Tomcat, Ibm Datapower, Prometheus, Spring Boot, Elk Stack, Grafana, Datadog, Terraform, Agile, Connect Direct, Python, AWS, Java, Ibm Mq, Jboss, Hazelcast, SSL, Apache, Gcp, Ansible, Sqs, Azure, observability and performance optimization techniques, Go, Flink, containerized micro-services architecture, monitoring and logging systems, distributed systems design, infrastructure-as-code tools, high-performance applications