Senior Security Infrastructure Engineer

This is a fully remote position, open to applicants in Poland.

📋 Description

• Design, implement, and oversee the infrastructure for the security team.

• Guarantee the high availability and dependability of security platforms through proactive monitoring, alerting, and capacity management.

• Manage and advance cloud infrastructure across dedicated servers in data centers and various cloud providers.

• Automate routine operational tasks, including provisioning, configuration management, patching, and secret rotation.

• Serve as the primary technical owner for troubleshooting and resolving infrastructure incidents.

• Maintain documentation for infrastructure, including architecture diagrams, runbooks, and change logs.

• Collaborate with security engineers to ensure that the underlying platforms satisfy tooling and integration requirements.

⛳️ Requirements

• Over 5 years of practical experience in Linux system administration within production settings.

• Extensive knowledge of Linux internals, covering systems, networking stack, storage, and performance tuning.

• Strong understanding of networking principles, including TCP/IP, DNS, TLS, routing, and firewalling (iptables / nftables).

• Experience with bare-metal and dedicated server environments, such as Hetzner or similar providers.

• Practical experience in deploying, operating, and securing Kubernetes clusters in production, which includes cluster lifecycle management, CNI networking (Cilium preferred), storage, and RBAC.

• Experience in deploying, configuring, and managing ClickHouse and PostgreSQL in a production context.

• Hands-on experience with operating and maintaining Keycloak in a production environment, including high availability setup, backend management, and realm/client configuration.

• Familiarity with identity protocols such as OIDC, SAML 2.0, and OAuth 2.0.

• Practical experience managing infrastructure across cloud platforms and dedicated servers, including compute, networking, storage, and cost optimization.

• Proficient in Infrastructure as Code tools like Terraform, SaltStack, and Ansible.

• Strong scripting abilities in Python and/or Go for automation and operational tooling.

• Experience in building and maintaining monitoring stacks such as Prometheus, Grafana, and Alertmanager.

• Familiarity with log management and aggregation tools like Vector, Loki, or ELK.

• Excellent written and verbal communication skills, with a clear and structured approach.

• Upper-Intermediate (B2) English proficiency or higher.

🏝️ Benefits

• Opportunities for full-time remote work and flexible working hours.

• Private insurance coverage.

• An additional day off each calendar year.

• Compensation for sports programs.

• Comprehensive mental health program.

• Free online English lessons with a native speaker.

• A generous referral program.

• Training, internal workshops, and opportunities to participate in international professional conferences and corporate events.