Experience

Systems Developer (DevOps)

Co-operators | Sep 2022 - Present | Remote, Canada

  • Reduced manual tasks by 40% and accelerated deployment cycles by 25% by designing and implementing automation processes using Python, Jenkins, GitHub Actions, and Playwright.
  • Deployed and delivered multiple crucial products with a 99.9% uptime rate, ensuring seamless integration and optimal functionality across platforms like Teamcity, Jenkins, and Linux VMs.
  • Migrated over 100 repositories from Bitbucket to GitHub, completing the project 2 weeks ahead of schedule and decreasing CI pipeline execution time by 18%.
  • Reduced infrastructure costs and improved scalability by 50% by decommissioning legacy systems and transitioning to container-based solutions using OpenShift, AWS, and Azure.
  • Enhanced security and API management by implementing Kong, OpenShift, and Vault, automating credential lifecycle and reducing manual secret rotation by 80%.

Frontend Engineer (Junior)

Grepp, Inc. | Apr 2022 - Jun 2022 | Remote, Korea

  • Developed an internationalization (i18n) system with automated translation using JavaScript and Vue.js, reducing manual translation efforts by 75%.
  • Collaborated with designers to deliver a new web service under tight deadlines, ensuring high-quality output through active participation in code reviews.
  • Increased test coverage from 5% to 80% by implementing unit tests and adhering to TDD practices with React Testing Library.

Projects

Agentic Unit Test Analyzer | The Co-operators

shorturl.at/ErVDC | Mar 2024 - Jun 2024

  • Engineered a POC Agentic Unit Test Analyzer using Azure OpenAI to automate unit test coverage analysis and generation for GitHub repositories.
  • Designed and animated a web frontend dashboard with TypeScript, SvelteKit, and GSAP.

Kokoro-TTS-Flutter | Github (Open Source)

github.com/yansigit/Kokoro-TTS-Flutter | May 2025 - May 2025

  • Enabled edge device deployment of Kokoro TTS by porting Python runtime to Dart (Flutter) and integrating ONNX for optimized performance.
  • Achieved a 40% reduction in inference time by integrating Int8 quantized model support.

Skills

Programming

  • Python
  • Golang
  • TypeScript
  • JavaScript
  • Dart
  • Java
  • C#

DevOps & Cloud

  • AWS
  • Azure
  • Docker
  • Kubernetes
  • OpenShift
  • Jenkins
  • GitHub Actions
  • CI/CD
  • Vault
  • Kong
  • Teamcity

Frontend

  • React (Next.js)
  • Vue.js
  • SvelteKit
  • Flutter
  • GSAP
  • Playwright
  • Selenium

AI & Machine Learning

  • PyTorch
  • Transformers
  • Generative AI
  • AI Agents
  • MCP
  • ONNX

Spoken Languages

  • Korean (Native)
  • English (Business)
  • Japanese (Business)

Education

Bachelor of Engineering, Information Technology

University of Ulsan, 2022

Nanodegree, Deep Learning

Udacity, 2021