Beginner Challenges
Real-world scenarios at the beginner level. Earn verified credentials as you practice the work your degree prepares you for.
- CodeBeginnerNew
Design an Effort-Aware Bike Routing Feature for Lisbon
Working only from the provided materials — the Lisbon street-graph edges (lisbon-bike-graph), the matching node coordinates and elevations (lisbon-graph-nodes), the 50 origin-de…
- Graph Algorithms
- Dijkstra
- Algorithm Analysis
Open coursework - StrategyBeginnerNew
Revitalizing a Legacy Retailer's Digital Strategy
Your task is to conduct an industry analysis using Porter's Five Forces, assess the company's internal resources via a VRIO framework, and develop a strategic recommendation for…
- Industry Analysis
- Competitive Strategy
- Digital Transformation
Open coursework - CodeBeginnerNew
Optimize Wind-Turbine Layout with a Genetic Algorithm
You receive a wind-speed-and-direction time series for the lease area, the polygon boundary, a minimum inter-turbine spacing constraint, and a Jensen wake model. Implement a rea…
- Genetic Algorithms
- Metaheuristics
- Constraint Handling
Open coursework - CodeBeginnerNew
Build an Interactive Carbon-Emissions Explorer for a Climate Nonprofit
You receive 20 years of harmonized European industrial emissions data (around 800,000 rows: country, sector, sub-sector, year, emissions in tons CO2e). Design and build an inter…
- Interactive Visualization
- D3
- Observable
Data Visualization 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
- CodeBeginnerNew
Build a CPU-Only Teaching Rasterizer in C++
Using the provided test-scene model file and the reference render image, implement a software rasterizer in C++ that runs only on the central processor. Build the supporting mat…
- Rasterization
- Geometric Transformations
- 3d Rendering
Open coursework - CodeBeginnerNew
Build a Hybrid Search for an Enterprise RAG Knowledge Base
You receive 50,000 internal documents (anonymized policy memos, regulation excerpts, internal FAQs) plus a 300-query benchmark with binary relevance labels for the top-10 return…
- Hybrid Search
- Bm25
- Dense Retrieval
Open coursework - AnalysisBeginnerNew
Brand Alliance Strategy for a Sustainable Fashion Startup
You are a brand strategy analyst for EcoThreads. Your task is to recommend a brand alliance partner and propose a co-branding campaign. Constraints: budget of €200k for the camp…
- Brand Alliances
- Co Branding
- Brand Equity Measurement
Open coursework - DesignBeginnerNew
Design the Architecture for a Library Management System
Read the 30-page replacement RFP. Author a 15-page architecture document covering the C4 model levels 1-3 (context, container, component) for the new system: web app, mobile app…
- Software Architecture
- C4 Model
- Data Modeling
Open coursework - 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.
- StrategyBeginnerNew
Scope a Demand-Forecasting Model with Operations Stakeholders
You receive recorded interview transcripts (or summary notes) for the three personas, plus a sample of the historical sales data. Map each stakeholder's pain to candidate ML pro…
- Stakeholder Framing
- Ml Problem Scoping
- Metric Design
Machine Learning in Practice - AnalysisBeginnerNew
Value a Johannesburg Direct-to-Consumer Skincare Startup
Using the company data room, the comparable funding-rounds dataset, and the founder's investment memo provided to you, value the company with at least two independent methods: t…
- Startup Valuation
- Term Sheet Analysis
- Financial Modeling
Open coursework - AnalysisBeginnerNew
Rate and Structure a Spanish Green Bond Issuance
Using the Aurelia Renovables financial statements dataset, calculate the core credit metrics over the three reported years: interest coverage, net-debt-to-EBITDA leverage, funds…
- Credit Analysis
- Financial Statement Analysis
- Bond Covenants
Open coursework - AnalysisBeginnerNew
Exploit and Remediate Eight Web Flaws on a FinTech Practice Range
Using the eight challenge specifications in the provided challenge specification brief and the representative Rails module in the provided vulnerable application source bundle (…
- Web Security
- OWASP Top 10
