Hi, I’m Hemasree Shanmugam 👋

Senior Software Engineer – EvidenceCare(SaaS | Product | Series B | HealthTech)

2022 - 2025

• Developed and maintained complex web applications in a product-based environment, working across multiple enterprise apps with a focus on performance scalability, and maintainability using React, TypeScript and Node.js
• Implemented scalable state management with Redux Toolkit, using slices, reducers, async thunks, middleware, and selectors resulting in a 40% decrease in bugs related to state inconsistencies and better team onboarding through cleaner architecture.
• Built advanced routing architecture using React Router v6, implementing features like nested routes, route based data loaders, error elements, and app level loaders to support dynamic, improving route-based data fetching reliability and reducing navigation-related errors by 25%.
• Developed 25+ reusable components for a private shared component library system used across all company products, using Styled Components, Material UI, TailwindCSS, custom themes, and Storybook helping ensure brand consistency and cutting UI development time by 35%.
• Diagnosed and resolved critical production issues, reducing mean time to resolution (MTTR) by 40% through proactive log monitoring, root cause analysis, and collaboration with cross-functional teams.
• Delivered full-stack features end-to-end from sprint planning to production based on detailed user stories and acceptance criteria.
• Designed and implemented backend services, including database schemas, migrations, secured API routes, and controller logic, improving data access reliability and maintainability.
• Collaborated with cross-functional teams including product owners, architects, and QA to ensure high-quality deliverables aligned with business goals.

Software Engineer – The Mosaic Company

2015 – 2021

• Developed responsive web applications and SPAs using React and JavaScript frameworks, delivering tailored solutions across multiple client environments.
• Built custom knowledge portals and onboarding platforms, boosting internal engagement and reducing employee ramp-up time.
• Refactored and modernized legacy codebases, improving performance, maintainability, and cross-browser compatibility across enterprise systems.
• Partnered with project managers and client stakeholders to define technical milestones, ensuring on-time delivery of high-visibility projects..
• Adapted to diverse tech stacks and business domains, providing subject matter expertise and frontend leadership on cross-functional teams.

Systems Engineer – Infosys Ltd

2009 – 2013

Worked on web-based enterprise solutions using ASP.NET, C#, and SharePoint for Fortune 500 clients. Collaborated with global teams to deliver scalable, client-specific functionality. Contributed to code reviews, testing, and knowledge sharing.