Senior Systems Administrator
Job Summary
Job Description
As a Senior Systems Administrator, you will be enhancing and supporting the VPN, DNS, and proxy infrastructure of a highly distributed network. Your primary role will be to improve performance, create new solutions for scalability, and enhance existing processes. You will design, enhance, and maintain internet-security platforms, augment system monitoring, investigate and resolve incidents, participate in architecture and design discussions, deliver project work, and collaborate with peers on technical challenges. The role also includes participating in an on-call rotation.
Must have:
- Senior-level Linux system administration in high-traffic environments (5-7 years).
- Recent team lead or mentoring responsibility.
- Deep Linux knowledge (CentOS/RHEL), strong command-line proficiency.
- Virtualization: KVM / QEMU.
- Containers & orchestration: Docker; Swarm/Kubernetes (EKS, ECS).
- Scripting & automation: Bash and Python.
- CI/CD: GitLab pipelines and related tooling.
- Hands-on with tools such as: Prometheus, Grafana, Nagios, Elasticsearch, Logstash, Kibana (ELK).
- 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.
- Self-starter with minimal supervision.
- Eager problem solver seeking process and performance improvements.
- Comfortable reading and writing technical documentation in English.
- Service-oriented teammate with excellent communication skills.
Good to have:
- Experience administering Elasticsearch/Grafana/Kibana clusters.
- Familiarity with formal change-management policies and processes.
- Demonstrated success supporting or evolving customer-facing security products.
22 skills required
Job Details
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.
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