Work Experience – Sonny Littlejohn

LSEG/Refinitiv/Thomson Reuters

DevOps/SR Engineer: converted to TCS contract employee 9/20, St. Louis MO 06/2019 to 07/2024

Software deployments and code changes
Managed Real Time data application end to end, including collection and distribution of market data at high volume and low latency
Managed complex stock/bond/securities/options application, which has several formatting and packaging stages, numerous multicast message queues, stock tickers, and databases, as well as thousands of automated jobs
Administered Redhat Linux 6, 7 and 8, and Solaris 10 and 11 systems
Managed AWS Cloud and on prem environments, including their integration
Worked in Agile CI/CD environment with build pipelines
Performed builds with Jenkins and Cloud Formation
Installed several in-house-coded software packages
Wrote technical documentation
Managed operations side of projects
Wrote shell scripts
Edited and maintained shell, Python, and Perl scripts
Took escalations from operations and monitoring team
PowerShell scripting
Administered Windows 2008 R2 to 2022

Unix/Linux Senior Systems Engineer: FNI, St. Louis MO 06/2016 to 04/2018

Administered Redhat Linux 6 and 7 servers running various applications
Administered RHN Satellite 6 server, managing content and hosts
Managed virtual infrastructure in VMware vcenter
Administered small Splunk environment, upgraded indexers and forwarders, created indexes, added/edited apps, performed searches, etc.
Wrote, edited, maintained shell scripts
Created documentation in Confluence
Used Jira ticketing system
Server builds, configuration, and design
Supported EMC storage arrays (vnxe and vplex)
Managed Veeam backup application
built, configured, and maintained local CPAN mirror

Unix/Linux Senior Systems Engineer: iBridge Solutions at Monsanto, St. Louis MO 09/2014 to 06/2016

Administered Redhat Linux servers running various applications
Administered Suse Linux servers running various applications
Server builds, configuration, and design
Provided support to internal customers
Wrote shell scripts
Provided support for systems running Apache, Oracle (including RAC clusters), Tomcat, Websphere and other applications in a large enterprise environment
Mentored junior level engineers and provided them with scripts to automate various tasks
Provided shell script tools to peers
Wrote technical documentation
Administered Windows 2003 to 2012

Two Positions in St. Louis from 01/2007 to 06/2014

Senior Systems/Applications Engineer: Savvis Communications, St. Louis MO 04/2013 to 06/2014

Administered Solaris and Redhat Linux servers
Administered VMware and ESX/ESXi
Worked on, and designed nonstandard, customized solutions for customers
Designed servers such as BIND DNS, SMTP relay, SFTP, and more
Performed various projects such as Veritas major version upgrades, SAN migration in Solaris, Redhat, and VMware environments
Supported LDAP and Redhat Directory Service
Writing technical documentation
Worked on many of the things below, but at a higher level

Unix/Linux Systems Engineer: Savvis Communications, St. Louis MO 01/2007 to 04/2013

Administered Solaris servers running various applications
Administered Redhat Linux servers running various applications
Administered Veritas clusters
Worked with both Veritas Volume Manager and Disk Suite
Wrote shell scripts
Provided support for systems running Apache, Oracle (including RAC clusters), Tomcat, Websphere and other applications in a global hosting environment
Mentored tier2 group and provided them with scripts to automate various tasks
Provided shell script tools to peers, both Unix and Windows administrators
Wrote technical documentation
Provided system support for all customers
Administered blade servers and frames or chassis
Administered VMware, virtual machines and hosts
Supported SNMP and related applications
Support and configuration of Load balancers, F5 Big IP and Cisco Ace