Ossama Tekeisham

Experience

1. Software Engineer

   Paychex

   Feb 2025 — Present

   Migrated and upgraded Spring Boot microservices from Java 17 to Java 21, resolving dependency conflicts and leveraging new language features to enhance performance and maintainability- Optimized OpenShift deployment configurations, reducing deployment time and increasing production reliability through streamlined container orchestration and resource tuning- Designed and executed regression, integration, and end-to-end test automation using the Robot Framework (Python) for validating Spring Boot applications deployed to OpenShift containers- Improved CI/CD pipelines by refactoring and updating Jenkinsfile configurations, reducing build times and improving deployment consistency across staging and production environments- Diagnosed and resolved critical dependency conflicts, leading to a 20% reduction in production incidents and significantly improving system stability and uptime- Tech Stack: Java 17–21, Spring Boot, OpenShift, Jenkins, Robot Framework (Python), Maven, CI/CD, Linux

Education

• Suez Canal University

  Bachelor of Science (B.S.), Computer Science

  2007 — 2011

• Maharishi International University

  Master's degree, Computer Science

  2019 — 2021