Computer & Information Sciences
Information Technology Challenges
Real IT projects on Ewance — plan, secure, and operate the infrastructure and services a modern organisation runs on. Solve them to build a portfolio of verified, recruiter-checkable proof you can do the work — not just describe it.
Recommended challenges
- AnalysisIntermediateNew
Debug Latency Tail With Distributed Tracing on a Logistics SaaS
Receive 7 days of anonymized trace data in Tempo, the service map (12 services), and the customer complaint log. Investigate: filter the slowest 1 percent of traces, identify th…
- Distributed Tracing
- Performance Analysis
- Tempo
Software Observability - AnalysisIntermediateNew
Vehicle-to-Everything (V2X) Communication Trial Analysis
Load the anonymised dataset (logged packet RX/TX, PC5 sidelink RSSI, RSRP, SINR, vehicle trajectory, application latency for safety messages). Compute the canonical 3GPP Release…
- C V2x
- Pc5 Sidelink
- Wireless Performance Analysis
Wireless and Mobile Networks - StrategyIntermediateNew
Refactor a Tangled Terraform Repo for a Multi-Account AWS Estate
Audit the existing repo and produce a dependency map across modules and accounts. Design the target layout: account-level base modules, region-level shared infra, environment-le…
- Terraform
- Terragrunt
- Infrastructure As Code
DevOps and Secure Deployment - CodeBeginnerNew
Observability Injection: Distributed Tracing via Sidecars
Enable Envoy tracing with the OpenTelemetry tracer in Istio MeshConfig. Configure a Tempo backend with a Grafana frontend. Verify W3C tracecontext propagation across all 26 serv…
- Distributed Tracing
- Opentelemetry
- Envoy
Service Mesh and Microservices Networking Develop in-demand professional skills.
Each challenge names the skills it strengthens. Over time, your profile fills with the competences a hiring manager would actually look for.
Why Ewance
- 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 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 - DesignSeniorNew
Multi-Region Active-Active Architecture for a Gaming Backend
Read the current architecture (single-region: ECS + RDS Aurora + Redis + S3) and traffic mix (around 60 percent APAC, 25 percent NA, 15 percent EU). Design a 3-region active-act…
- Multi Region Architecture
- AWS
- Terraform
Cloud Computing - AnalysisBeginnerNew
Postmortem and Action-Item Tracking for a 3-Service Outage
Re-write the existing postmortem using the Google SRE blameless format: timeline (anchored to UTC), what went well, what went poorly, where we got lucky, action items (S.M.A.R.T…
- Postmortems
- Blameless Culture
- Action Item Tracking
Site Reliability Engineering - Browse challenges
Explore role
Strategy Analyst
Frame the business question, model the options, build the recommendation. From market sizing to competitive analysis, this role is where strategy consulting meets in-house decision-making.
- StrategyIntermediateNew
5G Network Slicing Strategy for a Smart-Port Pilot
Inventory the 3 workloads with concrete numbers (e.g., 'straddle carriers: 12 ms one-way latency, 99.999 percent availability, 50 Mbps uplink'). Design 3 5G network slices (eMBB…
- 5g Network Slicing
- Cellular Networks
- Qos Design
Wireless and Mobile Networks - AnalysisBeginnerNew
Measure and Reduce Developer Cognitive Load Across 6 Squads
Run the Team Topologies team self-assessment (cognitive-load survey, 12 questions) with 5 representatives per squad (30 total). Inventory each squad's tool surface: services own…
- Platform Engineering
- Cognitive Load
- Team Topologies
Platform Engineering - 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 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 Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
- CodeSeniorNew
Envoy WASM Filter for Per-Tenant Rate Limiting
Implement the filter in Rust using the proxy-wasm-rust-sdk. The filter computes a (tenant_id, endpoint, method) key, calls a Redis token-bucket service via a sidecar HTTP client…
- Envoy
- Wasm
- Rust Programming
Service Mesh and Microservices Networking - DesignBeginnerNew
Build a Wi-Fi 6E Site Survey for an Industrial IoT Deployment
Receive the warehouse floor plan (CAD + obstruction inventory), the AMR fleet's RF requirements (6 GHz preferred, -67 dBm minimum, <50ms handover), and the existing Wi-Fi 5 site…
- Wireless Networks
- Wifi 6e
- Site Survey
Advanced Computer Networks - 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
DevOps and Secure Deployment - 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 - StrategyBeginnerNew
Toil Audit + Automation Sprint for a Platform Team
Week 1-2: every team member logs every toil instance for 10 working days (timestamp, category, duration). Categorize using the Google SRE toil taxonomy (manual, repetitive, auto…
- Toil Reduction
- Automation
- Reliability Engineering
Site Reliability Engineering - DesignIntermediateNew
Wi-Fi 6E Site Survey + Capacity Plan for a Hospital
Import floor plans for 4 buildings (around 38,000 m2 total) into Ekahau or equivalent. Run a predictive survey targeting -65 dBm RSSI in patient rooms + -60 dBm in operating the…
- Wifi 6e
- Rf Planning
- Site Survey
Wireless and Mobile Networks - DesignIntermediateNew
Drift-Detect + Self-Heal a Multi-Tenant Kubernetes Estate
Enable ArgoCD auto-sync with selfHeal + prune across all 28 clusters. Add Kyverno cluster policies enforcing baseline standards (registry, resource limits, network policy). Buil…
- Argocd
- Kyverno
- Drift Detection
GitOps and Continuous Delivery - AnalysisBeginnerNew
Cellular IoT NB-IoT vs LTE-M Choice for Smart Metering
Define 6 evaluation axes: indoor / basement coverage (MCL / Maximum Coupling Loss target), battery life (15-year), data cadence (1 message every 4 hours), mobility (static), MNO…
- Nb Iot
- Lte M
- Cellular Iot
Wireless and Mobile Networks - DesignBeginnerNew
Design a Golden-Path Service Template for a Series-D Scale-Up
Design a golden-path template producing a Go (or Node) microservice with: REST + gRPC scaffolding, structured logging (slog or pino), OpenTelemetry tracing, Prometheus metrics, …
- Platform Engineering
- Golden Paths
- Backstage
Platform Engineering - AnalysisIntermediateNew
TCP Congestion Control Comparison on a Long-Fat Network
Set up two Linux test hosts in Sydney + Frankfurt cloud regions (or one host pair with tc-netem emulating 280ms RTT). Run iperf3 transfers using CUBIC and BBR at 4 loss rates (0…
- Tcp Ip
- Congestion Control
- Performance Testing
Computer Networks - CodeIntermediateNew
Deploy SDN-Based Network Slicing for a Telco Operator
Receive the current transport architecture (P4-programmable switches, ONOS controller cluster), the 3 customer-class SLAs (consumer: best-effort 50 Mbps; enterprise IoT: 5 Mbps …
- Sdn
- Onos
- Mininet
Advanced Computer Networks - AnalysisIntermediateNew
Cost-Optimize a Misshapen Kubernetes Cluster
Receive 30 days of cluster metrics (Prometheus + AWS Cost Explorer exports), Helm releases, and PodDisruptionBudgets per namespace. Profile: identify the top 3 cost drivers (lik…
- Kubernetes
- Cost Optimization
- AWS
Cloud Computing
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.