
Michal Janowicz contributed to the hmrc/ngr-login-register-frontend and hmrc/ngr-property-linking-frontend repositories, focusing on user experience improvements, robust backend validation, and secure authentication flows. He implemented features such as NgrNotify integration for private beta access and enforced minimum file size validation for uploads, using Scala, Typescript, and the Play Framework. Michal refined frontend messaging and simplified user flows, while also introducing idempotent backend actions to prevent duplicate submissions and property linking. His work demonstrated a strong grasp of action composition, repository patterns, and configuration management, resulting in more reliable, user-friendly, and maintainable code across both services.

October 2025: Implemented idempotent flows in hmrc/ngr-property-linking-frontend to prevent duplicate submissions and linking actions. Key work includes: (1) Redirecting to the dashboard when a declaration reference number has already been generated to avoid showing the declaration form to users who completed the process; (2) Introducing PropertyLinkCheckAction to verify existing property linking requests via PropertyLinkingRepo and redirect to the dashboard if a duplicate is detected. These changes improve data integrity, reduce user friction, and align with NGR-2631 objectives. Technologies demonstrated: backend controller adjustments, new action pattern, repository checks, and clear commit traceability (NGR-2631).
October 2025: Implemented idempotent flows in hmrc/ngr-property-linking-frontend to prevent duplicate submissions and linking actions. Key work includes: (1) Redirecting to the dashboard when a declaration reference number has already been generated to avoid showing the declaration form to users who completed the process; (2) Introducing PropertyLinkCheckAction to verify existing property linking requests via PropertyLinkingRepo and redirect to the dashboard if a duplicate is detected. These changes improve data integrity, reduce user friction, and align with NGR-2631 objectives. Technologies demonstrated: backend controller adjustments, new action pattern, repository checks, and clear commit traceability (NGR-2631).
September 2025 highlights two high-value frontend deliveries across two repos, with strong testing and deployment readiness. Key feature: NgrNotify integration for private beta access in hmrc/ngr-login-register-frontend, implemented via a new connector, configured ngr-notify service, and added unit tests; includes stabilizing port configuration and improved error handling to ensure correct deployment behavior. Key feature: 10KB minimum file size enforcement for uploads in hmrc/ngr-property-linking-frontend, updating the UpscanInitiateRequest model and UX messages to provide clear feedback when below threshold. Major fixes and stabilizations include addressing port/config error handling (NGR-2953) and completing code reviews.
September 2025 highlights two high-value frontend deliveries across two repos, with strong testing and deployment readiness. Key feature: NgrNotify integration for private beta access in hmrc/ngr-login-register-frontend, implemented via a new connector, configured ngr-notify service, and added unit tests; includes stabilizing port configuration and improved error handling to ensure correct deployment behavior. Key feature: 10KB minimum file size enforcement for uploads in hmrc/ngr-property-linking-frontend, updating the UpscanInitiateRequest model and UX messages to provide clear feedback when below threshold. Major fixes and stabilizations include addressing port/config error handling (NGR-2953) and completing code reviews.
In July 2025, delivered UX refinements and flow simplifications across two frontend repos, focusing on clarity, consistency, and streamlined user actions. No major defects fixed during the month; efforts were directed at improving user-facing messaging and interaction flow in alignment with product goals (NGR-2149, NGR-2150).
In July 2025, delivered UX refinements and flow simplifications across two frontend repos, focusing on clarity, consistency, and streamlined user actions. No major defects fixed during the month; efforts were directed at improving user-facing messaging and interaction flow in alignment with product goals (NGR-2149, NGR-2150).
Overview of all repositories you've contributed to across your timeline