# Francisco Renault de castro Junior Francisco Renault de castro Junior is a remote worker on Himalayas, Information Technology Security Specialist at Telefónica Tech / Vivo Telefônica Brasil, based in Brazil. Source: https://himalayas.app/@franciscorenaultdeca ```text Identity security specialist at Telefónica Tech, hardening Active Directory Tier 0 and hybrid identity. ``` | Detail | Value | | --- | --- | | Availability | Looking for a job | | Location | Brazil | | Authorized to work in | Brazil | | Salary expectations | 45k+ USD | | Job categories | IT Infrastructure Identity and Cloud Security Specialist, Identity And Access Management Specialist, Infrastructure Support Specialist, Microsoft Systems Engineer | | Skills | Active Directory, Identity Security, Tier 0 Hardening, Microsoft Entra ID, Hybrid Identity, IAM, Identity Governance, Zero Trust, Microsoft Defender for Identity, Microsoft Sentinel, Kerberos, Windows NTLM, LDAP, SAML, ADFS | | LinkedIn | https://linkedin.com/in/francisco-renault-identity-security | ## About ```text At Telefónica Tech / Vivo Telefônica Brasil, I support MAPFRE’s global enterprise environment across Tier 0 identity infrastructure and multi-domain Active Directory forests integrated with Microsoft Entra ID. I participate in Active Directory security hardening and Microsoft security fortification aligned with Microsoft best practices and Zero Trust. I also contributed to 15 MAPFRE security projects across 15 Latin American countries, including tiered access controls, ACL Xray and Microsoft assessment remediation. At C6 Bank, I contributed to projects resolving complex Azure support incidents and improving reliability through operational automation and monitoring. I also troubleshot Azure IaaS virtual machine issues and supported Active Directory, MFA and virtualized environments. Earlier, I supported enterprise infrastructure and identity work at Synelience Portugal, FDS, a DXC Technology Company, Rumos IT Services and other organizations. My background includes Active Directory, authentication troubleshooting, infrastructure migrations, Microsoft security assessment remediation and backup and recovery. ``` ## Experience ### Information Technology Security Specialist (current) Telefónica Tech / Vivo Telefônica Brasil. Aug 2022 - Present ```text Identity Security and Active Directory Specialist working in Tier 0 and critical infrastructure environments, supporting MAPFRE's global insurance enterprise environment through Telefónica Tech. Operates within highly secured Tier 0 identity infrastructure, protecting core authentication services across a large-scale, multi-domain Active Directory environment with 25+ domains spanning multiple Lat ``` Skills: Active-Directory, Microsoft-Entra-ID, Azure-AD, IAM, ADFS, PKI, MFA, Identity-Governance, Tier-0-Hardening, Zero-Trust, Microsoft-Defender-for-Identity, Microsoft-Sentinel, GPO-Security, Advanced-Auditing, NTLM-Hardening, Kerberos, Windows-NTLM, LDAP, SAML, DNS, DHCP, TCP-IP, Windows-Server, Azure-IaaS, AWS, VMWare, Hyper-V, PowerShell, SCCM, WSUS, Microsoft-365, Level-3-Support, incident-investigation, Migration-Of-Domains, Backup-And-Recovery, Technical-Documentation, IT-Change-Management ### Active Directory and Azure Support Engineer C6 Bank. Feb 2022 - Jun 2022 ```text Contributed to three projects focused on resolving complex Azure support incidents and improving reliability through operational automation and monitoring. Troubleshot Azure IaaS virtual machine connectivity, deployment, backup and migration issues; supported MFA and Hyper-V/VMware environments. ``` Skills: Azure, IaaS, Virtual-Machines, MFA, Hyper-V, VMWare, Windows-Server, Active-Directory, GPO, DNS, DHCP, SAN-NAS, ISCSI, TCP-IP, NAT, Incident-Management, Automation, Monitoring ### Active Directory Specialist Synelience Portugal. Jul 2021 - Dec 2021 ```text Supported the harmonization of Active Directory management for a large enterprise client and the integration of cloud and on-premises identity services. Worked on IAM and user lifecycle management; administered Active Directory, GPOs, AD FS, PKI and file services in Windows Server 2016 environments. ``` Skills: Active-Directory, IAM, Identity-Lifecycle-Management, GPO, ADFS, PKI, File-Services, Windows-Server, VMWare, Hyper-V, LAN-WAN, Firewalls, VPN ### Senior Infrastructure Support Specialist III FDS, a DXC Technology Company. Jun 2020 - Apr 2021 ```text Provided specialized infrastructure support and Active Directory account administration for Caixa Geral de Depósitos. Diagnosed and resolved client/server issues; installed, configured and maintained systems, security solutions, firmware and patches. ``` Skills: Active-Directory, Infrastructure-Support, Client-Server-Troubleshooting, System-Installation, Configuration, Security-Solutions, Firmware, Patching, Maintenance ### Senior Infrastructure Consultant Rumos IT Services. Nov 2018 - Mar 2020 ```text Supported Fujitsu Remote Infrastructure Management services, including availability, patching, virtualization, incident