[gexla]

No work is interchangeable. Some manufacturing jobs get close, but certainly not programming. I have heard this idea of programming jobs being interchangeable but I haven't seen it in the real world. This must be the work of a snake-oil salesman who was really good at being heard pushing this idea. Outsourcing and jobs sites like to push this idea because it makes them money. They can sell the idea, get the contracts and pay developers, but that doesn't mean any real work gets done.

If you want to know how to sell software (or services), I couldn't even touch the advice which tptacek and patio11 regularly give on HN. Do a search for their threads and run with their advice. As per patio11's profile, you could even email him and there is a 70% chance of him getting back to you.

[patio11]

I should probably update that downwards [0] these days -- I've even been thinking of dynamically calculating it to have an excuse to do a weekend programming project.

[0] Busy with work and kids leaves me with less time for the Internet generally, as you can probably gather by e.g. my HN participation being "a time or two weekly" rather than "multiple times every day for years."