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Addison Chen

Lead Software Engineer

About Me

I'm Addison, an accomplished Full-Stack Engineer with a proven track record of delivering impactful features and driving engineering efficiency. With a Bachelor of Science from the University of Southern California, I've contributed significantly to the success of web applications at Upwards (formerly WeeCare) and Tradesy (acquired by Vestiaire Collective).

My expertise spans across JavaScript, TypeScript, React JS, PHP, and various testing frameworks. I'm passionate about implementing key features, managing teams, and leading strategic initiatives that result in substantial business growth and improved user experiences.

Professional Experience

Upwards (WeeCare) logo

Upwards (WeeCare)

Lead Software Engineer

Aug 2018 - Nov 2024

  • Implemented foundational web features that grew a VC funded seed startup to a successful Series B company with over $20MM ARR.
  • Led team developing backend services to scrape data from 42 licensing web applications, providing critical insights that enabled the company to expand its offerings and secure key contracts.
  • Led strategic SEO efforts resulting in Top-10 SERPs for thousands of pages and queries, achieving a 100X increase in organic traffic.
  • Authored foundation of backend code scaffolding and automatic client SDK generation from OpenAPI specifications.
  • Delivered core features leveraging OpenAI and Claude to evaluate public licensing reports and government subsidy programs.
Tradesy logo

Tradesy

Software Engineer

Oct 2015 - Aug 2018

  • Delivered impactful features for the Buying team, including 'Save For Later,' Google Ads integration, and a successful 'Invite Friends' referral program.
  • Elevated system quality by introducing caching layers and refactoring logic to repository and service layers.
  • Expanded Selenium UI tests from 160 to 660, ensuring comprehensive coverage across multiple platforms and browsers.
  • Served as primary support for the Jenkins CI/CD pipeline.
UBS logo

UBS

Registered Technical Service Associate

Jun 2013 - Mar 2015

  • Built and maintained application that programmatically generated client estate plans.
  • Collaborated with financial advisors and compliance department to build financial plans and solutions for clien distribution

Skills

JavaScriptTypeScriptReact JSPHPHTMLSASSJQueryYAMLCodeceptionPHPUnitSeleniumPuppeteerSQLRedisBrightDataAWSDataDogSentryOpenAIClaudeStripePlaidPayPalAffirmJenkins CI/CDSegmentGoogle AnalyticsGoogle Tag ManagerAmplitudeFacebook SSOLogin with Google

Education

University of Southern California campus

University of Southern California

Bachelor of Science

May 2013

GPA: 3.5

    References

    Kevin P.

    Kevin P.

    Lead Software Engineer - Mobile

    Upwards

    LinkedIn Profile

    Addison has demonstrated exceptional expertise in developing and delivering high-quality web and JavaScript app features that elevate user experiences. He excels at cross-functional collaboration, working closely with the mobile team to ensure client event and analytics tracking are aligned across platforms. Additionally, their contributions to product design, user acceptance testing, and smooth release processes have been invaluable in driving successful launches and impactful product outcomes.

    Saphira H.

    Saphira H.

    Director of Marketing

    Upwards

    LinkedIn Profile

    Addison was instrumental in professionally integrating key marketing tools into the web app, enabling seamless tracking and optimization. He consistently demonstrated a proactive approach by debugging issues and triaging work efficiently, ensuring minimal disruption to marketing operations. Their technical feedback on prospective features and opportunities was invaluable, helping to align engineering efforts with marketing goals and driving impactful results.

    Contact Me

    Location

    Los Angeles, California