・Web Assembly ・Recoil ・Storybook ・Jest ・Lerna BFF ・TypeScript ・Node.js ・NestJS ・Apollo Server BACKEND ・Rust (Tokio, tonic, Disel, axum, SeaORM) ・Node.js (Express, Fastify, NestJS) ・F# ・Go ALGORITHM ・Rust ・Python ・WebAssembly ・PyTorch ・LightGBM ・OpenSearch ・VertexAI ・Image Processing ・Data Science ・OCR GraphQL gRPC Infrastructure GCP, Kubernetes, Istio, BigQuery, Redash, Cloudflare, Datadog, MixPanel Event Bus Cloud Pub/Sub, RabbitMQ DevOps GitHub, GitHub Actions, CircleCI, ArgoCD, Kustomize, Helm, Terraform Selection of technologies to increase developer productivity (e.g. utilizing statically typed languages)