I Am a DevOps. There are several techniques for accomplishing the task you describe. A lot depends on how many IPs you have available and whether the sending server is *nix (Linux, etc), Windows, or Apple (not likely at this point).
I am submitting a bid based on the likelihood you are running Linux (especially since your listing mentions Linux Skills). If you are not then my bid will need adjustment.
I have been a professional programmer for 35 years. I started the very first ISP in Nevada (USA) in 1994 and have been developing websites ever since. I am an expert in PHP, ASP, Cold Fusion, Java, Javascript (all of the most popular frameworks), HTML & CSS (of course), all server scripting languages, server operations, and all flavors of SQL. I charge top-dollar for a reason.
If experience counts, I'm your guy!