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
- CodeBeginnerNew
Python Data Pipeline for Spotify Listening Trends
Write a Python script (or Jupyter notebook) that reads the provided CSV files (4 weeks of Spotify Top 200 data), cleans inconsistencies (missing artists, duplicate entries, enco…
- Object Oriented Programming
- Data Analytics
- Statistics
Open coursework - AnalysisBeginnerNew
Competitive SEO Audit for a Munich Craft Beer E-Shop
Perform a technical SEO audit using free tools (Google Search Console data provided, Screaming Frog export attached). Analyze site architecture, page speed, mobile usability, me…
- Online Marketing
- Web Development
- Data Analytics
Open coursework - StrategyIntermediateNew
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 - AnalysisIntermediateNew
IT Security Risk Assessment for a FinTech Mobile App
Using the provided architecture diagram and API documentation, perform a risk assessment covering: (1) Threat modeling using STRIDE, (2) Vulnerability identification across mobi…
- It Security
- Requirements Engineering
- Web Development
Open coursework 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
- CodeIntermediateNew
Big Data Dashboard for Urban Mobility Patterns
Using the provided sample dataset (100K anonymized trip records with timestamps, origin/destination coordinates, transport mode, and duration), build a dashboard prototype. Requ…
- Data Analytics
- Digital Business Models
- Web Development
Open coursework - AnalysisIntermediateNew
E-Commerce Conversion Funnel Optimization for an Outdoor Gear Brand
Using the provided Google Analytics export and heatmap data, map the complete customer journey from landing page to purchase confirmation. Identify the top 5 friction points cau…
- E Commerce
- Data Analytics
- User Experience Design
Open coursework - DesignAdvancedNew
Cloud Architecture Design for a Multi-Tenant SaaS Platform
Deliver a comprehensive cloud architecture design covering: (1) Multi-tenancy strategy (shared database with row-level security vs. schema-per-tenant vs. database-per-tenant — j…
- Cloud Computing
- It Security
- Web Development
Open coursework - ResearchAdvancedNew
Seminar: Future of AI Visibility — How Brands Get Cited by ChatGPT
Research the emerging field of AI visibility / Generative Engine Optimization (GEO). Your deliverables: (1) Literature review covering at least 5 academic papers and 10 industry…
- Online Marketing
- Digital Innovation
- Academic Writing
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.
- CodeIntermediateNew
Full-Stack Prototype: Event Ticketing Platform with QR Validation
Build a web application using any modern stack (Next.js recommended, but React + Express, Django, or Rails are acceptable). Required features: (1) Event listing page with title,…
- Web Development
- Object Oriented Programming
- User Experience Design
Open coursework - PresentationIntermediateNew
Stakeholder ROI Presentation for Implementing a CRM System
Compare three CRM solutions (Salesforce, HubSpot, Pipedrive) for the firm's specific needs. For each: feature comparison, pricing for 15 users, implementation timeline, and trai…
- Business Administration
- Digital Business Models
- Statistics
Open coursework - AnalysisIntermediateNew
GDPR Data Mapping and Privacy Impact Assessment for an E-Learning Platform
Using the provided system architecture and feature specification, deliver: (1) Complete data map showing all personal data flows (collection → processing → storage → deletion), …
- It Security
- Requirements Engineering
- Data Analytics
Open coursework - AnalysisAdvancedNew
Redesign Transfer Pricing for a German Auto Supplier
Build a transfer pricing model for one EV component line (e.g., e-axle housing) flowing Germany → Hungary → Mexico → US OEM. Compare cost-plus, market-based, and negotiated appr…
- Transfer Pricing
- Managerial Accounting
- Tax Strategy
Advanced Management Accounting & Control 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
Auditing Bias in a Fintech Credit Scoring Model
Conduct a quantitative fairness audit using a public proxy dataset (e.g., the UCI Adult or Give Me Some Credit dataset re-framed as BNPL decisions) and apply at least three fair…
- Algorithmic Fairness
- Ai Audit
- Regulatory Analysis
AI, Ethics and Society - StrategyIntermediateNew
Responsible AI Policy for a HR-Tech Scale-up
Working as a cross-functional team, produce a Responsible AI Policy that addresses: permitted/prohibited use cases, human oversight requirements, data minimization, vendor due d…
- Ai Policy
- Ai Governance
- Stakeholder Management
AI, Ethics and Society - AnalysisAdvancedNew
Rescuing a Stalled Sprint at a Boston EdTech
Analyze the provided six-sprint dataset and interview transcripts to diagnose why sprint goals are failing. Build a quantitative view (velocity trends, scope-change rate, carryo…
- Scrum
- Retrospective Facilitation
- Data Analysis
Agile Project Management - AnalysisIntermediateNew
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 - AnalysisIntermediateNew
Liquidity Risk Management for a Regional Bank
Your task is to create a liquidity risk management plan for Heartland Bank. First, calculate the Liquidity Coverage Ratio (LCR) and Net Stable Funding Ratio (NSFR) using the ban…
- Liquidity Risk
- Lcr
- Nsfr
Banking and Financial Institutions - StrategyExpertNew
Fintech Partnership Risk Assessment for a Traditional Bank
Your task is to conduct a risk assessment for WellsTrade's potential partnership with PayFlow. Review PayFlow's business model, cybersecurity posture, regulatory compliance (e.g…
- Operational Risk
- Vendor Risk
- Cybersecurity
Banking and Financial Institutions - AnalysisAdvancedNew
Channel Partner Program for a Munich Industrial Sensor Manufacturer
Your task is to create a new channel partner program. You will analyze sales data from the past 2 years (provided in a CSV with 10,000 transactions) to identify top-performing p…
- B2b Marketing
- Channel Management
- Data Analysis
Business-to-Business Marketing - AnalysisAdvancedNew
Social Preferences in a 40-Person SaaS Scale-Up
You are an internal behavioral economist at TaskFlow. Analyze the current compensation structure (50% base, 50% individual commission) and its behavioral pitfalls. Propose a new…
- Incentive Design
- Game Theory
- Social Preferences
Behavioral Economics - ResearchExpertNew
Experimental Design for a Fintech App's Savings Nudge
You are a behavioral data scientist at SaveSmart. Design a randomized controlled trial (RCT) to test the effect of a 'future self' nudge on savings behavior. Define treatment an…
- Experimental Design
- Statistical Analysis
- Nudge Theory
Behavioral Economics - DesignIntermediateNew
Scaling a Sydney D2C Cosmetics Startup's Data Pipeline
You are tasked with designing a cloud-based data pipeline for GlowUp. The pipeline must ingest real-time user events (page views, purchases, returns) from web and mobile apps, p…
- Cloud Computing
- Apache Spark
- Nosql
Big Data and Cloud Technologies - CodeExpertNew
Real-Time Sentiment Analysis for a Sustainable Fashion Brand
You are to develop a real-time sentiment analysis system for EcoWear. Ingest data from Twitter API (hashtag #EcoWear) and a mock review API, process using Spark Streaming with M…
- Spark Streaming
- Mapreduce
- Nosql
Big Data and Cloud Technologies - StrategyIntermediateNew
Designing a Blockchain-Based Supply Chain for Organic Cotton
Your task is to propose a blockchain-based supply chain solution for GreenWeave. You need to select an appropriate blockchain (public vs. private), define data to be recorded at…
- Blockchain
- Supply Chain
- Tokenization
Blockchain and Digital Assets
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
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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.