Greg Kluthe is a Software Engineer with experience dating from the late 1970s (and a degree in Computer Engineering - Electrical Engineering with Computer Science on top in the mid 1980s).
He is from the United States and lives in Southern California.
He has worked in both Defense and Commercial Software Development working on Production Systems (not just research projects). Applications ranged from Radar and vehicle control systems, to Enterprise Resource Planning Systems (ERP), to Medical Devices, to Web Infrastructure tools, to Development Support (now called DevOps), to Video Surveillance.
Here's a short list of Operating Systems and Computer Languages I have significant experience with (although some may be a few years ago):
Multics CP/M UNIX DEC VMS Windows Linux
Various assembly languages (6502, 8051, 8080, Z80, 68K, DEC Macro, 8086/286 etc.) Ada, C, C#, FORTRAN, BASIC, Java, HTML, HTTP, Node/Javascript, CSS. Various Databases both SQL and NoSQL.
Software Tools: VBA (used for office automation), lex on UNIX yacc (yet another compiler compiler) on UNIX (a predecessor to Linux Bison)
He's used a binary logic analyzer (traps 1's and 0's off the bus and displays them on a connected oscilloscope), and programmed in hand translated hexadecimal (burned into EPROM and inserted into the motherboard).
He also plays music and runs sound.