Toheen Bhuiyan
Lead Senior Java Engineer @The Hartford
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WORK HISTORY
Lead Senior Java Engineer @The Hartford
Led migration of the Group Benefits project from Java 11 to Java 21 with a team of 13, implementing TDD with JUnit and Mockito, boosting code coverage by 87% and reducing production defects by 75%. Redesigned secure REST APIs using Spring Boot and Spring Security with OAuth 2.0, cutting deployment time by 60% for complex Group Disability configurations. Accomplished SQL Server to PostgreSQL migration, restructured schemas, integrated FDW for legacy systems, and improved query performance by 70% using advanced SQL tools. Directed enterprise workload migration from Azure to AWS, optimizing cloud architecture and increasing application performance by 25% for Group Retiree Health solutions. Integrated Kafka with Kubernetes for real-time event-driven services, achieving 99.99% uptime and enabling automated scaling for high availability. Collaborated closely with stakeholders, BAs, and QA teams in Agile sprints while developing robust Java applications, ensuring clear requirements, faster feedback loops, and successful on-time delivery.
EDUCATION
Gannon University
Master of Science - MS
Daffodil International University-DIU
Bachelor's degree
ABOUT TOHEEN BHUIYAN
Leveraging my skills to enhance the quality of the target application along with…
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