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Malick Diarra

PROFILE

Malick Diarra

Malick Diarra engineered robust identity and authentication features for the 18F/identity-idp repository, focusing on account integrity, security, and user experience. He developed device profiling, duplicate profile detection, and A/B testing for onboarding, integrating backend logic with Ruby on Rails and enhancing analytics using JavaScript. His work included database modeling, migration management, and internationalization, ensuring reliable onboarding and strong data integrity. Malick also contributed to DevOps scripts and documentation in GSA-TTS/identity-site, improving operational efficiency and user guidance. His technical approach emphasized maintainable code, comprehensive test coverage, and clear changelog traceability, resulting in resilient, auditable, and user-focused identity workflows.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

60Total
Bugs
9
Commits
60
Features
32
Lines of code
8,064
Activity Months15

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026: Delivered a focused enhancement to identity-site documentation by adding an Authentication Methods Accordion to guide users in managing and recovering lost authentication methods. This reduces user confusion and support overhead while improving self-service capabilities. Work aligned with LG-17157 (referencing #1539) and implemented in GSA-TTS/identity-site with commit ed38bacc59f8dfc507ad29859149d8a4f9aa3d81.

December 2025

4 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary for 18F/identity-idp: Implemented security-focused enhancements to the authentication flow, added front-end analytics for passkey usage, fixed critical 2FA token handling, and upgraded the AWS SDK for S3 to address vulnerabilities. These changes improve authentication integrity, observability, and security posture while delivering clear business value to customers and stakeholders.

November 2025

1 Commits • 1 Features

Nov 1, 2025

November 2025: Expanded internationalization for Norfolk Island and Palau by adding dialing codes and localization resources, and stabilized i18n-related tests. This work broadens regional coverage, improves usability for international users, and strengthens release quality across 18F/identity-idp.

October 2025

5 Commits • 3 Features

Oct 1, 2025

October 2025: Delivered security- and data-integrity-focused enhancements for identity-idp. Implemented suspension checks in authentication (OIDC/SAML) to prevent suspended users from bypassing security and directed them to a 'please call' page. Added daily account reset rate limiting to curb abuse. Expanded duplicate profile management with robust detection, safe merging, and analytics improvements. Fixed a security bypass issue by preventing reopening of closed duplicate profile sets, with refactored logic and updated analytics. These changes reduce account abuse, improve data quality, and strengthen authentication integrity across auth flows, directly supporting risk reduction, regulatory alignment, and user trust. Technologies demonstrated include authentication pipelines, rate limiting, data integrity checks, de-duplication logic, analytics instrumentation, and ticket-driven development.

September 2025

5 Commits • 2 Features

Sep 1, 2025

September 2025: Delivered core One Account enhancements in 18F/identity-idp, focusing on data integrity, security, and reliability. Implemented a unified One Account Duplicate Profile Management flow (detection, blocking, and resolution) with AB testing consistency for existing duplicates, enhanced analytics for self-service actions (profile deletions, provider revocations), improved safeguards against duplicate creation, and updated tests. Added automated feature tests for the One Account sign-in flow to ensure correct handling when profiles match or do not match SSN signatures and service provider linkages. These efforts improved data quality, reduced risk in high-friction flows, and strengthened observability through better metrics and coverage.

August 2025

7 Commits • 4 Features

Aug 1, 2025

2025-08 monthly summary focused on increasing onboarding reliability for One Account, hardening identity flows against abuse, and improving developer efficiency across identity services. Key features delivered include One Account - User Verification A/B Testing with new configuration and integration into the application controller to bucket users for verification, Device Profiling - Admin override for failed device profiling to improve onboarding reliability, and a revamped Duplicate Profile workflow with a new model, detection/redirect logic, and SMS alerts to notify security-related events. Additionally, a DevOps script to clear device profiling failures was introduced to unblock users during account creation. Business value: higher onboarding completion rates for legitimate users, reduced friction and support interventions, and stronger protections against bypass scenarios. Technologies/skills demonstrated: Rails controller and specs updates, A/B framework integration, model/service/controller refactors, SMS/alerts integration, and DevOps scripting with runbook/documentation updates.

July 2025

6 Commits • 3 Features

Jul 1, 2025

July 2025 monthly summary for 18F/identity-idp focused on strengthening device profiling, improving duplicate profile handling, and enabling admin tooling for profiling overrides. Delivered ThreatMetrix integration in account creation, enhanced duplicate profile UX and notifications, and introduced admin tooling for device profiling updates. These efforts reduce risk, improve user experience, and provide better operational oversight through changelog traceability and scalable workflows.

June 2025

5 Commits • 2 Features

Jun 1, 2025

June 2025: Delivered device profiling enhancements during account creation, including a new Device Profiling data model and DB table linked to users; integrated TMX result handling into the flow; and added user-facing failure UX. A migration error prompted a controlled rollback of the DeviceProfilingResult feature, removing the model, migration, and associations to restore schema integrity. Major fixes include guarding duplicate profile detection across scenarios to prevent errors when no active profile exists. The work strengthens security telemetry, improves user experience on profiling failures, and demonstrates strong database modeling, migration management, tests, and TMX integration.

May 2025

3 Commits • 3 Features

May 1, 2025

May 2025 performance highlights for 18F/identity-idp: Delivered three strategic features that strengthen account integrity, enhance the sign-in experience, and stabilize background processing. No major bugs fixed this month. The work drives business value by improving user trust, reducing support friction, and delivering more predictable system performance.

April 2025

3 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary for 18F/identity-idp focusing on key features delivered, major bugs fixed, overall impact, and technical accomplishments. Value-driven highlights emphasize user experience improvements, security hardening, and localization impact.

