Julian Ospina

Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- AREAS OF EXPERTISE:  Linux: Centos, RHEL, Debian, Amazon  Iptables  Windows Server 2008 - 2019  Network Administration  AWS, RDS, Cloudfront, ELB, SNS  Samba, SSHFS, VSFTP  SSH, SCP  WAN Infrastructure and Technologies  Bash, Python, PHP  Web interface development and Troubleshooting, Wordpress, Drupal  Zabbix, OSSEC, Sendmail,  Apache, MySQL, Squid, Postfix Software 10 + years experience with industry standard server software in production environments: Apache, Sendmail, Qmail, Exim, Bind, MySQL, MariaDB, Samba, SSH, VSFTP, SCP. 4+ years of experience installing configuring and managing OpenSIPS / Kamailio 4+ years experience with Telecommunications equipment and server software. Including Asterisk, SBCs, Media gatewats, SIP phones and others. Experience with monitoring tools and software: Zabbix, OSSEC Splunk, Syslog, Nagios, Xymon. 5+ Years experience with Active Directory, DNS, IIS, and MSSQL 4+ Years of experience with Exchange server 3+ Years experience Installing and managing Wordpress sites 8+ Years experience with AWS deploying and managing high availability high load e-commerce applications. 3+ Years managing Microsoft Dynamics 365 FO for large company. Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- Operating Systems 8+ years experience with Unix / Linux servers administration. 7+ Years of experience with various Windows Server OS 2019 8+ years experience with DOS, Windows 9x, NT, 2000, XP 7+ years experience with Linux client administration Programing Languages Cloud infrastructure Networks HTML, PHP, PHP CLI, CGI, Perl, Bash 6+ years on Web design and Web development experience. Extensive experience managing AWS infrastructure. 1+ years experience managing Azure infrastructre LAN 7+ Years experience with Local Area Networks Administration WAN Extensive production experience with Internet related systems and Internet infrastructure including: TCP/IP, ATM, and Frame Relay. Wireless WAN IP Point to Point technology. WAN deployment and administration. Cisco IOS and related equipment Satellite Communications Hardware Experience with industry standard service provider hardware: Cisco - AS 5300, Catalyst 6509 Switch, 7513 and 2800 Routers, Pix Firewall, Arronet Wireless. Sun Microsystems - Sun Sparc, Tatung Servers Dell – Rack mountable servers Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- Telecom Experience with Telecommunications equipment software and security. Including Asterisk, OpenSIPS, SBCs and other VOIP gateways and infrastructure running on Centos and Debian. Security Experience with Operating System security analysis and configuration on Linux, and Windows. Configuring and improving Firewall security, encryption software. Including Iptables, SSH, SSL, IPSEC and SSL VPNs. PROFESSIONAL EXPERIENCE November 2013 – 2022 - Fanatics - Miramar, FL Systems Administrator / DBA Administration / Management of e-commerce servers, network and infrastructure Administration / management of company's financial servers and infrastructure Responsible for maintaining and building Ecommerce infrastructure and maintaining Company’s financial application and infrastructure. Extensive work with AWS, Amazon Linux, RDS, Cloudfront, Bash scripting and Linux server applications, Squid, Postfix, Sendmail, VSFTP, Domo, Microsoft Dynamics 365, MSSQL, MySQL, MariaDB, Zabbix, Qualys, Splunk, Crowdstrike among others. Also responsible for PCI compliance and passing regular security audits. Main achievements: Successfully assisted in migration to new e-commerce platform and new financial application and environments and successfully achieved PCI security audits compliance and compliance for other internal audits. Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- December 2008 – 2013 - JS Communications Inc, Fort Lauderdale, FL. Linux Systems Engineer / Network Administrator Responsible for planning, installation , configuration and administration of Linux based Telecom switches / servers. Including Centos / RHEL and Debian. Daily tasks include. Monitoring Linux services using tools like Xymon and Nagios, backups administration, managing remote Linux servers through SSH and SCP. Configuring Apache, MySQL queries, Samba file shares, Iptables and OpenSIPS configuration. Troubleshooting of SIP trunks interconnection and call quality including, Jitter, echo cancellation, one way audio and call answer supervision. Additional tasks include creating and maintaining Bash and PHP scripts to automate monitor, and enhance existing applications. Assist in design and architecture of network including Routers, switches, firewalls and databases . May 2005 - 2008 Reliance Technologies Inc. - Stamford, CT. - Corporate IT Business Solutions IT Manager Responsible for architecture and administration of multiple large companies network and system infrastructures. Developed IT business solutions and provided support for companies ( clients ) including network and systems design, installation, maintenance, training and managing IT providers. Including Windows 2003 and Linux servers (Centos) March 2002 - 2005 MendQuest, LLC - Hollywood, FL. - Corporate IT Solutions IT Manager Administration of multiple small and medium size companies core network and systems. Developed and integrate IT business solutions and provided support for companies ( clients ) including network and systems design, installation, maintenance, training and managing providers June 2000 - 2002 Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- Stacnet.com - Fort Lauderdale, FL. - ISP and Telecom Carrier Technology Consultant / Administrator Design, deployment and administration of ISP’s Network Operations Center. Including:  Configuration and administration on Redhat Linux 64 bit and Solaris 7.  Cisco routers configuration  Cisco switch administration, Vlan configuration  Cisco Pix firewall configuration and administration  Raised floor, equipment and cabinets installation  Gigabit fiber optic Ethernet network design and installation  Raid and tape backup systems administration Some of the tasks included installing Redhat Linux operating systems on Servers, Configure it for production on service provider environment. Cretate and manage Bash scripts to automate systems, Install and configure application to provide hosting service like: Apache virtual hosts, Sendmail, Bind and FTP. Daily monitoring of Linux services including Load, disk space, backups and redundancy including Network routers and firewall as well. Julian Ospina 641 Oleander Drive Mobile: (754) 736 - 0683 Plantation, Florida 33317 Email:- EDUCATION & T R A I N I N G  The Academy – Cisco CCNA Course Completion Certificate  Cisco Voice Applications Partner CVAP Training  Cisco Service Provider Advance Partner Boot camp  Starband VSAT satellite technician certification  Miami Dade Community College - Electronic Technology Certification. Certified to assemble, install, operate, maintain, troubleshoot and repair electronic equipment.  Miami Dade Community College - Computer Repair and Maintenance Certification.