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Bianca Mihaila

PROFILE

Bianca Mihaila

Bianca Mihaila engineered authentication, security, and user experience features for the govuk-one-login/mobile-android-one-login-app, focusing on robust login flows, secure storage, and accessibility. She integrated technologies such as Kotlin, Jetpack Compose, and Firebase, upgrading core SDKs and implementing certificate pinning, DPoP, and structured error handling to strengthen security and reliability. Her work included deep linking, modularization, and CI/CD automation, ensuring stable releases and streamlined onboarding. Bianca addressed token management, local authentication, and analytics integration, while maintaining high code quality through refactoring and comprehensive testing. Her contributions delivered resilient, maintainable mobile authentication aligned with evolving business and compliance needs.

Overall Statistics

Feature vs Bugs

57%Features

Repository Contributions

483Total
Bugs
108
Commits
483
Features
144
Lines of code
107,281
Activity Months19

Work History

April 2026

2 Commits • 2 Features

Apr 1, 2026

April 2026 – Delivered critical UI compatibility enhancements and foundational dependency upgrades for the govuk-one-login mobile Android app. Key outcomes include ensuring Wallet and CRI Orchestrator UI compatibility via SDK updates, and upgrading the Firebase BOM to enable latest features. These changes improve user experience, reduce compatibility risk, and strengthen release readiness for upcoming milestones.

March 2026

15 Commits • 3 Features

Mar 1, 2026

Month: 2026-03 — The mobile-android-one-login-app delivered core authentication enhancements, reliability fixes, and improved deployment hygiene that together strengthen security, developer productivity, and release reliability. Key features include issuer and wallet ID verification extracted from id tokens, wallet ID exposure in UI, and a new developer debugging UI to view wallet ID. These changes elevate trust in authentication flows and streamline debugging for wallet-related issues. Major bugs fixed: Correct token handling in no-refresh-token scenarios ensured access/refresh token state is saved or removed consistently, with updated tests reducing edge-case risk; robust error logging and wallet SDK checks were added to surface and diagnose unexpected wallet deletions, improving resilience and observability. Overall impact: Increased reliability of authentication and wallet data flows, faster issue diagnosis, and safer release processes. These improvements reduce security risk, improve developer experience, and lower MTTR for wallet-related incidents. Technologies/skills demonstrated: JWT-based field extraction and validation, Kotlin/Android development, secure storage integration, DevOps automation and CI/CD (Sonar, environment variables, secret handling), code quality improvements (linting, Detekt suppression, removal of debug prints), and targeted refactoring to improve maintainability.

February 2026

8 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary for govuk-one-login/mobile-android-one-login-app: Delivered Wallet and User Authentication Enhancements and App Integrity Reliability Improvements with upgrades to the Wallet SDK, SecureStoreAsyncV2 integration, improved session persistence and token handling, and a structured exception hierarchy. Expanded testing coverage and reliability efforts, resulting in more robust sign-in flows and maintainable error handling.

January 2026

39 Commits • 9 Features

Jan 1, 2026

January 2026 monthly summary for govuk-one-login/mobile-android-one-login-app focusing on stability, security, and business value. Key auth improvements shipped, sign-out cleanup completed, re-auth handback issues resolved, and account intervention capabilities added. CI/CD and SDK updates improved release reliability and onboarding for migration to SecureStore/OpenStore. Overall, delivered tangible user-facing improvements and strengthened developer experience.

December 2025

5 Commits • 2 Features

Dec 1, 2025

Month 2025-12: Focused on delivering accessibility improvements and strengthening the mobile Android one-login app's release quality controls. Key features delivered include BiometricsToggleScreen Accessibility Enhancement and CI/CD Quality Gate Manifest & Workflow Improvements. These efforts improved usability for visually impaired users, automated code verification across development stages, and accelerated release readiness. Demonstrated skills in accessibility engineering, CI/CD automation, manifest management, and cross-team collaboration with accessibility and DevOps to deliver business value with lower risk.

