Intermediate Challenges
Real-world scenarios at the intermediate level. Earn verified credentials as you practice the work your degree prepares you for.
- AnalysisIntermediateNew
Exploration Strategies for a Recommendation Bandit
You receive 60 days of anonymized impression/click logs covering around 200 content items and user features (cohort, listening history bucket). Build a contextual-bandit simulat…
- Contextual Bandits
- Thompson Sampling
- Ucb
Reinforcement Learning - CodeIntermediateNew
Triage Medical-Imaging Annotations with a Small Vision Model
Train a binary normal/abnormal classifier on the public CheXpert or NIH ChestX-ray14 dataset. Use temperature scaling to calibrate the output, then define abstention thresholds …
- Image Classification
- Transfer Learning
- Calibration
Applied Machine Learning - AnalysisIntermediateNew
Randomized Load Balancer with the Power of Two Choices
Simulate four placement policies on a 24-hour anonymized connection-establishment trace (around 4.1 billion events): (1) random-1, (2) round-robin, (3) P2C with instantaneous lo…
- Power Of Two Choices
- Load Balancing
- Randomized Algorithms
Open coursework - AnalysisIntermediateNew
Optimizing Bond Portfolio for a German Pension Fund
Your task is to analyze the current bond portfolio (provided in a dataset), calculate key risk metrics (duration, convexity, yield to maturity), and recommend a new allocation t…
- Bond Valuation
- Duration Analysis
- Convexity
Open coursework 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
Design a Visual Search Backend for a Boutique Luxury Marketplace
You receive a catalog of 80,000 luxury items (image + sparse metadata) and a labeled query set of 300 user photos with hand-picked target items. Choose an embedding strategy (CL…
- Visual Search
- Embeddings
- Clip
Deep Learning for Computer Vision - DesignIntermediateNew
Design an Invoice-Rules Mini-Language for Non-Technical Users
Design a rule mini-language whose grammar (written in Backus-Naur Form, the standard notation for describing grammars) covers boolean logic (and / or / not), comparison operator…
- Abstraction
- Recursion
- Domain Specific Language
Open coursework - AnalysisIntermediateNew
Audit BLEU vs. COMET on a Multilingual Customer-Support Corpus
You receive 600 source-translation-reference triples covering 6 languages (EN as source; ES/FR/DE/JA/PT-BR/HI as targets), each scored on adequacy and fluency (1-6) by 3 profess…
- Mt Evaluation
- Neural Mt
- Statistical Analysis
Machine Translation - CodeIntermediateNew
Multi-Tenant Schema Migration for a Series-B HR SaaS
Design a 4-phase migration: (1) add new columns + tables, dual-write on every workflow mutation, (2) backfill 3.4 TB in chunks of around 50k rows per minute with throttling and …
- Multi Tenant Architecture
- Schema Migration
- Dual Write
Open coursework - 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.
- AnalysisIntermediateNew
Capital Budgeting for a Solar Farm Expansion
Your task is to build a project finance model that estimates unlevered and levered free cash flows over 25 years (the project's life). Incorporate the 30% Investment Tax Credit …
- Capital Budgeting
- Npv Irr Analysis
- Project Finance
Corporate Finance (MBA) - CodeIntermediateNew
Parse and Structure Clinical Discharge Summaries
Combine traditional NLP (section segmentation, sentence parsing) with LLM extraction (small open model + structured-output enforcement). Build the pipeline so every extracted fi…
- Structured Extraction
- Clinical NLP
- Parsing
Open coursework - AnalysisIntermediateNew
Compare Stereo Depth Methods for a Drone Inspection Startup
You receive 500 calibrated stereo pairs from a turbine inspection plus sparse LiDAR ground truth on each pair. Implement (or wrap) three depth estimators: OpenCV Semi-Global Mat…
- Stereo Depth Estimation
- Multi View Geometry
- Model Evaluation
Open coursework - CodeIntermediateNew
Add Differential Privacy to a Mental-Health App's Analytics Dashboard
Wrap the analytics module in `analytics_module.py` (provided) with a differential-privacy layer built on OpenDP. Implement epsilon-delta accounting: add Laplace noise to counts …
- Differential Privacy
- Privacy Budget
- Python Programming
Open coursework Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
- StrategyIntermediateNew
Geopolitical Strategy for a UK Fintech Expanding to the Middle East
Students will work in teams to produce a geopolitical market entry strategy for PayBridge. The strategy must include a comparative analysis of the UAE and Saudi Arabia, a risk m…
- Market Entry Strategy
- Geopolitical Risk Mitigation
- Regulatory Analysis
Open coursework - DesignIntermediateNew
International Expansion Financing for a Seoul D2C Cosmetics Brand
Your task is to analyze three financing scenarios: (1) a Korean won-denominated venture debt, (2) a USD-denominated convertible note from a US investor, and (3) a JPY-denominate…
- Capital Structure
- Cross Border Financing
- Wacc Calculation
Open coursework - DesignIntermediateNew
Voice + Visual Prototype for a Hands-Free Warehouse App
Write the voice-script branching diagram (8 happy steps + 2 exceptions) using a simple grammar: prompt → expected input → response → next state. Build the wrist-screen visual pr…
- Voice Ui
- Multimodal Design
- Figma
User Interface Design and Prototyping - AnalysisIntermediateNew
Reshoring Strategy for a German Medical Device Manufacturer
Your task is to analyze the current single-source dependency, evaluate at least two alternative sourcing regions (e.g., Czech Republic, Poland, or domestic German suppliers), an…
- Supply Chain Network Design
- Total Cost Of Ownership
- Risk Assessment
Global Supply Chain Management - 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 - AnalysisIntermediateNew
Revenue Recognition for a SaaS Scale-Up Moving to Enterprise
Your task is to analyze three sample enterprise contracts from CloudFlow, identify performance obligations, determine the transaction price (including variable consideration), a…
- Revenue Recognition
- ASC 606
- Contract Analysis
Open coursework - CodeIntermediateNew
Refactor a Tangled Order Aggregate at a Logistics Platform
Work in the provided Spring Boot 3 + Java 21 codebase. Identify the true aggregate roots (likely candidates: Order, Shipment, Invoice) and split the god object accordingly. Extr…
- Tactical Ddd
- Aggregate Design
- Java Refactoring
Open coursework - StrategyIntermediateNew
Market Entry Strategy for TaskFlow into German Manufacturing
Your team must produce a market entry strategy for TaskFlow's move into German manufacturing, working only from the materials you are given: a leadership mandate memo that state…
- Market Entry
- Competitive Strategy
- Game Theory
Open coursework - ResearchIntermediateNew
Investigate Fast-Fashion Green Claims to Reposition EcoWear
Work only from the materials provided: the EcoWear company brief, the seed claims dataset you will extend, the two competitor sustainability hubs (H&M Group and Inditex/Zara), a…
- Competitive Intelligence
- Sustainability Analysis
- Strategic Communication
Open coursework - 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
Instrument a Model Monitoring Stack from Scratch
Pick the priority product (recommend the customer-service RAG assistant, around 40k queries/day). Define monitoring signals: input drift (Evidently/NannyML), output quality (LLM…
- Model Monitoring
- Data Drift Detection
- LLM Evaluation
ML Engineering and Production ML - CodeIntermediateNew
Design Safe Navigation Behavior for a Hospital Delivery Robot
You receive a dataset of 200 anonymized hospital corridor traces (people positions over time from the robot's LIDAR) plus the current planner's parameters. Design a policy that …
- Human Aware Navigation
- Ros2
- Motion Planning
Human-Robot Interaction
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.