Browse by field of study
Computer & Information Sciences Challenges
Real-world challenges across Computer & Information Sciences. Pick the specific field you're studying, solve an actual brief, and walk away with verified, portable proof recruiters can confirm in one click.
Recommended challenges
- CodeIntermediateNew
Instrument Network Telemetry for an ISP's Backbone
Receive the backbone topology (12 routers across 4 PoPs, mix of Cisco IOS XR + Juniper Junos), the current SNMP-based monitoring stack, and 4 weeks of customer-complaint tickets…
- Network Telemetry
- Gnmi
- Kafka
Advanced Computer Networks - CodeIntermediateNew
Build a Custom Kubernetes Operator for a Multi-Tenant SaaS
Receive the current Helm + bash setup, a description of the per-tenant resources to manage, and the cluster details (EKS 1.29, Strimzi for Kafka). Design a TenantPipeline CRD wi…
- Kubernetes Operators
- Crds
- Kubebuilder
Container Orchestration with Kubernetes - DesignIntermediateNew
Design Multi-Tenant Network Policies with Calico Tier Enforcement
Receive the cluster topology (120 customer namespaces + 4 platform namespaces), the application traffic patterns (frontend talks to backend talks to its tenant's database), and …
- Kubernetes
- Network Policy
- Calico
Container Orchestration with Kubernetes - CodeBeginnerNew
Tune Autoscaling for a Cost-Sensitive Workload with HPA + KEDA
Receive the service's current Deployment + HorizontalPodAutoscaler config (static 12-20 replicas), 90 days of traffic logs + Kafka-lag metrics, and the SLA (p99 < 250ms, error r…
- Kubernetes
- Autoscaling
- Keda
Container Orchestration with Kubernetes Practice your coursework on real scenarios.
Every challenge is shaped from real-world context — not generic exercises. The work mirrors what your degree prepares you for.
Why Ewance
- CodeIntermediateNew
Migrate Stateful Workloads to StatefulSets with Storage Class Tuning
Receive the current Redis Sentinel topology (3 nodes, ~120GB data), the EBS gp3 baseline performance requirements (3,000 IOPS, 125 MB/s), and the cluster (EKS 1.29 with the EBS …
- Kubernetes
- Statefulsets
- Storage Classes
Container Orchestration with Kubernetes - CodeIntermediateNew
Build a GitOps Rollout Pipeline with ArgoCD Progressive Delivery
Receive the current CI pipeline (GitHub Actions runs kubectl apply against EKS), one representative service (Go API, 8 replicas, 4ms p99 SLO, 0.1 percent error-rate SLO), and ac…
- Kubernetes
- Gitops
- Argocd
Container Orchestration with Kubernetes - CodeBeginnerNew
Ship a Production CI/CD Pipeline for a Fitness-Studio CRM Startup
Using the FlexDesk starter service and Dockerfile, the current-deploy case file, and the pipeline requirements spec provided, build a complete continuous integration and continu…
- Ci Cd
- Github Actions
- Container Signing
Open coursework - CodeIntermediateNew
Refactor a Tangled Terraform Repo for a Multi-Account AWS Estate
Working only from the materials provided — the de-identified repository snapshot, the account-and-region inventory, the plan-timing-and-drift readout, and the platform team's in…
- Terraform
- Terragrunt
- Infrastructure As Code
Open coursework - Browse challenges
Explore role
Marketing Analyst
Plan and measure campaigns that grow the business. Funnel analytics, attribution, segmentation, and the rigorous measurement that lets marketing defend its budget at the leadership table.
- DesignIntermediateNew
Observability for a Microservices Payments Platform
Design the observability architecture: OpenTelemetry traces from 38 services into Tempo, structured logs via Loki, RED (rate, errors, duration) metrics via Prometheus, SLOs defi…
- Observability
- Opentelemetry
- Slo Design
Open coursework - CodeSeniorNew
Harden a Container Supply Chain to SLSA Level 3
Audit the current build and deploy pipeline against the SLSA 1.0 specification. Identify SLSA-3 gaps (typically: provenance generation, hermetic builds, two-person review, signe…
- Supply Chain Security
- Slsa
- Sigstore
Open coursework - DesignIntermediateNew
Design a Zero-Downtime Multi-Region PostgreSQL Migration for an EdTech Platform
Using the infrastructure inventory (infra-inventory), the database schema sample (schema-subset), the workload metrics (workload-metrics), and the service-level brief (sla-brief…
- Blue Green Deployment
- Logical Replication
- Postgresql
Open coursework 
DesignBeginnerNewMove an EdTech Platform's 4 Clusters to GitOps with ArgoCD
Using only the materials provided — the migration case file (incident_dossier), the service inventory dataset (service_inventory), and the platform team's target-state brief (ta…
- Argocd
- Kubernetes
- Kustomize
Open courseworkBuild a verifiable portfolio.
