[ampdepolymerase]

Work/volunteer as a minimum wage software developer lab rat (or whatever your day job speciality is). There are plenty of labs that are in need of free labor when it comes to software/engineering support in general, just ask around.

[MajimasEyepatch]

If you're an experienced software developer, you can also just get a job as a software developer at any number of companies in pharma and biotech. No need to do it for free.