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Jonah Park

Junior Software Engineer
Austin, United States

Professional Summary

Junior Software Engineer with 3+ years of experience building reliable web products and internal tools with TypeScript, React, Node.js, and PostgreSQL. Delivered measurable improvements in application performance, release confidence, and customer workflows across SaaS and data-platform teams. Collaborative engineer known for thoughtful testing, pragmatic API design, and steady ownership from discovery through deployment.

Employment History

Junior Software Engineer
Hill Country SaaS Labs · Austin, TX
2024 · Present
• Shipped TypeScript and React features used by 18,000+ monthly users, increasing self-service task completion 31%. • Designed Node.js REST APIs and PostgreSQL queries that cut median dashboard load time from 2.8s to 1.4s. • Added 120+ unit and integration tests, raising critical-path coverage from 54% to 82% and reducing escaped defects 27%. • Partnered with product and support to triage 40+ customer issues per quarter and deliver weekly releases with 98% on-time completion.
Software Engineering Intern
Lone Star Data Systems · Austin, TX
2023 · 2024
• Built Python data-validation jobs processing 2.5M+ daily records, improving pipeline error detection by 38%. • Implemented React and TypeScript monitoring views that shortened incident diagnosis time by 22% for a five-person platform team. • Wrote PostgreSQL migrations and REST API tests that reduced release rollback incidents from 6 per quarter to 2. • Automated CI checks with GitHub workflows, cutting average pull-request review setup time by 45 minutes.
Web Developer (Part-time/Contract)
Capitol Code Collective · Austin, TX
2022 · 2023
• Delivered 14 responsive React websites for local organizations, increasing average mobile engagement 29% after launch. • Created reusable TypeScript components and accessible design patterns that reduced project build time by 20%. • Integrated Node.js services, REST APIs, and PostgreSQL-backed forms while maintaining 99.5% monthly uptime. • Coordinated requirements, demos, and handoffs with six small-business clients, earning 4.9/5 average feedback.

Education

B.S. Computer Science
University of Texas at Austin · Austin, TX
2020 · 2024
• Relevant coursework: Data Structures & Algorithms, Operating Systems, Database Systems, Software Engineering. • Capstone: built a TypeScript/Node.js campus resource scheduling tool adopted by three student organizations. • Dean’s List, 2022–2024; Texas Exes Computer Science Scholarship recipient.

Skills

TypeScript
React
Node.js
PostgreSQL
Python
Git
REST APIs
Unit Testing