• Python
• Web crawler (selenium and requests)
• Organize web crawler results (beautifulsoup)
• Data ETL
• Simple web (flask)
• Simple LineBot for setting notifications (Django and linebot)
• Create numerous AWS CloudWatch alarms (boto3)
  
• Auto run numerous Weka models and organize results to tables
  
• Auto send data, get results, and organize results to tables for Pse-in-one 2.0
  
• Switch amino acid to representing values based on AAindex rules
  
• Rasa actions 
• Create independent environment (venv)
• Test chatbot NLU model performance (psycopg2, pandas, requests)
• Change chatbot old format to new format
• Remote reboot host while ssh does not work (SimpleHTTPServer)
• Machine Learning
• Do feature encoding for data with related informations
• Build prediction models with LibSVM, Weka, MLP, CNN, RNN, LSTM
• Keras and Tensorflow for building models
  
• Do independent tests, cross validations, and case study for models
• Evaluate models with ACC, AUC, MCC, F1, Sensitivity (Sn), and Specificity (Sp)
• Modify number of iterations (epochs) and batch size for optimizing models
• Set early stopping to avoid overtraining
  
• Modify pooling size, learning rate, kernel or filter size, and dropout rate for optimizing models
• Modify activation functions, optimizers, and loss functions for optimizing models
• Modify number of hidden layers and number of activation units for optimizing models
• Modify LibSVM code for adding additional evaluation metrics (C)
  
• Scikit-learn for drawing ROC curve and calculate
  
• Rasa framework for chatbot
• AWS
• IAM (create users for customer's consulters, create roles for aws services, and create policies for users or roles based on least privilege)
• VPC (create subnets, set route table, set NAT gateway, create endpoint, and create Client VPN)
• EC2 (write user data, set security group, add hosts, install and set cloudwatch agent, set auto start and stop, change a hostname, change a password, add to an AD, create images, set lifecycle manager, set auto backup for Microsoft SQL Server database, and set related setting for connection)
• S3 (create buckets, set bucket policies, and set lifecycle managements)
• ELB (set listeners, edit listener rules, target groups, and set security group)
• ECS (set task definitions, create clusters, set services, connect load balancers, and set auto scaling)
• CloudWatch (create dashboards and set alarms)
• QuickSight (design simple dashbroads, create datasources, and design datasets)
• Lambda (set Client VPN whitelist, auto refresh QuickSight, and create numerous CloudWatch alarms)
• Systems Manager (set auto start and stop EC2, set auto reboot EC2, and reset EC2 password for forgetting password)
• WorkSpaces (create workspaces, create images, create bundlers, and set IP access controls)
• SDK (AWSCLI, AWSPowerShell, and boto3)
• WAF (basic setting and modify AWS-managed rules)
• Route 53 (basic setting and manage forwarding rules)
• CloudFront (basic setting and set security header)
• Host Management
• Prometheus and Grafana for monitor (CPU, Memory, GPU, Disk Write/Read, Disk available bytes, Service status)
• Node-RED for scheduler
• Nginx for reverse proxy
  
• Docker for runtime environment and database
  
• Openvpn server management
  
• Account management for hosts and applications
  
• Database management for PostgreSQL and MongoDB
• Write some scripts to backup system and application logs
  
• Update OS to latest version and make sure services are all right (Ubuntu)
• Integrate the old version framework and the latest version OS (Ubuntu)
• Reinstall the latest version OS and build product environment (Ubuntu)
• Fix weak points from source code analysis and vulnerability assessment reports
• Deploy new version product to test and production environment
• Windows PowerShell (AWS)
• Write a script to connect to EC2 in a private subnet for customers
• Write a script to download files from S3 for customers
• Write a script to upload backup files to S3 and delete local backup files for customers
• Linux Shell (AWS)
• Write a script to download files from S3 for customers
  
• Write a script to upload backup files to S3 and delete local backup files for customers

Chatbot Product

• Customization training data
• Customization functions
• Management Platform (switch bot status, produce reports,etc)
• Bot (Q&A, Multi-turn dialogue, element, button)
  

Optimize Chatbot Product

• Research the latest version framework
• Research different component performance
• Redesign product framework
• Research automation
• Research monitor and alert

Payment Flow Cloud Architecture

• ECS and EC2 for deploying server
• Route 53 and ELB for allocating traffic
• WAF for API and DB security
• CloudFront for security header
• CloudWatch for monitoring
• IAM for necessary permissions
• VPC for networking

SAP B1 + HANA Cloud Architecture

• EC2 for deploying HANA DB
  
• WorkSpaces for B1 client connection
• Nginx for web connection
• S3 for storaging backup and software
• Lambda for client vpn whitelist
  
• CloudWatch for monitoring
• IAM for necessary permissions
• VPC for networking 

SAP B1 + SQL Server Cloud Architecture

• EC2 for deploying SQL Server DB 
• WorkSpaces for B1 client connection 
• Nginx for web connection 
• S3 for storaging backup and software 
• CloudWatch for monitoring 
• IAM for necessary permissions 
• VPC for networking