| Confidential Linux Senior Consultant - Architect and build Linux systems for research environment.
- Remote maintenance and administration.
- Ongoing consultation regarding best practices.
Confidential Global Operations Engineer - Developed and implemented company intranet with AD authentication.
- Implemented and maintained companywide internal messaging via messaging server and system based on jabber protocol, SMTP and video conferencing.
- Global support of Titan servers supporting ENUM/DNS, SIP, DIAMETER, SS7/C7 and SIGTRAN
- Set up and maintained Linux PXE install environment.
- Developed and deployed Terramark infrastructure of Linux systems.
- Automating of day to day tasks backup, monitoring via scripting.
- Linux system and hardening.
- Implement and maintain RPM repository.
- Vendor relations and management.
- Soffront v.8 to v.10 migration.
- Build and support Window's Server 2012.
- Implemented mobile calendaring based on Ical protocols and MUA integrations.
- Window's volume licensing management.
Confidential Linux Senior Consultant - Complete Linux systems life cycle responsibility. architecting, implementation, maintenance and troubleshooting
- System level and operational technical documentation including how-tos for all required projects.
- Main focus on complete LAMP stack Linux, Apache, MySQL and PHP
- Architecting implementation of the AWS/EC2/EBS Amazon infrastructure as well as the Rackspace Cloud.
- Bi-weekly planning, strategy and reaction meetings with management.
- Create SOPs for regular processes.
- Maintain IPTables as well as Amazon Security groups and policies.
- OpenVPN planning and implementation.
- System hardening.
- Building custom RPMs from source to overcome pre-built limitations.
Confidential Linux System Engineer - Team POE point of escalation when line manager is out.
- Support global customers with customized RHEL configurations and troubleshooting through our global queue system.
- Take customer calls assisting them in building out their infrastructure with our product offerings.
- Mentoring junior team members through shadowing and classroom curriculum.
- Collaborated in team development and expansion.
- Manage and administer our team lab presence.
- Created break fix environment for RHEL using VMWare to train team members.
- Ongoing industry research and training on current and forthcoming technologies.
- Rackconnect SME and team rackconnect mentor.
- Hybrid cloud SME and team cloud mentor.
- Review and contribute code fixes to various projects as needed.
Confidential Level 3 Resource/Sr. Sys. Admin - Assist with network design solution for new product portal consisting of multiple protocols coming into a new extranet.
- Install and configure Windows Server 2008 clusters.
- Install VMWare ESX 4.0 and subsequently install and maintain Windows Server 2003 and Red Hat Linux guests.
- Remote system installs and administration using Dell Remote Access Console iDRAC .
Confidential Sr. System Administrator - Administer and maintain New Hope data center consisting of Solaris, Linux, OpenBSD and Windows 2003 Servers.
- Designed, implemented and maintain Subversion revision control system for corporate wide source code. Wrote and implemented user shell allowing users to interact with system without shell access.
- Maintain VMWare server farm running Linux host OS with Linux and Windows Guests.
- Designed, implemented and maintain corporate system monitoring using Nagios. Created script to create all configuration files from a CSV spreadsheet for efficient and easy updating.
- Manage network attached storage for New Hope corporate office using NFS and SMB/CIFS.
- Windows 2003 AD user/computer/group administration and maintenance.
- Save corporate resources by using Amazon's EMC EC2 cloud computing environment.
- Operate systems in a validated environment, consisting of documentation and validation procedures required by FDA for audit trail and accountability.
- Assist corporate network and security groups in diagnosing issues with corporate WAN and Internet connectivity.
- Oversee and maintain all SSL creation for client applications on Apache and IIS web servers.
- Participate in corporate architectural meetings to assess and determine hardware, software and networking needs to meet the requirement of clients.
- Configure and implement all Apache configurations for client projects running on PPD systems.
- Designed, implemented and maintain IPTables configurations to protect systems on the corporate DMZ.
- Integrate OpenBSD systems into our existing infrastructure to reduce licensing costs and improve security over Windows and Linux based systems.
- Designed and implemented interim SMTP relay system workaround when corporate policies inadvertently prohibited New Hope help desk software from sending email.
- Participate and advise in weekly executive meetings to determine ongoing procedures and practices.
- System integration using HP/Compaq and Sun hardware to facilitate new client needs.
Confidential Security Analyst specializing - Customized Symantec SMS Security for SMTP 5.01 resulting in 1/10 load on machines.
- Reduced incoming SMTP load on mail servers from 3 million to approx 200,000 mails a day inspected by system.
- Replaced SMS Security for SMTP 5.01 internal LDAP integration with scripted updated reducing synchronization times from hours to minutes with reduced network load and reduced load on AD servers.
- Replaced SMS Security for SMTP 5.01 internal non-rfc compliant handling of invalid users with industry standard handling with custom errors and reporting.
