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
- CodeBeginnerNew
Containerize a Legacy Java Monolith and Deploy to ECS
Receive the Java 8 monolith source (around 320k lines), the current Tomcat + Apache HTTPD config, and 30 days of production traffic logs. Containerize the application (multi-sta…
- Containerization
- Docker
- AWS
Cloud Computing - CodeIntermediateNew
Build a Self-Service Internal Developer Platform on Backstage
Stand up a Backstage instance (Docker-Compose for local, EKS for prototype hosting). Build 3 software templates: (1) New Go microservice (repo + CI + ECS service + Terraform + b…
- Internal Developer Platform
- Backstage
- Terraform
Cloud Computing - CodeBeginnerNew
Bootstrap a Production-Grade CI/CD Pipeline for a Pre-Seed Startup
Audit the current deploy process and document the 6-point checklist of risk it removes. Build the pipeline in GitHub Actions: (1) PR check workflow, (2) main-branch build with m…
- Ci Cd
- Github Actions
- Container Signing
DevOps and Secure Deployment - DesignIntermediateNew
Design a Secure Wi-Fi Onboarding Flow for IoT Devices
Design a BLE-based onboarding protocol: device advertises a service UUID on power-on, the companion app discovers, performs an ECDH key exchange, then encrypts and sends Wi-Fi S…
- Link Layer Protocols
- Ble
- Secure Onboarding
Computer Networks 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
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 - DesignBeginnerNew
Design a Production HTTP/2 Load Balancer Configuration
Design a multi-region topology: anycast edge -> regional Envoy clusters -> origin services. Specify HTTP/2 connection pooling (max connections per upstream, idle timeout), retry…
- Application Protocols
- Load Balancing
- Envoy
Computer Networks - AnalysisIntermediateNew
Capacity Planning Model for a Black-Friday Traffic Surge
Pull 18 months of per-service request rate + utilization from Prometheus. Forecast BFCM traffic per service using a baseline + multiplicative seasonal model (Prophet or statsmod…
- Capacity Planning
- Forecasting
- Autoscaling
Site Reliability Engineering - 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 - Browse challenges
Explore role
Product Manager
Ship product that solves real user problems. Combine user research, prototyping, and stakeholder alignment to turn ambiguous briefs into measurable wins — the role at the centre of modern software teams.
- 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 - 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
Build a Reliable Transport Layer Over UDP
Implement in Go: connection establishment (3-way handshake), sequenced and acknowledged data segments, retransmission timer with exponential backoff, fast retransmit on triple d…
- Tcp Ip
- Reliable Transport
- Udp
Computer Networks - CodeIntermediateNew
Canary Deployments via Mesh Traffic Splitting for a Streaming Platform
Set up Flagger with Istio as the traffic provider. Define a canary policy for the playback-API service: 5 percent → 25 percent → 50 percent → 100 percent with 5-minute bake at e…
- Istio
- Flagger
- Canary Deployment
Service Mesh and Microservices Networking Build a verifiable portfolio.
Submissions become evidence. Reviewers with shipping experience score against a rubric; the result becomes a credential anyone can verify.
Why Ewance
- StrategyIntermediateNew
Design a Multi-Region Blue/Green Database Deployment for an EdTech Platform
Design the migration: source PostgreSQL 14 (primary in São Paulo) to target PostgreSQL 16 (primary in Mexico City, replica in Bogotá). Use logical replication for zero-downtime …
- Blue Green Deployment
- Logical Replication
- Postgresql
DevOps and Secure Deployment - CodeBeginnerNew
Implement Progressive Delivery with Flagger for an E-Commerce Backend
Install Flagger (or Argo Rollouts) into the existing Kubernetes + Istio stack. Configure canary analysis using Prometheus metrics: request-success-rate, request-duration p99, an…
- Flagger
- Argo Rollouts
- Canary Deployment
GitOps and Continuous Delivery - CodeIntermediateNew
Roll Out mTLS Across 80 Microservices with Istio
Install Istio (current LTS) in ambient mode where possible, sidecar mode where ambient is not yet supported by the service. Phase 1: enable PERMISSIVE mTLS namespace by namespac…
- Istio
- Mtls
- Kubernetes
Service Mesh and Microservices Networking - PresentationIntermediateNew
Run a Platform-as-Product Quarterly Review for a 40-Squad Org
Define the platform's 8 products (CI service, golden-path templates, observability stack, secret management, namespace provisioning, on-call tooling, internal portal, paved-road…
- Platform Engineering
- Platform As Product
- Facilitation
Platform Engineering - CodeIntermediateNew
Design a Multi-Tenant Kubernetes Namespace-Provisioning Self-Service
Design and build a Backstage scaffolder that lets a squad request a namespace (specifying environment, owners, expected scale). The scaffolder generates a pull request to a GitO…
- Platform Engineering
- Kubernetes
- Self Service
Platform Engineering - CodeBeginnerNew
Structured Logging Migration for a Healthcare SaaS Monolith
Receive the current Lograge-flavored Rails logger and 3 sample log files (anonymized PHI). Design: a structured-log JSON schema (request_id, user_id, route, status, duration_ms,…
- Structured Logging
- Loki
- Phi Redaction
Software Observability - DesignSeniorNew
Re-Architect a Data-Center Fabric for an AI-Training Workload
Receive the current 3-tier topology diagram, traffic captures from the existing fabric (4 weeks of sFlow), and the rack-level requirements for the 4 new H100 racks (200 Gbps per…
- Data Center Networking
- Bgp
- Evpn Vxlan
Advanced Computer Networks - CodeIntermediateNew
Build an Internal Developer Portal with Backstage for a FinTech
Deploy Backstage on the fintech's existing Kubernetes platform. Build catalog-info.yaml generators that crawl their GitHub orgs (300+ repos) and Jira (ownership tags) to seed th…
- Backstage
- Platform Engineering
- Service Catalog
Platform Engineering - DesignIntermediateNew
Build a Multi-Tenant SaaS Foundation on Kubernetes
Design the multi-tenant model: namespace-per-tenant for compute isolation, per-tenant Postgres schemas inside a shared RDS instance for data, per-tenant S3 prefixes with bucket …
- Kubernetes
- Multi Tenancy
- AWS
Cloud Computing - AnalysisBeginnerNew
Define SLOs and Error Budgets for a Real-Time Trading API
Pull 90 days of API latency + error data per endpoint from Prometheus (anonymized exports provided). Propose Service Level Indicators (SLIs) for 3 services × 2 SLI types (availa…
- Slo Definition
- Error Budgets
- Sli Design
Site Reliability Engineering - CodeIntermediateNew
Secure a LoRaWAN Sensor Network for Cold-Chain Logistics
Read the LoRaWAN 1.0.x vs 1.1 spec (the network runs 1.0.3). Design the new key management: device-unique AppKey + NwkSKey, rotation every 90 days for the warehouse devices (the…
- Lorawan
- Wireless Security
- Key Management
Wireless and Mobile Networks - PresentationBeginnerNew
Run an Incident-Response Tabletop for a Healthtech On-Call Team
Design 3 tabletop scenarios with realistic timeline injects (every 5-10 minutes, new info arrives). Run the tabletop hybrid (in-person + remote) with the 8 on-call engineers + 2…
- Incident Response
- Tabletop Exercises
- Incident Command System
Site Reliability Engineering
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.