Analysis Challenges
Diagnose, segment, model — turn a real situation into a sharp recommendation.
- AnalysisBeginnerNew
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 - 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 - AnalysisIntermediateNew
Tune Concurrency Control on a Multi-Tenant OLTP Database
Capture 6 hours of pg_locks + pg_stat_activity snapshots during peak. Identify the top 8 contention hotspots and classify each (row-level conflict, deadlock cycles, FOR UPDATE p…
- Concurrency Control
- Lock Contention
- Postgresql Or Mysql
Advanced Database Systems - 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 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
- AnalysisIntermediateNew
TCP Congestion Control Comparison on a Long-Fat Network
Set up two Linux test hosts in Sydney + Frankfurt cloud regions (or one host pair with tc-netem emulating 280ms RTT). Run iperf3 transfers using CUBIC and BBR at 4 loss rates (0…
- Tcp Ip
- Congestion Control
- Performance Testing
Computer Networks - AnalysisBeginnerNew
Valuing a Johannesburg D2C Cosmetics Startup
Conduct a valuation of GlowUp using the Venture Capital Method, Scorecard Method, and a comparable transactions analysis. Assume a target return of 10x and a 70% probability of …
- Startup Valuation
- Term Sheet Analysis
- Three Statement Modeling
Venture Capital and Entrepreneurial Finance - AnalysisFoundationalNew
Pricing Strategy for a Sustainable Fashion Brand
You are a pricing analyst at EcoWear. Using the survey data (simulated with 500 responses) and competitor prices, perform a conjoint analysis or price elasticity analysis. Deter…
- Data Analysis
- Statistics
- Data Visualization
Data Analytics for Business - AnalysisSeniorNew
Real Options Analysis for Ørsted Offshore Wind Expansion
Construct a base-case DCF for a 1.1 GW US offshore wind project using public assumptions on capex/MW, capacity factor, and PPA pricing. Then layer a real options framework: mode…
- Real Options
- Monte Carlo Simulation
- DCF Modeling
Advanced Corporate Finance - Browse challenges
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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.
- AnalysisSeniorNew
Brain-Tumor MRI Segmentation Bake-Off
You receive a curated public multi-modal MRI brain-tumor cohort (~600 patients, T1/T1c/T2/FLAIR with whole-tumor / tumor-core / enhancing-tumor masks). Train all three architect…
- Medical Imaging
- Segmentation
- Neural Networks
Machine Learning for Imaging and Medical Image Analysis - AnalysisIntermediateNew
GPU Roofline Model Study for a Computer Vision Inference Workload
Construct empirical roofline plots for the current GPU (A100-class) and next-gen GPU (H100-class) using vendor-published peak FLOPs and measured peak memory bandwidth. Profile t…
- Gpu Architecture
- Roofline Model
- Performance Modeling
Advanced Computer Architecture - AnalysisSeniorNew
Founder Behavior Diagnostic for a Burnt-Out SaaS CEO
Conduct a structured diagnostic of the founder's behavioral patterns, decision-making, and team dynamics, then produce a 90-day intervention plan. You must ground your analysis …
- Founder Psychology
- Behavioral Diagnostics
- Executive Coaching
Advanced Entrepreneurship and Founders' Skills - 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 Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
- AnalysisSeniorNew
Optimizing Renewable Energy Project Finance Model
You are a financial analyst at a renewable energy consultancy. SunPower Iberia has provided detailed cost estimates, PPA terms (20-year fixed price), and local tax incentives. Y…
- Project Finance
- Debt Scheduling
- Irr Npv
Financial Modeling - AnalysisBeginnerNew
Pricing Strategy for a Dublin D2C Cosmetics Startup
You are a pricing analyst for Glow Dublin. Using provided sales data, cost breakdowns, and competitor prices, estimate the price elasticity of demand for the serum. Then, recomm…
- Demand Elasticity
- Cost Analysis
- Pricing Strategy & Elasticity
Microeconomics - AnalysisIntermediateNew
Causal Impact of Ad Campaign for Sustainable Fashion Brand
You are given weekly sales data for EcoWear and a competitor (control) for 2022-2023. The campaign started in week 10 of 2023. Your task is to implement a DiD model, test the pa…
- Difference In Differences
- Causal Inference
- Time Series Basics
Econometrics - AnalysisBeginnerNew
Analyze a Learning-Analytics Dataset for At-Risk Detection
You receive an anonymized dataset of LMS engagement features (logins, assignment submissions, forum posts, video-watch time), grade history, and a binary label for end-of-semest…
- Learning Analytics
- Classification
- Fairness Metrics
AI in Education and Learning Analytics - AnalysisBeginnerNew
Profile and Optimize a Virtual-Memory-Heavy Image Pipeline
Receive the Go pipeline source, a representative batch (1,200 photos averaging 12MB each, with 30 outliers over 80MB), and host specs (4-core, 16GB RAM, Linux kernel 5.15). Run …
- Virtual Memory
- Performance Profiling
- Memory Hierarchy
Computer Systems and Organization - AnalysisIntermediateNew
Decarbonizing a 40-Person SaaS Scale-Up's Supply Chain
As a carbon management analyst, you must quantify CloudSync's current carbon footprint (Scope 1, 2, 3), identify reduction levers, and propose a roadmap to carbon neutrality. Co…
- Carbon Footprinting
- Scope 3 Emissions
- Renewable Energy
Circular Economy and Sustainable Operations - AnalysisIntermediateNew
Technical-Debt Quantification for an Acquired SaaS
Run a static-analysis sweep (SonarQube + custom dependency scripts) and a 4-hour structured walkthrough with the acquired team's 3 senior engineers. Categorize debt into: code-q…
- Technical Debt
- Code Analysis
- Estimation
Software Evolution and Maintenance - AnalysisIntermediateNew
Application Portfolio Rationalization at a Global Bank
Receive a CMDB extract of 412 applications with cost, technology stack, business owner, and usage telemetry (anonymized). Score each application on business value (revenue contr…
- Portfolio Rationalization
- It Governance
- Cost Analysis
IT Management and Governance - AnalysisIntermediateNew
Capacity Planning Model for a Black-Friday Traffic Surge
Pull 18 months of per-service request rate + utilization from Prometheus. Forecast BFCM traffic per service using a baseline + multiplicative seasonal model (Prophet or statsmod…
- Capacity Planning
- Forecasting
- Autoscaling
Site Reliability Engineering - AnalysisSeniorNew
Carbon Tax Impact on a Spanish Solar Farm
Calculate the current LCOE for the solar farm (including subsidies) and compare it to a representative gas plant. Then, model the effect of the carbon tax on both technologies, …
- Carbon Tax
- Lcoe Modeling
- Energy Markets
Public Economics and Policy - AnalysisBeginnerNew
Diagnose Query Failures in an E-Commerce Search Box
You receive 6 months of anonymized query logs (~480 million rows): query string, language hint, results-shown count, top-3 product clicks, and add-to-cart events. Build a notebo…
- Query Log Analysis
- Clustering
- Ir Failure Analysis
Information Retrieval and Search - AnalysisBeginnerNew
Revenue Recognition Audit for a Stockholm SaaS Scale-up
You will receive three anonymized but realistic SaaS contract templates (a 3-year enterprise deal with implementation, a usage-based contract with tiered pricing, and a contract…
- IFRS 15
- Revenue Recognition
- Contract Analysis
Advanced Financial Accounting & IFRS
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