Worked on the ONSdigital/blaise-deploy-questionnaire-service repository, delivering a critical dependency upgrade that transitioned the Blaise API client and IAP provider from version 1.x to 2.x. This update, implemented using JavaScript and Node.js, focused on enhancing performance, security, and compatibility with newer Node.js environments. The approach included updating Babel and related packages to align with current standards, ensuring the codebase remains maintainable and future-proof. Validation steps were taken to confirm the upgrade path did not disrupt existing deployments. No major bugs were addressed during this period, with efforts concentrated on reducing technical debt through proactive dependency management.