IT System Administrator

Description About Us Itaú Unibanco is the largest bank in Latin America, operating in 18 countries and celebrating 100 years of history in 2024. Alongside its scale and stability, Itaú is undergoing an enterprise‑wide transformation, embedding AI, advanced analytics, and digital platforms into core business decisions, from risk and operations to client engagement. As part of this organization, Itaú Private Bank applies these capabilities to wealth management, combining human expertise with intelligent, data‑driven insights to deliver more personalized and forward‑looking solutions for clients. About The Role The Senior IT System Administrator is responsible for the stability, security, and day‑to‑day operation of the bank’s IT infrastructure across cloud, on‑premises, and hybrid environments. This role combines deep technical expertise with hands‑on operational work, including routine system administration tasks, while independently handling complex issues and supporting infrastructure improvements. Duties & Responsibilities - Perform hands-on administration of Windows and Linux servers in cloud and hybrid environments. - Deploy, configure, and maintain cloud resources (compute, storage, networking). - Monitor systems, networks, and cloud platforms to ensure availability and performance. - Troubleshoot and resolve infrastructure, network, and security incidents, including routine operational issues. - Implement and maintain security controls (MFA, firewalls, endpoint protection, patching). - Administer identity and access management (Active Directory, IAM, GPOs, DNS, DHCP). - Manage backups, replication, and disaster recovery tasks, including regular validation. - S upport LAN/WAN, VPNs, and hybrid cloud connectivity. - Apply system updates, patches, and configuration changes following established procedures. - Automate operational and maintenance tasks using scripting (PowerShell, Bash). - Document configurations, procedures, and operational changes. - Participate in infrastructure and security projects. - Stay current with cybersecurity threats and infrastructure best practices. - On-call rotation for critical infrastructure support. - Occasional after-hours or weekend work for maintenance or incidents. Qualifications - Bachelor’s degree in IT, Computer Science, or equivalent practical experience. - 5+ years of experience in system administration or IT infrastructure roles. - Strong hands-on experience with: Windows and Linux server administration Virtualization (VMware / Hyper‑V) Networking fundamentals - Experience with Azure, Microsoft 365, and/or AWS. - Solid understanding of security principles and IT compliance frameworks (ISO, HIPAA, GDPR – preferred). - Comfortable performing both routine operational tasks and advanced troubleshooting independently. - English required; Portuguese and/or Spanish preferred. - Experience performing similar duties in similar highly regulated industries is preferred. Certifications (Preferred) - Azure Administrator (AZ‑104) - AWS Certification - CompTIA Security+ and/or Network+ - CCNA or ITIL Foundation