Data Sciences Challenges
Explore data science challenges on Ewance to build skills employers expect from analysts and ML engineers. Work through challenges on data cleaning, exploratory analysis, modeling, and storytelling with data.
Most Popular
- AnalysisIntermediateNew
Due Diligence for a Seoul D2C Cosmetics Brand
Perform commercial due diligence: analyze customer cohorts, CAC, LTV, churn, and retention. Evaluate the brand's competitive moat (ingredients, sustainability, influencer networ…
- Commercial Due Diligence
- Customer Analytics
- Unit Economics
Private Equity - AnalysisExpertNew
Process Mining for Order-to-Cash in a Mid-Size Manufacturing Firm
Your task is to analyze the provided event log using process mining software (e.g., Disco, Celonis, or ProM). Discover the as-is process model, identify bottlenecks, rework loop…
- Process Mining
- Event Log Analysis
- Bpmn Modeling
Business Process Management - DesignAdvancedNew
Supplier Contract Design for a 40-Person SaaS Scale-Up
As a procurement specialist, you must draft a contract for a cloud infrastructure provider (e.g., AWS, Azure, or GCP) that includes pricing tiers, SLAs for uptime and support, d…
- Contract Design
- Negotiation
- Sla Definition
Procurement and Strategic Sourcing - StrategyAdvancedNew
Revitalizing a Legacy B2B SaaS Product
Your task is to create a comprehensive product revitalization plan. You must conduct at least 5 user interviews (or synthesize existing feedback), analyze product analytics (pro…
- User Research
- Product Analytics
- Roadmapping
Product Management 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
- ResearchIntermediateNew
Optimizing Onboarding for a Fintech App
Your task is to analyze the current onboarding flow, identify drop-off points, and propose a redesigned onboarding experience. You will use user behavior data (provided in a sim…
- User Research
- Ux Design
- Data Analysis
Product Management - StrategyAdvancedNew
Industry 4.0 Roadmap for a 40-Person SaaS Scale-Up
Your challenge is to create a 12-month Industry 4.0 roadmap for DataFlow Analytics' internal operations. You need to identify key processes to digitize (e.g., server monitoring,…
- Industry 4 0
- Cyber Physical Systems
- Iot
Production and Manufacturing Management - CodeBeginnerNew
Optimizing Inventory for a Barcelona D2C Cosmetics Brand
You are given a CSV file with 6 months of daily sales data for 20 SKUs, including product name, date, units sold, and current stock level. Your task is to write a Python program…
- Python
- Data Cleaning
- Data Analysis
Programming for Business Applications - CodeIntermediateNew
Building a Customer Segmentation Tool for a SaaS Scale-up
You are provided with a JSON file containing user data: user_id, total_logins, days_since_last_login, features_used (count), subscription_tier (free/basic/premium). Your task is…
- Python
- Pandas
- Scikit Learn
Programming for Business Applications - 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.
