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John Lim

PROFILE

John Lim

Ziyang John worked on the ntu-pear/PEAR_patient_service and PEAR_WebFE repositories, building scalable patient data management features with a focus on dementia, mobility, and image handling. He designed and implemented RESTful APIs and CRUD operations using Python, FastAPI, and SQLAlchemy, ensuring robust data integrity and auditability. His work included Cloudinary integration for image uploads, advanced logging for observability, and frontend enhancements in React and TypeScript to support account logs and authentication flows. By refining deployment pipelines with Docker and Kubernetes, Ziyang enabled reliable CI/CD and environment parity, delivering maintainable, testable systems that support analytics, compliance, and future feature growth.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

43Total
Bugs
4
Commits
43
Features
14
Lines of code
5,575
Activity Months6

Your Network

16 people

Shared Repositories

16

Work History

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025 performance summary for ntu-pear/PEAR_patient_service. Focused on improving observability and auditability of patient mobility updates. Delivered a feature enhancement to audit logging and ensured complete data capture for traceability, including PatientID, across CRUD operations. The work improves compliance readiness, debugging efficiency, and data lineage without impacting core functionality.

April 2025

2 Commits • 1 Features

Apr 1, 2025

Monthly performance summary for 2025-04: ntu-pear/PEAR_patient_service—mobility entries optimization with logging standardization, followed by rollback to restore stability during local testing. Emphasis on business value, technical achievement, and clean change management.

March 2025

15 Commits • 4 Features

Mar 1, 2025

March 2025 monthly summary for NTU-PEAR projects, focusing on data integrity, security, UI/UX improvements, and deployment readiness across the PEAR_patient_service and PEAR_WebFE repositories. Implemented substantial enhancements to patient data handling, dementia data enrichment, authentication flows, and UI refinements, while stabilizing tests and aligning environment configurations for reliable CI/CD.

February 2025

13 Commits • 3 Features

Feb 1, 2025

February 2025 performance summary focusing on business value and technical execution across two repositories (PEAR_patient_service and PEAR_WebFE). Key features delivered include a patient image management prototype with Cloudinary integration and CRUD scaffolding, and a frontend Account Logs page for auditing. Major infrastructure and data integrity improvements include CI/CD and deployment refinements with Cloudinary environment variable handling, Docker/Kubernetes tweaks, and resource scaling optimizations, plus a safeguard enforcing isDeleted checks to prevent updates to soft-deleted records. Additionally, the Account Logs UI was implemented with routing, mock data, search, detail view, and pagination for improved observability. Unit testing for image upload and boundary checks began but was not completed; groundwork for data models and payload schemas completed to support scalable media features.

January 2025

10 Commits • 3 Features

Jan 1, 2025

Summary for 2025-01 for ntu-pear/PEAR_patient_service: Delivered end-to-end patient data management enhancements, including dementia assignment and mobility data handling, together with a new observability layer and strengthened test coverage. These changes improve data integrity, reliability of patient records, and maintainability of the codebase, enabling faster feature delivery and easier issue diagnosis in production.

December 2024

2 Commits • 2 Features

Dec 1, 2024

December 2024 monthly summary for ntu-pear/PEAR_patient_service. Focused on establishing a scalable dementia data management capability to support patient care, governance, and analytics. Delivered foundational data model and REST APIs for dementia lists and mappings, including CRUD operations, database schema updates, and routing. Extended the dementia mapping functionality with an endpoint to fetch all assigned dementias across patients and refined create/update logic to properly handle isDeleted flags and timestamps. These efforts deliver data integrity, cross-patient visibility, and a solid foundation for future analytics.

Activity

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Quality Metrics

Correctness83.4%
Maintainability84.4%
Architecture77.4%
Performance75.8%
AI Usage22.4%

Skills & Technologies

Programming Languages

BashCSSDockerfileHTMLJavaScriptPythonSQLTypeScriptYAML

Technical Skills

API DevelopmentBackend DevelopmentCI/CDCRUD OperationsCloudinaryCloudinary IntegrationCode RefactoringDatabase ManagementDevOpsDockerEnvironment VariablesError HandlingFastAPIFront End DevelopmentFrontend Development

Repositories Contributed To

2 repos

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

ntu-pear/PEAR_patient_service

Dec 2024 May 2025
6 Months active

Languages Used

PythonSQLBashDockerfileYAML

Technical Skills

API DevelopmentBackend DevelopmentDatabase ManagementFastAPISQLAlchemyError Handling

ntu-pear/PEAR_WebFE

Feb 2025 Mar 2025
2 Months active

Languages Used

HTMLJavaScriptTypeScriptCSS

Technical Skills

Front End DevelopmentFrontend DevelopmentReactTypeScriptUI DevelopmentTailwind CSS