Apu Das Gupta Email & Phone Number

Bangladesh

● Designed and developed Java-based applications, utilizing the Spring Framework forbuilding scalable and maintainable solutions.● Implemented Hibernate ORM (Object-Relational Mapping) for efficient and seamlessinteraction with relational databases, improving data access and retrieval performance.● Led the design and implementation of microservices architecture for SMS Gateway withReseller Platform, resulting in improved scalability and maintainability.● Developed and maintained RESTful APIs using Spring Boot for communication betweenmicroservices, ensuring seamless integration and data flow.● Documented APIs using Swagger/OpenAPI standards, facilitating clear communication andintegration with external teams.● Developed message producers and consumers in Java using RabbitMQ libraries, ensuringreliable message delivery .● Integrated Redis for real-time data storage and caching, optimizing the performance oflocation tracking and request handling within the application.● Implemented Docker containers for packaging and deploying microservices, optimizingresource utilization.● Implemented Jenkins pipelines to automate the build and testing processes, reducingdeployment time .● Configured Nginx for HTTP Load Balancing across multiple application instances foroptimizing resource utilization, maximizing throughput,reducing latency and ensuring faulttolerance.● Performed Unit testing of applications by developing and applying test cases in JUnit.● Contributed to code review of other junior team members.● Collaborated with cross-functional teams to optimize CI/CD pipelines and enhance overalldevelopment efficiency.

Germany

● Contributed to the development and maintenance of the banking software by adding newfeatures and updating existing functionalities using Java Spring Boot.● Developed a new module for the system, which integrated seamlessly with the existingarchitecture, enhancing the software's capabilities.● Performed unit testing using JUnit, ensuring that the new features and modules werethoroughly tested and met the required quality standards.● Conducted code reviews of other team members' work, providing feedback to improve codequality and maintain consistency across the project.● Managed code deployment using Jenkins, automating the build and deployment processesto ensure smooth and reliable software releases.● Actively participated in daily Scrum meetings, collaborating with other team members todefine roadmaps, set priorities for new features, and address any challenges or blockers

Bangladesh

● Designed, developed, and maintained complex web applications using Java and relatedframeworks such as Spring and J2EE.● Implemented RESTful and SOAP web services to facilitate communication between systemsand ensure seamless integration.● Utilized Spring Boot for creating microservices, enhancing application modularity andscalability.● Developed and maintained robust database solutions using PostgreSQL and MySQL,ensuring data integrity and performance optimization.● Integrated RabbitMQ for messaging and asynchronous communication betweenmicroservices, improving system efficiency and reliability.● Collaborated with cross-functional teams to gather requirements, design solutions, andimplement features in a fast-paced Agile environment.● Conducted code reviews and provided mentorship to junior developers, fostering a cultureof continuous learning and improvement.● Implemented automated testing frameworks (JUnit, Mockito) to ensure code quality andreduce bugs in production.● Utilized Docker for containerization , streamlining the deployment process and improvingscalability.● Employed version control systems (Git) and CI/CD pipelines to manage code changes andautomate the deployment process.● Analyzed and resolved complex technical issues, providing support and troubleshooting forproduction systems.● Spearheaded the migration of a monolithic application to a microservices architecture,resulting in increase in system performance and reduction in downtime.● Optimized database queries and indexing strategies, reducing query execution time by 40%and improving overall application performance.

Chittagong, Bangladesh

● Created REST API to provide market data and client information for third party brokeragehouses.● Developed a Market Data Information System using Java REST API to deliver market dataand client information for third party brokerage houses.● Designed and developed a Graph Generation System using backend Java programs, enablingusers to generate various types of stock charts, including Price, Volume, Line, Bar, andCandlestick charts, integrated with the central trading software.● Planned, tested, and implemented various web based applications using Java, J2EE, SpringFramework, and Hibernate.● Developed a Web Application for Market Data Information using Spring Framework andApache Tomcat.● Developed and maintained a web application for an eLibrary system.● Actively participated in daily Start of Day (SOD) and End of Day (EOD) operations andmaintenance of the central trading platform.● Regularly backed up in house developed database systems and archived database scriptsand source code for all software program versions.● Ensured backend operations were executed according to the latest check off sheets and dailysettlement processing was completed after trades.● Designed, coded, and debugged software programs.● Modified existing software to correct errors, adapt to new/existing systems, or improveperformance.● Maintained system operations by detecting and correcting software defects.● Created and updated check off sheets for backend operations as needed.● Created technical specifications, documentation, and user manuals.● Maintained documentation for all irregular and ad hoc work done on the system asreference materials for future use.● Ensured settlement reports were published in members’ web folders on time.● Created documentation for all irregular works done to the system as reference materials forfuture use if the same work needs to be done again

Chittagong, Bangladesh

● Upgraded and fixed bugs in Java RMI-based ERP software according to SoftwareRequirement Specifications (SRS).● Troubleshooted and resolved issues in existing products.● Analyzed, designed, and developed new software applications and components.● Enhanced and maintained existing software products.● Designed front-end graphical user interfaces using Java Swing.● Wrote SQL queries based on program requirements.● Created and modified database reports according to user requirements.● Wrote and maintained program documentation.● Reviewed project plans to coordinate and plan project activities.● Gathered customer requirements and managed system backups.● Assigned tasks and reviewed the work of programmers.● Created and executed test scripts.● Analyzed test results to ensure new software integrations met system requirements.● Provided training to the system support team.● Performed implementation tasks and installed various system software and packages.

Bangladesh

● Designed, developed and maintained core java application for Call Detail Record (CDR)system to fetch data from remote server and also developed web application with dynamicreporting feature.● Designed, developed and maintained Java web application for Customer Support TicketSystem to make sure every issue gets resolved with a powerful ticketing system

Bangladesh

● Actively participated in developing Database Synchronizing Platform.● Build core Java programs to synchronize data among various databases like: Oracle, MySQL,PostgreSQL, DB2 etcTwo