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Dang Van Sinh

PROFILE

Dang Van Sinh

Sinh Dang developed and enhanced the st-united/AICP-API backend over four months, delivering 33 features and resolving 7 bugs. He engineered robust exam submission and scoring workflows, improved authentication with Google Sign-In, and implemented dynamic slot scheduling for interviews. His work included optimizing image uploads, automating exam result processing, and refining certificate generation using TypeScript, NestJS, and Prisma ORM. Sinh focused on data model cleanups, schema migrations, and real-time notifications via WebSockets, ensuring reliability and maintainability. His technical depth is evident in the breadth of backend improvements, from database design to API development, supporting scalable, user-centric workflows.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

101Total
Bugs
7
Commits
101
Features
33
Lines of code
9,448
Activity Months4

Work History

August 2025

20 Commits • 3 Features

Aug 1, 2025

August 2025 (Month: 2025-08) - AICP-API backend focus: consolidated slot availability and scheduling, enhanced exam status workflows, and data-model cleanups to improve reliability, speed, and maintainability. Delivered end-to-end features for scheduling, refined API responses for exam status, and performed schema cleanups to reduce debt while keeping backward compatibility where possible. These efforts result in more accurate booking availability, clearer progress visibility for exams, and a leaner, safer data model, directly supporting a better developer and user experience and scalable growth.

July 2025

49 Commits • 21 Features

Jul 1, 2025

July 2025 performance summary for st-united/AICP-API: Delivered core features to improve user experience, reliability, and scalability. Implemented image upload enhancements with automated resize/compression and type validation, boosting storage efficiency and upload reliability. Revamped exam results flow with updated score saving logic and enhanced result retrieval/level calculation, enabling accurate auto-grading and richer testing history. Enhanced admin and user lifecycle with status tracking, new migrations for user/test tracking fields, and Google login activated status, improving governance and analytics. Modernized certificate handling with export to PDF, certificate download, and UI improvements, delivering smoother certificate workflows. Implemented reliability and performance improvements including code optimization, merge conflict resolution, seed data updates with SFIA levels, API to fetch all exam sets, and automated auto-submit job for expired exams; plus WebSocket-based interview booking notifications and enhanced interview request management.

June 2025

22 Commits • 8 Features

Jun 1, 2025

June 2025 delivered a focused set of end-to-end improvements for AICP-API with a strong emphasis on user-centric workflow, reliability, and performance. Key functional deliverables include a complete exam submission flow with draft-saving, translation/localization, and per-competency pillar scoring; authentication improvements with Google Sign-In and token generation flows; profile stabilization to persist job domain information along with a fix to the profile update path; a refreshed mentor onboarding experience via the activation email template; and a UI/search enhancement for test history to improve discoverability and response times. In addition, the team completed critical stability work around test/quiz interactions (e.g., immediate-exit answer deletion) and validation messaging to reduce user errors and support onboarding.

May 2025

10 Commits • 1 Features

May 1, 2025

May 2025 Monthly Summary for st-united/AICP-API: Implemented an end-to-end Exam Answer Submission and Scoring System, establishing a robust submission workflow from client inputs to scoring results storage. Delivered core data model changes and comprehensive error handling to ensure data integrity and reliable user experience.

Activity

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Quality Metrics

Correctness86.8%
Maintainability85.2%
Architecture82.4%
Performance83.0%
AI Usage22.2%

Skills & Technologies

Programming Languages

CSSHandlebarsJavaScriptN/APrismaPrisma SchemaSQLTypeScriptYAML

Technical Skills

API DevelopmentAuthenticationBackend DevelopmentBcryptCloud Storage IntegrationCode CleanupCode OptimizationCron JobsDTO DesignDTO ValidationData SeedingDatabase DesignDatabase Interaction (Prisma)Database ManagementDatabase Querying

Repositories Contributed To

1 repo

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

st-united/AICP-API

May 2025 Aug 2025
4 Months active

Languages Used

JavaScriptSQLTypeScriptN/APrismaCSSHandlebarsPrisma Schema

Technical Skills

API DevelopmentBackend DevelopmentDTO ValidationDatabase DesignDatabase Interaction (Prisma)Database Management

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