• Provisioned an easily managable hybrid infrastructure(Amazon AWS + On-premise) utilizing IaC(Infrastructure as Code) tools like Ansible, Packer and Terraform. • Built fully automated CI/CD pipelines on CircleCI for containerized applications using Docker, AWS ECR and Rancher. • Designed an overall service architecture and pipelines of the Machine Learning based Fashion Tagging API SaaS product with the micro-services architecture. • Implemented several API microservices in Node.js Koa and in the serverless AWS Lambda functions. • Deployed a centralized logging environment(ELK, Filebeat, CloudWatch, S3) which gather log data from docker containers and AWS resources. • Deployed a centralized monitoring environment(Grafana, InfluxDB, CollectD) which gather system metrics as well as docker run-time metrics.

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• Implemented RESTful API server for car rental booking application(CARPLAT in Google Play). • Built and deployed overall service infrastructure utilizing Docker container, CircleCI, and several AWS stack(Including EC2, ECS, Route 53, S3, CloudFront, RDS, ElastiCache, IAM), focusing on high-availability, fault tolerance, and auto-scaling. • Developed an easy-to-use Payment module which connects to major PG(Payment Gateway) companies in Korea.

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• Reformed the society focusing on software engineering and building network on and off campus.

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• Developed in Cocos2d-x an action puzzle game(Dragon Buster) targeting U.S. market. • Implemented API server which is communicating with game client and In-App Store, along with two other team members who wrote the game logic, designed game graphics.

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