- Participated in bi-weekly change management communication meetings with interdepartmental peers mitigating unexpected downtimes.
- Prepared expenditure/time estimates for interdepartmental projects.
- Communication with other technical areas through change management
- Assisted firewall team with customizing Checkpoint firewall operations.
- Created and maintained technical and procedural documentation.
- Weekly meetings with Symantec reps discussing product pitfalls and needs resulting in patches deployed by Symantec.
Confidential Owner/Consultant /Senior Network/Systems/Security Administrator - Assist companies in network security audits/assessments and subsequent security solutions
- Develop and maintain varied web enabled solutions for client needs
- Network/Application troubleshooting on site and remote
- 24/7 responsibility for client system monitoring and uptimes
- Design test and implement portable multi-OS Linux, Solaris, BSD solutions including but not limited to MTA, database, VPN solutions.
- Assist companies in developing and implementing Linux/Unix Linux, Solaris, and BSD as a desktop to replace Windows.
- Design solutions to deal with interoperability between heterogeneous operating environments
- Provide customer training in Linux/Unix OSes.
- Create open source solutions to inter-operate with and or replace proprietary hardware/software installations including complete mail systems, VPNs and redundant firewalls
- Work with customers on solutions maintaining focus on budgetary constraints, assessing and molding solutions to fit all their needs
- Responsible for documentation of procedures.
- Created anti-spam email gateway how-to used by industry professionals
- Consult regularly with other industry professionals regarding best practices for theory as well as implementations
Confidential Designed, built, implemented and maintain all Linux systems. - Successfully designed and implemented border security using Netfilter with Road Warrior access using ssl based openvpn and l2tp for remote access.
- Designed, built, implemented and maintain enterprise email system composed of open source tools, featuring Anti-Spam/Anti-Virus filtering, directional SMTP services, imap services and webmail system. Integrated MySQL into the system to allow real time updating of access / greylist and spam policies. Integrated anti-virus/anti-spam into webmail system to allow end users to maintain rules and black/white lists.
- Designed and implemented redundant WAN connections with automatic failover and state retention.
- Implemented 24/7 host and service monitoring solution increasing uptimes and awareness of system and networking issues.
- Migrated customer from Cisco routers to Linux and OpenBSD based routers eliminating yearly support contract and licensing fees.
Confidential - Designed, built and maintain FreeBSD server providing mail services SMTP, IMAP and POP for enterprise with webmail access for remote email access.
- Setup and configured Mac OSX 10.4 to FreeBSD file sharing utilizing NFS.
- Created custom scripts to backup Mac systems to the FreeBSD file server nightly
- Ongoing monitoring of internet accessible systems and services and provide automatic email and sms alerts if service interruption occurs.
- Confidential
- Converted existing Checkpoint POS system running on Solaris to Linux.
- Designed and implemented SSL based VPN system for remote access of desktops and POS.
- Configured Linux print server for Windows clients
- Configured packet filtering firewall using Netfilter to secure internal networks.
Confidential Ongoing support for their line of Linux, IPTables based Firewalls. Designed from the ground up security appliance based on OpenBSD to replace the company's current firewall systems. 4/2009 Confidential Senior Network/System Engineer - Supported over 500 end users in a networked environment using remote management technologies including but not limited to SSH, Telnet, VNC and Terminal Server
- Oversaw and implemented deployment of LAN and WAN networks to remote offices using frame relay, PTP, dial up, PPP, RIP, ISDN and DSL technologies.
- Configured, implemented and troubleshot Cisco routers including 67x, 2500 and 7200 models.
- Designed and implemented firewalls securing our corporate LAN and WAN using Cisco and Linux with tools such as packet filtering, IP masquerading, port forwarding content filtering, proxy servers, access lists and intrusion detection.
- Instructed senior developers on network topology and protocols.
- ISP control center monitoring, maintaining system uptime and network availability using 24/7 monitoring and alerting software in a heterogeneous OS environment.
- Researched and implemented various web mail solutions for secure remote access to corporate email via the WWW.
- Implemented PC to UNIX connectivity via terminal emulation software.
- Designed and built Linux Routers and network servers consisting of web, email, ftp, file, print servers and firewalls replacing Cisco and Microsoft Solutions saving up to 80 on hardware costs and 100 on software cost while creating a more reliable and secure network.
- Consulted with upper management on selection and purchase of server platform hardware and software.
- Managed corporate email using various MTAs such as Sendmail, Postfix and Microsoft Exchange Server, Managed DNS using Bind, DJBDNS secure replacement for bind , and Microsoft DNS Server.
- Monitored violations of corporate security policies pertaining to network and server access using intrusion detection and log analysis tools.
- Interacted with vendor and OEM contacts including but not limited to Cisco, IBM, Qwest, Sprint, Insight and Tech Data.
- Interactions with multiple domain registrars registering and managing multiple domains.
|
Privacy Policy
