Ricardo Ralston Jr.

ad3nwo@r.postjobfree.com 646-***-**** Orange County, California

* ****

SUMMARY & SKILLS

Systems Engineer

Experienced IT professional with acƟve DOD Level 6 Public Trust Clearance, exceeding over twelve years of experƟse in designing, deploying, administraƟon, maintaining, and supporƟng enterprise Cisco UCS, VMware, MicrosoŌ Server, and Enterprise Linux with an emphasis on virtualizaƟon and public cloud. Highly moƟvated and adaptable to changing business needs, aƩenƟon to detail, excepƟonal analyƟcal and technical skills, as well as a team player. Fluent in Portuguese (Brazilian) and Spanish. Operating Systems Windows Server/12/16/19/22 Red Hat Linux 5/6/7,8 ESX, ESXi, SUSE, Windows7/8/10/11

Hypervisors vSphere 5.5/6.0/6.7/7.0 VMware ESX and ESXi vCenter server 5/6/6.7/7.0 Horizon View, vCenter Converter, VMware Update Manager, Citrix ZenServer, Microsoft Hyper V

Monitoring Tools vCOPS, ESXTOP, Wireshark, SolarWinds, Cisco Network Assistant, Veeam ONE, Splunk, Nmap, Netstat, IPAM, MS Network Monitoring, NSX T

Storage / Database EMC CX700, VNX, 3PAR, NetApp, LTO Tapes, Open Filer, iSCSI Target, MariaDB, MySQL, SQL 2016

Programming/ Scripts Bash shell, Python, HTML5, JavaScript, PowerShell, .NET, C# Converged Cisco UCS, Dell PowerEdge, HPE ProLiant, HP C7000 BladeSystem Microsoft Server AD, DNS, Exchange, SCCM, Intune, SQL, WSUS, Microsoft 365 Hypervisor/

IaaS

VMware vSphere, Hyper V, Citrix Xen Server, Oracle Virtual Box, Azure, AWS

Server tools PDQ, ManageEngine, Okta, Nessus, ServiceNow, F5 BIG IP, Veeam, Barracuda Networks, CrowdStrike

Network Ports/Protocols

DNS, HTTP, SMTP, SNMP, VPN, NETBIOS, FTP, Telnet, TCPIP, SSH, RDP, LDA, SCEP, MPLS, IPSec, UDP, NTP, PPP, FCoE, FC, NAS, iSCSI Infrastructure as Code tools

(IaC)

Terraform, Ansible, puppet

EDUCATION

• Elective in Information Technology from Webster University in The Netherlands

• International Business from American College Dublin, Ireland

• VMWARE VCA6 DCV Certified

• AZ 900 – Certified

• Security + In Progress

PROFESSIONALEXPERIENCE

Infrastructure Oversite

Seneca Global Services Remote Jul 2023 – Jan 2014

• Perform strategic IT planning, system guidance and IT administraƟon PowerPoints presentaƟon. Ricardo Ralston Jr.

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• Guiding Health InformaƟcs team with technical system implementaƟon and conƟngency planning.

• Demonstrate effecƟve communicaƟon skills by regularly presenƟng PWS project deliverables.

• Collect team requests for Federal ATO approvals by providing this informaƟon to the client.

• Worked with a team to collect archive EHR infrastructure documentaƟon to improve bandwidth connecƟon documentaƟon for urban and tribal healthcare clinics.

• Research healthcare KPI logisƟcs for system and user change behavior.

• Became a technical adviser for Data MigraƟon/ Data Quality presentaƟon and documentaƟon.

• Collaborate with team lead to develop beƩer IT pracƟces to improve tribal bandwidth latency

• Work and gain knowledge building E.H.R. Interface Control DocumentaƟon (ICDs)using archives

• Document Oracle Cerner Rest and Soap API and build a plan sheet for implementaƟon.

• Gain knowledge of Healthcare E.H.R systems and third party interface including HL7, HTTP format.

• Document health industry standards protocols, TCP, HTTPS, XML, HL7v2 and v3, FHIR, DICOM, CCDA.

• IdenƟfy opportuniƟes for process improvements and opƟmizaƟon within the infrastructure.

• Ensure compliance with relevant federal regulaƟons and standards in documentaƟon.

• Securing integration methodologies such as REST and SOAP API’s into deliverable presentation,

• Application, Agile, and solution development code enforcer. WINTEL Systems Engineer

SAIC /County of Orange [Contract] Santa Ana, CA Jun 2022 Mar 2023

• Work on a 6 months project as John Wayne Airport SME for County network integraƟon project.

• Work in OCIT datacenter projects for Server Build, Server Refresh, and Server Decommission.

• Become helpdesk ServiceNow escalaƟon point and resolve cases within SLA.

• Manage Exchange Online using PowerShell scripƟng to add hundreds of users to distribuƟon groups.

• Support B2B in O365 guests invites to collaborate with the organizaƟon.

• Support the health of Windows servers and Linux server’s operaƟng systems.

• Hardware/ soŌware and OS desktop support.

• Work under system, database and network cyber security guidelines.

• Create Splunk retenƟon polices to manage data storage, and become Splunk SME.

• Customize service design package (SDP ITIL sheet) and hand off server refresh sheet to server owner.

• Become ServiceNow Ɵcket escalaƟon point for O365 products, Exchange Online, SFTP and PowerBI.

• Handle SolarWinds automated CPU and Memory resource alerts in ServiceNow and perform scheduled maintenance.

• Design Group Policy (GPO) and setup DFS ReplicaƟon.

• Perform root cause analysis on servers and workstaƟons.

• Provide firewall team server netstat filtered logs for server refresh projects.

