Praharsha K

• Designed and built scalable, customer-facing web applications using Java, Spring Boot, React, and TypeScript, improving platform responsiveness and reducing page load times by over 30% through optimized API integrations.
• Led the migration of monolithic banking services to a microservices architecture, implementing authentication, entitlement enforcement, audit logging, and secure data flows across distributed financial systems.
• Developed REST and event-driven APIs using Spring Boot, Kafka, and AWS Lambda, enabling high-volume transaction processing with consistent sub-200 ms response times in production workloads.
• Improved fraud-detection workflows by implementing asynchronous processing pipelines, leveraging Kafka Streams, reducing alert processing delays, and improving system throughput under peak customer activity.
• Integrated CI/CD automation using Jenkins, GitHub Actions, and Docker, enabling zero-downtime deployments and rolling updates while ensuring code-quality checks and unit test coverage thresholds.
• Enhanced internal account-servicing dashboards with React, Redux, and Material UI, enabling faster reconciliation workflows and improved user navigation through optimized state management.
• Designed relational data models and optimized queries in PostgreSQL, eliminating redundant lookups, and improving financial transaction retrieval performance for high-traffic endpoints.
• Implemented secure authentication flows using OAuth2 and JWT, strengthening customer login security, and reducing session-related production incidents across multiple banking portals.
• Built automated integration test suites using JUnit, Mockito, and Cypress, increasing regression coverage and reducing manual QA dependency for recurring release cycles.
• Conducted performance debugging using JMeter, Splunk, and AppDynamics, identifying memory leaks and slow-running endpoints, resulting in 40% faster API response times during system load testing.
• Collaborated with fraud, payments, and credit-platform teams to align API contracts, ensuring consistent data schemas and reliable upstream/downstream interactions across enterprise systems.
• Modernized legacy front-end features by replacing outdated JavaScript modules with React Hooks, improving code maintainability, and reducing bundle size across customer dashboards.
• Built reusable micro-frontends to streamline the deployment of banking UI components, improving cross-application consistency, and reducing duplication across multiple internal product teams.
• Created detailed architectural diagrams, ER models, and API specifications to support enterprise-scale modernization initiatives, and onboarding of new engineering teams.
• Troubleshot production issues through deep log analysis, root-cause identification, and implementation of permanent fixes to maintain compliance and reliability standards across digital banking systems.

Environment: Java, Spring Boot, React, TypeScript, PostgreSQL, Kafka, Kafka Streams, AWS Lambda, Docker, Jenkins, GitHub Actions, OAuth2, JWT, JMeter, Splunk, AppDynamics, JUnit, Mockito, Cypress, Microservices, Micro-frontends

• Built and maintained airline operational applications using Java, Spring MVC, and Angular, supporting real-time flight, crew, and passenger data synchronization across multiple internal platforms.
• Developed microservices for seat assignment, check-in logic, and luggage tracking operations, ensuring consistent data accuracy across high-traffic travel systems used by airport staff.
• Improved ticket-pricing and fare-availability APIs by refactoring caching logic, reducing stale data issues, and improving search latency for customer booking workflows.
• Designed Angular components for airport operations dashboards, enabling ground staff to quickly visualize delays, gate changes, and passenger queues using optimized data polling techniques.
• Built REST services for crew-scheduling workflows using Spring Boot and Oracle, handling rule validation, shift conflicts, and real-time schedule updates.
• Optimized PL/SQL queries and indexing strategies for operational databases, reducing flight lookup times from several seconds to sub-600 ms during peak travel periods.
• Integrated third-party airline systems for baggage handling and flight movement data, ensuring consistent communication and error-resilient message processing across internal services.
• Implemented robust exception handling, input validation, and request-throttling mechanisms, improving system reliability for mission-critical airline operations under heavy load.
• Created Jenkins pipelines for automated builds, code scans, test execution, and deployment verification, enabling predictable and stable release cycles.
• Instrumented backend services with Splunk and Dynatrace, enabling fast root-cause diagnosis for flight disruption and system latency incidents.
• Delivered UI improvements to customer-service tools, increasing efficiency for call-center agents by optimizing search workflows, and reducing unnecessary validation steps.
• Collaborated with QA to convert manual regression cases into automated API tests using Postman and Newman, reducing release turnaround times for flight operations services.
• Refactored legacy SOAP services into modern REST endpoints, simplifying integration, and enabling easier maintainability for evolving business requirements.
• Participated in cross-team design reviews to ensure system compatibility with booking, loyalty, and airport operations engineering groups.
• Documented service flows, error-handling patterns, and database schemas to improve continuity and support new developers onboarding into airline enterprise systems.

Environment: Java, Spring MVC, Spring Boot, Angular, Oracle, PL/SQL, REST APIs, SOAP, Jenkins, Postman, Newman, Dynatrace, Splunk, Microservices, Caching, Airline Operational Systems

• Developed dealership and manufacturing applications using Java, Spring MVC, JavaScript, and AngularJS, supporting inventory, order tracking, and maintenance scheduling workflows across regional Toyota networks.
• Built REST APIs for VIN decoding, vehicle spec retrieval, warranty validation, and service history lookups, enabling accurate data access for dealership systems.
• Designed AngularJS modules for dealer dashboards, enabling real-time vehicle tracking and streamlined workflows for sales and service departments.
• Implemented business rules for maintenance schedules using Spring Services, ensuring accurate alerts and recommendations for customer service teams.
• Developed inventory sync microservices, integrating with manufacturing databases, ensuring accurate stock availability, and reducing data mismatches across dealerships.
• Optimized Oracle queries and indexing strategies, improving vehicle lookup and service record retrieval times across multiple dealership applications.
• Integrated vehicle telematics data ingestion features using REST and scheduled batch processes, supporting downstream analytics, and reporting systems.
• Improved UI load times by refactoring legacy jQuery and AngularJS modules, reducing unnecessary DOM operations, and optimizing data-binding performance.
• Implemented secure user-authentication workflows using Spring Security, ensuring appropriate role-based access for sales, technicians, and administrators.
• Designed automated unit and integration tests using JUnit and Mockito, ensuring consistent test coverage before deployment to regional dealership systems.
• Collaborated with DevOps to deploy applications using Jenkins and Docker, achieving stable and repeatable builds across QA, UAT, and production environments.
• Enhanced error logging and monitoring using Splunk, enabling easier traceability for issues in dealership transaction flows.
• Integrated external vehicle-spec APIs from third parties to provide enriched data for dealership sales tools.
• Supported the modernization of legacy modules by breaking monolithic logic into reusable backend components, following clean-architecture principles.

Environment: Java, Spring MVC, AngularJS, JavaScript, Oracle, REST APIs, jQuery, Jenkins, Docker, Spring Security, JUnit, Mockito, SQL Optimization, Dealership, and Manufacturing Systems.