Open to opportunities

Alexander
Liu

Full-stack engineering leader with 12+ years shipping production systems in healthcare & fintech — from HIPAA-compliant platforms to internationally scaled React Native apps.

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12+
Years Experience
3
Companies
91%
Test Coverage
3
Global Markets
TypeScript React Native AWS HIPAA AI-Assisted Dev React Python CI/CD
Expertise

Skills & Technologies

Expert at leading high-priority technical projects end-to-end, systematizing engineering knowledge into reusable team assets, and leveraging AI-assisted workflows to accelerate delivery velocity.

⚛️

Frontend

ReactReact Native TypeScriptJavaScript ES6+ ReduxHTML5CSS/SASS
🐍

Backend & Infrastructure

PythonDjango REST APIsAWS KubernetesPostgreSQL
🧪

Testing & Quality

JestBDD Integration TestingBrowserStack GitHub ActionsCI/CD
🤖

AI-Assisted Development

ClaudeGitHub Copilot CursorPrompt Engineering
🏥

Compliance & Security

HIPAAPHI Handling Data Subject RequestsGDPR Workflows
🚀

Mobile & DevOps

App Store ConnectGoogle Play KotlinNew Architecture RNGit DependabotViteVercelSupabase
Career

Experience

12+ years building production systems across healthcare, fintech, and digital health — from co-founder to senior engineering leader.

Senior Software Engineer
Feb 2022 — Present
Click Therapeutics, Inc.
⚡
10× faster delivery: Led React Native upgrade v68→v78 using Claude Sonnet to scope multi-package dependency upgrades — reducing cycle from ~1 month of overtime to 2 days–2 weeks.
  • Led a 5-engineer squad through 3 regional launches of Rejoyn (US, UK, JP) over 5 years; served on-call to maintain a strict production record, rapidly triaging and fixing production incidents caught via Datadog by deploying next-day hotfixes followed by company-wide postmortems.
  • Led React Native upgrade from v68 → v78, migrating to Kotlin, enabling New Architecture, and implementing 16KB page-size support to meet Google Play mandates for apps targeting Android 15+; accelerated the timeline by using Claude Sonnet to scope multi-package dependency upgrades, cutting the upgrade cycle from ~1 month of overtime to 2 days–2 weeks.
  • Designed a locale-based and feature flag architecture that lets us ship region-specific builds for the US, UK, and Japan without forking logic or breaking other markets.
  • Built a BDD and integration testing framework in Jest from scratch, driving code coverage from 65% up to 91% and giving the team confidence shipping across three markets simultaneously.
  • Overhauled CI/CD pipelines, cutting build times by over 65% (from 30 minutes to 6–10 minutes); fixed unreliable tests causing false failures, and integrated Dependabot + BlackDuck to automatically surface and clear security vulnerabilities.
React Native TypeScript Jest / BDD Claude AI HIPAA AWS / kubectl Kotlin
Front-End Developer
Feb 2018 — Feb 2022
Money-Media (Financial Times)
  • Rebuilt the front-end ecosystem for major global financial publications (FundFire, Ignites, Agenda) using React and TypeScript, delivering a responsive, high-performance reading experience at scale
  • Designed and shipped a custom React-based WYSIWYG CMS, empowering editorial teams to manage and publish real-time financial headlines without engineering dependency
  • Built a full JSON-to-PDF pipeline with custom UI, enabling editors to dynamically generate branded hard-copy financial reports on demand
React TypeScript CMS PDF Pipeline Financial Times
Co-Founder & Full Stack Developer
Mar 2012 — Feb 2017
Treatspace Inc.
  • Built the full backend — APIs, database schemas, and HIPAA-compliant PHI handling — for a referral network platform that grew to 250+ providers and $3.5M ARR; based on referrals processed, the platform contributed to an estimated 273 lives saved.
  • Designed the entire system architecture and made every product call from day one — from schema design to UX decisions — taking it from MVP to a live, regulated healthcare product.
  • Built a full design system in SASS/CSS covering complex user profiles and data entry flows, so that non-technical users — doctors, office staff — could navigate a highly regulated product without hand-holding.
Django Python HIPAA / PHI Full-Stack Founder SASS/CSS
Background

Education

B.S. Electrical & Computer Engineering
Carnegie Mellon University
Class of 2012 · Pittsburgh, PA
Let's Build
Something Great

I'm always interested in new opportunities, challenging problems, and teams that care about quality. Reach out — I'd love to connect.

alexander.liu.tech@gmail.com (408) 857-3127 LinkedIn GitHub