• Web code editor integration: Embedded and customized an in-browser code editor (Monaco Editor), adding custom syntax highlighting and tooling actions — reduced developer configuration/onboarding time by ~25%.

• Component architecture & performance: Engineered reusable UI component libraries on NG-ZORRO and PrimeNG shared across multiple internal applications; implemented Angular CDK virtual scrolling for large datasets, cutting initial render time by ~40% and reducing memory usage by ~30%.

• Multi-framework tool development: Defined the architecture for internal tools spanning Angular 18+, React, and Vue.js on a unified REST API data layer, and led code reviews across the team — reaching ~80% unit test coverage and reducing post-release bug reports by ~20%.

• Legacy migration & modernization: Led the migration from AngularJS to Angular 16+ with zero downtime, improving app load performance by ~35% and reducing new-feature delivery time by ~20%.

• Database performance tuning: Authored optimized SQL queries, stored procedures, and triggers, reducing overall database load by 40%.

• Backend & API development: Designed and implemented RESTful Web APIs using .NET 6/C# 10 with EF Core, cutting average API response time by ~25% and improving data-access reliability.

• Architecture refactoring: Reduced code duplication by 30% and improved maintainability by introducing MediatR, AutoMapper, and FluentValidation patterns.

• Full-stack API integration: Delivered responsive UI features using PrimeNG, integrating secure RESTful endpoints across Angular and .NET layers — reduced reported UI bugs by ~15%.

• Data access optimization: Optimized Entity Framework Core queries and SQL indexing, reducing average query response time by ~30%.