Elizabeth Hale

Senior Software Engineer

San Francisco, California, United States12 yrs 2 mos experience
Highly Stable

Key Highlights

  • 10+ years of experience in full-stack engineering.
  • Expert in designing high-throughput APIs.
  • Focused on AI/ML tooling development.
Stackforce AI infers this person is a Full-Stack Engineer specializing in SaaS and AI/ML development.

Contact

Skills

Core Skills

Ruby On RailsReact.jsGraphql

Other Skills

RubyGitHubREST APIsTypeScriptCollaborative Problem SolvingPythonJavaScriptCSSHTMLNatural Language ProcessingWeb DevelopmentGitMachine LearningUnit TestingjQuery

About

Senior full-stack engineer with 10+ years building developer tools at scale. Deep experience designing high-throughput APIs and performance-critical systems used by millions. Now focused on tooling for AI/ML development: evaluation frameworks, model observability, and drift detection.

Experience

12 yrs 2 mos
Total Experience
2 yrs 3 mos
Average Tenure
--
Current Experience

Kit (formerly convertkit)

Senior Software Engineer

Nov 2024Sep 2025 · 10 mos · Remote

  • Implemented IP pool-level tracking domain replacement system during active global email migration, achieving zero impact to existing operations while delivering tooling to migrate 1.3B+ emails across multiple IP pools with percentage-based rollouts, granular admin controls, and comprehensive audit logging.
  • Led a critical stabilization project that reduced overall query volume for a key system by 38% (from 8-9M queries to 5-5.5M queries per hour at peak volumes), improving platform efficiency while maintaining core functionality.
  • Collaborated with a team of 3 engineers to strategically relocate app creation tools from the settings page to the Kit App Store. This initiative increased visibility for app creation, allowed for greater flexibility in future extensibility and configuration options, and aimed to boost usage of the Kit App Store.
  • Revitalized and optimized GitHub Codespaces development environment for the engineering team, resolving persistent configuration issues, updating critical environment variables, and ensuring development containers properly reflected the application's current Ruby version. Authored comprehensive documentation to streamline onboarding and usage, resulting in substantially improved reliability.
React.jsRuby on RailsRuby

Trail mavens

Co-Leader

Aug 2017Jan 2019 · 1 yr 5 mos

Github

Senior Software Engineer

Jan 2016Apr 2024 · 8 yrs 3 mos

  • Built developer-facing features for Code Scanning, GitHub’s security scanning product, as part of a small team integrating Semmle (makers of CodeQL) post-acquisition. Focused on making advanced security analysis accessible and actionable for developers, contributing to enablement on over 100k repositories as part of GitHubAdvanced Security.
  • Created the UI for GitHub Advisory Database, a public security vulnerability database that helps developers discover and remediate security issues in their dependencies. Built developer-facing interfaces for browsing, searching, and understanding security advisories across the open-source ecosystem.
  • Worked on a 3 person team to build the Checks API and user experience. This feature allows integrators to run powerful checks against the code changes in a Repository. Led the project from Beta to General Availability. The Checks API serves as the foundation for Actions and receives over 30 million requests a day.
  • Introduced a new access pattern, fine-grained personal access tokens, to a high traffic API (the GitHub
  • GraphQL API) that sees over 6500 requests a second. This provides integrators with a more secure programmatic access token type.
  • Co-led a cross organization project to improve developer friction caused by flaky tests. Reduced the number of failed builds on master due to flakes from 10% to 2% which improved developer velocity (fewer developers needed to re-run CI due to flakes before deploying). Improved automated flake detection from 25% to 85% (developers no longer needed to manually identify failing tests as flakes).
  • Promoted to Senior Software Engineer April 2020
GitHubRuby on RailsRubyGraphQLREST APIsTypeScript

Perforce software

Software Engineer in Test

Jun 2014Dec 2015 · 1 yr 6 mos · Alameda, CA

  • Developed testing strategies after consulting with User Experience, Product Management, and Development
  • Mitigated risks for products in various stages of development from alpha versions to public releases
  • Created and executed automated software test plans, cases and scripts to uncover, identify, and document software problems and their causes
  • Wrote accurate and thorough reproduction steps and descriptions for all found bugs
  • Served as a user advocate by continually learning about the users' needs and workflows and creatively applied this knowledge my testing
  • Created and maintained documentation on company wiki to communicate risks, testing strategies, and milestones to key stakeholders

Mike's bikes

Operations Manager

Nov 2012Jan 2014 · 1 yr 2 mos · Sausalito, CA

  • Implemented strategies to resolve inventory discrepancies cutting shrinkage in half and saving the store over 100k a year
  • Maintained an accurate database and linked the store to the company's product supply chain
  • Executed directives from purchasing, merchandising, and sales
  • Worked with the General Manager to provide day-to-day operational support

Uc santa cruz

2 roles

Annotator

May 2010Oct 2010 · 5 mos · Santa Cruz, CA

  • Collaborated with researchers to build a corpus annotated for persuasion
  • Annotated blog posts for persuasive language by identifying predetermined tactics (such as scarcity and deontic appeal)

Instructional Assistant

Jan 2010Jan 2010 · 0 mo · Santa Cruz, CA

  • Assisted the professor of an upper division linguistic class (Syntax II)
  • Evaluated student participation and knowledge of the material
  • Held office hours and helped deliver course materials

Education

University of California, Santa Cruz

Bachelor's Degree — Theoretical Linguistics

Jan 2008Jan 2010

Apparel Arts

Pattern Drafting and Construction

Jan 2011Jan 2013

California School of Culinary Arts

Culinary Arts/Chef Training

Jan 2002Jan 2003

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