Senior Java Backend/Microservices Engineer – Telecom

Job Title: Senior Java Backend/Microservices Engineer – Telecom

Work Location: Bay Area, CA (Preferred), Plano, TX

Onsite/Hybrid/Remote: Onsite

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 (tuning, thread pools, connection pools)