Lead engineer team for Social CRM SaaS service development - Language/lib: nodejs, Parse server, rabbitmq, - DB: mongo, postgres, redis, dynamoDB - AWS: EC2, S3, ECS, ECR, VPC, ELB, cloudwatch, lambda, api gateway, dynamo db, route 53 - Other tools/service: Jira, confluence, slack, bitbucket

EOS, Ethereum(ETH) smart contract and backend development - Language/lib: solidity, c++, nodejs, python - Dev tools/service: remix, openzeppelin, eosfactory, - Ops tools/service: Jenkins, Docker, ansible

Responsible for media relationship maintain and business development for new media and AD placement.

Database query speed optimization (100x faster) - Tools/service: postgres Improve data pipeline stability - Tools/service: google pubsub, fluentd, bigquery, digdag, embulk Backend data query API development - Tools/service: google pubsub, google, bigquery, fluentd, influxdb, elasticsearch - Language/lib: graphql, scala, python

- AdPlay demo site (Horidashi game platform, http://horidashi.com/) - Team build and people management * Manage 10+ people include design, pm, developer, op. * Define management process include strategy plan, goal setting, regular sync-up, performance review.

Service Operation - Evaluate global IDC/server for hosting AdPlay service and go through the entire process of server mounting and service install/operation in JP IDC. * IDC: CHT, Nextlink, Softlayer, NTT, Techorus * Server: Gigabyte, supermicro - Public cloud service evaluation and operation * AWS: EC2, S3, beanstalk, container, cloud watch, lambda, api gateway, dynamo db * GCP: Compute, App Engine, Container, Storage, BigQuery, Data studio, Dataflow, Pub/Sub IT - Google apps for work, Jira, Slack, Quip, Domain, Wiki, Gitlab, NAS, Cisco switch/router - Build new office server room / network QA - Backend pressure test: Self-write api testing, ab, JMeter - Frontend auto/manual test: Cucumber, Selenium

Cloud System Director (Apr. 2015 ~ Dec. 2015) - Coordinate cloud architecture refactor to improve performance and scalability * Tools/service: Jenkins, Docker, kubernetes, redis, consul * Language/lib: Python, nodejs, go - Establish software devops process * Software development process, version control, document management, quality management. RD Manager (Oct. 2014 ~ Mar. 2015) - Coordinate 3 core AdPlay technology development * Streaming: Interactive streaming with low latency/bandwidth * Cloud: VM state management, App life cycle management * Virtual Mobile: Android emulation, GPU virtualization, IO redirection, APP compatibility. Cloud Engineer (Jul. 2014 ~ Sep. 2014) - Develop virtual mobile cloud platform based on OpenStack oslo framework * Language/lib: Python, OpenStack oslo, flask, flask-restful, eventlet, subprocess, rpcapi, sweager, click * Operation tools: Git, Debian package, Salt, shell script, rabbitmq, mongodb, zabbix, ELK. * Project management: Trello, redmine, Jira, Asana

Develop cross cloud VM live migration technology on OpenStack using openflow. - Tools/service: Openflow, openVswitch, iptables, libvirt, qemu, - Language/lib: Python, paramiko Develop SSVCS, a virtual cluster management service based on SSCloud - Language/lib: Python, MySQL, sqlalchemy, OpenStack API Project manager of UniCloud, an integrated project for system developed by our Lab - Tools/service: SSO, python-openID, oauth - Language/lib: Python, Django, Operation manager of SSCloud, an OpenStack based IaaS platform for academic research/education use. - Tools/service: Openstack, Zabbix, ganglia, puppet, LDAP, SNMP, VPN, VLAN Project manager - Participate in 15+ government projects as project manager/developer in Post-doc & Ph.D. student period. Jobs include proposal writing, developing, system integration, and report writing.