We want to migrate our existing Windows network to a Linux one, and roughly these are the tasks involved:
(I realize it's not very likely someone will know all of these, so we're willing to hire one person for tasks not directly related to Samba/LDAP/Kerb, and another one for those specific needs... but if you fit the fill, by all means, apply).
* Install and configure a PDC with Samba and possibly LDAP/Kerberos (based on your suggestion).
* Configure common network infrastructure: DNS, DHCP.
* Configure Webmin on each server.
* Configure an IPCop firewall with four NICs.
* Configure network monitoring.
* Configure Windows-compatible file server.
* Configure servers to authenticate via the PDC.
* Configure local package repository with pre-approved upgrade packages for auto-installation (is this possible?).
What *won't* be needed:
* Messaging server (email, IM, etc.)
The servers will be distributed as VMware virtual machines across two physical servers (which shouldn't make a difference since you'd be accessing to the VMs via SSH). Hosts and VMs use Ubuntu 7.04. The network will be segmented in 4 blocks: LAN, DMZ, Wireless, Internet.
There are lots more work to do, but I hope this gives you an idea of the expertise required.