November 2025

33 Commits • 10 Features

Nov 1, 2025

November 2025 monthly summary for govuk-one-login/mobile-android-one-login-app. Delivered multiple features, fixes, and CI improvements, driving localization, security, and release stability for the Android mobile experience.

October 2025

26 Commits • 10 Features

Oct 1, 2025

October 2025 focused on reliability, security, and observability for govuk-one-login/mobile-android-one-login-app. Delivered offline stability fixes, strengthened authentication flows with DPoP, added certificate pinning for DVLA integration, improved token persistence with local-auth aware expiry, and enhanced diagnostics by logging AppIntegrity errors to Firebase Crashlytics. These changes reduce user friction in limited connectivity, harden security, and improve operational visibility across the mobile app.

September 2025

45 Commits • 9 Features

Sep 1, 2025

September 2025 monthly performance summary for govuk-one-login/mobile-android-one-login-app. The month focused on stabilizing the login/deeplink flow, modernizing UI, integrating Wallet SDK updates, and tightening the release process. Key features delivered include Wallet deletion error handling, login deeplinking domain support, Wallet SDK upgrades, UI modernization with GdsTopAppBar, and CI/CD improvement to publish Prod only on merge-to-main. Major bugs fixed span linting issues, credential/deeplink handling, secure store token management, and deep-link reliability across app states (including full-app closure and biometrics-disabled scenarios). Overall impact: more reliable user onboarding, stronger token security, and smoother production releases with higher test coverage. Technologies demonstrated: Android/Kotlin, Wallet SDK v2.x, secure store and biometrics handling, deep linking, UI components (GdsTopAppBar), App Bundle/ProGuard readiness, minifyR8, and CI/CD automation.

August 2025

15 Commits • 4 Features

Aug 1, 2025

Month 2025-08 focused on strengthening reliability, security, and user experience for govuk-one-login/mobile-android-one-login-app. Key work included upgrading core dependencies (Wallet SDK to latest stable and authentication library), hardening production network configurations with correct pinning and URLs, implementing testability enhancements for token expiry flow, fixing in-memory deep link handling to prevent stale state, adopting the Design System v2, and adding runtime security checks to detect debuggers in release builds. These efforts reduce re-auth prompts, improve stability and performance, enhance security posture, and align the app with design standards.

July 2025

29 Commits • 8 Features

Jul 1, 2025

Month: 2025-07 — concise monthly summary for govuk-one-login/mobile-android-one-login-app highlighting key features, major fixes, impact, and technologies demonstrated. Key features delivered: - Implemented UI accessibility enhancements with focus colors across all buttons; focus color fix propagated to mobile UI. - Upgraded UI components: replaced all button components with v2. - CI/CD and release automation improvements: updated to enable tag pushes on push to main, added docs triggers, and workflow stabilization; updated CRI Orch to 0.57.4. Major bugs fixed: - Linting issue resolved to improve code quality and CI reliability. - Firebase AppCheck: catch generic errors and added error logging for FirebaseAppCheck. - Login flow: improved error handling to provide clearer failure modes. - Signin accessibility: fixes to ensure accessibility requirements are met. - Various dependency/build tweaks to prevent crashes (attestation checks, ID-Check crash fixes, and versioning publish fixes). Overall impact and accomplishments: - Improved accessibility and user experience, especially for assistive tech users. - Increased release velocity and reliability through CI/CD improvements and stable dependencies. - Reduced crash surface in critical auth flows through improved error handling and SDK compatibility. Technologies/skills demonstrated: - Android UI development (focus states, button components) - Accessibility best practices - Firebase AppCheck integration and logging - Dependency and SDK management (CRI Orch, attestation checks) - Build tooling and CI/CD (GitHub Actions, version publishing, tagging)

