What we are looking for:

At Insi, we are seeking a highly skilled and strategic Senior Linux Support Specialist to join our dynamic team in a high-impact, multinational environment. In this role, you will act as a key technical authority, driving the administration, architectural support, optimization, automation, security, and continuous improvement of our enterprise Linux environments.

This is an exciting opportunity to work with critical global infrastructure, cloud platforms, modern virtualization, container orchestration, and state-of-the-art observability systems. If you are passionate about solving complex engineering challenges, fostering a culture of innovation, and working alongside a collaborative global team, Insi is the place for you.

Main responsibilities:

• Administer and support highly complex, large-scale enterprise Linux environments, ensuring high availability and peak performance across major distributions (Red Hat, Rocky Linux, Ubuntu, SUSE).
• Lead deep-dive troubleshooting, incident response, and root-cause analysis (RCA) for critical infrastructure events.
• Design, develop, and implement robust automation solutions and Infrastructure as Code (IaC) workflows utilizing Ansible, Bash, and Python to drive operational efficiency.
• Manage and optimize enterprise-level network services and traffic management tools, including DNS, DHCP, NTP, Apache, Nginx, HAProxy, and load balancing configurations.
• Orchestrate, scale, and maintain virtualization platforms (VMware, KVM) and containerized ecosystems (Docker, Kubernetes, OpenShift).
• Implement and advocate for security best practices, system hardening, and vulnerability remediation across the infrastructure.
• Mentor, guide, and support junior and mid-level engineers, championing a culture of continuous learning and technical excellence.
• Collaborate closely with cross-functional, multinational teams to align infrastructure initiatives with overarching business goals and modern DevOps practices.

Requirements:

• Fluent/Native English communication skills (both written and verbal) to collaborate effectively within a multinational corporate environment.
• Proven experience as a Senior Linux Administrator, Support Engineer, or Systems Engineer in enterprise environments.
• Advanced technical knowledge of Linux operating systems, specifically Red Hat, Rocky Linux, Ubuntu, and SUSE.
• Solid scripting and programming capabilities for automation using Bash and Python.

Hands-on experience with configuration management and automation tools (Ansible, Puppet, Chef). Practical experience managing virtualization (VMware, KVM) and container platforms (Docker, Kubernetes, OpenShift). Familiarity with cloud environments (Azure, AWS, GCP) and modern CI/CD pipelines (GitLab, Jenkins, Azure DevOps, GitHub Actions).

• Experience with enterprise monitoring, logging, and observability tools such as Prometheus, Grafana, ELK, and Splunk.
• Strong understanding of networking concepts and security protocols, including TCP/IP, DNS, DHCP, VPNs, Firewalls, and Load Balancing.
• Strong analytical thinking, exceptional problem-solving abilities, and a proven track record of technical leadership.
• A continuous improvement mindset, proactive decision-making skills, and a results-oriented approach.
• Excellent interpersonal skills, with the ability to collaborate, focus on customer satisfaction, and influence without direct authority.

Nice to have:

• Official Red Hat certifications (RHCSA, RHCE, or RHCA) or Certified Kubernetes Administrator (CKA/CKAD).
• Associate or Professional level certifications in AWS, Azure, or GCP.
• Experience working with Agile frameworks (Scrum, Kanban) and ITIL processes.
• Knowledge of advanced storage technologies (SAN, NAS, Ceph, GlusterFS) and disaster recovery planning.

Location:

• Remote

Who is Insi?

We are a consulting firm specialized in digital evolution. But above all, we are a company of people. People who listen before proposing. Who get to the core before offering a solution. Who measure success by what truly changed, not by what was simply implemented.

With over three decades of history and a global presence, we believe that true transformation begins from within: within people, teams, and organizations. And it is this conviction that guides every choice we make, every project we deliver, and every person we develop.

Why build your career at Insi?

Because here you think, decide, and create together. We offer autonomy, clear goals, and an environment where Insiders have the space to interact with different technologies, participate in challenging projects, bring new ideas, and work from anywhere in Brazil and (why not?) the world.

We are one of the best companies to work for in Brazil according to Great Place to Work and are among the top 10 best employers in Brazil according to TIME magazine.

What are our values?

• We are people serving people
• We think and act like owners
• We hunger for performance
• We grow and learn together
• We seek excellence and simplicity
• We have innovation and creativity in our DNA

Everyone is welcome regardless of background, disability, ethnicity, religious belief, sexual orientation, appearance, age, or any other status. We want you to grow with us in a welcoming environment filled with opportunities.

Did you identify with this? Then, #VemSerInsi