‣ Developed server-side applications using Node.js and Enigma.js to integrate with the Qlik Sense Engine API, enabling the retrieval, manipulation, and visualization of Qlik Sense data within custom web interfaces and enhancing real-time data interactivity for end-users.

‣ Designed and implemented Python-based migration tools to facilitate the seamless transfer of large datasets from legacy systems to a microservices-based architecture, ensuring minimal downtime, maintaining data consistency, and optimizing the integration process between systems.

‣ Architected and deployed microservices-based APIs using Spring Boot, leveraging best practices for scalability, security, and performance. Implemented optimized database handling strategies to support high-frequency data queries, ensuring efficient data processing and minimal latency in distributed systems.

‣ Refactored the Spring Boot backend to support secure, efficient authentication and custom email workflows, implementing custom Lambda triggers to bypass default Cognito email behavior and invoke existing backend email functions, enhancing control over MFA and user management processes.

‣ Leveraged AWS services including Cognito, Lambda, and KMS to implement robust MFA, migrate users to MFA, enforce password policies, and build custom email workflows, utilizing KMS for encryption and decryption of sensitive data, ensuring secure integration with existing backend systems.