Submissions become evidence. Reviewers with shipping experience score against a rubric; the result becomes a credential anyone can verify.
Why Ewance
DesignBeginnerNewDesign a Canary Deployment Strategy for Corso Nove Checkout
Using the incident postmortem (incident-postmortem), the platform architecture spec (platform-architecture-spec), the per-service reliability targets (slo-targets-brief), and th…
- Flagger
- Argo Rollouts
- Canary Deployment
Open coursework- DesignBeginnerNew
Design Secrets Management for a Regulated GitOps Pipeline
Design the secrets topology: Vault as the single source, External Secrets Operator (ESO) syncing into Kubernetes Secrets with auto-rotation. SecretStore + ClusterSecretStore bou…
- External Secrets Operator
- Hashicorp Vault
- Secrets Management
GitOps and Continuous Delivery 
CodeBeginnerNewBuild PR-Based Environment Promotion for an HVAC SaaS
Using the provided GitOps starter repository sample and the promotion specification, stand up Flux v2 with its image-reflector and image-automation controllers and define semant…
- Flux
- Image Automation
- Github Actions
Open coursework
CodeIntermediateNewDrift-Detect and Self-Heal a Multi-Tenant Kubernetes Estate
Using the estate-case-file and the baseline-policy-spec, design a drift-detection and self-heal rollout for all 28 single-customer clusters built on ArgoCD continuous-sync (auto…
- Argocd
- Kyverno
- Drift Detection
Open coursework- CodeIntermediateNew
Roll Out OpenTelemetry Tracing Across a Microservices Fintech
Receive an anonymized service map (90 services, payment-critical path of 12), a runtime mix (Node.js, Go, Java), and existing logging/metrics setup. Define: an OTel SDK adoption…
- Distributed Tracing
- Opentelemetry
- Sampling Strategies
Software Observability - DesignIntermediateNew
Design SLO-Driven Alerts for a Telco's Subscriber API
Receive a 90-day RED (Rate, Errors, Duration) metrics export for the subscriber API across 6 endpoints and 38 weeks of paging history. Define an SLO per endpoint (e.g., 99.9 per…
- Slo Design
- Alerting
- Prometheus
Software Observability - AnalysisIntermediateNew
Diagnose Route-Optimize Latency Tail Using Distributed Traces
Working only from the four supplied materials — the slow-trace export, the service map, the customer complaint log, and the infrastructure health readings — examine why the slow…
- Distributed Tracing
- Performance Analysis
- Tempo
Open coursework - AnalysisBeginnerNew
Flatten the Datadog Bill for a Stockholm Gaming Studio
Working only from the materials provided, audit Stagelight Games' observability spend and produce a defensible plan to flatten it. Use the metric inventory export to rank the to…
- Cardinality Control
- Datadog
- Cost Optimization
Open coursework - DesignBeginnerNew
Design Structured JSON Logging for a Healthcare Rails Monolith
Working only from the three materials provided, design and propose a structured-logging migration for the Rails monolith. Study the current logger configuration (provided code m…
- Structured Logging
- Loki
- Phi Redaction
Open coursework - DesignBeginnerNew
Design a Golden-Path Service Template for a Scaling SaaS Platform Team
Using the current-state assessment (provided), the platform team's golden-path requirements specification (provided), and the baseline deployment-metrics dataset (provided), des…
- Platform Engineering
- Golden Paths
- Backstage
Open coursework - CodeIntermediateNew
Stand Up a Backstage Developer Portal for a Frankfurt Fintech
Using the provided service inventory, ownership map, and rollout brief, build and deploy a Backstage portal on the company's existing Kubernetes platform and populate its catalo…
- Backstage
- Platform Engineering
- Service Catalog
Open coursework - DesignBeginnerNew
Design a 90-Day Cognitive-Load Reduction Plan for Six Squads
Using the cognitive-load self-assessment instrument, the squad tool-surface inventory, and the platform stakeholder brief provided to you, design a cognitive-load reduction prop…
- Platform Engineering
- Cognitive Load
- Team Topologies
Open coursework
How it works
From brief to credential, in six steps.
Step 01
Browse challenges aligned to your studies.
Step 02
Accept the one that fits your goals.
Step 03
Work through it with AI Copilot guidance.
Step 04
Submit for structured evaluation.
Step 05
Earn a verified credential.
Step 06
Add it to LinkedIn with one click.
Industry teams behind a decade of practitioner briefs
Hiring from this pool?
Sponsor a challenge and meet candidates through actual work.
Industry teams can shape briefs around the skills they hire for, then evaluate students on rubric-scored deliverables — not resumes.