Steven Jeffers Email and Phone Number

Member of ECS OS team who maintains a custom OS image, cluster management framework, appliance network topology and custom hardware configs.• Tech lead for project which obtained IPv6 USGv6 certification for the ECS product. This involved setting up an in house test environment, addressing issues with IPv6 protocol stack and preparing equipment for certification.• Enhanced ECS product including Suse OS Kiwi installer and python based cluster management framework to satisfy new requirements.• Diagnosed OS, infrastructure, networking and hardware problems reported by different teams, documented and reproduced issues and worked with external vendors when required.

• Refactored and updated python tool for node re-initialization used by customer support team• Created signatures written in Scala and running on Apache Spark used for automated problem diagnosis from customer logs• Handled field incident escalations

Served as member of cross-functional team, qualified and tested hardware, created and maintained health check scripts, tested firmware update scripts, and managed lab infrastructure. Held team responsibilities covering 2 products: EMC’s Data Computing Appliance for running Pivotal Big Data Greenplumb Database and EMC VXRack Neutrino, turnkey Hyperconverged Cloud Compute system with Openstack.• Created and maintained bash/python health check scripts which shipped with VXRack Neutrino. Added checks that verified BIOS, memory layout and RAID controller settings match shipping specs for different Intel and Dell models. Created script that queried switches via SNMP and checked status of ports and redundant uplinks.• Member of agile team responsible for maintaining python based cluster management and operations framework with REST API enabling node health reporting, node management and node deployment. • Diagnosed issues in switch configuration release candidates related to switch firewall ACLs, switch redundancy and resiliency.• Designed rack internal NTP feature with NTP configuration on Cisco Nexus switches. Allowed backup time source when NTP server was unreachable so node times stayed synchronized.• Handled sustaining engineering escalations for DCA hardware and driver related issues. Required interaction with multiple vendors and groups within EMC.• Improved quality of release by testing and diagnosing firmware and driver issues for VXRack Neutrino release candidates.• Built and maintained critical lab DNS, NTP, storage, and VMWare infrastructure used by product Development and Quality Engineering (QE), ensuring reliable and up to date information.• Administered lab PXE infrastructure for loading release candidate builds. Ensured continuing operation by redesigning PXE configuration to work with product network topology changes.• Created scripts to gather lab inventory across lab of VXRacks with many nodes and report results in CSV spreadsheet format.

Provided customer support for EMC Celerra / VNX Network Attached Storage.• Expedited development of patch releases by diagnosing features not working as designed in customer environments, creating reports for engineering, and reproducing environment in lab. Problem reproductions sometimes required creation of shell scripts, programs written in C++ and Wireshark and tcpdump trace analysis.• Minimized customer downtime by creating DUDL initiative that became basis of new server cifs setspn feature. Feature detected and fixed missing Kerberos principals in environments with disjoint DNS and Kerberos realms and or DNS aliases.• Managed Internal Code Patch Repository Server used by Global Support and Field Personnel. Improved product serviceability by replacing SSH/SCP patch access with new website with additional service request tracking. Website used active directory logins. Created scripts to manage website content.• Served as Windows subject matter expert – Troubleshot problems related to how Windows users and systems access Network Storage, using Active Directory, LDAP, Kerberos, and Antivirus.• Coached File Protocol Skill Group – Provided service request consultations for support engineers for global support centers. Audited cases for technical action plan.• Developed and delivered training to Centers of Excellence in Bangalore, India and Draper, Utah. Developed training for implementing SecNFS and NFSv4, Multiprotocol CIFS/NFS and Antivirus for NAS.• Developing tools and scripts for various tasks. One set of scripts migrated user account information between UNIX passwd group files and LDAP databases with 2 different types of schema.