Roy Bartholomew Sonora CA

Director of Engineering for On Guard Security Systems Inc.

About Me

In Modesto, California, Roy Bartholomew (Roy Bartholomew Sonora) is the Director of Engineering at On Guard Security Systems, Inc. Mr. Bartholomew was born and reared in the San Francisco Bay Area, the youngest of seven children born to French-speaking Cajun parents.

Roy Bartholomew is also the owner of By Referral Only Electric. After 35 years in engineering, he has amassed a specialized and in-demand skill set and beneficial relationships with local and national company owners.

Mr. Bartholomew's engineering, design work, and consulting services for Biodomes and other engineered ecosystems are well recognized in the engineering world, in addition to his full-time profession and entrepreneurial endeavours. Mr. Bartholomew currently resides in Northern California with his wife and children.

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Roy Bartholomew Sonora CA - Portfolio

Recent News

December 21, 2023

Exploring Biodomes: A Glimpse into Sustainable Ecosystems

In our quest for sustainable living and environmental conservation, biodomes have emerged as fascinating structures that mimic natural ecosystems within controlled environments. These innovative spaces provide a sanctuary for various plant and animal species, allowing researchers and conservationists to study and preserve biodiversity. In this article, we will delve into the concept of biodomes, exploring […]

Roy Bartholomew
December 11, 2023

Ecosystem Diversity in the Biodôme: A Quest for Perfect Habitats

The Biodôme in Montreal is a remarkable testament to our commitment to understanding and conserving the diverse ecosystems that make up our planet. Within its iconic geodesic structure, the Biodôme houses a captivating array of ecosystems; each painstakingly recreated to provide an immersive and educational experience. In this article, we explore the intriguing question of […]

November 30, 2023

The Emergence of Biodome Projects

In the quest to harmonize human existence with the natural environment, biodome projects have emerged as a beacon of sustainable development. A biodome, essentially a form of a controlled, self-sufficient ecosystem, represents the epitome of blending architectural genius with ecological sensitivity. These projects are not just architectural marvels; they are testaments to human ingenuity in […]

Purpose of a Biodome
November 24, 2023

How to Obtain Your California Electrician License: A Step-by-Step Guide

Becoming a licensed electrician in California is an excellent career choice, offering job stability, competitive salaries, and opportunities for growth. However, to practice legally in the Golden State, you’ll need to obtain a California electrician license. This license demonstrates your competence, ensures safety, and allows you to work on electrical projects. In this article, we’ll […]

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