Hello,
I've spent a whole career around the AS400/iSeries, and still do. Currently working at a large healthcare enterprise on the biggest array of iSeries branch machines in my country.
Done any kind of extractions and data uploads from/to AS400. See in my porfolio: DTS development for OLAP cubes out of AS400 databases.
Programmed lots of applications using native languages: RPG all of its versions, COBOL/400, CL, SQL packages etc. Client/server VB apps linking to AS400 tables through ODBC.
I have senior level at AS400 DB design and administration, as well as medium level at System Programming (Device and System control and maintenance, Performance Tuning, etc.)
I'll be glad to apply to your projects when you and your client are ready.
Thank you,
Carlos (a.k.a. Grunty)