Ivan Yannick NGAHA TCHOUMI

Designed and developed a modular web platform (monorepo architecture) for RPN associations (member administration, death claim files, and financial contributions) using Next.js and TypeScript with TurboRepo. Integrated type-safe GraphQL APIs with Apollo and GraphQL Code Generator to ensure end-to-end data reliability. Wrote and maintained unit tests (Jest). Containerized the application (Docker) and deployed via Kubernetes/Helm, with CI/CD pipelines across QA and production using GitHub Actions/GitLab CI. Collaborated in an Agile environment with backend, QA, and Product teams (Git Flow, code reviews, pull requests).

Contributed to reliability, security, and performance of critical banking infrastructure through proactive optimizations and system maintenance. Developed transaction approval workflows with dual-validation logic for shared accounts in the Internet Banking module using React and Redux. Delivered Cash Desk/Teller operations and secure, compliant financial workflows using Next.js. Built and integrated a transfer slip management system to optimize document tracking and data flow. Designed a comprehensive RBAC (role-based access control) user/role management system enforcing security across Internet Banking and Core Banking platforms. Partnered with QA and Product teams to troubleshoot complex defects, contributing to 99.9% stability and improved internal user satisfaction.

Led conversion of the company’s web management platform into a high-performance mobile application using React Native to improve accessibility of services. Developed and maintained backend services with Java Spring Boot and Symfony, including REST API creation, business logic implementation, and secure data processing. Orchestrated migration of relational data from MySQL to PostgreSQL, improving query performance and consistency via indexing and schema optimization. Contributed to a full redesign of the MK-BID platform using React JS and TypeScript. Ensured synchronization between mobile/web frontends and backends while managing API versioning.