June 2025

32 Commits • 8 Features

Jun 1, 2025

June 2025 monthly summary for govuk-one-login/mobile-android-one-login-app focused on stabilizing authentication flows, upgrading core SDKs, and strengthening release automation. Key features delivered include Local Authentication Updates (latest local auth with BioOptIn copy), Wallet SDK and CRI Orchestrator/SDK updates, SignOut screen with GA4 analytics and privacy link enhancement, plus CI/CD and testing improvements. Major bugs fixed encompassed Local Authentication stability fixes (loop, println removal, and view model tests), ID-Check prompt handling, launcher context maintenance, and dynamic deeplink variable handling. The month also delivered test improvements and various string refinements to improve reliability and user experience. Business value and impact: - Hardened authentication UX and reliability reduce user friction and security risks during sign-in/out. - Up-to-date SDKs and orchestrator components enable new features, better performance, and more stable deployments. - Improved analytics and privacy link integrity improve product analytics accuracy and compliance signals for decision-making. - CI/CD enhancements shorten release cycles, improve versioning discipline, and reduce build/test toil, accelerating time-to-market. - Robust launch and deep-link handling reduce crash-free user journeys and improve onboarding stability.

May 2025

54 Commits • 20 Features

May 1, 2025

May 2025 Performance Summary – govuk-one-login/mobile-android-one-login-app Key features delivered: - Welcome Screen Branding and Accessibility Enhancements: Rebranding updates and accessibility improvements for the WelcomeScreen icon. Commits: cdcf3126..., a1716b55... - Cri Orchestrator Update: Upgraded Cri Orchestrator to version 0.42.0. Commit: d7872542... - Backend URLs Environment-Specific Configuration: Environment-specific backend URL configuration to reduce deploy-risk. Commit: d2b8190d... - Wallet/Auth Dependency Upgrade for CI: Updated wallet and auth dependencies to fix pipeline failures. Commit: dd5a2f1c... - UI/UX and Launcher Updates: SplashScreen behavior improvements and app icon assets updated for launcher and Play Store. Commits: 728bbc85..., 10306880..., 0124a9fd... - SignOutScreen Update: SignOutScreen migrated to v2 components/patterns. Commit: 3b344bfd... - Biometrics UI and Analytics: Added biometrics button, opt-in screen, and GA4 analytics for biometrics toggling. Commits: 0788b778..., dcf5eaaf..., aefa0032... - Local Authentication Upgrade: Updated local auth version and usage. Commit: f27ecdfe... - CI Workflow Stability and Deployments: CI workflow stability improvements including temporary bundle handling and environment-specific deployment steps. Commits include: 60a75f70..., 70d5c531..., 603f71ec..., 3cd17ef3..., 5f84b6d5..., dea6a9ac... Major bugs fixed: - UI Sizing and Horizontal Padding Fixes: Corrected sizing and added missing horizontal padding. Commits: bf2d6dd4..., 328b22ad... - UI Test Fix: Resolved flaky UI tests. Commit: 89e047be... - Integration Configuration and Test Fix: Added integration configuration and fixed tests. Commit: f65ffda1... - R8 Issue and Settings Image Fix: Resolved R8 issue and corrected settings tab image. Commit: fe9ae48f... - Memory/Build Configuration Fixes: Increased memory, added ProGuard rules, updated mobile-ui, and fixed linting issues. Commits: 7a8b976b..., 50f3fece..., 48da827b..., 0fe3a757... - Dependency Issues and Tests: Fixed dependency issues and test failures. Commit: b58362e6... - Accessibility Semantics and Focus Order: Fixed accessibility semantics and focus order across screens. Commits: 6a1c74d6..., 7e7476b6... - Icon Tests Removal: Removed icon tests temporarily. Commit: 13ae6d2f... Overall impact and accomplishments: - Higher release stability and faster cycle times due to CI and workflow improvements. - More robust, environment-aware configurations reducing deploy risk and misconfiguration. - Improved onboarding experience, accessibility, and biometric capabilities with analytics coverage for better product decisions. - Upgraded core platform integrations (Cri Orchestrator, Wallet SDK, CRI SDK) to enable new features and ensure compatibility. - Expanded test coverage (staging, navigation graph) and code-quality improvements across the codebase. Technologies/skills demonstrated: - Android app development (Kotlin), UI/UX, accessibility, and biometric flows. - Dependency management and SDK upgrades (Cri Orchestrator, Wallet, CRI). - CI/CD workflows, build optimizations, ProGuard and memory tuning. - Testing, QA automation, and GA4 integration for analytics.

