Shayan Jabbarzadeh

Built applications using NestJS and maintained projects involving NestJS and Angular. Integrated Keycloak for Identity and Access Management (IAM) and Single Sign-On (SSO) solutions across multiple admin panels. Developed comprehensive unit and integration tests with Jest and Mocha, boosting test coverage from 20% to 70%.

Led the development and architectural design of scalable backend services with over 11 microservices using NestJS to support high-volume financial transactions. Created an orchestrator service with the SAGA pattern utilizing Kafka to streamline financial operations across multiple services. Implemented Identity and Access Management (IAM) security protocols for authentication and authorization across microservices. Managed containerized deployment with Docker and Kubernetes ensuring consistent operation. Initiated the project and led a technical team consisting of project managers, DevOps, frontend, and backend developers while collaborating with various cross-functional teams to provide integrated services.

Developed a production-ready application called Safes Parental Control using NestJS and MongoDB. Introduced GraphQL for enhanced API integration and implemented MongoDB indexing strategies to speed up queries by 30%. Established advanced notification centers and deployed real-time communication with WebSockets and Firebase. Maintained over 85% test coverage across core modules, reducing production issues. Led a security testing project with a core team and designed APIs while building robust backend applications leveraging Redis, MongoDB, and SQL databases.