes

Git

RabbitMQ

Kafka

Redis

MongoDB

MySQL

Elasticsearch

InfluxDB

TimescaleDB

Job description

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.

Qualifications

• 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.
• 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.
• 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.
• 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.