Transversal
Communication & Storytelling Challenges
Communication & Storytelling challenges put you to work making complex ideas land with the people who need them. You'll develop skills in Written Communication, Plain Language Writing, and Presentation Structure, sharpen Public Speaking, and turn numbers into meaning through Data Storytelling.
From there you'll handle the harder edges — Pyramid Principle storytelling, Executive briefing, Board-level communication, Crisis Communication, and Cross-cultural communication — writing Narrative memos and 6-Pagers the way high-trust teams actually do. Each challenge you solve earns a verified credential you can share with recruiters.
- StrategySeniorNew
International Expansion Strategy for a Fintech Startup
You are a strategy team of 3. Analyze three target markets (Indonesia, Vietnam, Philippines) using macroeconomic data, regulatory barriers, and competitive landscape. Recommend …
- Market Entry Strategy
- Macroeconomic Analysis
- Regulatory Analysis
International Economics - AnalysisBeginnerNew
Model a City Bike-Share Network as a Graph for Rebalancing
Build a directed weighted graph with stations as nodes and edges as aggregated trip volume over rolling windows. Compute (a) betweenness centrality to find high-traffic stations…
- Graphs
- Networkx
- Shortest Path
Data Structures - StrategyBeginnerNew
Scenario Planning for a London D2C Cosmetics Brand
You are a strategic foresight consultant hired by GlowLondon. Using the 2x2 matrix method, identify two critical uncertainties (e.g., regulatory stringency vs. consumer trust) a…
- Scenario Planning
- Uncertainty Analysis
- Strategic Thinking
Strategic Foresight and Decision-Making - StrategyBeginnerNew
Pick a Forecasting Stack for an Edtech Engagement Team
You will produce a 6-page strategy memo evaluating three paths: (1) in-house forecasting team (2 engineers), (2) open-source stack (statsforecast + neuralforecast), (3) forecast…
- Ai Workforce Strategy
- Build Vs Buy Analysis
- Vendor Evaluation
Time Series Analysis and Forecasting Practice your coursework on real scenarios.
Every challenge is shaped from real industry context — not generic exercises. The work mirrors what your degree prepares you for.
Why Ewance
- CodeFoundationalNew
Replace a Naive List with a Heap in a Delivery Dispatcher
Read the current dispatcher source (around 400 lines of Python). Identify the linear scan and the operations that touch it (insert, decrease-key on a re-scored courier, extract-…
- Heap Data Structure
- Complexity Analysis
- Python Or Javascript
Data Structures - CodeBeginnerNew
Build a Crawler-and-Topic Pipeline for Public-Sector Web Analytics
You will build a polite, robots.txt-respecting crawler that ingests about 30,000 new posts/week across the 80 forums into a normalized dataset. Apply a topic model (BERTopic, wi…
- Web Crawling
- Topic Modeling
- NLP Pipeline
Social Network Analysis and Web Science - AnalysisBeginnerNew
Spectral-Analyze Wearable Sleep Data for a Healthtech Pilot
You receive 30 nights of wearable data per 25 volunteers, with polysomnography-derived ground-truth stages (Wake / NREM / REM). Engineer spectral features (delta, theta, alpha, …
- Spectral Analysis
- Feature Engineering
- Wavelet Analysis
Time Series Analysis and Forecasting - AnalysisBeginnerNew
Model Diffusion of a Hashtag Across a Music-Discovery Platform
You receive 30 days of hashtag-usage data (about 2.4 million events) with account metadata and the follow graph between active hashtag users. Fit an information-diffusion model …
- Diffusion Models
- Network Analysis
- Causal Attribution
Social Network Analysis and Web Science - 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.
