Vianney Tagu

Designed and implemented new banking and functional features for enterprise applications automating key business processes across portfolio management, risk management, transaction monitoring, and customer account management. Delivered clean, maintainable, scalable, high-quality solutions using Java and Spring Boot with RESTful APIs, microservices, and SOA-based architecture. Built and supported enterprise systems including database integrations and API/interface development. Collaborated with business analysts, architects, testers, and compliance teams, participating in software design and code reviews to ensure best practices. Contributed to SOA architecture implementation, applied security enhancements, and optimized application performance. Provided L3 production support for critical banking applications: monitored production environments, investigated and resolved incidents impacting business operations, performed RCA (Root Cause Analysis), and implemented preventive/corrective

Analyzed business requirements and developed software solutions, including designing and developing RESTful web services. Managed Oracle databases and ensured data consistency. Executed functional and technical unit testing, maintained and updated technical documentation, and delivered new business functionalities and system improvements. Investigated, troubleshot, and resolved software defects, participating in Agile development processes. Provided L3 application support for mission-critical HR systems: diagnosed and resolved production issues in Oracle and Java environments, performed root-cause analysis for application failures, monitored batch executions, and ensured operational reliability. Coordinated with business users to resolve incidents and service requests, supported corrective and preventive maintenance, and assisted with software releases and production deployments while ensuring stability, availability, and performance.

Developed backend functionalities on SAP Hybris 6.2 platform. Designed and implemented end-to-end checkout and payment workflows. Integrated multiple payment providers including CyberSource, PayPal, and Carta Sì. Implemented order management business processes using Spring framework integration, configured and optimized Solr indexing to improve product search and category navigation performance. Designed data models and implemented integrations with legacy enterprise systems. Developed order processing workflow, implemented data integration flows for product inventory and pricing synchronization to support fulfillment processes, and built numerous RESTful web services. Performed API testing and performance validation using Postman and SoapUI. Developed scheduled jobs/batch processing to automate business operations and added integration tests using JUnit to improve code coverage. Collaborated with business analysts, QA teams, and stakeholders in an Agile environment. Provided appli