Seonglae Cho

AI Engineer who specializes in Web technology ✨

Work Experience

Project Lead Developer (2021.12 ~ 2022.9)

Lead developer of a web application project to draw vectors in 3D space.
Improved vector drawing speed to extract normal vectors of a surface using 3D point cloud data.
Integrated development experience of Mac, Windows, and GKE using Kubernetes on Rancher Desktop with a localized production stack (Redis, Node.js, InfluxDB, and Grafana).
Reduced build time by 70%, simplified dependency management, and merged Node.js-based repositories into a mono-repo.
Enhanced maintainability with unit testing (Vitest) and code coverage including frontend source code by mockup browser rendering.
Migrated Docker based application to GKE with a Google Cloud DevOps Award winning team.
Achieved real-time error notification (Slack) and task monitoring (Grafana Map dashboard) via logs in InfluxDB.
Boosted group dynamics by creating cross-team Slack channels for knowledge sharing.
Refactored C++ camera projection library to Rust which convert 3d point to a 2d point using lens information.

Software Engineer (2019.11 ~ 2021.12)

Arranged system architecture (Geoserver, PostGiS, Potree) for rendering thousands of 2D/3D vector data inside web app.
Obtained LiDAR sensor control of vehicles with Socket.io and real-time pointcloud rendering via three.js.
Raised precision of drone coordinate positioning with a tuning algorithm that uses the direction of landmarks in panorama photos.
Cut bandwidth and response time by 80% with multi-level caches (Redis, Nginx Cache, and Browser Cache).
Upgraded service reliability by migrating bare metal servers to OpenStack through building docker containers for apps.
Downsized Docker image from 1GB to 200MB using multi-stage builds which accelerated the deployment process.

2023.6 ~ 2023.6

QA AI who can provide answers with source documents made by LangChain and vector database.
Attained question answering AI by optimizing local inference performance by model quantization without requesting external API.

2023.3 ~ 2023.5

News article summarization AI by OpenIE5 and Sentence Transformer.
Combined extractive summarization and abstractive summarization.
Decomposed an article to semantic triples and recomposed sentences with the most important triples.

2020.6 ~ 2023.4

Optimized rendering of a 10,000-page web app using SSG and SSR (Next.js framework).
Saved 90% on server costs by migrating deployment environment from Okteto Kubernetes to Vercel.
Achieved 200 organic search visits per week (statistics from Google Analytics 4) by optimizing SEO (Google Search Console) and FCP.

2020.3 ~ 2020.10

Developed a touchscreen joystick that allows users to wander anywhere in 3D space.
Accomplished full screen web experience with pointcloud data served from Google Cloud Storage using PWA.

2019.10 ~ 2021.11

Solved the complexity of existing shortcut applications (Vim, Emacs) with an easier usage.
Increased universality to work in any software by letting the app run in the background.
Bound Electron and AutoHotKey by including AHK compiler in the installer which make AHK script run dynamically.
Added a smooth mouse control on keyboard by calling Windows mouse API DLL.

2017.3 ~ 2023.6

2022.9 ~ 2023.1

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