Debayan Chatterjee
Kolkata
Summary
Java MicroServices Developer with over 5.5 years of experience in Spring Boot applications. Expertise in Data Structures and Algorithms to improve system usability and performance. Proficient in Agile methodologies, especially Scrum, promoting effective collaboration within teams. Knowledgeable in Kafka, MVC Architecture, AWS Lambda, Step Functions, and EC2 deployment.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Senior Software Cloud Engineer
LTI Mindtree
Kolkata
09.2024 - 02.2026
- Present - Developing and maintaining Unitrax Spring Boot APIs for Canadian banking clients using cloud-native architecture. - Designed and deployed services on AWS using Lambda, EC2, Step Functions, and Kafka-based event-driven workflows - Led migration of MuleSoft APIs to native Spring Boot microservices, reducing platform dependency and directly impacting revenue and performance. Integrated Payments and Card Interface for Idempotent Rest APIs to be used by LTI Canada clients. Provided dependable production support, ensuring high availability, incident resolution, and SLA adherence. - Acted as delivery-driven lead, mentoring team members and leveraging modern AI-assisted development practices to improve efficiency and quality.
Software Development Engineer II
Oracle Cerner Healthcare Solutions India Pvt. Ltd.
Kolkata
02.2022 - 09.2024
- Upgrading the Spring framework version for the whole product and rolled out the changes from 4.2.0 to 5.3.29 and spring boot version to 2.7.14 for long term support planning and due to CVE's reported for older versions.
- Developed microservices using Spring Boot to enrich our response API by integrating with third-party healthcare URLs. Leveraged Java, Spring Framework (including Spring Boot, Spring MVC , and RESTful APIs along with Data Structure like Lists, Stacks, Queues, HashMaps and efficient algorithm techniques to ensure seamless data enrichment and synchronization. Designed and implemented end-to-end JUnit test cases to validate functionality and performance, ensuring robust and reliable integration with external healthcare systems.
- Designed and implemented Single Sign-On SSO authorization for specific requirement specific health-care clients, leveraging OAuth 2.0 and OpenID Connect protocols. Used Design Patterns like singleton and prototype patterns, Integrated with Active Directory/LDAP, SAML to ensure seamless user authentication and authorization across web application, enhancing security and user experience.
- Navigated technical challenges during the migration of stored procedures from My SQL Server to Oracle ADB, addressing differences in syntax, data types, and transaction management. Resolved compatibility issues with PL/SQL with the application code for various metadata checks, persistence logics and all ensuring seamless functionality and performance in the new environment.
- Developing a new JVM OnDemand in Soarian Financials Snap Utility Tool to handle load balancing and multithreading. Maintained a complete CI/CD pipeline from the project starting till the end of it's life cycle.
Assistant Software Engineer
Tata Consultancy Services Private Limited
Kolkata
07.2019 - 02.2022
- Involved in development of a web application for a South African insurance company which will enable their agents to do policy issuance and servicing of existing policies using Java 7 and 8, Spring Boot, Collection Framework, Hibernate, JPA, SQL using Agile Scrum Methodology.
- In this digital transformation, my key responsibilities are building Spring Boot microservices using REST API architecture so that users can easily get access to existing policies included in their portfolios.
- Heavily responsible in backend development and maintenance of applications for around 1.5 years, interacting with clients for requirement gathering during backlog grooming.
- Fixed and debugged real time production incidents impacting more than 50 insurance clients during Go Live.
- Worked extensively on JUnit and Mockito framework for writing test cases for unit testing.
Education
Bachelor of Technology -
Institute of Engineering & Management (IEM)
Kolkata07.2019
High school or equivalent -
South Point High School
07.2015
High school or equivalent -
South Point High School
03.2013
Skills
- Java
- Spring/SpringBoot/MVC
- CI/CD pipeline
- Jenkins
- Maven
- Junit
- Kafka
- Hibernate
- JPA
- Oracle ADB
- MySQL
- Python
- Spring
- AWS architecture
- Microservices design
- CI/CD pipeline management
- Agile methodologies
- Performance optimization
Revenue Impact
- Contributed to 9.7 million in revenue with the collaboration of TCS BaNCS in making insurance digitized in South Africa
- Impacted 2 million dollars in company revenue by migrating MuleSoft APIs to Spring Boot APIs seamlessly for clients in production, impacting investment banks in Canada
Accomplishments
- Best Team Player, Awarded the 'Best Team Player' from TCS for completion of a successful phase of the application's development.
- Best Performer, Awarded Best Performer for Q2 and Q4 in FY 23 24 in Oracle Cerner for Kolkata.
- Published Research Paper, Published research paper in International Ethical Hacking Conference, in Springer magazine Proceedings for eHacon-2018.
Certification
- Oracle Certified Foundations Cloud Professional
- Oracle Autonomous Database Associate
- Coursera - Building Scalable Java
- Microservices with Spring Boot and Spring Cloud
- Coursera - Design Patterns
Timeline
Senior Software Cloud Engineer
LTI Mindtree
09.2024 - 02.2026
Software Development Engineer II
Oracle Cerner Healthcare Solutions India Pvt. Ltd.
02.2022 - 09.2024
Assistant Software Engineer
Tata Consultancy Services Private Limited
07.2019 - 02.2022
Bachelor of Technology -
Institute of Engineering & Management (IEM)
High school or equivalent -
South Point High School
High school or equivalent -
South Point High School