System Administrator/DBA Sênior

Accountabilities:: Manage Linux infrastructure: Administer, maintain, and optimize Linux servers in critical production environments, ensuring system reliability, availability, security, and operational continuity. Administer virtualized environments: Configure and maintain virtual machines, hypervisors, and virtualization infrastructure using technologies such as KVM, Proxmox, and VMware. Manage Oracle databases: Install, configure, maintain, and optimize Oracle database environments, ensuring performance, stability, availability, and data integrity. Monitor and optimize system performance: Diagnose performance issues across servers, virtualization platforms, storage systems, and operating environments, implementing appropriate tuning and optimization measures. Ensure security and resilience: Implement and maintain security policies, backups, restoration procedures, disaster recovery practices, and business continuity measures. Monitor infrastructure health: Analyze system logs, monitor infrastructure performance, apply software updates and security patches, and address vulnerabilities proactively. Manage enterprise storage solutions: Configure and maintain storage infrastructure, including technologies such as EMC VNX and HP 3PAR, working with SAN architectures, volumes, LUNs, and multipath configurations. Support capacity planning and benchmarking: Contribute to infrastructure capacity planning, performance benchmarks, technical testing, and the development of infrastructure blueprints to support evolving business requirements. Troubleshoot complex technical issues: Investigate infrastructure incidents systematically, identify root causes, implement corrective actions, and minimize service disruptions. Develop automation solutions: Create and maintain scripts and automated operational routines to improve infrastructure administration, consistency, and efficiency. Collaborate across technical teams: Provide remote technical support and work closely with development, database, networking, and infrastructure professionals to resolve issues and maintain service quality. Leverage AI and intelligent automation: Evaluate and apply generative AI tools and AI agents to support infrastructure administration, diagnostics, observability, troubleshooting, and operational optimization. Maintain technical standards: Contribute to continuous improvement by documenting procedures, refining operational workflows, and promoting reliable infrastructure management practices. Requirements: Professional experience: At least five years of proven experience in system administration and database administration, with substantial hands-on experience managing Linux servers and Oracle databases. Linux administration: Strong expertise in administering, maintaining, troubleshooting, and optimizing Linux-based server environments. Virtualization technologies: Experience managing virtualized infrastructure, virtual machines, and hypervisors, preferably using KVM, Proxmox, and/or VMware. Oracle database administration: At least five years of experience installing, configuring, maintaining, and troubleshooting Oracle databases. Infrastructure monitoring and troubleshooting: Experience analyzing logs, monitoring server health, diagnosing technical incidents, and resolving infrastructure performance issues. Backup and recovery: Knowledge of backup and restoration procedures, disaster recovery, infrastructure security, and business continuity practices. Storage and SAN technologies: Practical experience with storage infrastructure and an understanding of SAN architectures, volumes, LUNs, and multipath configurations. High availability and clustering: Experience working with high-availability environments and clustered infrastructure, ensuring resilience and minimizing downtime. Automation and scripting: Experience or a strong interest in infrastructure automation using generative AI and AI agents. Familiarity with Bash, Python, Ansible, or similar tools is an advantage. Monitoring tools: Familiarity with infrastructure monitoring solutions such as Zabbix, Nagios, or Prometheus is desirable. DevOps technologies: Basic knowledge of Docker, Kubernetes, and related DevOps practices is a plus. Cloud infrastructure: Familiarity with cloud platforms such as AWS or Oracle Cloud Infrastructure (OCI) is desirable. Education: Bachelor's degree in Information Technology, Computer Science, Software Engineering, or a related field. English proficiency: Intermediate English skills, with the ability to read technical documentation, write clearly, and participate in professional conversations. Analytical and problem-solving skills: Strong troubleshooting capabilities, structured thinking, attention to detail, and the ability to investigate complex technical issues methodically. Communication and teamwork: Ability to communicate technical problems clearly, collaborate effectively with multidisciplinary teams, and provide reliable remote support. Adaptability and innovation: Interest in emerging technologies, continuous improvement, and the practical application of AI to infrastructure management. Benefits: Fully remote work: Work from home anywhere in Brazil. Employment contract: Full-time employment under the Brazilian CLT regime. Company laptop: Equipment provided to support your daily responsibilities. Meal and food allowance: VA/VR benefits through Pluxee (formerly Sodexo). Health insurance: Medical coverage to support your health and well-being. Dental insurance: Dental coverage as part of the benefits package. Wellhub membership: Access to fitness and wellness services through Wellhub, formerly Gympass. Home office allowance: Financial support for remote working expenses. Technical development: Opportunities to work with enterprise infrastructure, database technologies, virtualization, automation, and emerging AI-powered operational tools.