# Hunter Cassidy

> I feel the need—the need for speed.

Location: Danville, Virginia, United States
Profile: https://flows.cv/huntercassidy

Principal Software Engineer with a specialty in Javascript performance

## Work Experience
### Principal Software Engineer - Javascript Performance @ ClickUp
Jan 2025 – Present
Lead performance resource for company across frontend and backend. Brought in improve performance of frontend codebase and drive performance focus.
Improve code performance with evidence based approach using data collected from trace file and memory profile analysis. 
Strong understanding of performance of Javascript in various runtimes as well as deep understanding of debugging browser implementation code itself to find issues.
Perform code reviews across entire organization with an eye towards architectural and performance issues.
Hold performance office hours weekly and performance checking calls daily.
Provide detailed performance analysis and triage of incident and customer reported issues.
Building tooling to do advanced performance analysis of codebase.

### Staff Software Engineer - Javascript Performance @ ClickUp
Jan 2023 – Jan 2025

### Senior Software Engineer @ Datadog
Jan 2021 – Jan 2023 | Remote
Member of the Dashboard Core team with a focus on frontend performance engineering.
Building tooling to automate frontend performance analysis to prevent regressions from shipping to production.
Specialty in rapid performance analysis, debugging, and refactoring for various teams throughout the frontend organization.

### Senior Software Engineer @ Webflow
Jan 2018 – Jan 2021 | Remote
Worked to rewrite the "Style Panel" and style system that drives Webflow Designer.
Specialized in JavaScript performance debugging, benchmarking, and improvement.
Educated team in performance best practices ranging from benchmarking to runtime specific internal optimizations.

### Staff Software Engineer @ Walmart eCommerce
Jan 2016 – Jan 2018 | Remote
Helped architect and rewrite the Walmart Grocery frontend from Angular to React, redux, and Flow type.

### Software Engineer @ Mobelux
Jan 2015 – Jan 2016 | Richmond, Virginia Area
Two engineers from Jobaio joined Mobelux and noticed a lack of direction on the front end. I was contacted to join the team to ramp them on React and deliver projects with complex user interfaces.
Lead React development on multiple high-profile projects.
Taught team members modern React stack with multiple bootcamps
Upgraded company front end infrastructure with webpack, React, and Redux

### Software Engineer, Project Lead @ CaseNEX
Jan 2014 – Jan 2015 | Charlottesville, Virginia Area
introduced the team to Express to build API and web layers.
Lead migration to React/Flux from legacy jQuery and Handlebars.
Rewrote company single sign on service to be OAuth2 compliant.

### Full Stack Developer @ Jobaio
Jan 2014 – Jan 2014 | Richmond, Virginia Area
Startup that was trying to change the job seeker hiring process.
I used Ruby on Rails and JavaScript to build internal tooling to allow team members to categorize job seekers and match with job postings.

### Junior Software Engineer @ Royall & Company
Jan 2013 – Jan 2014 | Richmond, Virginia

### Teaching Assistant, Department of Computer Science @ University of Virginia
Jan 2011 – Jan 2013

### Web Developer @ Freelance Web Developer
Jan 2008 – Jan 2013


## Education
### Bachelor of Arts (B.A.) in Computer Science
University of Virginia
Jan 2009 – Jan 2013


## Contact & Social
- LinkedIn: https://linkedin.com/in/huwyca

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Source: https://flows.cv/huntercassidy
JSON Resume: https://flows.cv/huntercassidy/resume.json
Last updated: 2026-03-29