Company overview Egg-Telsa SA is an engineering and contracting firm engaged in electrical & voice/data installations. Involved in Real estate development. Privately held, 350+ employees. Since being founded, Egg-Telsa SA has grown steadily to the position it now occupies in the industry as one of the largest contractor in French speaking Switzerland. On any job, large or small, the people of Egg-Telsa SA pride themselves in quality, on-time completion, and constant customer satisfaction. In addition to our project focus, Egg-Telsa SA has developed an outstanding Service department, which provides ongoing electrical/data maintenance and small project services with over 90 service vans in the lake Geneva region.