Summary: Seeking a Backend Developer to build and scale next-generation email and messaging infrastructure, focusing on high-performance distributed systems and cloud platforms. Highlights: 1. Work on high-performance distributed systems and cloud messaging platforms. 2. Contribute to architecture decisions and system design discussions. 3. Engineering-driven culture valuing autonomy and continuous learning. **Backend Developer (Messaging Systems) – Email Infrastructure \& Cloud Messaging** About the Role We are seeking a talented **Backend Developer (Messaging Systems)** to help build and scale next\-generation email and messaging infrastructure at Japan Digital Mail Services. If you enjoy working on **high\-performance distributed systems, email delivery pipelines, and cloud\-based messaging platforms**, this is a chance to work on systems that handle millions of messages reliably and securely every day. You will join a fast\-moving engineering team focused on scalability, uptime, and performance optimization in a modern cloud environment. What You’ll Do * Design, develop, and maintain backend systems for email and messaging delivery * Build scalable APIs and microservices for messaging infrastructure * Optimize system performance, latency, and throughput * Work with distributed systems, queues, and event\-driven architecture * Ensure high reliability, security, and deliverability of email systems * Collaborate with DevOps and frontend teams to improve platform performance * Troubleshoot production issues and implement long\-term fixes * Contribute to architecture decisions and system design discussions What We’re Looking For * Strong experience in backend development (Java, Go, Python, or Node.js) * Experience with messaging systems (SMTP, Kafka, RabbitMQ, or similar) * Knowledge of distributed systems and cloud architecture * Experience with APIs, microservices, and RESTful services * Understanding of databases (SQL and/or NoSQL) * Problem\-solving mindset and strong debugging skills * Ability to work in a collaborative engineering environment Nice to have: * Experience with email delivery systems or SaaS platforms * Cloud experience (AWS, Azure, or GCP) * Knowledge of system observability tools (Prometheus, Grafana, ELK) Why Join Us At Japan Digital Mail Services, we focus on building reliable, scalable messaging systems that power global communication. You’ll work in an engineering\-driven culture where your ideas directly impact system architecture and product performance. We value clean engineering practices, autonomy, and continuous learning. Apply Now If you’re excited about building scalable messaging systems and working on complex backend challenges, we’d love to hear from you. Apply today and join our growing engineering team. Pay: QAR18,000\.00 \- QAR32,000\.00 per month Work Location: In person