Michelle Tsacheva

Created automated provisioning for the metrics system to AWS accounts and Kubernetes namespaces which requires only three steps to be executed. This kept us from creating potential snowflakes in over 300 accounts and namespaces. Afterwards, it was abstracted and re-utilized for 10 services by three teams.

At Amazon, I created an automated provisioning tool for an SNMP monitoring system, it saved approximately 8 hours of manual engineer work per install with about 200 installations scheduled in the following six months.

The tool was also used for base lining manually provisioned installs. It was designed to do everything from partitioning the disk, bootstrapping the system, and installing the deployment system client to post-install validation and updating dashboards after the new install. It supports remote hands mode for high-security networks, including GovCloud for the US Department of Defense and AWS Secret for the US Central Intelligence Agency.

At Amazon, I created a system that performs managed discovery and re-discovery of network devices and includes them in the SNMP monitoring system. This allowed us to increase the number of monitored network devices from a single host from 150 with vendor optimized configuration to 500 while actually decreasing monitoring lag and keeping it well under SLA requirements. I added support for priority discovery or re-discovery of network devices after network engineers perform a change in the network. For increased availability, the monitoring system runs in Active/Active mode—i.e., every network device is being actively monitored by two hosts (with alarm deduplication). The discovery manager also runs in Active/Active mode without locking and with minimal state. It's integrated with Amazon's SNMP credential rotation system and written in Python.

Enabled fully automated provisioning of new customer websites in order to allow the marketing of a free product edition that requires no manual work at all and save work for paid customer installs. Automated bandwidth accounting and quota cutoffs or bandwidth surcharge depending on package. Worked as part of a team and implemented the API calls and back end but not the user interface. It's written in PHP and MySQL.