John Wever | Elance
 
176985602337900
Last Sign-in: Mar 3, 2015

John Wever

Senior Linux Systems Engineer & AWS/EC2 Expert
   United States
  |   Ridgecrest, CA
  |  8:02 am Local Time

Resume/C.V.

- Linux Systems Engineer with 10 years of experience working for large telecommunication companies, nationwide Internet service providers, and consulting with small businesses.
- Strong troubleshooting skills and business acumen.
- Extensive experience in designing scalable and highly available services.
- Proven track record of delivering creative and cost-effective solutions.
Service Description
I provide remote, high-quality Linux systems administration services. I have extensive experience with Amazon's EC2 platform and have helped dozens of clients migrate their web sites and applications into the cloud. Available for on-demand support as well as on-going maintenance and monitoring contracts.
Education
Mississippi State University
bachelor of science, Computer Science
- 2003
Employment
White Shirt Networks
Independent Contractor - Linux Engineer
2009 - Present
* Design and implement custom solutions for small/medium businesses to solve specific needs including email/web hosting, spam filtering, networking, and disaster recovery. * Built linux web hosting platform around WordPress. * Transparently migrated dedicated web/email hosting servers onto Amazon's EC2 cloud resulting in lower operating costs, zero hardware expenses, better scalability, and more redundancy.
Swifcore Technologies
Independent Contractor - Linux Engineer
2010 - 2013
* Work remotely handling escalated issues through ticket-based system based on priority. * Administration of VOIP platforms including Asterisk, FreePBX, and FreeSwitch. * Management of virtual machine clusters using both Citrix XenServer 5 and VMware ESX 3.5. * Responsible for resizing LVM based filesystems for virtual machines in DRBD cluster on demand. * Administration of SonicWall firewall including configuring user access, NAT, and firewall rules.
API Digital Communications
Senior Systems Engineer
2009 - 2011
* Administration of 250+ physical servers across multiple locations using SSH or remote access through VPN and utilizing local hands-on support when necessary. * Participated in weekly on-call rotation with 10 minute response time. * Helped design, build, and migrate to private email services cloud based on Xen 4.0 hypervisor and IPVS load balancing hosted on dedicated Dell PowerEdge servers and redundant PowerVault iSCSI storage. * Successfully migrated server platforms from FreeBSD 4.x/6.x to CentOS 5 * Converged multiple company acquisitions into single platform by writing custom import scripts for customer data including billing, web/email files, and user preferences. * Upgraded from FreeRadius 1.x to 2.x migrating from user files to MySQL backend along with central storage of accounting data. * Management of Marshal 8e6 web filter. Integrated transparent filtering of Squid proxy users and enterprise-level filtering through port mirroring. * Responsible for planning, racking, and cabling equipment in data center and customer premises.
Integrity Online
Senior Systems Engineer
2003 - 2009
* 24x7 monitoring and on-call maintenance of national ISP data center using Nagios monitoring and alert notification system. * Implemented VMware Server 2.0 in load balanced HA cluster resulting in a 50% reduction in data center hardware. * Used SpamAssassin and Squid proxies to develop effective web and spam filtering solutions that were the core of our business model. * Created ad campaign generating over $60K in annual revenue by integrating Google AdSense and 3rd party affiliate programs. * eCommerce service deployment and integration with Platypus billing software running on Windows 2000/2003 server and utilizing Microsoft SQL Server 2000/2005. Wrote custom provisioning mechanisms in perl to interface with OpenLDAP and mySQL servers. * Maintained PCI compliance by performing annual security audits and quarterly network scans using the McAfee Vulnerability Assessment service. Responsible for patching systems during maintenance windows to close any vulnerabilities found.
Payment Terms
None specified
John Wever | Elance

John Wever