Evan Cho

g average lookup time from 1.8s to 420ms for 12,000 weekly queries. Built 86 unit tests with pytest and Jest, raising service coverage from 61% to 89% and catching regressions before release. Reviewed 24 pull requests with senior engineers and documented API contracts, reducing integration questions from partner teams by 30%. Instrumented structured logging and health checks that shortened incident triage by 25 minutes per issue.

Built reproducible Python and SQL data pipelines to clean and join 80,000+ student-survey records for a faculty project. Created Jupyter notebooks for exploratory analysis and visualization, reducing weekly data-prep time from 6 hours to 2 hours. Wrote validation queries and documentation that improved dataset consistency and made experiments easier for two graduate researchers to reproduce.

Mentored 35 students through weekly intro-CS labs covering Python, debugging, Git, and data structures, with average session feedback of 4.8/5. Hosted code reviews and office hours that helped students complete 18 portfolio projects and improve assignment completion by 22%. Collaborated with four peer mentors to create practice exercises and an onboarding guide for new chapter members.

Expected May 2027 · Relevant coursework: Data Structures & Algorithms, Database Systems, Operating Systems, Computer Networks, Web Development.

Built a responsive Next.js and TypeScript app that aggregates 120+ campus events from a PostgreSQL-backed API and supports keyword, date, and category filters. Added React component tests with Jest and deployed a Dockerized preview, cutting event discovery from several minutes of browsing to under 30 seconds in user testing.

Designed a FastAPI and PostgreSQL service with JWT authentication, CRUD endpoints, and OpenAPI documentation for tracking daily habits across 40 test users. Added pytest coverage, input validation, and Docker Compose local development; reduced median API response time to 110ms with indexed queries.