Himanshu Sahu profile photo 1 on Tal

Himanshu Sahu

Senior Software Engineer @ LeadSquared | Frontend | Javascript • React • TypeScript • Rspack • Performance Optimization

Bengaluru

4+ years of work experience

LeadSquared
Apr 20251 yr 5 mosPresent

● Led production releases, hotfixes and patch deployments across 18 microfrontends, ensuring reliable releases with zero production downtime.  ● Saved ~$2K/month in AWS CDN costs by implementing browser caching with optimised headers and asset versioning for JavaScript assets, reducing redundant CDN requests. ● Standardized production observability by implementing structured logging,  user metadata and monitoring dashboards using Coralogix and New Relic, enabling faster root-cause analysis for frontend applications.  ● Resolved 150+ production issues across authentication, telephony, Service Cloud, Lead360, Smart Views and CRM modules by collaborating with platform and backend teams, improving overall product reliability.  ● Contributed to code reviews across 18 microfrontends, improving engineering quality and maintaining consistent development standards.  ● Implemented Claude agents, hooks, skills, and automated verification workflows to enforce project standards for AI-generated code.
LeadSquared
Apr 20232 yrsMar 2025

● Reduced P99 load time by 80% (12s to 3s) on 6× CPU slowdown through optimizing critical rendering path, JavaScript bundle, and performance-focused development from scratch, implementing intelligent prefetching and preloading aligned with user workflows, enhancing user retention and satisfaction. ● Designed and built a browser-based performance diagnostics framework that generated customer environment reports, including network, device, memory, cache efficiency, slow APIs, slow assets and client-server latency, enabling support teams to triage performance issues, reducing unnecessary engineering escalations.  ● Reduced customer-reported production exceptions by 50% by integrating New Relic monitoring for proactive issue detection.  ● Engineered a high-performance, pixel-perfect in-house UI component library with accessibility and unit/integration tests; revamped the design system in Figma, driving a 30% increase in design satisfaction and adoption across 5+ teams. ● Delivered a high-traffic product feature serving over 250K page visits on launch day, ensuring performance and stability in production.
LeadSquared
Oct 20211 yr 6 mosMar 2023

● Collaborated with Product Managers to define user-centric features and delivered them ahead of schedule, resulting in a 20% increase in customer onboarding. ● Improved app stability by 25% by resolving 200+ bugs and design issues and made the app production-ready before the deadline. ● Built pixel-perfect, responsive, scalable UI components, achieving 100% design from Adobe XD and enabling cross-team adoption.
GitHub
@himanshusahu99
LeetCode
@himanshu1905

Himanshu’s AI Stack

claude code
claude code
codex
codex
cursor
cursor
github copilot
github copilot
windsurf
windsurf
ChatGPT
ChatGPT

Education

Bachelor of Engineering - BE, Computer Science

Shri Shankaracharya Technical Campus Bhilai

20174 yrs2021

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Headline

Senior Software Engineer @ LeadSquared | Frontend | Javascript • React • TypeScript • Rspack • Performance Optimization

Location

Bengaluru

AI stack

claude code

codex

cursor

github copilot

windsurf

ChatGPT

Work experience

Senior Software Engineer at LeadSquared, Apr 2025 - Present · 1 yr 5 mos, ● Led production releases, hotfixes and patch deployments across 18 microfrontends, ensuring reliable releases with zero production downtime. ● Saved ~$2K/month in AWS CDN costs by implementing browser caching with optimised headers and asset versioning for JavaScript assets, reducing redundant CDN requests. ● Standardized production observability by implementing structured logging, user metadata and monitoring dashboards using Coralogix and New Relic, enabling faster root-cause analysis for frontend applications. ● Resolved 150+ production issues across authentication, telephony, Service Cloud, Lead360, Smart Views and CRM modules by collaborating with platform and backend teams, improving overall product reliability. ● Contributed to code reviews across 18 microfrontends, improving engineering quality and maintaining consistent development standards. ● Implemented Claude agents, hooks, skills, and automated verification workflows to enforce project standards for AI-generated code.

Software Engineer at LeadSquared, Apr 2023 - Mar 2025 · 2 yrs, ● Reduced P99 load time by 80% (12s to 3s) on 6× CPU slowdown through optimizing critical rendering path, JavaScript bundle, and performance-focused development from scratch, implementing intelligent prefetching and preloading aligned with user workflows, enhancing user retention and satisfaction. ● Designed and built a browser-based performance diagnostics framework that generated customer environment reports, including network, device, memory, cache efficiency, slow APIs, slow assets and client-server latency, enabling support teams to triage performance issues, reducing unnecessary engineering escalations. ● Reduced customer-reported production exceptions by 50% by integrating New Relic monitoring for proactive issue detection. ● Engineered a high-performance, pixel-perfect in-house UI component library with accessibility and unit/integration tests; revamped the design system in Figma, driving a 30% increase in design satisfaction and adoption across 5+ teams. ● Delivered a high-traffic product feature serving over 250K page visits on launch day, ensuring performance and stability in production.

Associate Software Engineer at LeadSquared, Oct 2021 - Mar 2023 · 1 yr 6 mos, ● Collaborated with Product Managers to define user-centric features and delivered them ahead of schedule, resulting in a 20% increase in customer onboarding. ● Improved app stability by 25% by resolving 200+ bugs and design issues and made the app production-ready before the deadline. ● Built pixel-perfect, responsive, scalable UI components, achieving 100% design from Adobe XD and enabling cross-team adoption.

Education

Bachelor of Engineering - BE, Computer Science, Shri Shankaracharya Technical Campus Bhilai

Public links

github: https://github.com/himanshusahu99

leetcode: https://leetcode.com/himanshu1905