System Administrator/DBA Sênior in Brazil at Jobgether

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a System Administrator/DBA Sênior based in Brazil.

We are seeking an experienced System Administrator and Database Administrator to manage, optimize, and secure critical IT infrastructure in a fully remote environment. In this role, you will oversee Linux servers, virtualized environments, Oracle databases, and enterprise storage solutions, ensuring system stability, performance, and high availability. You will play a key role in troubleshooting complex infrastructure issues, strengthening security measures, and implementing reliable backup and recovery strategies. Working closely with development, database, networking, and infrastructure teams, you will contribute to capacity planning, performance optimization, and operational efficiency. The position also offers the opportunity to explore AI-powered tools and intelligent agents to automate routine tasks, improve observability, and accelerate technical diagnostics. This is an excellent opportunity for a senior IT professional who enjoys solving complex challenges and building resilient, secure, and scalable infrastructure.

• 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.

• 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.

• 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.