Implemented an algorithm to trade option contracts.
Maintained and debugged several microservices of the project which is a trading algorithm system.
Tech stack: Spring Boot, Spring Data, Spring Security, RabbitMQ, Kafka, Micrometer, Oracle Database, Docker, Kubernetes, GitLab CI/CD.
Contributed to development of an ERP system using Spring Framework (Spring Boot, Spring Data, Spring Security, Spring Cloud).
Used JSF (JoinFaces, PrimeFaces) for frontend development.
Worked with JPA/Hibernate ORM and Oracle database.
Created PDF reports with JasperReports and Excel exports with Apache POI.
Contributed primarily to the finance module of the ERP implementing Accrual Accounting.
Implemented a messaging and notification system with Java EE 7 APIs (JPA, EJB, JAX-RS, JSF).
Implemented social media functionalities: mentioning, hashtags, liking, and leaving comments.
Implemented functionalities of an online store.
Worked with Java EE 6 (JPA 2.0, EJB 3.1, JSF 2.2), OmniFaces 2.0, Primefaces 6.1, PrettyFaces 3.3, Apache Shiro, and Maven.
Implemented various multi-threaded and high-performance reports.
Utilized Java SE Reflection and Generics to implement a log engine for customer changes.
Enhanced an old client-side captcha module by implementing a new custom JAAS login module.
Re-implemented a fingerprint security module with Java Web Start.