An established 30 year old yet growing $150M+ technology company, with 200 employees in multiple states, based in Houston, is seeking a senior-level messaging engineer in Houston, TX. This is a tier 3 level resource with specialized knowledge and experience in Microsoft Exchange, Office 365, and the Windows server operating systems. This position will work closely with our team of senior engineers and infrastructure group to maintain, update, and introduce new functionality to the existing Microsoft Exchange / Office 365 environment. This person will also assist in supporting the Windows server environment. Other server / storage infrastructure projects will be assigned as needed.