Develop completed mail systems with Postfix, Dovecot, and Roundcube. Setting and configuring DNS records related to mail system MX, SPF, DKIM, and DMARC

Had successfully integrated Linux, Windows, and FreeBSD systems within an existing IT environment to improve interoperability.

Had led the development and implementation of a complex wireless network solution for a company using Aruba wireless AP solution + CPPM + Airwave