Finance Platform (using Kafka, HDFS, Cassandra, Golang, Elastic search)
Data Processing Platform, ETL (using mysql, python, celery, Lambda, Golang)
Real Time Metric Query Services (using Cassandra, Elasticsearch)
Rules Engine (AST evaluator, node, golang, python)
Distributed Services (using Kafka, Thrift, Mesos, Docker)
Golang Toolings (Golang)
Frontend (nodejs, react, redux, graphql, react-native)