# Tyler Freitas

> Software Engineer | ex-Meta

Location: Belmont, California, United States
Profile: https://flows.cv/tylerfreitas

## Work Experience
### Senior Software Engineer @ HubSpot
Jan 2026 – Present

### Software Engineer @ Meta
Jan 2022 – Jan 2025 | Menlo Park, California, United States
• Designed and implemented a system to control the number of successfully delivered marketing emails using Hack and Dataswarm (data pipeline tool). Improved email reach rate from 70% to 90%.

• Drove implementation of standardized API for Page level experimentation on web client using Hack and React resulting in an efficiency gain of 8.7 engineering years saved. 

• Improved web client performance by refactoring datafetching to follow a render-as-you-fetch pattern using React, Relay and Hack. Resulted in 20% reduction in page load latency.

• Implemented integration of in-house marketing software with standardized experimentation platform using Hack and React, which reduced marketing experiment readout time from 7 days to 1 day.

• Led implementation of new UI for business messaging client using React in collaboration with product and design stakeholders. Used A/B testing to guide iteration and selection of the best UI variant.

• Built tool that enabled marketing configuration updates via user friendly UI instead of requiring manual edits to configuration files using React, Relay and Hack.

### Senior Software Engineer @ GYANT
Jan 2019 – Jan 2022 | San Francisco Bay Area
• Tech lead for development of new platform feature that enables users to initiate asynchronous visits with their doctor using Node.js,  MongoDB, HL7 CDA, and Direct Messaging

• Provided >1m users with coronavirus advice based on their specific risk factors by building advice engine service using Node.js and MongoDB

• Built microservice that generates health summary notes from patient symptoms using TypeScript, NestJS, and MongoDB and deployed to Kubernetes cluster using Travis CI CI/CD process

• Functioned as go-to person for debugging issues that span multiple microservices with mastery of complete code base and tech stack

• Scaled up Kubernetes cluster and optimized services to handle discrete spikes of >100x the normal number of users

• Refactored several legacy microservices and added unit tests to improve reliability and code quality using Node.js and Jest

• Implemented administrative tool for performing CRUD operations on database collections using Node.js, MongoDB, Bootstrap, and jQuery. Used daily for content development by GYANT’s product team

### Software Engineering Intern @ GYANT
Jan 2018 – Jan 2019 | San Francisco Bay Area
• Implemented web page that displays output of administrative tool test results in a user friendly format using HTML, jQuery, Bootstrap, Node.js, and Express.js

• Wrote Python script for identifying unused database documents to enable garbage collection using Python and MongoDB

### QC Associate @ Fluidigm Corporation
Jan 2016 – Jan 2017 | South San Francisco
• Responsible for verifying product quality and maintaining laboratory equipment

### Co-Op Early Stage Cell Culture @ Genentech
Jan 2015 – Jan 2016 | South San Francisco
• Performed experiments and documented procedures in electronic notebook

### Undergraduate Researcher @ UC Davis
Jan 2014 – Jan 2015
•	Fabricated microfluidic devices to be used for culturing mouse embryonic stem cells.


## Education
### BS in Biomedical/Medical Engineering
University of California, Davis
Jan 2012 – Jan 2015

### BS in Computer Science
Oregon State University
Jan 2018


## Contact & Social
- LinkedIn: https://linkedin.com/in/tyler-j-freitas

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