April 2025

17 Commits • 6 Features

Apr 1, 2025

Concise monthly summary for 2025-04: Delivered critical updates across the Android login product, focusing on security, reliability, and maintainability. Implemented a new Local Authentication System with LocalAuthManager and the localauth library, modernized core login flows, and added a dev-menu test to exercise local auth error paths. Integrated CRI Orchestrator with DI/module updates and related UI/build changes. Updated Wallet SDK UI to the latest version with LocalContext -> LocalActivity migrations and associated UI tweaks. Refined End-to-End tests for login/local auth flows to improve reliability and accuracy. Strengthened CI and dependency management with grouped patch/minor updates and formatting fixes for Dependabot.

March 2025

41 Commits • 15 Features

Mar 1, 2025

Monthly summary for 2025-03 focused on delivering business value through UX resilience, reliability, and maintainability in the govuk-one-login Android app. Highlights include resilient SplashScreen routing on SecureStoreError, sign-out UX updates, and build/infrastructure improvements that reduce friction and unlock faster release cycles. The month also delivered a strengthened test strategy via Robolectric adoption, platform upgrades (Java 21), enhanced authentication error handling, accessibility enhancements, and targeted bug fixes that improve stability and security.

February 2025

69 Commits • 19 Features

Feb 1, 2025

February 2025 monthly summary for govuk-one-login/mobile-android-one-login-app: delivered substantial feature work and architecture improvements, with a focus on user experience, telemetry, and release readiness. The cycle emphasized UI consistency, robust analytics, modularization, and stabilization of the build/release process to support safer, data-driven decisions and faster delivery.

January 2025

15 Commits • 5 Features

Jan 1, 2025

January 2025 focused on delivering robust user experience, enabling modern identity verification flows, and stabilizing the mobile one-login app through targeted refactors and dependency updates. Key work spanned feature delivery, strategic bug fixes, and foundational analytics for business insight, while removing legacy configurations to simplify maintenance.

December 2024

3 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary for govuk-one-login/mobile-android-one-login-app: Delivered security-focused authentication enhancements and resolved a token parsing issue, strengthening login integrity and reducing production parsing errors.

November 2024

31 Commits • 9 Features

Nov 1, 2024

November 2024 monthly wrap-up for govuk-one-login/mobile-android-one-login-app. Delivered core security/auth enhancements, improved test quality, and stabilized the build & networking surface, driving reliability and business value for the Android login experience.

October 2024

4 Commits • 2 Features

Oct 1, 2024

October 2024 monthly summary: Delivered foundational security enhancements for the Android one-login app by integrating App Check and app integrity checks, and hardening token handling and release-time configuration. Implementations lay groundwork for verifying legitimate app instances and securing backend access, with secure key storage in the Android Keystore. These changes improve security, reliability, and developer efficiency for backend access control.

Activity

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Quality Metrics

Correctness88.6%
Maintainability88.8%
Architecture85.4%
Performance82.4%
AI Usage21.2%

Skills & Technologies

Programming Languages

BashBinaryGPGGradleGroovyJSONJavaKotlinMarkdownPNG

Technical Skills

API HandlingAPI IntegrationAPI Response HandlingAPI integrationAPI testingAccessibilityAnalyticsAnalytics IntegrationAndroid DevelopmentAndroid TestingAndroid developmentApp CheckApp IntegrityAsset ManagementAuthentication

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

govuk-one-login/mobile-android-one-login-app

Oct 2024 Apr 2026
19 Months active

Languages Used

GradleJavaKotlinYAMLTOMLShellXMLproperties

Technical Skills

API IntegrationAndroid DevelopmentCoroutinesDependency InjectionFirebaseFirebase App Check