March 2025

5 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary for 18F/identity-idp. Focused on delivering features that improve security analytics, stabilizing authentication behavior, and enhancing user control over account resets. Delivered targeted backend work, performed safe rollbacks where needed, and strengthened the overall risk and identity management flow. Business value includes better threat visibility, consistent authentication validation, and faster user-initiated account reset cancellation.

February 2025

4 Commits • 3 Features

Feb 1, 2025

February 2025 – 18F/identity-idp Key features delivered: - Click Tracking for Tab Navigation: Added a ClickObserverComponent to capture and send click event payloads for tab navigation, enabling analytics on user interactions and informing UX decisions. - Delete Account Confirmation Page UI Integration: Integrated delete confirmation with StatusPageComponent, added a delete status and refactored the confirmation view to ensure a consistent UI and clearer messaging. - French Localization Enhancements: Improved display of French text by handling special characters, non-breaking spaces, French quotation marks, and glyph/text formatting across the app, reducing localization errors in production. Major bugs fixed: - Hide Continue to Service Provider Link After Handoff: Prevented showing the post-handoff link by introducing a successful_handoff flag and updating the presenter to conditionally render the link, reducing user confusion after the handoff. Overall impact and accomplishments: - Strengthened analytics capability, improved UX consistency and localization quality, and ensured a cleaner handoff flow to service providers. These changes support data-driven product decisions, reduce support friction, and improve satisfaction for French-speaking users. Technologies/skills demonstrated: - Component-based UI development, analytics instrumentation, UI refactoring for consistency, localization engineering, and flow control in presenter logic.

January 2025

2 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for 18F/identity-idp focusing on multilingual usability improvements and data privacy in email handling. Delivered two key changes: (1) Email Address Selection UI Localization to improve clarity and user experience in French and Simplified Chinese, with changelog update to reflect user-facing improvements, and (2) Secure Email Sharing Logic for Connected Accounts to ensure a single email is shared when requested and to avoid saving a specific email ID when all_emails is requested, reducing data exposure risk.

December 2024

4 Commits • 2 Features

Dec 1, 2024

Month: 2024-12. Focused delivery on security-forward feature enhancements and UX improvements in identity-idp, with thorough commit traceability. Key features delivered include ThreatMetrix Integration Enhancements and Sign-up Email Flow Improvements, aligned with MFA workflow and streamlined onboarding. No explicit major bugs fixed were documented in this scope; the work emphasizes reliability, risk assessment, and user experience. Overall impact: Strengthened threat analysis integration within the MFA flow, reduced onboarding friction by standardizing email UX, and improved consistency and traceability across feature development and release notes. Technologies/skills demonstrated: ThreatMetrix integration, MFA workflow adjustments, UX standardization for email flows, commit-driven development with LG- tracked changes and changelog updates.

November 2024

5 Commits • 2 Features

Nov 1, 2024

Month 2024-11 — Delivered two high-impact features in 18F/identity-idp with concrete business value: Email Flow Improvements and ThreatMetrix integration for account creation. Email Flow Improvements implemented banner messages for email confirmation, clarified the email selection UI, and conditionally displayed the Add Email button to prevent invalid actions; related commits include f15db1eccaf5a0733627e04862735262c43a57b9 (LG-14692), 57442d8219690287a63f71fd67e5d0b372fd4ac4 (LG-14607), and 345afa2c313a7833e1264fb27d216ca6ed8da2ce (LG-14741). ThreatMetrix integration adds device profiling and fraud detection during account creation, with an asynchronous processing job, addressing resubmission issues when TMX is enabled, and extended test coverage; commits include 88d46be0fe1aad93bb474dd1cb0e4b3e53763292 (LG-14525) and e65aff13aef79bf89b5ea7dd89747b8ffcd14e0f (changelog: Bug Fixes, ThreatMetrix Account creation, Fixes issue with resubmission with TMX enabled for Account creation). Fixed resubmission issues with TMX enabled for account creation and updated changelog. Overall impact: smoother onboarding with clearer user flows, reduced invalid actions, stronger fraud protection, and more robust release readiness through expanded tests. Technologies/skills demonstrated: UI/UX refinement, ThreatMetrix integration, asynchronous job processing, test automation, changelog maintenance, and cross-team collaboration.

Activity

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Quality Metrics

Correctness89.2%
Maintainability85.0%
Architecture83.8%
Performance80.4%
AI Usage20.6%

Skills & Technologies

Programming Languages

CSSERBHTMLJavaScriptMarkdownRSpecRubySCSSSQLShell

Technical Skills

A/B TestingAPI DevelopmentAPI IntegrationAWS SDKAnalyticsAnalytics IntegrationAnalytics TrackingAuthenticationAuthentication and AuthorizationBackend DevelopmentBackground JobsComponent DevelopmentConditional RenderingConfiguration ManagementController Logic

Repositories Contributed To

3 repos

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

18F/identity-idp

Nov 2024 Dec 2025
14 Months active

Languages Used

ERBHTMLRubyYAMLerbrubyymlJavaScript

Technical Skills

API IntegrationBackend DevelopmentConditional RenderingEmail TemplatingForm HandlingFraud Detection

GSA-TTS/identity-handbook

Aug 2025 Aug 2025
1 Month active

Languages Used

Markdown

Technical Skills

DevOpsDocumentation

GSA-TTS/identity-site

Feb 2026 Feb 2026
1 Month active

Languages Used

Markdown

Technical Skills

content managementdocumentationuser experience design

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