What we assess, interview for and operate

32 technologies

• Kubernetes (core)

  Workloads, scheduling, services, storage, nodes and control plane.

  Ready-made labsExpert interviewsManaged services

• etcd & control plane

  API server, scheduler, controller manager, etcd health and recovery.

  Ready-made labsExpert interviewsManaged services

• Kubernetes networking

  CoreDNS, kube-proxy, CNI behaviour, NetworkPolicy and ingress.

  Ready-made labsExpert interviewsManaged services

• Helm

  Chart authoring, release management and upgrade recovery.

  Expert interviewsManaged servicesTailored labs

• Rancher

  Multi-cluster management, provisioning and fleet operations.

  Expert interviewsManaged servicesTailored labs

• Amazon EKS

  Cluster design, node groups, IAM integration and upgrades.

  Expert interviewsManaged servicesTailored labs

• Argo CD

  Application delivery, sync strategies and multi-cluster GitOps.

  Expert interviewsManaged servicesTailored labs

• Flux

  GitOps reconciliation, Kustomize overlays and image automation.

  Expert interviewsManaged servicesTailored labs

• Ansible

  Configuration management and operational automation.

  Expert interviewsManaged servicesTailored labs

• Linux & systemd

  Service management, resource pressure and performance analysis.

  Ready-made labsExpert interviewsManaged services

• Container runtimes

  containerd, crictl and image lifecycle on nodes.

  Ready-made labsExpert interviewsManaged services

• AWS

  Networking, IAM, compute and managed services for platforms.

  Expert interviewsManaged servicesTailored labs

• Azure

  AKS, networking and identity for container platforms.

  Expert interviewsTailored labs

• Google Cloud

  GKE, networking and IAM for container platforms.

  Expert interviewsTailored labs

• Terraform & Terragrunt

  Module design, state management and safe refactoring.

  Expert interviewsManaged servicesTailored labs

• GitHub Actions

  Workflows, reusable actions, runners and release automation.

  Expert interviewsManaged servicesTailored labs

• GitLab CI

  Pipelines, runners and environment promotion.

  Expert interviewsManaged servicesTailored labs

• Jenkins

  Pipeline as code, agents and migration planning.

  Expert interviewsManaged servicesTailored labs

• Deployment strategies

  Rolling, blue-green and canary releases with safe rollback.

  Ready-made labsExpert interviewsManaged services

• Prometheus & Alertmanager

  Metrics, recording rules and actionable alerting.

  Expert interviewsManaged servicesTailored labs

• Grafana & Loki

  Dashboards, log aggregation and investigation workflows.

  Expert interviewsManaged servicesTailored labs

• VictoriaMetrics

  Long-term metrics storage and high-cardinality workloads.

  Expert interviewsManaged servicesTailored labs

• SLIs, SLOs & incident response

  Reliability targets, error budgets, on-call and post-incident review.

  Expert interviewsManaged servicesTailored labs

• Kubernetes RBAC

  Least-privilege access for people and workloads.

  Ready-made labsExpert interviewsManaged services

• Workload security

  Pod Security Admission, securityContext and runtime hardening.

  Ready-made labsExpert interviewsManaged services

• Audit & encryption at rest

  API audit policy and Secret encryption in etcd.

  Ready-made labsExpert interviewsManaged services

• Supply-chain security

  Image signing, provenance and admission policy.

  Expert interviewsTailored labs

• Secrets management

  External secret stores, rotation and access patterns.

  Expert interviewsManaged servicesTailored labs

• GPU-enabled Kubernetes

  GPU scheduling, device plugins and node pool design.

  Expert interviewsManaged servicesTailored labs

• Self-hosted LLM serving

  Model serving, inference capacity and rollout of model versions.

  Expert interviewsManaged servicesTailored labs

• RAG infrastructure fundamentals

  Vector stores, retrieval pipelines and operational concerns.

  Expert interviewsTailored labs

• AI-assisted SRE

  Using AI tools in incident investigation and operations, with human review.

  Expert interviewsManaged servicesTailored labs