Sahil Mehar

I’m a Software Development Engineer at Nineleaps, where I turn complex UI and data workflows into fast, maintainable Angular experiences. I’ve led production-ready upgrades, built scalable feature modules, and worked end-to-end from API integration to monitoring and quality gates.

Most recently, I led an Angular version upgrade from v17 to v21, handling breaking changes and migrating deprecated APIs while updating compatibility for PrimeNG, AG Grid Enterprise, and Highcharts. I also architected feature modules using the Facade design pattern, OnPush change detection, and lazy loading—improving platform speed by 10%—and built data-intensive UI with AG Grid Enterprise and Highcharts for a platform processing 700–800 valuations/quarter.

To keep delivery reliable, I developed shared services, pipes, and utility libraries following DRY, integrating REST APIs with RxJS operators like forkJoin, switchMap, shareReplay, and catchError. I integrated Datadog RUM for real-user monitoring, set up multi-environment CI/CD pipelines (UAT, EUT, Pre-Prod, and multi-region Production), and enforced code quality via SonarQube, ESLint, Prettier, and Stylelint. I also established Jest and Spectator unit testing (90% coverage) and reduced bugs by 25%, while publishing a reusable Angular component library as an NPM package and using AI tools (Cursor, Claude) to accelerate development and review workflows.

Before this, I was an SDE Intern at Nineleaps, building user-facing features across Angular modules like Fund Overview, Fund Securities, Investment Summary, Company Summary, and Capital Structure. I led migration to Angular standalone components, designed accessible UIs aligned with WCAG 2.1 (including skip navigation links), and implemented multi-locale support with an i18n framework (translate service and t9n pipe). I also ran POCs across areas like NgRx state management, secure auth token handling, SonarQube integration, and UI consistency—reinforcing my preference for practical experimentation tied to measurable outcomes.