- CodeBeginnerNew
Reason about Drone Mission Plans with Probabilistic Logic
Build a small Bayesian network (around 12 nodes) capturing weather, no-fly-zone proximity, battery state, operator certification, and mission risk. Implement exact inference (va…
- Bayesian Networks
- Probabilistic Inference
- Knowledge Representation
Introduction to Artificial Intelligence - AnalysisBeginnerNew
Build a Public Open-Data Dashboard for Urban Mobility
Pull the city's open-data cyclist-collision dataset (10 years of incidents, geocoded). Define a clear before/after window around the protected-lane rollout, control for traffic-…
- Exploratory Data Analysis
- Data Wrangling
- Geospatial Analysis
Applied Data Analysis and Practical Data Science - DesignBeginnerNew
Draft a Model Card for a Generative Image Product
You receive the model's training-data summary, evaluation metrics, intended-use statement, and known failure modes from the ML team. Write: (a) a 3-page plain-language model car…
- Model Cards
- Transparency Documentation
- Responsible Ai
AI Ethics, Fairness, and Responsible AI - AnalysisBeginnerNew
Fraud Risk Assessment at a Fast-Growing Jakarta Fintech
Working in a team of 3-4, build a fraud risk register covering at least eight fraud risks across revenue recognition, expected credit loss estimation, management override, and r…
- Fraud Risk Assessment
- Analytical Procedures
- Data Analytics
Auditing and Assurance 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
- 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 - StrategyBeginnerNew
Open Innovation for a Seoul D2C Cosmetics Brand
You are a junior innovation consultant hired by GlowUp Naturals. Your task is to propose a 6-month open innovation pilot program. Deliverables include: (1) a partner scouting re…
- Open Innovation
- Partner Scouting
- Ip Management
Innovation Management - CodeIntermediateNew
Designing a Dynamic Pricing Engine for a Ride-Hailing Startup
Your team is given a dataset of historical rides (timestamp, pickup location zone, demand level, available drivers). You must design a pricing algorithm that: (1) uses a multipl…
- Python Or Javascript
- Pandas
- Simulation
Programming for Business Applications - ResearchIntermediateNew
Build a Generalization-Bound Tutorial for an MLE Onboarding Track
You will produce a Jupyter-notebook tutorial covering (1) sample-complexity intuition, (2) VC-dimension with worked examples for halfspaces and decision stumps, (3) Rademacher c…
- Statistical Learning Theory
- VC Dimension
- Rademacher Complexity
Statistical Machine Learning - PresentationBeginnerNew
Storytelling Visualization of an Autonomous Vehicle Test Campaign
You receive aggregated test results: 12,000 test runs across dry, wet, and snow conditions, with metrics for disengagement rate, near-miss count, and route-completion percentage…
- Data Storytelling
- Audience Adaptation
- Chart Design
Data Visualization - StrategyIntermediateNew
Brand Crisis Simulation for a Fast-Food Chain
You are the brand crisis team at QuickBite. Within 48 hours of the video's release, you must draft a public statement, an internal memo, and a 30-day crisis management plan. The…
- Crisis Communication
- Stakeholder Management
- Brand Equity
Brand Management - AnalysisBeginnerNew
Map Creator Communities for a Short-Form Video Platform
You receive a 90-day sample of about 4 million creator-creator interactions (duets, mentions, audience overlap) and creator metadata (region, language, content tag). Build a cre…
- Network Analysis
- Community Detection
- Graph Visualization
Social Network Analysis and Web Science - DesignIntermediateNew
Cultural Integration After a Cross-Border Merger
Your team must design a 3-month cultural integration program for the merged entity. Constraints: budget of €50,000, must involve both French and Indian employees at all levels, …
- Cross Cultural Communication
- Merger Integration
- Cohort Program Design
Diversity and Inclusion Management - StrategyIntermediateNew
Charting the Course: Ewance's Strategic Entry into the European Higher-Ed Market
Ewance has established a strong presence in its home market, but the leadership team believes significant untapped potential exists across Europe. The goal of this challenge is …
- Market Analysis
- Business Strategy
- Three Statement Modeling
Open coursework - ResearchIntermediateNew
Audit Recommender Filter Bubbles for a Civic Forum
You receive 90 days of impression logs (about 30 million recommendation events) tagged with content viewpoint labels (left-leaning, center, right-leaning, non-political) from an…
- Recommender Evaluation
- Diversity Metrics
- Audit Methodology
Social Network Analysis and Web Science - StrategyIntermediateNew
Crisis Communication for a SaaS Scale-Up After a Data Breach
Your team must produce a crisis communication plan including: a stakeholder map, key messages for customers/employees/investors, a 2-minute CEO apology video script, an internal…
- Crisis Communication
- Stakeholder Management
- Executive Presence
Leadership Communication - AnalysisBeginnerNew
Valuing a Paris D2C Cosmetics Scale-Up
Your task is to produce a 10-year DCF valuation of Lueur & Croissance, including a terminal value using the perpetuity growth method. You must also select 3-5 comparable public …
- DCF Valuation
- Comparable Company Analysis
- Three Statement Modeling
Corporate Finance (MBA)
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.
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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.