"The telecom industry is rapidly evolving with 5G and cloud\u2011native services, making Java expertise combined with domain knowledge more valuable than ever. Companies are seeking seasoned developers who can build scalable microservices and handle massive data streams. This Java Developer role offers a chance to apply deep telecom experience in a cutting\u2011edge environment.\n\n# Job Summary\nWe are looking for a senior Java Engineer with 10+ years of hands\u2011on development experience, strong proficiency in Spring Boot, microservices, and NoSQL (Cassandra, Redis). The candidate must have at least 7 years in the telecom sector, be comfortable designing RESTful APIs, implementing event\u2011driven architectures with Kafka, and deploying solutions on Azure using CI/CD pipelines, Docker, and Kubernetes.\n\n# Top 3 Critical Skills Table\n| Skill | Why it's critical | Mastery Level |\n|---|---|---|\n| Java | Core language for all backend services and performance tuning | Senior |\n| Spring Boot | Enables rapid microservice development and RESTful API creation | Senior |\n| Telecom Domain Knowledge | Provides insight into telecom protocols, billing, and network operations | Senior |\n\n# Interview Preparation\n1. **Explain how you would design a microservice that ingests high\u2011volume call detail records using Kafka and stores them in Cassandra.**\n *What the interviewer is looking for:* Understanding of event\u2011driven architecture, partitioning strategy, data modeling in Cassandra, and scalability considerations.\n2. **Describe a caching strategy using Redis for a telecom rating engine.**\n *What the interviewer is looking for:* Knowledge of cache invalidation, TTL settings, read\u2011through/write\u2011through patterns, and impact on latency.\n3. **Walk through the steps to set up CI/CD pipelines on Azure for a Spring Boot application with Docker and Kubernetes.**\n *What the interviewer is looking for:* Familiarity with Azure DevOps, Jenkins, Dockerfile optimization, Helm charts, and zero\u2011downtime deployments.\n4. **How do you profile and tune a Java microservice for low latency under heavy load?**\n *What the interviewer is looking for:* Experience with JVM tuning, GC options, thread pools, and tools like Dynatrace or ELK for monitoring.\n5. **What are the key differences between using Cassandra and a traditional relational database for telecom data?**\n *What the interviewer is looking for:* Insight into data modeling, eventual consistency, write scalability, and query patterns specific to telecom workloads.\n\n# Resume Optimization\n- Java\n- Spring Boot\n- Microservices\n- Cassandra\n- Kafka\n- Redis\n- RESTful Web Services\n- Azure Cloud\n- CI/CD (Jenkins, Docker, Kubernetes)\n- Telecom Domain\n\n# Application Strategy\nWhen reaching out to the recruiter, send a concise email that starts with a friendly greeting, attaches your updated resume, and clearly highlights your top relevant skills. Make sure to mention related skills you possess, such as Java, Spring Boot, and Telecom domain experience, and reference specific projects where you used microservices, Kafka, or Cassandra. Align your achievements with the responsibilities listed in the job description to demonstrate immediate value.\n\n# Career Roadmap\n| Current Role | Typical Experience | Core Focus | Next Position |\n|---|---|---|---|\n| Java Developer (Telecom) | 10+ years in Java, Spring Boot, telecom | Microservices, performance, cloud native | Lead Engineer / Architecture Manager |\n| Lead Engineer | 3\u20135 years leading teams, designing large\u2011scale systems | System architecture, cross\u2011team collaboration | Engineering Manager |\n| Engineering Manager | 5+ years managing multiple squads, strategic planning | Product strategy, budgeting, stakeholder alignment | Director of Engineering |\n"