Harshad Ranganathan

Summary

Java Developer with 7+ years of experience in design, development and maintenance of Enterprise applications. During my career, I have worked in Developer, QA, Automation, Cloud Enablement and Tech Lead roles. Passionate about learning new technologies, trends and being innovative at work.

Resume Skills

Certifications

Work Experience

Optum

(2020 - Current)

Position: Lead Software Engineer

 Mar 2022 – Current

 County Dublin, Ireland

• Leading a Public Cloud Infrastructure Enablement Platform team of 5 engineers geographically distributed across 3 regions composed of FTEs and Contractors.
• Architecture Design, Consultation & Support across various initiatives such as Multi-Region enablement, EKS upgrades, Cost Optimization, Well-architected design and Cloud Migrations.
• Facilitating cross-collaboration calls with 3 teams operating in different AWS accounts and also with Tech Leads of 3 internal Platform teams.
• Team mentoring, Bi-weekly connect sessions with every team member, Listening to team feedback and Monthly Learning Sessions to spread knowledge across the organization.

Design Architecture Listening to Feedback Collaboration Leading the Team

Position: Senior Software Engineer

 Apr 2021 – Feb 2022

 County Dublin, Ireland

• Set up Istio Service Mesh for the API EKS Cluster for utilising observability and traffic management capabilities.
• Simplified EKS Ingress pattern from having NLB per app (resulting in 10 NLB per cluster in early stages of migration) to 1 ALB per cluster saving on costs and easier maintenance.
• Enabled ALB based authentication for 8+ internal web apps thereby securing and achieving SSO.
• Designed CI/CD approach for cloud deployments by working with CI/CD guild members reaching wide consensus and roll-out across various projects.
• Built alerting solution for the platform on top of Prometheus and Grafana by utilising Alert Manager component.

AWS EKS Terraform Istio CI/CD Prometheus

Position: Software Engineer

 Oct 2020 – Mar 2021

 County Dublin, Ireland

• Built out AWS infrastructure for the entire platform which consisted of 6 EKS clusters, MSK (Kafka), Aurora, ElasticSearch, API Gateway, Cognito, Route53 and other AWS services per environment.
• Built out Multi-Cluster monitoring using Prometheus and Thanos with S3 for long term metrics storage.
• Organized numerous AWS JAD (Joint Application Design) sessions for capturing requirements, design and important decisions about infrastructure build-out.
• Designed patterns for Terraform and Helm charts to enforce reusability and ease of maintenance of IaC.

AWS EKS Kafka Terraform Helm Prometheus Thanos

Cognizant

(2014 - 2020)

Position: Associate

 Jan 2017 – Oct 2020

 County Dublin, Ireland

• Built RESTful API's using Spring Boot with DynamoDB as data access to achieve 300 ms SLA.
• Built RESTful Search API's with ElasticSearch as data access.
• Developed ETL pipelines to ingest more than 10 TB data to DynamoDB and ElasticSearch databases using Apache Spark (Scala).
• Built Serverless website using S3, API gateway and Lambda to aid in feature deployment and testing activities.
• Built Terraform modules to manage AWS infrastructure for 10+ projects.

Java Spring Python Scala Spark ElasticSearch AWS

Position: Programmer Analyst

 Jun 2015 – Dec 2016 (1 yr 7 month)

 Chennai Area, India

• Developed micro service applications using Apache Camel.
• Built test automation framework using JBehave to validate 20+ REST API services.
• Built test automation framework to validate 2,00,000 row key data in HBase.

Apache Camel JBehave AWS

Position: Programmer Analyst Trainee

 Jun 2014 – Jun 2015 (1 yr 1 month)

 Chennai Area, India

• Built SoW (Statement of Work) Spring MVC application for internal account usage.
• Semantic Integration of more than 50 sources using Common Data Modelling, Mapping and Translation with DXSI tool.
• Deployment of applications to Oracle Service Bus.

Spring MVC DXSI

Open Source Projects

Covid-19 Tracker App

 Mar 2020

Flutter based app to track number of people recovered from Covid-19 infection across the world.

https://github.com/HarshadRanganathan/covid_19_tracker_app

Flutter

AWS EMR Launcher

 Jan 2020

Generic python library that enables to provision emr clusters with yaml config files (Configuration as Code).

https://pypi.org/project/aws-emr-launcher/

Python

MS Teams

 Apr 2019

Python helper library to construct microsoft teams connector card messages.

https://pypi.org/project/ms-teams/

Python

Messenger Bot for Tracking Current Processing Dates of Stamp4 Support Letter/Work Permit

 Aug 2018

Track current application processing dates for employment permits and support letter processed by the Department of Business, Enterprise and Innovation.

https://m.me/dbei-bot

Node JS Express LowDB Jest

GNIB Visa App

 Feb 2018

App that helps to find appointment slots for GNIB (Irish Residence Permit) and Re-Entry Visa without hassle.

https://gnib-visa-app.rharshad.com

React Redux Nginx Webpack Babel

MEAN Stack App

 Dec 2017

Task Manager application built on a client-server model using MEAN (MongoDB, Express, AngularJS & NodeJS) stack.

https://github.com/HarshadRanganathan/mean-nw-app

Angular 1.3 Node Webkit SocketJS LdapJS Express JWT MongoDB

Courses

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Profiles

Other Skills