# Patrick McGrath

> Lead Software Engineer at Klaviyo

Location: United States, United States
Profile: https://flows.cv/patrickmcgrath

## Work Experience
### Lead Software Engineer @ Klaviyo
Jan 2025 – Present
Lead software engineer and technical product owner on the groups data platform engineering team.

### Senior Software Engineer @ Klaviyo
Jan 2022 – Jan 2025
Senior software engineer on the groups data platform team. We own the segmentation offering at Klaviyo, enabling customers to quickly create dynamic groups of users based on a rich set of criteria.

The segmentation service that we built from scratch between 2022 and 2023 is currently processing tens of billions of segment membership updates each day.

### Software Engineer @ Klaviyo
Jan 2020 – Jan 2022

### DevOps Engineer @ Farelogix
Jan 2019 – Jan 2020
Led the architecture and implementation of the infrastructure monitoring tooling for the organization, monitoring 1,000+ servers, switches, and load balancers across a hybrid multi-cloud environment, using SolarWinds with a suite of custom tooling built with PowerShell, Jenkins, Django, Vue.js, Docker, RDS, and EC2

Built a custom deployment pipeline to configure application server monitoring across production blue-green deployments of immutable infrastructure, using Jenkins, Spinnaker, AWS, and PowerShell

### Data Engineer @ PlacePass
Jan 2018 – Jan 2019
Architected and implemented the automated deployment process for all product data using rotating Elasticsearch indices, Apache NiFi, MongoDB, and Python, enabling daily updates of products that were previously updated every month

Worked with the Director of Engineering to design and build the structure for data ingestion of product data, using Apache NiFi for data orchestration, MongoDB for state management, and Python for data transformations

Cut the data platform onboarding time of new partners in half by developing standardized config driven components

### Full Stack Software Engineer @ PlacePass
Jan 2017 – Jan 2018 | Boston, Massachusetts
Engineered countless new features on our customer facing Ruby on Rails application while performing thorough AB testing, helping to double our conversion rate

Built the marketing analytics suite on our platform using a hybrid of client-side and server-side tracking, collecting actionable data on millions of users using Google Tag Manager, jQuery, Mixpanel, and Ruby on Rails

### Owner, Founder, and Sole Manager @ Forgecraft Servers
Jan 2013 – Jan 2014
Created and managed two virtual servers that hosted an environment for gamers to play Minecraft with each other, using open source Java applications hosted on Linux servers, and achieving a 436% ROI

Hired, trained, and led a staff team of over 15 people to support our 6,500+ unique players


## Education
### Bachelor’s Degree in Computer Science
Khoury College of Computer Sciences

### High School
American School of Madrid

### High School
Weston High School


## Contact & Social
- LinkedIn: https://linkedin.com/in/patrickrmcgrath
- Portfolio: https://patrickmcgrath.io

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Source: https://flows.cv/patrickmcgrath
JSON Resume: https://flows.cv/patrickmcgrath/resume.json
Last updated: 2026-03-31