Realm of CloudSIMULATOR
0 XP
100% In-Browser Simulated Infrastructure

Real Incidents.
Simulated Systems.
Hands-On Mastery.

Step inside a simulated tech company. As production alerts, failing pipelines, and urgent colleague tickets flood in, investigate in an authentic terminal and code editor. Fix the root cause and get graded on the actual environment state.

Zero Cloud Bills
State-Based Grading
5 Company Stages
wkst-prod-sre-01:~
SIMULATED VFS
23 Engineering Tracks • 5 Company Stages
Choose Role Below ↓
Platform Career Hierarchy

How Progression Works in Every Track

Whichever engineering field you choose from the 23 tracks below, you advance through 5 realistic company maturity stages. Master each stage by resolving ≥70% of tickets and conquering high-stakes boss scenarios.

STAGE 15–20 engineers

The Startup

Seed to Series A (5–20 people)
Simulated Role
Solo Generalist / First DevOps Hire
Basics, single-cause problems, immediate production symptoms
Typical Infra:1–3 microservices, single cloud account, rudimentary CI
STAGE 250–100 engineers

Growing Company

Series B (50–100 people)
Simulated Role
Junior DevOps / Cloud Engineer
Multi-step fixes, config + tooling together, staging vs prod
Typical Infra:Several microservices, multiple staging environments, Dockerized pipelines
STAGE 3200–500 engineers

The Scale-Up

Series C/D (200–500 people)
Simulated Role
Senior SRE / Platform Engineer
Cross-system causes, automation, standards, blast radius mitigation
Typical Infra:Multi-region Kubernetes, distributed tracing, shared infrastructure modules
STAGE 41,000+ engineers

Enterprise

Public Enterprise (1,000+ people)
Simulated Role
Lead / Staff SRE
Messy legacy + modern systems, organizational trade-offs, compliance, risk
Typical Infra:Merged business units, hybrid cloud, policy-as-code, audit constraints
STAGE 55,000+ engineers

Global Corporation

Multinational Tech Giant (5,000+ people)
Simulated Role
Principal Architect / Head of Infrastructure
Strategy-level decisions, high-impact multi-cloud outages, massive cost and risk
Typical Infra:Multi-cloud, thousands of services, custom internal developer platforms
👇 Pick any track below to start your shift at Stage 1 (The Startup)
23 Engineering Fields

Choose Your Engineering Track

From Day-1 CI/CD pipelines to Enterprise Chaos Engineering. Pick a track to begin your on-call shift.

#1

DevOps / CI-CD

Master pipelines, broken builds, artifact packaging, automated deployments, rollbacks, and Git branching workflows.

Core FocusPipelines, build failures, deployments, rollbacks, Git workflows
5 Levels • 50 Scenarios
View Track
#2

Cloud Engineering

Design and debug cloud services across AWS, Azure, and GCP: compute VMs, VPC networking, object storage, and managed databases.

Core FocusAWS / Azure / GCP services, VPC, compute, storage, managed services
5 Levels • 50 Scenarios
View Track
#3

Site Reliability Engineering (SRE)

Define SLIs/SLOs, balance error budgets, orchestrate incident responses, eliminate operational toil, and run postmortems.

Core FocusSLIs/SLOs, error budgets, incidents, capacity, toil reduction, postmortems
5 Levels • 50 Scenarios
View Track
#4

Platform Engineering

Build internal developer platforms (IDP), curate golden paths, enable developer self-service, and standardize templates.

Core FocusInternal developer platforms, golden paths, self-service, templates
5 Levels • 50 Scenarios
View Track
#5

Infrastructure as Code (IaC)

Provision reproducible infrastructure with Terraform, OpenTofu, and Pulumi. Debug state drift, lockouts, and module refactoring.

Core FocusTerraform, state, modules, drift, Pulumi/CloudFormation concepts
5 Levels • 50 Scenarios
View Track
#6

Cloud FinOps & Cost

Audit runaway cloud bills, enforce resource tagging, rightsize overprovisioned compute, and optimize reservation commitments.

Core FocusCost analysis, tagging, rightsizing, reservations/savings plans, anomalies
5 Levels • 50 Scenarios
View Track
#7

DevSecOps

Embed security into delivery pipelines: SAST/DAST automation, secret leakage prevention, SBOM tracking, and container scanning.

Core FocusPipeline security, SAST/DAST, secrets, SBOM, image scanning, supply chain
5 Levels • 50 Scenarios
View Track
#8

Cloud Security & IAM

Enforce least-privilege policies, rotate exposed access keys, remediate public S3 buckets, and configure cloud audit trails.

