Jonathan C. Allen (jscallen@gmail.com)I am currently a part-time Engineering Consultant for Global Coral Reef Alliance and Bikes Not Bombs, both key to the sustainability of Earth. The first, for restoring ocean biodiversity and sequestering CO2, the second, for getting people to where they need to go environmentally,Previously, the chief electrical engineer for astrophysics research at MIT/LIGO (the world's most sensitive gravitometer) as well as a commercial product design engineer for consumer and industrial markets (5 US Patents). I boosted the LIGO signal-to-noise ratio by 15dB, revealing 2 black hole in-spirals in 2015, a 3rd in 2016, and additional events each year. These were acknowledged as being the first proofs of Einstein's theorized gravity waves and made possible by my enhancements to the LIGO installations.My electronic designs have been focused on low noise instrumentation, audio, power and controls from DC(0) through 3GHz for wired, fiber optic to wireless applications. The systems designed ranged from $50 retail audio products (dBx) to multi-million dollar observatories (LIGO). Designs contributed to included the most stable magnetometer (ADE X-9), the most robust phone system (DYMEC NEMP hardened Red Phone), the most stable actively damped aircraft tail (ACX / F-18/ V-tail) and the most dynamic digital audio recorder (dBx Model 700).My education is a continual process, with both courses and seminars keeping me up to date and expanding my horizons. My most recent courses include the Bose Institute graduate-level class (MIT#6.312), Acoustics of Rooms and Enclosures. I also consult, mentor, tutor, audit seminars, do sound reinforcement & recording, and volunteer for worthy causes.My specialties: Instrumentation, Noise Remediation, Audio, Video, Graphics, Linear, power, and mixed-signal circuit design, with a strong focus on DFx techniques for mfg., test, EMC, safety and international compliance. Mechanical engineering- mostly bicycle maintenance and repair with some automotive.Possible Alternate Spellings:Jon, John, Johnathan, Johnathon, Jonothan, Jonathon, Jonothon, Allan, Alan, Alen, Alain, Allain, Allyn, Alyn