database/cache services: Elasticache Redis and Memcached, RDS, DynamoDB
EC2 and associated tools: Elastic Load Balancers, Autoscaling Groups, AMIs
VPC, subnets, routing, and security groups
others: CDK, S3, CloudFormation, CloudWatch and 3rd party CloudWatch graphing tools, IAM,
CloudTrail, API integrations with many services for CI server and chat hooks
other cloud providers: Heroku, Engine Yard
Dev Ops
configuration as code - chef/puppet/ansible
environment/app provisioning via terraform and CDK
primary on-call support
deployment and maintenance tooling, developer experience oriented tooling
CI stuff like Github Actions, CircleCI, Teamcity, and Jenkins
familiar with SaaS tools and integrations - New Relic, Datadog, Sentry, Rollbar, etc.