MATEUSZ WASILUSZKO

Responsible for the maintenance and development of enterprise applications built with Spring Boot and Angular, ensuring performance, scalability, and reliability across the stack.
Acted as a Team Leader, overseeing a cross-functional development team, managing task delegation, mentoring junior developers, and coordinating sprint planning and delivery.
Successfully implemented a microservices architecture, which significantly enhanced system modularity, scalability, and reduced inter-service dependencies, contributing to easier maintenance and independent service deployment

Skills: Spring Boot, Java, Kafka Angular, TypeScript, Microservices, RESTful APIs, Docker, CI/CD pipelines (Jenkins), Git, Jira, IntelliJ IDEA, Postman, Oracle, Redis

Responsible for the maintenance and development of enterprise applications built with Spring Boot and Angular, ensuring performance, scalability, and reliability across the stack.
Worked on applications developed in Java using Spring and Hibernate frameworks, focusing on backend logic, database integration, and ensuring transactional consistency.

Skills: Java, Spring Boot, Microservices, RESTful APIs, Oracle, Docker, Jenkins, Git, Jira, IntelliJ IDEA, Postman

Conducted performance analysis of enterprise applications running on traditional application servers as well as within OpenShift containers.
Performed JVM diagnostics, including in-depth analysis of Garbage Collection behavior, Thread Dumps, and Heap Dumps, identifying memory leaks and performance bottlenecks.
Analyzed database performance, utilizing Oracle AWR and Statspack reports, and conducted system-level monitoring with nmon to assess hardware resource utilization.
Developed, maintained, and enhanced internal applications using Java EE, REST APIs, JDBC, and deployed them on Apache Tomcat.
Designed and implemented data visualization solutions using the ELK stack (Elasticsearch, Logstash, Kibana) for monitoring and troubleshooting.
Performed basic server administration tasks, including environment setup, log analysis, and service management.

Skills: Java EE, Java 8, JDBC, Apache Tomcat, OpenShift, JVM Tools (GC, Heap/Thread Dumps), Oracle AWR, Statspack, nmon, ELK Stack (Elasticsearch, Logstash, Kibana), Oracle, Shell scripts, Linux environment management, internal server maintenance