Sahil Jaglan

Senior Frontend Engineer

Gurgaon, India 3+ yrs exp 87 · Excellent

About

Senior Frontend Engineer with 4+ years of experience building scalable, high-performance Angular and React applications for enterprise platforms. Strong expertise in Micro-Frontend architecture, reusable component systems, performance optimization, CI/CD, Docker, end-to-end feature delivery, RxJS, NgRx, React Hooks, State Management and accessibility (WCAG/ARIA). Proven track record of leading application migrations, building shared UI component Library adopted across 9+ projects, automating deployments, and mentoring engineers in Agile environments.

Skills & Expertise (42)

Angular Advanced

8.5/10

Years Exp

Typescript Advanced

8.3/10

Years Exp

JavaScript Advanced

8.0/10

Years Exp

HTML5 Advanced

8.0/10

Years Exp

CSS3 Advanced

8.0/10

Years Exp

Git Advanced

8.0/10

Years Exp

SCSS Advanced

7.8/10

Years Exp

React Advanced

7.8/10

Years Exp

Unit Testing Advanced

7.5/10

Years Exp

Scrum Advanced

7.5/10

Years Exp

Agile Advanced

7.5/10

Years Exp

Docker Intermediate

7.0/10

Years Exp

Mentorship Advanced

7.0/10

Years Exp

code reviews Cross-browser testing Responsive Design Accessibility Wave Lighthouse Chrome DevTools Module Federation SonarQube Gitlab Jasmine Karma Highcharts Angular CLI NPM Webpack RxJS NgRx I18n Localization Angular Material Asynchronous programming Hooks Context API REDUX RESTful APIs JSON Http Client Promises

Work Experience

Sr. Software Engineer

LIBSYS Ltd

Jul 2025 - Apr 2026

Architected and automated CI/CD deployment pipelines for 10+ frontend applications using Docker and Git workflows, reducing deployment time from 1 hour to 15 minutes; integrated SonarQube quality gates to improve code quality and reduce debugging effort. Led a complete revamp of the registration portal overhauling both the codebase and the UI/UX design improving user interaction by 25% based on analytics data over a 2-month period. Collaborated with Product and UX teams to make the web application fully responsive across mobile viewports, fixing screens that previously broke on smaller devices and reducing the defect rate by 30%. Optimized frontend architecture by introducing lazy-loaded modules and restructuring application boundaries, reducing bundle size and improving load times by 30%. Designed and maintained Micro-Frontend architecture using Module Federation, enabling independently developed frontend modules and improving scalability across enterprise applications. Owned end-to-end development of a new course registration application, delivering the frontend from architecture to production in 1 week; integrated backend APIs and external payment gateway redirects across Course, Exam, and Supplementary Registration workflows. Mentored 12+ engineers through structured Angular training, architectural guidance, and code reviews, improving code consistency and adherence to frontend engineering standards across the team. Migrated the application from Angular 17 to 19, adopting Signals for reactive state management and leveraging framework-level improvements that enhanced overall functionality and reduced loading times. Reduced development time by leveraging AI-powered coding tools like Cursor to accelerate feature delivery and routine engineering tasks.

Software Engineer

LIBSYS Ltd

Jul 2022 - Jun 2025

Worked with modern frontend concepts across Angular and React ecosystems, including reusable component architecture, state-driven UI patterns, and performance optimization techniques. Delivered responsive UI features using Angular, React, HTML5, SCSS, and TypeScript for large-scale web platforms. Built a shared Angular component library as a wrapper over Angular Material, adopted across 9+ projects, reducing development time for other developers by 25% and ensuring consistency across products. Led cross-browser testing across major platforms, identifying components that failed on browsers like Safari and standardizing CSS to ensure consistent behavior and rendering across browsers. Migrated Angular applications from v12 to v17, adopting standalone components, the new built-in control flow syntax, and typed reactive forms. Improved website accessibility by integrating ARIA labels and adhering to WCAG guidelines across the application, validated using Lighthouse and WAVE tools to help users with disabilities navigate the platform more effectively. Consistently delivered features and issue fixes on tight deadlines across multiple client engagements. Implemented internationalization (i18n) and localization support in frontend applications, enabling multi-language UI, translated labels/messages, and locale-specific content across enterprise platforms.