I can help you with any single task needed on a linux VPS or dedicated server. I specialize in CentOS and Ubuntu servers, and optimizing performance for Wordpress and Magento sites in addition to general system administration.
Single tasks may include:
Initial server setup accounts, secure SSH, setup firewall, etc...)
Install and configure basic LAMP/LEMP stack
Automation (backups, cron jobs, etc...)
Basic installation of Magento, Wordpress, etc...
Theme or plugin installation
Install SSL certificates
Troubleshoot specific server or site issue
General consulting (advice or recommendations)
More complex or involved issues may require additional purchases, or a custom order may be best.