Sachin A.

Engineering Manager

South Delhi, Delhi, India9 yrs 1 mo experience

Most Likely To SwitchHighly Stable

Key Highlights

Led frontend efforts at Housing.com.
Revamped housing.com, improving performance metrics significantly.
Expert in building scalable web applications.

Stackforce AI infers this person is a Frontend Architect in the E-commerce sector with a focus on performance optimization.

Contact

Skills

Core Skills

ReactFrontend DevelopmentJavascriptPerformance OptimizationApi DesignSoftware Development

Other Skills

WebpackBabelESLintMicro FrontendsGraphQLService WorkersNext.jsApollo ClientCloudfrontJenkinsCSSHTMLUI DevelopmentData StructuresAlgorithms

About

Experienced Software Engineer with a demonstrated history of working in e-commerce, leisure, travel & tourism industry. Skilled in API design & development, web development in React, jQuery, Javascript ES6, NodeJs, Data Structures, and Java. Strong engineering professional with a Bachelor's Degree focused in Computer Science from Vellore Institute of Technology.

Experience

9 yrs 1 mo

Total Experience

3 yrs

Average Tenure

6 yrs 7 mos

Current Experience

Housing.com

3 roles

Engineering Manager

Promoted

May 2022 – Present · 4 yrs · Gurugram, Haryana, India

Leading the frontend efforts at housing. Currently building scalable server rendered micro frontends, with independent deployments/rollback & custom version management. Building next gen & highly performant web using awesome tools like Babel, webpack, react, eslint, linaria.

ReactWebpackBabelESLintMicro FrontendsFrontend Development

Software Development Team Lead

Promoted

Jun 2019 – Aug 2020 · 1 yr 2 mos · Gurgaon, Haryana, India

Leading a Team of 6.
6. Recently revamped housing.com to latest tech from ground up to clear a long pending technical debt.
Lighthouse score improved from 55 to 89 (94 without third party scripts).
Page Load times (First CPU Idle time) decreased from 5.5 to 3.6s.
JS & CSS size reduced from 300 to 125KB. Optimized for long term caching.
HTML size reduced from 200 to 15 - 30 KB. (achieved using Critical CSS, JS lazy loading & GraphQL
against API over-fetching)
Service workers for complete offline experience, along with background sync for offline conversions.
Differential serving of JS bundles (38% reduction in JS sizes in modern v/s legacy browsers).
Combined SSR data fetching techniques from Next.js & Apollo Client for modularity, better code
splitting & lazy loading.
SSR of first fold for users and complete page for bots.
Dynamic content caching on Cloudfront. Reduced server load and TTFB significantly. Normalized
cache keys by handling parameters like device, users/bots, A/B tests, differential JS bundles, query
string normalization with Lambda@Edge using Serverless.
Choosing & setting up necessary stack for our use cases (Webpack 4, Redux, React 16 with SSR &
hooks, & Apollo GraphQL server).
Setting up build, release processes and monitoring systems (Datadog + Sentry).
Jenkins pipelines for CI/CD integrations with Github.
Ongoing projects: Webp compression on nginx. GraphQL query uglification Babel Plugin for cacheable
GET requests. HTTP2 server push POC on Nginx & Akamai. Preact POC (SSR on React) on
Housing.com. Micro-Frontend POC using Webpack 5 Module Federation.