AceStack AI Open interactive practice

Public task directory

Technical interview practice tasks

Every entry below is a crawlable link to a unique public task page. This directory complements the interactive filters and keeps the complete catalog connected through standard pagination.

Page 50 of 386 · 18,491 tasks

CI/Cd Debugger · Hard · 40 min

A pull-request workflow can request the production deployment role because a reusable workflow accepts an environment name from untrusted input. The role trust policy checks repository and branch but not workflow identity or protected

A pull-request workflow can request the production deployment role because a reusable workflow accepts an environment name from untrusted input. The role trust policy checks repository and.

CI/Cd Debugger · Hard · 40 min

A monorepo matrix workflow builds three services and deploys two environments. Under cancellation and retry, the production deploy for billing consumed the staging artifact for catalog because artifact names are not unique and the deploy

A monorepo matrix workflow builds three services and deploys two environments. Under cancellation and retry, the production deploy for billing consumed the staging artifact for catalog.

Incident Console · Medium · 35 min

EU checkout success fell from 99.9% to 62% and payment p99 rose to 4.8 seconds after application v2.41 and a database maintenance change landed in the same window. Traces show overlapping retries, replica lag is increasing, and one

EU checkout success fell from 99.9% to 62% and payment p99 rose to 4.8 seconds after application v2.41 and a database maintenance change landed in the same window. Traces show overlapping.

Incident Console · Medium · 35 min

Customers in two European regions intermittently receive NXDOMAIN for api.example.com after a DNS failover automation run. Global synthetic probes are mostly green, authoritative records look correct, and one application dashboard reports

Customers in two European regions intermittently receive NXDOMAIN for api.example.com after a DNS failover automation run. Global synthetic probes are mostly green, authoritative records.

Incident Console · Hard · 40 min

Payment authorization succeeds, but order confirmation is delayed by up to 38 minutes. Queue depth and oldest-message age are rising even though consumer pods are healthy. A partner timeout change, a retry-policy rollout, and a large replay

Payment authorization succeeds, but order confirmation is delayed by up to 38 minutes. Queue depth and oldest-message age are rising even though consumer pods are healthy. A partner timeout.

Infrastructure Review · Medium · 35 min

Review a Terraform production change that upgrades a checkout database, replaces an instance unexpectedly, broadens ingress to 0.0.0.0/0, and changes backup retention. State drift, a six-hour-old restore test, replication lag, and a narrow

Review a Terraform production change that upgrades a checkout database, replaces an instance unexpectedly, broadens ingress to 0.0.0.0/0, and changes backup retention. State drift, a.

Infrastructure Review · Hard · 45 min

A Terraform plan connects production analytics to a shared services VPC. It replaces route-table associations, adds a broad 10.0.0.0/8 route, grants sts:AssumeRole to an entire account, and stores transit-gateway IDs in manually edited

A Terraform plan connects production analytics to a shared services VPC. It replaces route-table associations, adds a broad 10.0.0.0/8 route, grants sts:AssumeRole to an entire account, and.

Infrastructure Review · Hard · 45 min

A Terraform plan rotates the database KMS key, reduces automated backup retention from 35 to 7 days, and recreates a read replica to adopt encryption. The primary cannot change keys in place. The newest restore test used the old key, one

A Terraform plan rotates the database KMS key, reduces automated backup retention from 35 to 7 days, and recreates a read replica to adopt encryption. The primary cannot change keys in.

Kubernetes Lab · Medium · 35 min

A checkout-api rollout is stuck in CrashLoopBackOff and available replicas are falling. The new manifest changes a Secret reference and readiness settings, while cluster health remains normal and an older ReplicaSet is still serving part of

A checkout-api rollout is stuck in CrashLoopBackOff and available replicas are falling. The new manifest changes a Secret reference and readiness settings, while cluster health remains.

Kubernetes Lab · Medium · 40 min

A fraud-api deployment is Pending after a regional node-pool rotation. Nodes are Ready and aggregate capacity appears sufficient, but the workload requests a GPU resource it does not use, requires a retired zone through node affinity, and a

A fraud-api deployment is Pending after a regional node-pool rotation. Nodes are Ready and aggregate capacity appears sufficient, but the workload requests a GPU resource it does not use.

