Big Rex

We promote effective altruism, global priorities research, skills training, career advice, software development, organizational management, job search, and basic life skills designed to benefit those located locally and abroad.

Volunteer With Us

Are you tired of a dead-end job where you aren’t appreciated? Would you like to learn something new that is more rewarding?

We are based in Tempe, Arizona and are developing solutions to help people like you change your lives. Can you set aside one hour per day at home to learn a new skill?

We need help solving lots of small problems. We would love to talk to you to see how we can work with you.


Be remarkable
Be generous
Create art
Make judgement calls
Connect people and ideas
— Seth Godin

How to Contact Us:

Big Rex Facebook Page

President: Robert Haasch
Mobile: 602-663-0335 (Text preferred)
Email: Robert@BigRex.com