skkuding/codedang
Nov 2025 – Mar 2026
4 Months active
Languages Used
GraphQLTypeScriptSQL
Technical Skills
GraphQLNestJSbackend developmentTypeScriptdatabase managementAPI development
Seungmin Nam
PROFILE
Seungmin Nam
Namhoon Jeong contributed backend features to the skkuding/codedang repository, focusing on scalable data access and maintainability. Over four months, he built a GraphQL API for precise submission result retrieval, optimized notification creation in TypeScript and NestJS to reduce database latency, and refactored core services for efficient query execution using Prisma and SQL. He enhanced code quality by adding comprehensive JSDoc documentation and aligning with repository guidelines. Namhoon also delivered a Study Groups Management API, introducing schema enhancements and authorization guards to support secure, collaborative workflows. His work emphasized performance, maintainability, and clear documentation across backend systems and APIs.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
5Total
Bugs
0
Commits
5
Features
4
Lines of code
1,571
Activity Months4
Your Network
40 peopleWork History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for skkuding/codedang focusing on delivering Study Groups Management API, schema enhancements with groupTag, and authorization guard improvements, enabling scalable group-based collaboration and improved data access performance. Key actions included implementing the main API for StudyGroup with CRUD, adding groupTag to Group model to surface tags efficiently, refining StudyGroup update permissions with UseGroupLeaderGuard, and aligning PR practices with descriptive commit messages.
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for skkuding/codedang focusing on delivering Study Groups Management API, schema enhancements with groupTag, and authorization guard improvements, enabling scalable group-based collaboration and improved data access performance. Key actions included implementing the main API for StudyGroup with CRUD, adding groupTag to Group model to surface tags efficiently, refining StudyGroup update permissions with UseGroupLeaderGuard, and aligning PR practices with descriptive commit messages.
March 2026
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 — Consolidated backend code quality and performance improvements for AssignmentProblemService and SubmissionSubscriptionService. Implemented comprehensive JSDoc documentation, performed safe performance refactors that preserved external behavior, and introduced targeted DB-query optimizations to reduce latency and boost throughput for submission processing and contest scoring. These changes improve maintainability, reliability, and scalability for upcoming features and higher workload.
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 — Consolidated backend code quality and performance improvements for AssignmentProblemService and SubmissionSubscriptionService. Implemented comprehensive JSDoc documentation, performed safe performance refactors that preserved external behavior, and introduced targeted DB-query optimizations to reduce latency and boost throughput for submission processing and contest scoring. These changes improve maintainability, reliability, and scalability for upcoming features and higher workload.
January 2026
1 Commits • 1 Features
Jan 1, 2026Monthly summary for 2026-01: Focused on delivering a high-impact notification enhancement in the codedang repository, along with documentation improvements to support long-term maintainability and performance.
1 Commits • 1 Features
Jan 1, 2026Monthly summary for 2026-01: Focused on delivering a high-impact notification enhancement in the codedang repository, along with documentation improvements to support long-term maintainability and performance.
January 2026
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11 – Developer Performance Summary Key achievements and business impact from backend work on the codedang repository, with a focus on delivering measurable value and scalable data access.
November 2025
1 Commits • 1 Features
Nov 1, 2025Month 2025-11 – Developer Performance Summary Key achievements and business impact from backend work on the codedang repository, with a focus on delivering measurable value and scalable data access.
Activity
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Quality Metrics
Correctness92.0%
Maintainability84.0%
Architecture88.0%
Performance84.0%
AI Usage36.0%
Skills & Technologies
Programming Languages
GraphQLSQLTypeScript
Technical Skills
API developmentGraphQLNestJSPrismaTypeScriptbackend developmentdatabase management
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline