Senior Java Backend/Microservices Engineer - Telecom
VSG Business Solutions LLC
Job Description:
Must Have
- Java 17+ (ideally 21 with virtual threads experience)
- Spring Boot - dependency injection, auto-configuration, profiles
- Apache Kafka - producers, consumers, consumer groups, offset management, SASL/SSL
- Redis - data structures (hashes, lists), connection pooling, pub/sub patterns
- Kubernetes - pods, services, ConfigMaps, deployments, debugging with kubectl
- REST API design - Spring MVC controllers, OpenAPI/Swagger
Strong Plus
- Cassandra - data modeling (partition keys, clustering), CQL, TimeWindowCompaction
- Elasticsearch/OpenSearch - indexing, queries, mapping
- Protocol Buffers - schema definition, serialization/deserialization
- Helm charts - templating, values, chart dependencies
- AWS - MSK, Secrets Manager, EKS, IAM roles for service accounts
- WebSocket - long-lived connections, binary frames, STOMP protocol
Highly Desirable
- Development experience in cloud-based telecom CPE management, telemetry, and service orchestration
Nice to Have
- GraalJS / polyglot JVM experience
- Kafka Connect, schema registries
- Performance tuning at scale (GC tuning, thread pools, connection pools)
Vacancy posted 1 day ago
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