Must have . Excellent hands on experience in Core Java 1.8, Spring, Spring Boot, Quartz . Hands on experience with messaging systems such as RabbitMQ and IBM MQ . Strong working experience on Linux Operating Systems (Oracle Linux 7.6) . Experience with Application Servers, preferably IBM WebSphere / Apache . Excellent and proven experience in Oracle SQL and PL/SQL . Strong knowledge and experience in XML, XSL, XSLT . Experience with Hardware Security Modules (HSM) such as Pay Shield 9000 /Shield XC High . Excellent knowledge of communication protocols such as REST, AMQP, JMS . Experience working with DevOps teams and industry standard CI/CD tools including: Jenkins, GitLab, Kubernetes, Docker, Terraform, Ansible, Cloud Formation, Chef CI, GitHub Actions, Scripting using Python, Go, and Bash . Cloud exposure on AWS, Azure, or GCP . Proven experience in supporting large, complex, high availability, high volume applications . Understanding of failover mechanisms and disaster recovery . E...