Senior Systems Administrator

Ziff Davis; Guadalajara; Presencial; USD 45,000 - 70,000; Jornada completa

Descripción de la vacante

A leading company in the tech industry is seeking a Senior Systems Administrator to support and enhance their VPN, DNS, and proxy infrastructure. This role is crucial for maintaining the backbone of their global VPN platforms, requiring expertise in Linux, networking, and automation tools. The ideal candidate will have substantial experience in high-traffic environments, a strong problem-solving mindset, and excellent communication skills to collaborate effectively with both technical and non-technical teams.

Formación

• 5-7 years of senior-level Linux system administration experience.
• Strong command-line proficiency and experience with virtualization.
• Eager problem solver with experience in high-traffic environments.

Responsabilidades

• Design and maintain internet-security platforms.
• Investigate and resolve production incidents.
• Participate in architecture discussions for scalable solutions.

Conocimientos

Linux

Networking

Security

Scripting

Problem Solving

Herramientas

Docker

Kubernetes

GitLab

ELK Stack

Terraform

Descripción del empleo

Description

As a Senior Systems Administrator, you will be working to enhance and support the VPN, DNS and proxy infrastructure of a highly distributed network of systems that serve as the backbone of global VPN platforms. Your primary role will be to improve performance, create new solutions for scalability and enhance existing processes. Key Responsibilities

• Design, enhance, and maintain internet-security platforms (VPN, DNS, proxy) through robust tooling and automation.
• Augment system monitoring for better availability, visibility, alerting, and proactive capacity planning.
• Investigate, troubleshoot, and resolve production incidents surfaced by internal monitoring or external reports.
• Participate in architecture and design discussions to define scalable solutions for new and existing services.
• Deliver project work for new business initiatives: environment build-out, infrastructure upgrades, product enhancements, and new-feature rollouts.
• Collaborate with peers on complex technical challenges while also executing individual contributor tasks.
• Participate in an 1-in-5 on-call rotation covering evenings, weekends, and holidays as business needs dictate.

Professional Experience

• Senior-level Linux system administration in high-traffic, fault-tolerant environments (typically 5-7 years).
• Recent team lead or mentoring responsibility.

Technical Expertise

• Deep Linux knowledge (CentOS/RHEL or similar), strong command-line proficiency.
• Virtualization: KVM / QEMU.
• Containers & orchestration: Docker; Swarm/Kubernetes (EKS, ECS).
• Scripting & automation: Bash and Python.
• Experience with several of the following: Salt / Salt Stack, Ansible, Puppet, Terraform, Vault.
• CI/CD: GitLab pipelines and related tooling.
• Hands-on with tools such as: Prometheus, Grafana, Nagios, Elasticsearch, Logstash, Kibana (ELK).
• Datacenter infrastructure and performance tuning for optimal system health.

Networking & Security

• Strong understanding of TCP/IP, HTTP, DNS, routing, and packet analysis.
• Firewall and traffic control: iptables / ipsets.
• VPN protocols and proxy technologies: WireGuard, OpenVPN, StrongSwan.

Personal Attributes

• Self-starter who enjoys working independently and close collaboration with peers with minimal supervision.
• Eager problem solver who actively seeks process and performance improvements.
• Comfortable reading and writing technical documentation in English; day-to-day team communication is in English
• Service-oriented teammate with excellent verbal and written communication skills; able to convey complex technical concepts to non-technical stakeholders.

Desired (Nice-to-Have)

• Experience administering Elasticsearch/Grafana/Kibana clusters at scale.
• Familiarity with formal change-management policies and processes.
• Demonstrated success supporting or evolving multiple customer-facing security products.