Kubernetes Lab · Hard · 40 min

Pods for orders-api are Ready and the Service has endpoints, but checkout requests time out after a zero-trust NetworkPolicy rollout. Ingress from the gateway is allowed; egress permits DNS but not the PostgreSQL namespace because a label

Pods for orders-api are Ready and the Service has endpoints, but checkout requests time out after a zero-trust NetworkPolicy rollout. Ingress from the gateway is allowed; egress permits DNS.

Observability Case · Medium · 30 min

A pricing API team receives frequent CPU pages but still misses customer-visible latency incidents. Traffic varies by region and endpoint, retries distort request counts, batch clients tolerate more latency, and the last incident only

A pricing API team receives frequent CPU pages but still misses customer-visible latency incidents. Traffic varies by region and endpoint, retries distort request counts, batch clients.

Observability Case · Hard · 40 min

Order ingestion returns 202 quickly, but fulfillment events may take minutes. Teams page on queue depth, which rises predictably during promotions and says nothing about whether orders meet the promised processing time. Retries create

Order ingestion returns 202 quickly, but fulfillment events may take minutes. Teams page on queue depth, which rises predictably during promotions and says nothing about whether orders meet.

Observability Case · Hard · 40 min

An internal deployment platform reports 99.95% aggregate API availability, but small tenants experience 20-minute rollout delays whenever two large tenants run fleet-wide deployments. Aggregate latency hides queue fairness, cached status

An internal deployment platform reports 99.95% aggregate API availability, but small tenants experience 20-minute rollout delays whenever two large tenants run fleet-wide deployments..

On Call Leadership · Medium · 35 min

Lead a live checkout outage as the person coordinating the response. You do not need prior incident-management jargon: the interface explains each decision. Start by translating customer and revenue impact into Critical or Major priority,

Lead a live checkout outage as the person coordinating the response. You do not need prior incident-management jargon: the interface explains each decision. Start by translating customer and.

On Call Leadership · Hard · 40 min

A production API credential appears in a public build log. Audit shows use from the normal CI network and one unknown address. The credential is shared by 14 services, three cannot restart simultaneously, and security requests immediate

A production API credential appears in a public build log. Audit shows use from the normal CI network and one unknown address. The credential is shared by 14 services, three cannot restart.

On Call Leadership · Hard · 45 min

A cloud region loses part of its compute capacity during a product launch. The active region has 54% checkout failure, the standby region is healthy but sized for 35% of traffic, database replication lag is 11 seconds, and a full failover

A cloud region loses part of its compute capacity during a product launch. The active region has 54% checkout failure, the standby region is healthy but sized for 35% of traffic, database.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR SRE ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region objectives.

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR SRE ENGINEER interview. Assume a global product organization with regional cells, millions of.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR DEVOPS ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR DEVOPS ENGINEER interview. Assume a global product organization with regional cells, millions.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume a global product organization with regional cells.

Project Deep Dive · Medium · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE PLATFORM ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint is

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE PLATFORM ENGINEER interview. Assume a mature B2B product company, hundreds of services and.

Project Deep Dive · Medium · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE DEVOPS ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint is that

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE DEVOPS ENGINEER interview. Assume a mature B2B product company, hundreds of services and.

Project Deep Dive · Medium · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE SRE ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint is that

Tell me about a production platform or cloud migration you personally drove. Answer for a MIDDLE SRE ENGINEER interview. Assume a mature B2B product company, hundreds of services and.

Project Deep Dive · Hard · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR DEVOPS ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive constraint

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR DEVOPS ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR PLATFORM ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive constraint

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR PLATFORM ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR SRE ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive constraint is

Tell me about a production platform or cloud migration you personally drove. Answer for a SENIOR SRE ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF SRE ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery obligations. The

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF SRE ENGINEER interview. Assume a regulated financial or healthcare platform, high-value.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF DEVOPS ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery obligations. The

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF DEVOPS ENGINEER interview. Assume a regulated financial or healthcare platform, high-value.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF PLATFORM ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery obligations.

