# Premkumar D.

> Lead Software Engineer @ Rally Health | React.js, GraphQL, AWS

Location: Dublin, California, United States
Profile: https://flows.cv/premkumar

At Rally Health, our team has revolutionized customer engagement by developing adaptable web components, enabling seamless interactions with healthcare professionals. This innovation serves esteemed clients like Apple and Disney, ensuring they receive a customized experience that resonates with their distinct brand identities.

My leadership in transitioning a key cost-estimation tool to contemporary frameworks and cloud infrastructure has not only optimized our operations but has also established rigorous coding standards across the company. With a steadfast focus on automation, we've implemented GitHub actions that streamline our continuous integration and deployment processes, significantly enhancing our efficiency and reliability in the health tech sector.

## Work Experience
### Senior Software Engineer @ Rally Health
Jan 2020 – Present | Remote
- Led development of a high-traffic React-based chat platform, reducing phone-based interactions by 12% and improving digital engagement.
- Architected a scalable frontend for a global cost estimation tool, ensuring system reliability for millions of sessions per month.
- Optimized React applications, improving page load speeds by 30% via Webpack optimizations, lazy
loading, and CDN caching.
- Integrated GraphQL with Apollo, reducing API payload size by 40%, enhancing data-fetching efficiency.
- Spearheaded accessibility compliance (WCAG 2.1).
- Mentored & led a team of 6 frontend engineers, defining best practices in code reviews, performance
tuning, and testing.
- Developed LLM-powered code review and on-call automation agents using Datadog, Splunk, LangChain, OpenAI
- Created an AI-powered feature flagging system to dynamically adjust application behavior.

### Senior Site Reliability Engineer @ Amount
Jan 2020 – Jan 2020 | Chicago, Illinois, United States

### Senior Software Development Engineer @ Morningstar
Jan 2018 – Jan 2019 | Greater Chicago Area
* Replatforming legacy web application to new Full stack in Vue.JS and Ember
* Migrating on-prem infrastructure to AWS cloud using CI pipeline.
* Optimize daily data loading job that does custom Account Imports from Vendor.
* External integration with SalesForce and DocuSign

### Senior Software Engineer @ Morningstar
Jan 2016 – Jan 2018 | Greater Chicago Area

### Senior Software Engineer @ Avco Consulting, Inc
Jan 2014 – Jan 2015 | Boston

### Research Assistant @ Purdue University
Jan 2013 – Jan 2014


## Education
### Master's degree in Computer Science
Purdue University
Jan 2013 – Jan 2014

### Bachelor of Engineering (B.E.) in Computer Science
Anna University Chennai
Jan 2005 – Jan 2009


## Contact & Social
- LinkedIn: https://linkedin.com/in/premkumar-d-69b1a763

---
Source: https://flows.cv/premkumar
JSON Resume: https://flows.cv/premkumar/resume.json
Last updated: 2026-03-22