/cvJoon Youl (Eric) Park
eric.joonyoul.park@gmail.com · +82-10-8909-6141 · github.com/eric-jy-park
EDUCATION
Yonsei University
B.S. in Computer Science
GPA: 3.71/4.30 Converted GPA: 3.90/4.50
Seoul, Korea
Mar. 2020 – Expected 2027
Relevant Coursework: Data Structures, Algorithm Analysis, Operating Systems, Computer Systems, Computer Networks, Database Systems, Cloud Computing, Compiler Design
RESEARCH EXPERIENCE
Proactive Horizontal Pod Autoscaling in Kubernetes
2026
- First-author manuscript in preparation on lightweight forecasting for proactive Kubernetes autoscaling.
- Preserved the standard HPA control equation while replacing reactive CPU signals with 5-minute-ahead forecasts from a multiple linear regression model.
- Designed a tunable τ–ϵ hysteresis policy to mitigate flapping and quantify cost–stability trade-offs.
- Trained and evaluated on Alibaba Cluster Trace 2018 using lag and rolling-window features; achieved R² > 0.92 on 3 of 4 applications and average replica savings of 42.7%–75.2%.
INDUSTRY EXPERIENCE
Riiid
Software Engineer
Seoul, Korea
Apr. 2023 – Aug. 2025
AI edtech company serving 2.5M+ learners; raised USD 250M in total funding, including USD 175M from SoftBank Vision Fund 2.
- Re-architected a latency-critical payments Geolocation API with Edge Functions, reducing response time from 1200ms to 200ms and improving uptime from below 95% to 99.9%.
- Identified rendering bottlenecks and redesigned the web delivery stack (ISR adoption, SSR reduction, and client data-fetching refactors), reducing product page load time from 5s to under 1s.
- Refactored query orchestration with TanStack Query, reducing average question load time from 2s to under 0.5s and improving exam-session stability.
- Drove end-to-end funnel performance optimization that increased monthly purchase conversion from 3.19% to 8.63%.
- Built a Delegate Router using next/compat/router to de-risk Pages-to-App Router migration, accelerating migration velocity by 300%.
- Led migration from Lottie-based to Rive-based avatars in Real Academy, reducing CPU usage by 62.5% and lowering app crashes by 90%.
OPEN SOURCE
Rive
Dec. 2024
- Contributed useStateMachineInputs to rive-react, simplifying multi-input state machine handling in React applications.
- Partnered with maintainers on architecture refinements that reduced computational complexity from O(nm) to O(max(n, m)).
AWARDS & HONORS
Higher Honor Scholarship, Yonsei University
Feb. 2026
1st Place, UCSD Qualcomm Institute Hackathon
Jan. 2026
1st Place, Korea University Hackathon
Aug. 2022
9th Place, ACM-ICPC Seoul Regional Preliminary Contest
Dec. 2024
10th Place, SUAPC Winter Contest (ICPC Rules)
Feb. 2023
LEADERSHIP & ACTIVITIES
President, Nexters – IT Club for Engineers and Designers
Jan. 2024 – Aug. 2025
Engineering Mentor, LIKELION
2025 – Present
Member, Morgorithm (ACM-ICPC Club)
2021 – 2025
Member, YCC (Yonsei Computer Club)
2022 – 2025
SKILLS
Programming: Python, C++, TypeScript, JavaScript, Linux, Kubernetes, Docker, AWS, Git
Spoken Languages: Korean (Native), English (Native; TOEFL iBT 116), Mandarin (Fluent; HSK 6)