John Steven R.
ELV & Security Systems Design Engineer | CCTV, Fire Alarm, Access Control, Intrusion Detection, BMS,
Santa Cruz de la Sierra,
Bolivia
Global rank:
234,963
/
131,832
Skill pts: 0
Stats
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Joined: March 13, 2026
Last seen: April 29, 2026
Location
Santa Cruz de la Sierra, Bolivia