Developing in Salesforce for over 5 years, I've worked on many different different types of installations ranging from B2B enterprise sales to B2C healthcare patient portals.
API
BULK API
Drupal Connector
Metadata API
PHP Connector
REST API
SOAP API
Wordpress Connector
Administration
Communities
Forecasting
HIPAA compliance
Marketing Cloud
Opportunity Pipelines
Pardot
Platform Encryption
Process Builder
Visual Flows
Data
Attachment Migrations
Backups
CRM Migrations
Data Loader
Salesforce Shield
Development
APEX Coding
APEX Triggers
Custom BCC e-mail
Custom E-mail to Case
Custom Web to Lead
Custom e-mail services
Future functions
Visualforce Pages
Miscellaneous
Golfing
Reporting
Custom Salesforce Reports
Dashboards
Testing
Callout Testing
Integration Testing
Unit Testing