Computer Sciences Challenges
Explore computer science challenges on Ewance to equip yourself with job-relevant skills for a variety of roles. Learn programming techniques and build technical skills with challenges on software development, algorithm design, system architecture, and more.
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- CodeIntermediateNew
Build a Saga Orchestrator for Cross-Border Payment Creation
Using the service contract specification and the failure scenario catalog provided, model the payment-creation flow as a saga with six forward steps and six compensations, and i…
- Saga Pattern
- Temporal Workflow
- Compensation Logic
Open coursework - CodeIntermediateNew
Design an Event-Sourced Inventory System for a Third-Party Warehouse
Working from the operations case file and the warehouse domain specification, design an event model of twelve to fifteen events that covers the warehouse lifecycle (receive, put…
- Event Sourcing
- Cqrs
- Eventstoredb
Open coursework - CodeIntermediateNew
Bridge a Healthcare Messaging System from RabbitMQ to Kafka
Working from the provided RabbitMQ topology specification and the 30-day message-volume dataset, map each of the 24 queues to a Kafka topic and choose a sound partition key for …
- Kafka
- Rabbitmq
- Message Broker Migration
Open coursework - DesignIntermediateNew
Design a Real-Time Fraud-Scoring Stream for a Card Issuer
Produce a design proposal for a fraud-scoring stream that ingests authorization events, maintains a 30-day rolling feature state per customer, applies a pre-trained scoring mode…
- Apache Flink
- Kafka Streams
- Stream Processing
Open coursework 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
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
Parallelize a CFD Solver with MPI Across 256 Cores
Profile the serial solver to identify the hot loops (likely: pressure-Poisson solve, advection step, BC update). Decompose the domain via 2D block-structured partitioning. Imple…
- Mpi
- Cpp Programming
- Domain Decomposition
Open coursework - CodeIntermediateNew
Port a Monte Carlo Engine to CUDA for an Asset Manager
Profile the CPU MC engine to identify the kernel candidates: path generation (Brownian motion + correlated factors), payoff evaluation, aggregation. Port to CUDA: use cuRAND for…
- Cuda
- Monte Carlo
- Gpu Programming
Open coursework - DesignIntermediateNew
Design Parallel I/O for a Climate-Simulation Data Pipeline
Analyze the current I/O pattern: each MPI rank writes its own file via serial HDF5 (the classic anti-pattern). Design a single shared file using parallel HDF5 + MPI-IO with coll…
- Mpi Io
- Parallel Hdf5
- Lustre Filesystem
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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.
- AnalysisIntermediateNew
Build a Performance Model for a Molecular-Dynamics Job
Build an analytical performance model covering: compute time per step (function of atom count + cutoff + interaction type), inter-rank communication cost (function of decomposit…
- Performance Modeling
- Gromacs
- Benchmark Design
Open coursework - DesignIntermediateNew
Design a Voice-First Picking Model for a Warehouse Tablet App
Using the partner-warehouse case file and the touch-app interaction inventory, map the current picking workflow and select the eight highest-frequency interactions to move to vo…
- Interaction Design
- Voice Ui Design
- Contextual Inquiry
Open coursework - CodeIntermediateNew
Port a Legacy C Image Pipeline from x86 to ARM64
Clone the 12k-line C codebase (provided). Set up an ARM64 cross-compile toolchain (clang or gcc). Identify portability issues: endianness assumptions, pointer-size casts, inline…
- C Programming
- Manual Memory Management
- Pointers
Imperative and Low-Level Programming - CodeIntermediateNew
Write a Linux Device Driver for a Custom Sensor Board
Read the SPI sensor datasheet (provided) and the existing user-space hack (around 600 lines of C). Write a Linux kernel module (target kernel 6.6 LTS) that registers a hwmon dev…
- C Programming
- Os Interfaces
- Kernel Development
Imperative and Low-Level Programming 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
