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Summary

Intensively Experienced Software Engineer with ability to create technology road-maps, balancing trade-offs with an understanding of the full stack. Continuous and active learner keeps track of industry-leading knowledge and challenges new problems. Effective Communicator harmonizes with stakeholders by tackling concerns and coming up with combined ideas.

Experience

Software Engineer, Ringle, Seoul South Korea

• Apr 2021 ~ Apr 2023
• Ringle Docs Project
  • Product Summary: Collaborative Document Editor replacing Google Docs with needs for custom features(feedback component) and facilitating data utilization.
  • Product ideation, setting up MVP, create technology road-map, On Websocket Backend(NodeJS) keep-alive(retrying), security, editing synchronization features implemented, Infrastructure setup to meet High Availability utilizing Redis as pub/sub queue, MongoDB
• Bite-Sized Feedback Project
  • Reference
  • Product Summary: Feature aiding learners to effectively review what they’ve learned from tutor by breaking down tutor feedback into learning unit, reminding periodically, providing practicing activities
  • Product ideation, setting up MVP, create technology road-map, Implementing features based on Batch Jobs
• NLP Modules
  • Grammar Error Checker
    • Usage: Learning Activity in Bite-Sized Feedback, and measuring component in CAF Project
    • My Contribution: Model Research, Test dataset collection, Packaging and serve as API
      • Due to heavy model running on CPU Instance(cost issue) and requirements for sub-real-time processing, manually implemented batch prediction with request queue pipeline(using ZeroMQ, python).
  • Complete Sentence Checker
    • Usage: Quality Assurance method for detecting insincere feedback sentences from tutors
    • My Contribution: Module Packaging as API and set up serving infrastructure
  • Phrase Extraction
    • Product Summary & Usage: Extracting various english phrases which are worth learning for L2 learners, used for Bite-Sized Feedback Project(as a learning unit)
    • My Contribution: With Python NLP Library(spaCy) ****implemented phrase extraction algorithm, Test data Collection, serve as API
• CAF Project
  • Product Summary: Analyzing L2 performance and proficiency based on Transcribed text
  • Packaging Resource-demanding Natural Language Processing based pipeline
  • Event Driven Architecture with AWS Event Bridge and Kubernetes Job
  • GPU Cluster Setup and Auto Scaling(AWS Spot Instance) for Cost Optimization
• Other Backend Features
  • Offline Tutor Event API(Redis Based Scoreboard, Logging Events)
  • Zendesk Help Center as a Content Management System
  • Stripe Integration
  • Efforts to identify and share technical debt with team and pay off
• CI/CD, Infrastructure
  • Capistrano based Cli for CI
  • Image Resizing Serverless Function
  • NextJS CircleCI Setup & Optimization(Build Caching, Cost Optimize)
  • Infrastructure Management Based on Terraform

Software Engineer, Wordbricks, Seoul South Korea

• Apr 2023 ~ October 2023
• Integrated LLM Management
  • Design interface for integrating LLMs from multiple providers
  • Design VectorDB components for RAG
  • Context-specific LLM parameter optimization and serving

Education

• Bachelor of Computer Science
  • Korean Advanced Institute of Science And Technology(KAIST), South Korea
  • School of Computing
  • 2020.02~2025.02
• Masters of Science
  • Seoul National University(SNU), South Korea
  • Interdisciplinary Program in Artificial Intelligence
  • 2025.02~2027.02