Open to opportunities

Joseph Cho

@josephcho

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Front-end engineer specializing in React and scalable frontend systems.

United States

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What I'm looking for

I seek a collaborative engineering role focused on front-end systems, technical leadership, scalable architectures, mentorship opportunities, and measurable product impact.

I am a front-end engineer with extensive experience building and migrating complex React-based interfaces at scale, leading small teams, and optimizing CI/build pipelines. At AWS I led a cross-codebase migration that simplified bundled assets by 60% and improved build efficiency by over 50% through a robust build matrix.

I have a track record of improving user retention and real-time interactions—integrating WebSockets, Stripe payments, and visualization-heavy pages—and I mentor engineers, lead code reviews, and drive product-focused technical work that supports business outcomes.

Experience

Work history, roles, and key accomplishments

Current

Front End Engineer

Current

Amazon Web Services

Jun 2021 - Present (4 years 4 months)

Led a team of 4 to migrate Glue DataBrew into Glue Studio, simplified bundled assets by 60%, optimized CI to improve build efficiency by over 50%, and implemented polling orchestration for pages with heavy visualizations.

React JavaScript TypeScript CI CD AWS CodeBuild Performance Optimization

Interview Engineer

Karat

Aug 2021 - Nov 2022 (1 year 3 months)

Conducted standardized technical interviews and screenings for intern candidates and provided detailed performance assessments and hiring recommendations.

Technical Interviewing Candidate Assessments Behavioral Evaluation Reporting Communication

Front End Software Engineer

Vroom

Nov 2019 - Jun 2021 (1 year 7 months)

Integrated Stripe payments and WebSockets into core React apps, designed car appraisal workflows that improved user retention by 70%, and mentored new engineers while leading code reviews and estimations.

React JavaScript Stripe WebSockets User Retention Frontend Architecture Mentoring Code Review

Software Developer

MackeyRMS

Mar 2016 - Oct 2019 (3 years 7 months)

Led redesign of company website and drove React adoption, built Chart.js visualizations and custom dashboards for clients including finance users, and served as primary developer supporting sales and account teams.

React JavaScript Chart.Js Frontend Development UI UX Dashboard Development client support

Data Integration Engineer

Arcadia Solutions

Sep 2014 - Nov 2015 (1 year 2 months)

Expanded mapped EHR vendor databases by over 30% while ensuring HIPAA compliance, improved code review processes to follow Git best practices, and managed processing of sensitive patient billing data.

T SQL Pl SQL Data Integration HIPAA ETL Code Review

Education

Degrees, certifications, and relevant coursework

Boston University

Bachelor of Science, Health Science

2010 - 2014

Activities and societies: Dean's List; Korean Student Association

Completed a Bachelor of Science in Health Science with a minor in Public Health, participated on the Dean's List and in the Korean Student Association.