Senior Systems Engineer - Morgan Stanley
(2023-07)
- Provide support for virtualization technologies such as VMware and KVM, as well as for containerization tools like Docker and Kubernetes.
- Using VMware, Cisco UCS, and Ansible, set up new Linux environments for a number of new tasks.
- Implementation of CIS benchmarks, SELinux, Firewalld, and SSH fortification for Linux security hardening.
- Developed a proactive patch management strategy that improved system security and compliance, ensuring adherence to industry standards.
- Install and manage the Red Hat Linux Server operating system together with a number of Linux services and applications, including Postfix, Bash, Python, Perl, Apache, TomCat, Kerberos, LDAP, Puppet, Satellite Server, and Bind.
- Automate routine tasks and processes through scripting and automation tools to streamline operations and reduce manual intervention.
- Migrate legacy Red Hat Linux versions to Red Hat 9
- Support a wide range of data analysis, systems engineering, and business intelligence tools in their daily use.
- Produce reports and documents in support of system requirements and security certifications.
- Proficient at using the AWS CLI to quickly perform tasks and gather data regarding AWS services (EC2, S3, EBS, etc.).
Senior Systems Engineer - MEMX
(2023-03 - 2023-06)
- Contribute to system architecture planning, and policies and procedures
- Conduct impact analysis
- Build run books for orchestration tools used by the firm
Lead Systems Engineer - FactSet Research Systems
(2017-05 - 2023-03)
- Experienced in automating, configuring and deploying EC2 instances on AWS with Terraform.
- Created Packer templates to customize Amazon Machine Images (AMI) and bake immutable configurations to disk.
- Managed several EKS clusters running 100s of containers, 50+ Helm charts, Argo Workflows, ingress-nginx and multiple namespaces.
- Setup a Jenkins master with multiple slaves as a CI tool to support continues development and deployment processes.
- Developed and maintained automated CI/CD pipelines for code deployment using Jenkins.
- Conducted a security audit of a large distributed Linux environment (2400+ hosts) using the CIS Configuration Assessment Tool (CIS-CAT).
- Implemented security hardening of Linux servers using the Center for Internet Security CIS benchmark as a guide.
- Administered IBM Spectrum Scale (GPFS) for clustered file-systems.
- Skilled at using debug tools such as tcpdump (wireshark .pcap), systemtap, collectl and kexec-tools.
- Used CFEngine and Puppet for configuration management.
- Created Ansible playbooks to automate build and deployment processes on servers.
- Created RPM packages to package application software.
Systems Engineer - Rocket Fuel
(2015-09 - 2017-05)
- Linux administration: configure modules, kernel updates, network bonding, IPtables, PAM, and kickstart.
- Used Ansible and Puppet for application provisioning and general maintenance.
- Installed developer tools, including Eclipse, Aptana Studio, SDK repos, libraries and XNVC.
- Perform CPU, memory, network, kernel and disk I/O tuning on Linux servers.
Linux Engineer - Emigrant Bank
(2014-08 - 2015-09)
- Administration of WebSphere Application Server, including: configuring nodes, clusters, applications, plug-ins and virtual hosts.
- Perform application deployments using EAR/WAR files as requested by Emigrant Bank application teams.
- Install, configure and maintain web services, including MySQL, Apache with PHP and SSL extensions, WordPress and Precurio Intranet.
Senior UNIX/Linux Engineer - UBS
(1998-04 - 2014-08)
- Assist in critical outage situations to isolate the root cause, put a temporary fix in place, and recommend long-term fixes.
- Perform CPU, memory, network, kernel and disk I/O tuning on UNIX servers.
- Provide recommendations for server, storage and network capacity planning to management.
- Linux administration: configure modules, kernel updates, network bonding, IPtables, PAM, and kickstart.
- Solaris 10 administration: ZFS pools/vols, container setup, converting rc scripts to SMF services and using Dtrace for troubleshooting.
- Configure Sun DiskSuite, LVM, Veritas Storage Foundation and ZFS for volume management.
- Setup and configure Veritas Cluster Server (VCS 1.3 - 5.x) for application failover.
- Installation and configuration of Sun LDoms on T5xx hardware to consolidate EOL servers.
- Installation and configuration of Solaris containers (zones) for P2V consolidations.
- Migrated UNIX Infra servers (NIS, DNS, NTP, Sendmail, Jumpstart) to Solaris x86 VMware virtual machines (VMs).
- Install and administer VMware ESXi 5.x servers on HP BL460c G8 blades and HP rack-mount servers.
- Setup and configure NFS and SAN datastores in vCenter.
- Administered EMC SAN environment, including: updating zones with Fibre Zone commands, setup LUN access with Volume Logix and mapping LUNs to front-end adapters (FA) using SYMCLI.
- Create templates from VM's for rapid deployment and standardization.
Senior UNIX Administrator - NYFIX, Inc.
- UNIX systems administrator for a large Solaris/SAN environment which routes 40% of all trades to the New York Stock Exchange.
- Participated in the design, enhancement and installation of UNIX systems, including: Sun servers, StorEdge arrays, Clariion arrays and SAN hubs/switches.
- Oracle 8i database administration, including: installing Oracle 8i, managing user accounts, backups, restores, startups, shutdowns and creating table spaces.
UNIX/LAN Administrator - Priceline
- UNIX SA supporting Sun Servers.
- Administered DNS, SMTP, POP, NNTP, FTP and HTTP services.
- Performed UNIX SA tasks, including: adding user accounts, mail accounts, backups, restores and server maintenance.
UNIX Systems Administrator - MIMCO
- UNIX SA for a network of 75 Sun servers.
- Recommended to management procedures and practices to reduce costs and improve productivity, I coordinated the trade-in of older Sun hardware for credit on new server purchases.
UNIX Systems Administrator - Morgan Stanley & Co.
- Supported Commodities and FX traders from the trading floor, I was responsible for the daily support of 172 workstations and 12 servers.
- Performed UNIX SA tasks, including: adding user accounts, mail accounts, backups, restores and server maintenance.
UNIX Systems Administrator - Goldman Sachs & Co.
- Performed UNIX SA tasks for an environment of 150+ Sun servers, including: NIS, NFS, DNS and AMD configurations.
- Supported 3rd party software, worked with market-data vendors, fixed hardware problems and answered help desk calls from traders and developers.