- CodeAdvancedNew
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
- Pandas
- Simulation
Programming for Business Applications - AnalysisIntermediateNew
Reducing Defect Rate in Stockholm D2C Cosmetics Production
Your task is to collect and analyze production data (provided in a simulated dataset) to identify root causes of defects. Use control charts (X-bar and R) and process capability…
- Statistical Process Control
- Process Capability Analysis
- Root Cause Analysis
Quality and Productivity Management - StrategyExpertNew
Designing a Six Sigma Project for a Renewable Energy Manufacturer
You are given historical warranty data and production process maps. Your task is to create a comprehensive Six Sigma project charter including a problem statement, goal statemen…
- Six Sigma
- Dmaic
- Measurement System Analysis
Quality and Productivity Management - AnalysisBeginnerNew
Sales Force Restructuring for Regional Retail Chain
Your task is to produce a sales force restructuring plan for GreenMart. Deliverables include: (1) an analysis of current sales force performance (using provided sales data), (2)…
- Sales Force Analysis
- Incentive Design
- Training Program Design
Sales Management 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
- AnalysisAdvancedNew
Capacity Planning for a 40-Person SaaS Scale-Up
Your task is to forecast ticket volumes using historical data (provided), determine the required number of support agents, and propose a staffing plan including shift schedules …
- Capacity Planning
- Forecasting
- Workforce Management
Service Operations Management - StrategyExpertNew
Service Quality Improvement for a Regional Hospital Chain
Your task is to conduct a gap analysis using SERVQUAL dimensions (reliability, responsiveness, assurance, empathy, tangibles) based on patient survey data (provided). Identify t…
- Service Quality
- Servqual
- Process Improvement
Service Operations Management - DesignIntermediateNew
Smart Service Design for Urban Mobility
You are a service designer at EcoRide. Your task is to design a smart subscription service called 'EcoRide+'. Define the service concept, key features, data sources, and revenue…
- Service Design
- Customer Journey Mapping
- Service Blueprint
Smart Services and Digital Products - AnalysisBeginnerNew
Customer Experience Analysis for a D2C Cosmetics Brand
You are a customer experience analyst at BrilhoBeleza. Your task is to analyze the current customer journey from awareness to repeat purchase. Use web analytics, user session re…
- Customer Journey Mapping
- Data Analysis
- Ux Research
Smart Services and Digital Products - AnalysisIntermediateNew
Impact Measurement for a San Francisco D2C Cosmetics Brand
Your task is to develop a comprehensive impact measurement framework for GlowRoot. You will identify relevant metrics (e.g., carbon footprint reduction, trees planted, customer …
- Impact Measurement
- Social Return On Investment
- Data Analysis
Social Entrepreneurship and Impact - AnalysisIntermediateNew
Optimizing TikTok Ad Creative for a D2C Cosmetics Brand
You are a marketing analyst at GlowUp. Using the TikTok Ads Library API and web scraping, collect data on at least 50 ad creatives (video thumbnails, captions, CTAs, and perform…
- Web Scraping
- Content Analysis
- Data Visualization
Social Media and Web Analytics - AnalysisAdvancedNew
Network Analysis for Influencer Marketing Campaign
You are a social media analyst at TaskFlow. Using the Twitter API, collect data on at least 200 accounts related to project management and tech leadership (e.g., tweets, followe…
- Network Analysis
- Twitter Api
- Influencer Identification
Social Media and Web Analytics - CodeIntermediateNew
Sentiment Analysis of Product Launch on Reddit
You are a social media analyst at EcoWear. Using Reddit's API, collect all posts and comments from r/sustainablefashion, r/sneakers, and r/environment for one week before and af…
- Web Scraping
- Sentiment Analysis
- Topic Modeling
Social Media and Web Analytics - AnalysisExpertNew
Social Listening for a B2B SaaS Brand Reputation
Your task is to perform a social listening analysis for CloudSync over the past 3 months. Constraints: use only free or trial versions of tools (e.g., Brandwatch, Talkwalker, or…
- Social Listening
- Sentiment Analysis
- Reputation Management
Social Media Marketing - CodeIntermediateNew
Optimizing Inventory for a Milan D2C Cosmetics Brand
You are provided with 12 months of daily sales data for 10 SKUs, including unit price, cost, lead time, and current inventory. Your task is to develop an Excel-based inventory o…
- Excel Modeling
- Vba Programming
- Demand Forecasting
Spreadsheet Modeling and VBA - AnalysisAdvancedNew
Sales Forecasting for a SaaS Scale-Up Moving Upmarket
You are given historical MRR data, enterprise pipeline data (deal size, stage, probability), and churn rates. Your task is to build a dynamic Excel model that forecasts MRR usin…
- Excel Modeling
- Vba Programming
- Monte Carlo Simulation
Spreadsheet Modeling and VBA - DesignIntermediateNew
Pricing Optimization for a Sustainable Fashion Brand
You are provided with historical sales data for similar products, including price, quantity sold, and cost. For each new product, you have estimated demand curves (linear or con…
- Excel Modeling
- Vba Programming
- Optimization
Spreadsheet Modeling and VBA
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.