I would like to have my linode server software updated with the latest stable versions of all the components. I'm looking for a trustworthy, competent individual who can provide referrals. If interested, please email me your price for updating the following software as well as your hourly rate for occasional support. If you feel I should change the OS from Ubuntu to something else then that's fine.

The current system is working fine but obviously showing it's age:
OS: Ubuntu 8.04 LTS
Frontend Web Server nginx 0.5.33-1
Backend Web Server: Apache 2.2.8
PHP Version(mod_php, cli): 5.2.3-2
MySQL Version: 5.0.51a

Would like to add SqlLite.

Are you running anything particularly complex that might break from a major version upgrade?

Before paying somebody to do this, you should try it yourself:

1) Make a snapshot of your linode, either via the backup service, or by cloning it to a new linode (linodes are pro-rated by the day, so getting a second linode for a few hours is very cheap)

2) Try following the instructions for Ubuntu to upgrade between major LTS revisions (8.04 -> 10.04 -> 12.04)

3) Validate if everything is working. If so, you don't need to hire anybody. If not, restore from your backup and then you might need to hire somebody to figure out what's going wrong.

The upgrade process is literally a "copy and paste this into your console and hit enter" kind of thing, so it's worth at least trying the basic process yourself first.