March 2026 monthly work summary focusing on security enhancements through bearer-token authentication for Sentinel and Transaction API calls across MetaMask extension and mobile apps. Implemented token-based authentication with header injection for sensitive transaction submissions, while maintaining backward-compatible behavior for unauthenticated flows. Coordinated changes with Smart Transactions and Sentinel components and updated tests to validate token-present and token-absent scenarios.

January 2026 — MetaMask Mobile: Sentinel API Data Fetching Performance Enhancement. Implemented caching and deduplication for Sentinel API calls to reduce redundant network requests and improve performance. The change is tracked in commit 7b7c23f0ab1444586fd51d1f47b5a84f468c4b39 with message 'fix: sentinel nework caching (#23429)'. Impact: smoother user experience, lower network load, and more reliable data fetch path; sets foundation for further optimizations. Technologies/skills demonstrated: caching, deduplication, API optimization, performance tuning.

Month: 2025-11 — Focused on stabilizing smart transaction UX, validating chain-id handling, and hardening hardware-wallet bridging for a smoother end-user experience. Delivered targeted fixes and UI tweaks that improve accuracy, clarity, and readiness for subsequent transactions.