Hari Rajagopal
Staff Software Engineer at DoorDash
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolHari Rajagopal is a Staff Software Engineer based in San Francisco with 11+ years building cloud-native, large-scale distributed systems and modernizing legacy architectures at FICO and AWS. He has led teams of up to 40 engineers, driven platform migrations to Kubernetes and serverless, and delivered measurable cost and performance wins—such as a 25% infrastructure cost reduction in EMR Managed Scaling and 50% faster app launches in App Runner. A prolific inventor, Hari holds nine patents across serverless, auto-scaling, and big data, and he writes technical blogs sharing practical operational insights. He contributes to notable open-source AWS projects like aws-saas-boost and aws-lambda-extensions, helping simplify SaaS deployment and extend Lambda capabilities. Known as a hands-on mentor and cross-functional leader, he excels at translating business needs into resilient, future-proof architectures. An interesting detail: beyond high-level architecture, he still dives into CI/CD, build scripts, and front-end fixes, showing a full-stack engineering curiosity.
11 years of coding experience
18 years of employment as a software developer
Bachelor's degree Computer Engineering, Bachelor's degree Computer Engineering at PSG College of Technology
English, Tamil
Stackoverflow
16reputation
776reached
2answers
0questions
Github Skills (22)
aws-lambda10
saas10
java10
javas10
go10
aws10
aws-cli10
dynamodb9
aws-cloudformation9
amazon-dynamodb9
http8
amazon-efs7
cicd7
dockers7
docker7
Programming languages (9)
Github contributions (5)
aws-samples/aws-lambda-extensions
Dec 2020 - Aug 2021
A collection of sample extensions to help you get started with AWS Lambda Extensions
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:15 reviews, 12 commits, 13 PRs in 7 months
Contributions summary:Hari contributed to the development of Java-based Lambda extensions, demonstrating expertise in building and deploying extensions for AWS Lambda. They created an example Java 11 extension with associated code, including registration, event handling, and error reporting functions. The user also worked on build and deployment scripts using Maven and AWS CLI, illustrating their involvement in the CI/CD process and cloud infrastructure configuration. Furthermore, the user contributed to caching data from parameter store and dynamodb using Lambda Extensions.
lambda-extensionsget-startedaws-lambdaserverlessextensions
awslabs/aws-saas-boost
May 2021 - Jun 2021
AWS SaaS Boost is a ready-to-use toolset that removes the complexity of successfully running SaaS workloads in the AWS cloud.
Role in this project:Backend & Cloud Engineer
Backend & Cloud EngineerContributions:1 review, 11 commits, 5 PRs in 1 month
Contributions summary:Hari primarily focused on enhancing the SaaS Boost installation process and addressing related issues. They implemented pagination for listing exports and updated the QuickSight user retrieval process. Furthermore, the user fixed a PowerShell configuration issue and modified the front-end code related to EFS mount points. They also made changes to integrate a new logo and AWS Console Links in the UI.
complexityaws-cloudworkloadscloudsaas
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.