- AnalysisIntermediateNew
Build a Risk Register for a Cross-Border Healthcare Provider
Run 8 structured interviews (CISO, IT director, clinical-systems lead, DPO, 4 clinic managers) to surface the top risk candidates. Map each risk against NIST SP 800-30 (threat s…
- Risk Management
- NIST Sp 800 30
- Security Governance
Open coursework - AnalysisIntermediateNew
Clear a Fortune-100 Privacy Review for an HR-Tech Vendor
Using the product fact-sheet, the stakeholder interview notes, the buyer's 14-concern brief, and the official texts of the General Data Protection Regulation and the EU Artifici…
- Compliance
- Privacy Regulation
- GDPR
Open coursework - ResearchIntermediateNew
Run a Go/No-Go Discovery Sprint for a Research Spin-Off
Using the founder brief, recruit 18 backend developers (6 each from fintech, business-to-business software, and developer tools) by screening the candidate pool against the qual…
- Opportunity Identification
- Customer Discovery
- Venture Building
Open coursework - CodeIntermediateNew
Automated Planner for a Field-Service Maintenance Schedule
Model the scheduling problem as either PDDL (Planning Domain Definition Language) or a constraint-satisfaction problem using a solver like OR-Tools. Define: actions (visit_site,…
- Planning
- Constraint Satisfaction
- Python Programming
Introduction to Artificial Intelligence (CS Elective) - CodeIntermediateNew
Forecasting Model for Online-Game Daily Active Users
Build forecasts at 14-day horizon per region using: (1) classical baseline — SARIMA or Prophet; (2) ML approach — gradient-boosted regressor on engineered features (day-of-week,…
- Supervised Learning
- Time Series Forecasting
- Python Programming
Machine Learning (CS Elective) - CodeIntermediateNew
Edge-Inference Pipeline for a Smart-Factory Vibration Monitor
Architect a pipeline that runs on an ESP32-S3 + STM32 combo (provided): (1) sample 3-axis accelerometer at 3.2 kHz, (2) compute windowed FFT features on-device every 1s, (3) run…
- Edge Computing
- Embedded Systems
- Sensors And Actuators
Internet of Things and Cyber-Physical Systems - DesignIntermediateNew
Wireless Sensor-Network Design for a Vineyard Microclimate Study
Spec the network: 60 LoRaWAN sensor nodes + 2 gateways (TheThingsStack indoor + outdoor gateway choice), star topology with possible relays. Node hardware: ESP32 + LoRa + sensor…
- Sensor Networks
- Embedded Systems
- Lorawan
Internet of Things and Cyber-Physical Systems - DesignIntermediateNew
Real-Time Traffic-Sensor Fusion for a Smart Intersection
Design a fusion architecture: per-modality timestamping (NTP-disciplined within 50ms), per-modality confidence weighting (modality-specific noise model), Kalman-filter or partic…
- Sensor Fusion
- Cyber Physical Systems
- Edge Computing
Open coursework - CodeIntermediateNew
VR Switching Trainer for a Copenhagen Grid Operator's Substations
Your task is to build and evaluate one bay's switching trainer end to end, using only the materials provided. Reproduce the bay described in the bay-equipment reference sheet in…
- Vr Development
- Unity
- Xr Interaction
Open coursework - CodeIntermediateNew
Offline-First Flutter App for HVAC Field Service Technicians
Build a Flutter prototype that runs against the mock API described in the Mock API Specification, seeded with the Work Orders Seed Dataset and the Asset History and Parts Catalo…
- Mobile Development
- Flutter
- Offline First Design
Open coursework - CodeIntermediateNew
Build a Clinician-Grade HealthKit Cardiac Rehab iOS App
Build a SwiftUI app targeting iPhones running iOS 17 or later that requests the four HealthKit read permissions named in the product brief (PM-1), reads the last seven days of d…
- Mobile Development
- Ios Swift
- Healthkit
Open coursework - CodeIntermediateNew
Unify a Logistics Driver App and Add Bluetooth Vehicle Telematics
Working only from the materials provided, build a React Native app (Expo bare workflow) that replaces the three legacy flows documented in the case file — optimized route view, …
- Mobile Development
- React Native
- Ble
Open coursework
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