• Work aŌerhours as needed for on call rotaƟon or scheduled maintenance.

• Work as VMware SME for vlan, vnic, data store, vmoƟon, snapshots and more.

• Configure IIS servers to meet custom requirements and update SSL certs. Core Service Engineer

Techlink Systems/ NFP [CONTRCT] Aliso Viejo, CA Apr 2021 – Jun 2022

Support AcƟve Directory Domain controller sync issues, and reassigning FSMO roles.

Manage Azure desktop applicaƟons, Azure backup, and Azure AD in a federated state.

Support users recover lost files by connecƟng in to a windows file server.

Resolve Solarwind alert cases by troubleshooƟng or schedule aŌerhours maintenance.

Troubleshoot server issues in the realm of Windows IIS server, SSL certs, AD, DNS, GPO. Ricardo Ralston Jr.

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Work on incidents supporƟng document version control and Excel databases troubleshooƟng.

Support VMware vCenter resource groups, server vnic, vlan, datastore, vCPU and more.

Deploy SCCM endpoint protecƟon, applicaƟon updates, and SCCM pixie boot OS using DHCP scope.

Provide user workstaƟon support and user applicaƟon support.

Administrate server cerƟficate authoriƟes (CA’s)and Secure Email gateways (SEGs).

Troubleshoot system and end user computers cyber security applicaƟons and guide user processes.

Configure as well as setup MFA, device app permissions, soŌware patching, encrypƟng or wiping devices as well as device monitoring and enrolling devices all via MS Intune.

Handle Splunk apps and add ons and configure Splunks funcƟonality for

Perform patching by using WSUS and support server decommission.

Troubleshoot windows server disk space by scanning vCenter LUN and extend D:, E: or C: drive disk.

Support escalated cases for user Azure resource groups, virtual network and VDI issues.

Help agency’s printer incident cases and resolve printer server’s funcƟonality.

Become Cisco UCS C Series expert and perform UCS firmware upgrades.

Support Azure resource groups, storage accounts, Azure SQL database and Virtual Machines. Systems Engineer

Data Resolution (MSP) Laguna Hills, CA Dec 2017 – Apr 2021

• Develop cost effective network/system connectivity for local manufacturing businesses.

• Leadership and support a team of 3 field engineers.

• Monitor infrastructure development and progress goals.

• Build and manager Citrix hypervisors and manage Citrix Virtual Apps and Desktops.

• Configure and Implement MS SQL and configuraƟon server’s ODBC.

• Support AWS and Azure IaaS cloud resource groups by uƟlizing Terraform.

• Perform Windows and Linux OS patching and applicaƟon support using Ansible.

• Deploy VMware VM’s and perform Windows iniƟal configuraƟon by seƫng up features and roles.

• SupporƟng users’ desktop operaƟng systems, hardware and soŌware.

• UƟlize MicrosoŌ Intune for configuring and seƫng up MulƟ Factor AuthenƟcaƟon (MFA), managing device applicaƟons, seƫng up AnƟvirus Polices with endpoint security policies and monitoring

• Build a Linux SMB files server from scratch and schedule veeam incremental and differenƟal backup.

• Support clients request to build and integrate preexisƟng IT infrastructure to Azure public cloud to a federated state then to Azure managed state; including SCCM managed devices to Intune.

• Vulnerability scanning using Nessus and patching to maximize environment security. .

• Server Build, Server Refresh and Server Decommission Projects and oversee implementation projects.

• Rack and stack bare metal servers supporting iDRAC and firmware upgrades.

• Become user escalation point contact for Desktop, Laptop, and system issues as team lead.

• Support manufacturing businesses to have a centralized infrastructure environment.

• Recommend VMware/Azure hybrid integration and build / support growing manufacturing business.

• Become VMware Horizon View SME for VDI/ Remote Desktop environment.

• Cisco UCS server refresh project for Manufacturing database company project. Linux Date I/O Archive Specialist [Robert Half/ Temp Contract] Sony Pictures Studio Culver City, CA July 2017 Dec 2017 Ricardo Ralston Jr.

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• Running CentOS 6 and uƟlizing LTO 5/6 tapes backup to ensure reliable data backup and restoraƟon.

• Daily facilitated retrieval of archived data, effecƟvely reducing the risk of data loss or corrupƟon.

• Created detailed documented procedural manuals outlining step by step I/O data LTO tape transfer.

• Perform LTO work order and Ɵcket requests within specified Ɵmeframes, keeping high level of quality and accuracy.

Linux Administrator [NOVA CONSULTING GROUP]

AT&T Bridgton, MO Jan 2014 – May 2017

Assigned to the WebRTC Project.

Part of ORT (Operation Readiness Testing) worked on Production and Development Linux servers.

Configure newly built RHEL servers, perform root login scripts, add hosts, users, an

Perform iniƟal server configuraƟon before handing off to Java and DevOps team.

Administrate Linux key exchange and trust models for Server and Email encrypƟon using PKI.

Troubleshoot Dell and HP servers and server environments, swap or replace serve. Data Center Engineer

Digital Terrain MSP [FULL TIME] Livonia, MI Jan 2012 – Jan 2014

Datacenter Administrator infrastructure build and supporting NetApp ONTAP Storage cluster.

Linux Network configuration and Storage Volume management, Apache server and Patching

Cisco UCS Server builds and troubleshoot support, Fabric Interconnects management.

HPC7000 Server builds and troubleshoot support blades systems.

Rack and stack Dell and HP rack servers support DIMM, CPU, and Motherboard and PCIe cards.

Review and update VPN, whitelist/blacklisting’s and update firewall rules on Cisco firewall.

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