Responsibilities

• Development: Successfully created the BBOCW application, utilizing Java 8 for the backend and leveraging Angular 16 Version for the frontend dynamic content delivery.
• Client Location Visit: Visited Client Place which is located at Patna, Bihar for the requirement of getting knowledge for the project of the client end project manager.
• Development at Client Location: Stayed at client Location More than 20+ Days at initial stage of project development and returned back to Chennai office location and completed the remaining requirement.
• Leading and Contribution: For this project Total members were 8, TeamLead and 2 Contributing Resources and I'm one of the Resource. I've led the team for some specific modules which are those masters for this project.

• • Profile Update Module Development: Created a robust profile update system comprising to manage five PostgreSQL temporary tables, leveraging Angular 16 for dynamic frontend forms, client-side validation, and UI components like pagination (with lazy loading for optimized data retrieval), advanced search with regex-based filtering, and simulated progress bars during asynchronous API calls to enhance user experience.
  • Form Handling and Validation: Developed reactive forms using Angular’s FormBuilder with custom validators, including Aadhaar verification via the Verhoeff algorithm, relationship-based age restrictions (e.g., ensuring parent age ≥ worker age + 16), and regex patterns for fields like PAN and mobile numbers. Implemented multilingual support with i18n for English/Hindi translations, dynamically enabling/disabling fields (e.g., address copy checkbox, OTP input based on verification status), and real-time form state management using RxJS observables for seamless user interaction.
  • Approval Workflow Integration: Built officer-side components (e.g., UpdateListComponent, ApprovalDashboardComponent) using Angular 16 with HTTP query params for filtering drafts by flow status, user ID, or custom criteria, and user-side submission forms with SweetAlert2 for confirmation dialogs. Integrated error handling for API responses, displaying contextual error messages (e.g., invalid Aadhaar or missing mandatory fields) and success notifications, ensuring a responsive and intuitive approval process.
  • File Upload and Management Enhancements: Enhanced file upload functionality to support secure uploads of images/PDFs (e.g., Aadhaar, certificates) with client-side validation for file size (max 5MB), type (JPEG/PNG/PDF), and integrity checks. Implemented Angular-based preview/removal logic with FileReader API, secure URL generation using environment-configured prefixes, and drag-and-drop interfaces for improved usability, integrated with backend storage via Spring Boot multipart file handling.
  • Dynamic UI and User Experience: Engineered advanced UI features, including simulated loading progress with RxJS timers, OTP resend functionality with a 15-second cooldown using Angular’s setInterval, and dynamic date calculations (e.g., computing age from birth dates, validating work periods against predefined ranges). Added nominee percentage validations (sum ≤ 100% across family members) with real-time feedback using Angular’s FormArray, and incorporated accessibility features like ARIA labels and keyboard navigation for inclusivity.
  • Module Leadership and Collaboration: Led a team of 8 developers in delivering key sub-modules (family members, nominees, employment details), coordinating frontend-backend integration via Spring Boot REST APIs. Managed version control with Git, using feature branches, pull requests, and CI/CD pipelines (e.g., Jenkins) for seamless collaboration, code reviews, and deployment. Ensured alignment with project requirements through regular client syncs in Patna.
  • Backend API Development: Designed and implemented RESTful controllers in Spring Boot (e.g., /draft/generalInfoSave, /draft/familyMembersSave) for CRUD operations across five modules, utilizing Spring MVC annotations (@PostMapping, @GetMapping) and request/response DTOs for structured data exchange. Integrated Eureka for service discovery to handle microservices communication in a distributed architecture.
  • Service Layer Implementation: Developed service classes with @Transactional annotations for business logic, managing data persistence to PostgreSQL draft tables via JPA repositories. Implemented flow status code management ("1" for pending, "7" for approved, "9" for rejected, "0" for inactive), with audit trails capturing IP addresses, timestamps, and user actions using a Remarks entity, ensuring traceability and compliance with government audit requirements.
  • Validation and Error Handling: Integrated Spring’s BindingResult with custom Validator classes for server-side validation, enforcing constraints like unique Aadhaar numbers, valid date formats, and multilingual field consistency (English/Hindi). Created response beans (e.g., ResponseDTO) for standardized API responses, handling success, validation errors, and server failures with HTTP status codes (200, 400, 500) and localized error messages.
  • Pagination and Search Features: Implemented Spring Data JPA pageable queries (e.g., findByUserIdAndFlowStatusCodeIn) for efficient draft listing, supporting sorting (e.g., descending by ID), filtering by flow status or user ID, and dynamic searches by applicant name or Aadhaar using LIKE queries with parameterized inputs for SQL injection prevention. Optimized performance with indexed columns and query hints for large datasets.
  • Approval and Workflow Logic: Engineered a sophisticated approval workflow where user-submitted data is stored in temporary draft tables (e.g., WorkersGeneralInfoDraft), listed by flow status codes for officer review, and processed for approval. Implemented methods like updateByIdForUserDetails to transition statuses (e.g., "1" to "7" for approval, "9" for rejection), with remarks logged via a RemarksService for transparency. Ensured data consistency by synchronizing approved drafts to main tables (e.g., WorkersGeneralInfo) and marking rejected drafts as inactive ("0") in the draft table.
  • Single-Click Multi-Table Approval: Developed a single-click approval mechanism via a unified endpoint (e.g., /draft/approveAll) that processes all five draft tables (General Info, Other Info, Family Members, Employment Details, Nominees) in a single transaction. Used @Transactional to ensure atomicity, copying validated data from drafts to main tables upon approval, rolling back on any failure to prevent partial updates. Integrated frontend support with a single "Approve All" button in the officer dashboard, triggering a bulk API call with SweetAlert2 confirmation and real-time status updates via WebSocket notifications.
  • Draft-Based Workflow Management: Designed a temporary draft system where user inputs are stored in draft tables before approval, isolating changes to prevent direct updates to main tables. Implemented flow status tracking ("1" for pending submission, "7" for approved, "9" for rejected, "0" for inactive) with JPA queries to filter and display drafts in officer dashboards. Automated data cleanup for inactive drafts using scheduled Spring Batch jobs to optimize database performance.
  • Transactional Data Synchronization: Ensured ACID compliance during approvals using @Transactional, where approved drafts update main tables via batch inserts/updates (e.g., copying fields like name, Aadhaar, address), while rejected drafts remain in draft tables with status "0". Integrated audit logging with Remarks entity, capturing officer remarks, IP addresses, and timestamps for each state transition, ensuring traceability for government compliance.
  • Depth in Validation and Constraints: Enhanced backend validations for complex rules, such as nominee percentage sums (≤ 100%) calculated across family members using aggregate queries, relationship-based constraints (e.g., ensuring spouse age aligns with marriage dates), and uniqueness checks for Aadhaar/license numbers using JPA’s @UniqueConstraint. Added frontend validation feedback with Angular’s FormControl states, syncing with backend error responses for a cohesive user experience.
  • Audit and Logging Integration: Built a comprehensive audit system capturing every draft save, update, and approval action, storing IP addresses, timestamps, and officer remarks in a Remarks table. Implemented logging with Log4j2 for debugging and monitoring, and integrated Spring Actuator for real-time endpoint health checks and metrics, ensuring system reliability and audit compliance.
  • Module-Specific Enhancements: Handled specialized logic, including nominee percentage validations (preventing >100% totals using JPA aggregate functions), date conversions for work periods/birth dates with Joda-Time, and dynamic mappings for relationships/gender from master tables. Excluded obsolete bank module to streamline workflows, optimizing performance by reducing unnecessary database operations.