Java Developer

1 week ago

Singapore Cognizioni IT Solutions LLC Full time

**Java Developer**
**Location: Singapore**
**Full Time**

Key Responsibilities

Optimize Java-based APIs and Kafka consumers to handle large-scale consent and preference traffic.

Enhance MongoDB sharding and indexing strategies for high-throughput read/write operations.

Improve performance and reliability of batch and real-time ingestion workflows.

Fine-tune Kubernetes pods, clusters, and autoscaling policies for better resource utilization.

Implement and enhance observability, including monitoring, alerting, and logging (e.g., Prometheus, Grafana, ELK, OpenTelemetry).

Drive root cause analysis and performance tuning across services and infrastructure.

Collaborate closely with DevOps, SRE, and Architects to ensure end-to-end system health.

**Required Skills**:
Expert-level Java with Spring Boot in scalable microservice environments.

Proven experience with Kafka, including tuning consumers, partitioning, throughput control.

Advanced MongoDB knowledge, especially with sharding, indexing, and high-volume read optimization.

Solid understanding of API performance optimization (caching, pagination, thread tuning, etc.).

Strong experience with Kubernetes and container-based deployments in production.

**Job Types**: Permanent, Contract
Contract length: 12 months

Pay: $3,965.08 - $10,222.59 per month

Schedule:

- Day shift
- Monday to Friday

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