Tell me about a production platform or cloud migration you personally drove. Answer for a STAFF PLATFORM ENGINEER interview. Assume a regulated financial or healthcare platform, high-value.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL PLATFORM ENGINEER interview. Assume an enterprise modernization program, hybrid infrastructure, legacy dependencies, and multiple vendors.

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL PLATFORM ENGINEER interview. Assume an enterprise modernization program, hybrid.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL DEVOPS ENGINEER interview. Assume an enterprise modernization program, hybrid infrastructure, legacy dependencies, and multiple vendors. The

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL DEVOPS ENGINEER interview. Assume an enterprise modernization program, hybrid.

Project Deep Dive · Hard · 50 min

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL SRE ENGINEER interview. Assume an enterprise modernization program, hybrid infrastructure, legacy dependencies, and multiple vendors. The

Tell me about a production platform or cloud migration you personally drove. Answer for a PRINCIPAL SRE ENGINEER interview. Assume an enterprise modernization program, hybrid infrastructure.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR DEVOPS ENGINEER interview. Assume a consulting engagement across several client environments, heterogeneous clouds, maturity levels, and

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR DEVOPS ENGINEER interview. Assume a consulting engagement across several client environments.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume a consulting engagement across several client environments, heterogeneous clouds, maturity levels, and

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume a consulting engagement across several client.

Project Deep Dive · Easy · 40 min

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR SRE ENGINEER interview. Assume a consulting engagement across several client environments, heterogeneous clouds, maturity levels, and delivery

Tell me about a production platform or cloud migration you personally drove. Answer for a JUNIOR SRE ENGINEER interview. Assume a consulting engagement across several client environments.

Project Deep Dive · Medium · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE SRE ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE SRE ENGINEER interview. Assume a global product organization with regional cells.

Project Deep Dive · Medium · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE DEVOPS ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE DEVOPS ENGINEER interview. Assume a global product organization with regional cells.

Project Deep Dive · Medium · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE PLATFORM ENGINEER interview. Assume a global product organization with regional cells, millions of daily users and strict multi-region

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a MIDDLE PLATFORM ENGINEER interview. Assume a global product organization with regional cells.

Project Deep Dive · Hard · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR PLATFORM ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR PLATFORM ENGINEER interview. Assume a mature B2B product company, hundreds of services.

Project Deep Dive · Hard · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR DEVOPS ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint is

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR DEVOPS ENGINEER interview. Assume a mature B2B product company, hundreds of services and.

Project Deep Dive · Hard · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR SRE ENGINEER interview. Assume a mature B2B product company, hundreds of services and enterprise contracts. The decisive constraint is

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a SENIOR SRE ENGINEER interview. Assume a mature B2B product company, hundreds of services and.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF DEVOPS ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF DEVOPS ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF PLATFORM ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF PLATFORM ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF SRE ENGINEER interview. Assume a rapidly growing startup, a small team operating a fast-changing production stack. The decisive constraint

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a STAFF SRE ENGINEER interview. Assume a rapidly growing startup, a small team operating a.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL SRE ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL SRE ENGINEER interview. Assume a regulated financial or healthcare platform.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL DEVOPS ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL DEVOPS ENGINEER interview. Assume a regulated financial or healthcare platform.

Project Deep Dive · Hard · 50 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL PLATFORM ENGINEER interview. Assume a regulated financial or healthcare platform, high-value transactions with audit and recovery

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a PRINCIPAL PLATFORM ENGINEER interview. Assume a regulated financial or healthcare platform.

Project Deep Dive · Easy · 40 min

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume an enterprise modernization program, hybrid infrastructure, legacy dependencies, and multiple vendors.

Deep-dive on a reliability improvement whose effect you can defend with evidence. Answer for a JUNIOR PLATFORM ENGINEER interview. Assume an enterprise modernization program, hybrid.