investigation and ITIL change/release management. Contributed to the deployment of 300 printer driver packages through SCCM for GALP and supported Microsoft Teams and collaboration services for Navigator. ``` Skills: Remote-infrastructure-management, Patching, Virtualization, incident-investigation, IT-Change-Management, SCCM, Microsoft-Teams, Endpoint-Protection, Virtual-Machine-Resource-Allocation, Release-Testing ### IT Support Engineer CK Computer Solutions. Jan 2018 - Nov 2018 ```text Provided server, desktop and Office 365 support for small and medium-sized businesses, including installation, troubleshooting, patching and security updates. Administered backup solutions including Veeam, iDrive, KeepVault and Backblaze. ``` Skills: server-support, Desktop-Support, Office-365, Installation, Troubleshooting, Patching, Software-updates, Veeam, IDrive, KeepVault, Backblaze ### Microsoft Systems Engineer Indra Company. Apr 2016 - Feb 2017 ```text Administered Active Directory, AD FS, AD RMS, PKI, FIM, Azure MFA, Office 365 and Hyper-V; supported Windows Server and NetVault Backup environments. Supported the São Paulo State Military Police migration from Windows Server 2008 R2/2012 R2 to 2016 across five domain controllers and 100 application servers, including GPO, WSUS and SCCM configuration. ``` Skills: Active-Directory, ADFS, RMS, PKI, FIM, Azure-MFA, Office-365, Hyper-V, Windows-Server, NetVault, GPO, WSUS, SCCM, IIS, Change-Management, Technical-Documentation ### Freelance IT Support Freelance. Jan 2015 - Apr 2016 ```text Provided technical support to IT clients. ``` ### Senior Windows Systems Solution Architect Porto Seguro. May 2014 - Jan 2015 ```text Installed and integrated physical and virtual Windows Server environments and clusters; supported ITIL processes, project coordination and change management. ``` Skills: Windows-Server, Virtualization, Clustering, ITIL, Project-Coordination, Change-Management ### Technical Support Engineer BM&FBOVESPA. Sep 2011 - Aug 2013 ```text Supported a data center with 5,000 physical and 3,000 virtual servers, provisioning development, testing and QA environments and handling ITIL-based incidents. ``` Skills: Data-Center-Operations, Windows, Linux, Server-Provisioning, ITIL, Incident-Management ### IT Specialist [IBM](https://himalayas.app/companies/ibm-com). Dec 2008 - May 2011 ```text Supported the Tivoli Storage Manager migration from Royal Bank to Santander and Windows infrastructure covering 1,000 servers. ``` Skills: Tivoli-Storage-Manager, Migration, Windows-Infrastructure, server-support ### Infrastructure Analyst II HP / EDS. Feb 2006 - Aug 2008 ```text Administered Tivoli Storage Manager backup services for enterprise clients, including Vale, Abril, Visa, Braskem and Promon, supporting more than 1,500 servers daily. ``` Skills: Tivoli-Storage-Manager, Backup-Services, Enterprise-Accounts, server-support ## Education ### Rumos Professional Training, Microsoft 365 Identity and Services. 2019 - 2019 ```text Training in Microsoft 365 Identity and Services (MS-100) at Rumos in 2019. ``` ### Green Tecnologia Professional Training, Azure infrastructure, SCCM/Intune, Hyper-V/System Center. 2016 - 2016 ```text Training in Azure infrastructure, SCCM/Intune, and Hyper-V/System Center at Green Tecnologia in 2016. ``` ### EDS Professional Training, ITIL Foundation and IT asset management. 2006 - 2008 ```text Training in ITIL Foundation and IT asset management at EDS from 2006 to 2008. ``` ### Universidade Ibirapuera Degree, Information Technology. 1997 - 2000 ```text Degree in Information Technology from Universidade Ibirapuera, Brazil, from 1997 to 2000. ``` ## Tech stack - Microsoft Teams - PowerShell - Windows Server - AWS - Microsoft Sentinel - Microsoft Entra ID - Microsoft 365 To contact Francisco, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire). ## People also viewed - [Joao Cardoso](https://himalayas.app/@joaocardoso): Infrastructure SecOps Analyst, PSM Company - [Vinicius Lima Candido da Silva](https://himalayas.app/@viniciuslimacandidod): Enterprise Windows Engineer Sr, TitanClarity - [Kayo Patryc Lopes Franca](https://himalayas.app/@kayopatryclopesfranc): Cyber Security Analyst, Sicredi Porto Alegre - [Bruno Issaho](https://himalayas.app/@brunoissaho): Senior Analyst – Modern Workplace Engineering, Microsoft - [Jose Bellido](https://himalayas.app/@josebellido): Sr. Consultant Modern Workplace / Technical Leader, Avanade - [Gabriel Zamora](https://himalayas.app/@gabrielzamora): Technical Lead – Directory Services & Identity Engineering, Avanade - [Joana Paula User](https://himalayas.app/@joanapaulauser): Infrastructure Engineer, Infios - [Bruno Fagundes](https://himalayas.app/@brunofagundes): Senior Infrastructure & Network Specialist, Fagundes Tecnologia - [Gustavo De Oliveira Silva](https://himalayas.app/@osgustavo): IT Infrastructure Specialist, EISA - [Eliézer Martins da Silva](https://himalayas.app/@elizermartinsdasilva): Analista de Infraestrutura e Suporte, SayHelp Soluções