Senior Infrastructure Engineer

We are seeking a Senior Infrastructure Engineer with deep experience in cloud infrastructure, Linux internals, large-scale distributed systems, workload isolation, and a strong security mindset to join our team and help design, build, and operate a global, resilient platform.

Responsibilities

• Design, build, and maintain a global, distributed, and resilient cloud infrastructure
• Collaborate with infrastructure and product engineering teams to plan and deliver complex platform initiatives
• Participate in architecture reviews, incident response, and performance analysis to ensure system reliability
• Manage and provision AWS infrastructure using Terraform and Kubernetes
• Write and maintain Kubernetes manifests and deployment configurations for critical workloads, including pod security contexts, anti-affinity rules, network policies, autoscaling, and health probes
• Drive Production Readiness Reviews (PRR) for all new services, covering security, HA, performance, and observability gates
• Design and operate multi-layer workload isolation using Linux kernel primitives: namespaces (pid, net, mnt, user, uts, ipc), cgroups, seccomp profiles, and capabilities, as the baseline security boundary
• Evaluate and operate gVisor and Firecracker for workloads requiring hard tenant boundaries and near-native performance
• Design and maintain Grafana dashboards
• Manage Prometheus and VictoriaMetrics pipelines; define and tune P1/P2/P3 alert thresholds with runbooks
• Contribute to and extend the internal k6-based load testing framework (load-testing-framework / library/k6/webhooks)
• Design load scenarios using constant-arrival-rate profiles; instrument custom metrics (job_succeeded_count, job_failed_count) tagged by testid for Grafana correlation; stream test metrics to Prometheus via remote write; generate and publish HTML reports to file storage after each run

Requirements

• 5+ years of experience in infrastructure, SRE, or platform engineering roles
• Expertise in distributed systems and cloud-native architectures
• Understanding of Linux internals: namespaces, cgroups, seccomp, capabilities, and system-level performance tuning
• Experience operating infrastructure on AWS at scale
• Proficiency in Terraform and Kubernetes, including security hardening of manifests
• Experience designing and running load tests (k6, Gatling, Locust, or similar)
• Understanding of network security and cloud security best practices
• Excellent analytical, troubleshooting, and communication skills
• Proficiency in English at a B2+ level

Nice to have

• Skills in Golang/Python for building internal tooling
• Familiarity with Kafka, Redis, ClickHouse, or PostgreSQL
• Familiarity with observability tools such as Grafana, Prometheus, or VictoriaMetrics
• Knowledge of encryption key hierarchies (CMK/DEK/KMS patterns) and HashiCorp Vault
• Hands-on production experience with gVisor or Firecracker
• Prior work extending or maintaining an internal testing framework
• Contributions to or maintenance of open-source infrastructure projects