Ask HN: Any volunteering opportunities in YC-backed startups?

Thanks to the H1B policy -- I have to wait another two months before working for a top tech company in the bay area...

Too bored...

Looking for a REAL volunteering opportunity in a tech startup in SF orthe bay area, YC-backed would be the best.

What I could bring you (for free for 2 months):

-- a smart, humble and super fast-learning mind and two quick hands

-- a full-stack engineer most proficient in C/C++ and Python

-- expert level experience with security in web/network and RFID/NFC systems

-- other tech skills such as SQL/NoSQL DBs, RESTful APIs, Javascript/AJAX....

What you could bring me:

-- some fun!

Any tips?