- Penetration Testing
Open coursework 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
- AnalysisBeginnerNew
Requirements Elicitation for a Sustainable Fashion Platform
Conduct stakeholder interviews (simulated via provided personas) and create a requirements specification. Include functional and non-functional requirements, user stories, accep…
- Requirements Elicitation
- User Stories
- Acceptance Criteria
Software Engineering and Quality Assurance - ResearchBeginnerNew
Curate a Domain Lexicon for a Climate-Tech NLP Stack
You receive 5,000 policy documents and a benchmark of 200 documents with manually tagged domain terms. Curate a lexicon of ~1,500 terms with (1) canonical English form, (2) Swah…
- Lexical Resources
- Named Entity Recognition
- Spacy
Open coursework - CodeBeginnerNew
Build a Booking Web App for a Boutique Hotel Group
Design the data model (properties, rooms, availability, bookings, guests). Build the Next.js app with the App Router: 4 public pages (search, results, room detail, checkout), 1 …
- Nextjs
- React
- REST API
Web Application Development - StrategyBeginnerNew
Design a GmbH Governance Framework for a São Paulo Cosmetics Startup
Working only from the materials provided, design the governance framework for the startup's planned German holding company and explain how it resolves the current founder deadlo…
- Corporate Governance
- Shareholders Agreement
- Gmbh Law
Open coursework - AnalysisBeginnerNew
Audit a Hiring-Screening Model for Demographic Bias
You receive: (a) inference API access to the production model (black-box), (b) a 12,000-resume audit benchmark with self-declared gender and age-band labels (consented, GDPR-com…
- Fairness Metrics
- Bias Auditing
- Model Evaluation
AI Ethics, Fairness, and Responsible AI - StrategyBeginnerNew
Non-Market Strategy for Boston D2C Cosmetics Brand
You are a junior strategy consultant hired by Glow Naturals. Your task is to develop a non-market strategy that includes: (1) a stakeholder mapping and engagement plan, (2) a po…
- Stakeholder Analysis
- Public Policy
- Non Market Strategy
Open coursework - StrategyBeginnerNew
Design Wealthsimple's Innovation Ecosystem Strategy
Using only the materials provided, examine Wealthsimple's current ability to innovate and decide what kind of innovation ecosystem it should build. Read the innovation audit mem…
- Ecosystem Mapping
- Open Innovation
- Corporate Venturing
Open coursework - StrategyBeginnerNew
Social Media Content Strategy for a Sustainable Cosmetics Brand
Audit the brand's current social presence (screenshots and analytics data provided). Research 3 successful competitors' social strategies. Develop: (1) Platform strategy — which…
- Digital Marketing
- Online Marketing
- Digital Business Models
Open coursework - CodeBeginnerNew
Build a Multilingual Text-Mining Dashboard for Hotel Reviews
You receive 200,000 sampled reviews across 9 languages plus an English-only labeled benchmark of 1,000 reviews for sentiment and aspect (rooms, food, staff, value, location). Bu…
- Multilingual NLP
- Sentiment Analysis
- Aspect Extraction
Linguistic Engineering and Language Technologies - AnalysisBeginnerNew
Valuation of a Vienna D2C Cosmetics Startup
You are a junior financial analyst at a boutique valuation firm. GlowVienna has provided you with historical financial data (revenue, expenses, customer counts) for the past thr…
- DCF Modeling
- Comparable Company Analysis
- Excel Modeling
Open coursework - CodeBeginnerNew
Tune a Recommender for an EU Streaming Music App
Use the public Last.fm-360k or similar dataset (anonymized listening histories) as a stand-in. Implement a baseline matrix-factorization recommender, then a hybrid that adds tra…
- Recommender Systems
- Feature Engineering
- Model Evaluation
Open coursework - AnalysisBeginnerNew
Explain a Credit-Risk Model with SHAP for a Fintech
You receive a trained XGBoost credit-risk model (binary default prediction), the training feature schema (38 features), and a held-out 10,000-sample test set with labels. Comput…
- Shap
- Interpretability
- Fairness Analysis
Explainable and Interpretable AI
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.