Core FocusLeast privilege, policies, key rotation, misconfigurations, audits
5 Levels • 50 Scenarios
View Track
#9

Kubernetes & Containers

Troubleshoot CrashLoopBackOff pods, configure ingress controllers, debug network policies, and craft lean Docker multi-stage images.

Core FocusPods, deployments, networking, ingress, Helm, resource limits, debugging
5 Levels • 50 Scenarios
View Track
#10

Observability & Monitoring

Instrument metrics, configure Prometheus alerts, build intuitive Grafana dashboards, query OpenTelemetry distributed traces, and grep structured logs.

Core FocusMetrics, logs, traces, alerting, Prometheus, Grafana, dashboards
5 Levels • 50 Scenarios
View Track
#11

Release & Build Engineering

Orchestrate release trains, semantic versioning, artifact registries, feature flag cutovers, and canary/blue-green deployments.

Core FocusVersioning, artifact repos, release trains, feature flags, canary/blue-green
5 Levels • 50 Scenarios
View Track
#12

Linux / Systems Administration

Investigate zombie processes, out-of-disk inodes, broken systemd unit files, TCP socket exhaustion, and tricky Unix permissions.

Core FocusProcesses, disks, networking, services, permissions, performance
5 Levels • 50 Scenarios
View Track
#13

Cloud Networking

Debug DNS resolution issues, load balancer health checks, NAT gateway routing, security group rules, VPN tunnels, and TLS terminations.

Core FocusDNS, load balancers, routing, firewalls, VPN, CDN, TLS
5 Levels • 50 Scenarios
View Track
#14

Database Reliability (DBRE)

Manage database replication lags, automated failovers, slow query bottlenecks, connection pool starvation, and non-blocking migrations.

Core FocusBackups, replication, failover, slow queries, migrations, capacity
5 Levels • 50 Scenarios
View Track
#15

Incident Management & Production Support

Take the primary on-call pager, triage critical SEV-1 outages, run stakeholder communications, execute runbooks, and lead blameless RCAs.

Core FocusOn-call, triage, comms, escalation, runbooks, RCA
5 Levels • 50 Scenarios
View Track
#16

Configuration Management & Automation

Author idempotent Ansible playbooks, automate operational tasks with Bash and Python, and manage scheduled cron jobs safely.

Core FocusAnsible, scripting (Bash/Python), cron, idempotency
5 Levels • 50 Scenarios
View Track
#17

GitOps (Argo CD & Flux)

Implement declarative continuous delivery with Argo CD and Flux. Resolve sync drift, reconcile loops, and manage cluster application sets.

Core FocusArgo CD / Flux concepts, declarative state, reconciliation, drift
5 Levels • 50 Scenarios
View Track
#18

MLOps / LLMOps

Deploy large language models, orchestrate feature store pipelines, scale GPU worker clusters, and monitor model latency and drift.

Core FocusModel deployment, pipelines, GPU infra, monitoring, versioning
5 Levels • 50 Scenarios
View Track
#19

DataOps

Keep data pipelines healthy: orchestrate Airflow/dbt DAGs, run schema contract verifications, and prevent silent data pipeline corruption.

Core FocusData pipelines, orchestration, quality checks, reliability
5 Levels • 50 Scenarios
View Track
#20

Chaos & Resilience Engineering

Inject network latency, simulate sudden AZ power loss, validate RTO/RPO disaster recovery plans, and lead high-stakes game days.

Core FocusFailure injection, game days, DR, RTO/RPO, failover testing
5 Levels • 50 Scenarios
View Track
#21

Cloud Architecture

Evaluate multi-region trade-offs, design high-availability distributed systems, plan cloud migrations, and conduct Well-Architected reviews.

Core FocusDesign trade-offs, HA, scaling, migration, well-architected reviews
5 Levels • 50 Scenarios
View Track
#22

Developer Experience (DevEx)

Slash CI feedback loops from 25 minutes to 3 minutes, standardize devcontainers, optimize build caches, and streamline onboarding.

Core FocusBuild speed, local dev environments, tooling, onboarding
5 Levels • 50 Scenarios
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#23

Compliance & Governance

Write Policy-as-Code with OPA / Gatekeeper, gather automated SOC2 / ISO 27001 audit evidence, and manage rigorous change workflows.

Core FocusPolicy-as-code, audit evidence, standards, change management
5 Levels • 50 Scenarios
View Track