Developed a controlled rollout for the Flexible Multisig Wallet feature in the novasamatech/nova-spektr repository, focusing on frontend development with React using JavaScript and TypeScript. The implementation involved environment-based feature gating, ensuring the new wallet flow remained hidden in production while accessible in development environments. Adjustments to back navigation logic prevented users from exiting the modal when the feature was inactive, enhancing user experience and reducing confusion during staged deployment. This approach improved release readiness and minimized production risk, with strong commit traceability and close collaboration with product, QA, and DevOps teams to support safer, more manageable feature releases.