Steven Lu Email & Phone Number

New York, New York, United States

DevOps, SecOps, Network

New York, New York, United States

New York, New York, United States

Greater New York City Area

• Wrote python scripts to generate and deploy configurations for Citrix Netscaler, Juniper vGW and Juniper SRX.• Wrote python script to generate Citrix Netscaler vserver and content switching rule inventories. Created dynamic web page for inventory presentation.• Wrote python script and provided self-service functions for load balancer virtual IP creation. Also forked the script to provide automatic load balancer virtual IP creation.• Designed, implemented, and maintained a log aggregation and visualization solution which collects logs from 100+ applications and 5000+ network, Linux, Windows, storage, and security devices. The solution currently collects and aggregates over 5TB of log data every month. Metadata are assigned to all log entries so that they are indexed and easily searchable. All aggregated logs are visualized, providing users abilities to observe data trending, build metrics dashboards, perform data mining, predict failures, and simplify root cause analysis.• Built and maintained a high performance Graphite based metrics collection solution which collects ~1,000,000 metrics from 5000+ network and Linux devices as well as Java applications. Created crucial metrics dashboards which provide data driven capacity planning, failure prediction, and root cause analysis.• Rationalized the Nagios monitoring system. Increased number of monitored services from 9000 to 50,000. Increased monitoring capacity from 9000 services to over 200,000 services. Reduced average health check latency from 5 minutes to less than 10 seconds.• Wrote scripts to provide host and service auto registration in Nagios. All existing and newly provisioned hosts and their generic services are added to Nagios automatically.• Wrote numerous Nagios health check plugins to support modern monitoring and alerting.• Implemented PagerDuty integration for better event escalation and oncall scheduling.• Designed and implemented Nagios health check self-service functions for developers.

620 8Th Ave, New York, Ny

• Received 1 level of promotion• Configured SAN zoning and multipath on EMC VNX storage devices and ESXi servers• Configured and exported LUNs on EMC VNX storage devices• Configured DNS entries and troubleshot Dynamic DNS issues• Troubleshot server connection issues in Juniper vGW• Built and presented high-redundancy/high-performance Zabbix monitoring and trending solution• Configured distributed monitoring and auto device/server registration in Zabbix• Generated and configured networking device templates in Zabbix using perl scripts• Rebuilt the Nagios monitoring systems to support the rapid growth and performance requirements• Wrote and configured new Nagios plug-ins to support dynamic monitoring requirements• Rebuilt the Cacti monitoring systems with Plug-in Architecture to support aggregated graphing as well as alerting• Configured cross-site data/file replication using VNX Replicator• Performed data backup and restore using Legato• Created and managed virtual machine templates, provisioned server instances, and installed Linux operating systems using VMware vSphere• Managed a large number of system and application configurations using Puppet• Managed RPM packages and applied version control using Spacewalk• Coordinated and deployed critical service releases and patches• Took the systems lead role in the E-Commerce project and successfully improved service availability and performance• Configured load balancing vservers and content switching rules in Citrix Netscalers for production services• Patched and configured Citrix Netscalers• Practiced in the oncall rotation and resolved high priority incidents

• Received 1 level of promotion• Provisioned and kickstarted 150+ physical and 250+ virtual Linux servers• RPM packaging and RPM spec file modification• Configured and tuned NFS filesystems• Implemented and tuned Red Hat GFS clusters• Upgraded RHEL from 5.0/5.1 to 5.3 on production systems• Upgraded firmware on various models of servers and network devices• DNS zone file modification• Cobbler snippets modification• Configured Zabbix system monitor including alert escalation, zabbix_trapper, and zabbix_sender • GRUB boot option and boot device configuration• Configured VLANs, STP, trunking, and routing• Troubleshot LAN/WAN connectivity and SAN zoning issues• Configured Juniper firewall to block/allow various hosts and services (ports)• Implemented network QoS for VPN and phone users using Juniper firewall traffic shaping• Scheduled and performed failover and load balancing using Citrix NetScaler load balancers• Designed and implemented content switching for web services on Citrix NetScaler load balancers• Kernel parameter modification for Oracle tuning• Created and maintained thin-provisioned virtual volumes on 3PAR storage units• Followed team’s documentation and implemented monthly staging data refresh using 3PAR virtual and physical “Consistency Group Copies”• Wrote Shell script to capture and alert on GSLB (global server load balancing) changes• Wrote Shell script to detect and alert on SSL certificate expiration• Wrote Shell script to integrate HP/IBM disk status monitors with Zabbix• Hands-on experience in LDAP administration• Worked on basic MySQL and Apache tuning to improve WordPress web server performance and high load tolerance• Backed up network device configurations using RANCID• Worked with SA team and Verizon to implement MPLS connections between sites

Led a team of 3 accomplish FPGA gaming chip project.Set up project timeline and designed the infrastructure.Created the flow chart and digital circuit diagrams.Implemented and tested the design using Xilinx University Program.