Apu Das Gupta

Experience

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  Jay Jay Mills (Bangladesh) Private Limited

  May 2010 - Feb 2011

  Software Engineer

  ● Upgraded and fixed bugs in Java RMI-based ERP software according to Software Requirement 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. Show less

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  Chittagong Stock Exchange Limited

  Mar 2011 - Dec 2014

  Senior Officer - Software Development & Maintanence

  ● Created REST API to provide market data and client information for third party brokerage houses.● Developed a Market Data Information System using Java REST API to deliver market data and client information for third party brokerage houses.● Designed and developed a Graph Generation System using backend Java programs, enabling users to generate various types of stock charts, including Price, Volume, Line, Bar, and Candlestick charts, integrated with the central trading software.● Planned, tested, and implemented various web based applications using Java, J2EE, Spring Framework, and Hibernate.● Developed a Web Application for Market Data Information using Spring Framework and Apache 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 and maintenance of the central trading platform.● Regularly backed up in house developed database systems and archived database scripts and source code for all software program versions.● Ensured backend operations were executed according to the latest check off sheets and daily settlement processing was completed after trades.● Designed, coded, and debugged software programs.● Modified existing software to correct errors, adapt to new/existing systems, or improve performance.● 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 as reference 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 for future use if the same work needs to be done again. Show less

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  MaxWell Services Ltd.

  Aug 2014 - Feb 2016

  Senior Software Development Engineer

  ● Designed, developed, and maintained complex web applications using Java and related frameworks such as Spring and J2EE.● Implemented RESTful and SOAP web services to facilitate communication between systems and ensure seamless integration.● Utilized Spring Boot for creating microservices, enhancing application modularity and scalability.● Developed and maintained robust database solutions using PostgreSQL and MySQL, ensuring data integrity and performance optimization.● Integrated RabbitMQ for messaging and asynchronous communication between microservices, improving system efficiency and reliability.● Collaborated with cross-functional teams to gather requirements, design solutions, and implement features in a fast-paced Agile environment.● Conducted code reviews and provided mentorship to junior developers, fostering a culture of continuous learning and improvement.● Implemented automated testing frameworks (JUnit, Mockito) to ensure code quality and reduce bugs in production.● Utilized Docker for containerization , streamlining the deployment process and improving scalability.● Employed version control systems (Git) and CI/CD pipelines to manage code changes and automate the deployment process.● Analyzed and resolved complex technical issues, providing support and troubleshooting for production 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. Show less

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  Intelligent Automation Technology Ltd.

  Mar 2016 - now

  Senior Software Engineer

  ● 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 .● 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 Show less