Many people (self included) leave the private sector for this duration to support the mission of 18F. After the term is over many people will return to the private sector.
I'm OK with a pay cut to work on meaningful projects that benefit the American public. I'm not worried about returning to the private sector if/when I choose to do so.
Speaking personally, I think there's a lot of room for policy folks to dig into how gov't can better hire and retain skilled talent, but that's not 18F's function.
(It's probably better that they don't: http://www.joelonsoftware.com/items/2005/01/27.html)
When I applied, they had a table of salaries, adjusted for location, so at least they were transparent about it.
I'd love to get involved, I'm mainly focused in software engineering. It seems like a great cause to partake in.
In the shorter term, do check out https://micropurchase.18f.gov. It's where we post very short term contract opportunities ($3,500 or less, and tasks typically take up to a week). I also happen to be a dev on this project, so feel free to reach out here or at [email protected] if you have any questions.
I'll let @bmogilefsky describe the jobs. @18F as a whole hires engineers, designers, product managers, content writers, journalists, folks with non-traditional cross-functional backgrounds, etc.
Salary depends on job grade. See [1] for an explanation of the grades within 18F. Then see the GS pay scale [2] to figure out the pay for your grade in your region.
[1]: https://pages.18f.gov/joining-18f/pay-grades/
[2]: https://www.opm.gov/policy-data-oversight/pay-leave/salaries...