Intermediate Challenges
Real-world scenarios at the intermediate level. Earn verified credentials as you practice the work your degree prepares you for.
- AnalysisIntermediateNew
Secure-by-Design Review of a Microservices Auth Subsystem
Read the 18-page proposed auth-service design (Next.js BFF, FastAPI auth-service, Postgres for sessions + refresh, Redis for short-lived tokens, integration with Auth0 for OIDC)…
- Secure Design
- OWASP Asvs
- Oauth2
Software Security - CodeIntermediateNew
Build a Shareable Immutable List for a Real-Time Document Editor
Using the provided API specification (persistent-list-spec) and the starter module (immutable-list-starter), implement a persistent immutable list supporting get, set, append, p…
- Data Abstraction
- Recursion
- Persistent Data Structures
Open coursework - CodeIntermediateNew
Build a Variant-Calling Pipeline for a Genomics SaaS
Stand up a Nextflow pipeline covering: read trimming, BWA-MEM alignment, duplicate marking, base-quality-score recalibration, GATK HaplotypeCaller variant calling, and variant f…
- Bioinformatics
- Variant Calling
- Workflow Orchestration
Open coursework - CodeIntermediateNew
Train a Multimodal Classifier for Medical Triage
Pick a fusion architecture (early fusion via cross-attention, late fusion via score combination, or a unified multimodal encoder like FLAVA/CoCa). Train on the 14,000 pairs with…
- Multimodal Fusion
- Cross Attention
- Pytorch
Open coursework 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
- CodeIntermediateNew
Out-of-Order Execution Microbenchmark Suite
Design and implement 6 microbenchmarks: ROB capacity probe (varying chain length), load-store queue probe, branch mispredict cost probe, ILP saturation probe, store-to-load forw…
- Out Of Order Execution
- Performance Counters
- Benchmarking
Advanced Computer Architecture - DesignIntermediateNew
Detect and Defend a Government Portal Against Application-Layer DDoS
Working only from the provided incident log sample, architecture overview, and prior-incident case file, design a layered defense and prove it holds up under simulation. Build s…
- Ddos Defense
- Detection Engineering
- Waf
Open coursework - AnalysisIntermediateNew
Architecture Evaluation via ATAM for a Healthcare Platform
Run a 2-phase ATAM (Phase 1: present architecture + elicit quality-attribute goals + analyze approaches; Phase 2: broader stakeholder validation). Capture: business drivers, qua…
- Atam
- Architecture Evaluation
- Quality Attributes
Software Architecture - CodeIntermediateNew
Map a Climate-Policy Corpus to Linked Open Data
You receive 12,000 policy PDFs and a benchmark of 200 documents with manually linked entities (places, organizations, policies). Build a pipeline that runs NER, candidate-genera…
- Entity Linking
- Linked Open Data
- Wikidata
Knowledge Graphs and Semantic Web - 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.
- DesignIntermediateNew
International Expansion Financing for a Seoul D2C Cosmetics Brand
Your task is to analyze three financing scenarios: (1) a Korean won-denominated venture debt, (2) a USD-denominated convertible note from a US investor, and (3) a JPY-denominate…
- Capital Structure
- Cross Border Financing
- Wacc Calculation
Open coursework - StrategyIntermediateNew
Redesign TaskFlow's Pricing to Win Enterprise Without Losing Small Businesses
Working only from the materials provided to you — the customer accounts and usage dataset (taskflow-accounts-usage), the current pricing and packaging brief (taskflow-pricing-br…
- Pricing Strategy
- Segmentation
- Financial Analysis
Open coursework - CodeIntermediateNew
Parallelize a CFD Solver with MPI Across 256 Cores
Profile the serial solver to identify the hot loops (likely: pressure-Poisson solve, advection step, BC update). Decompose the domain via 2D block-structured partitioning. Imple…
- Mpi
- Cpp Programming
- Domain Decomposition
Open coursework - StrategyIntermediateNew
Prospect Theory in Pricing for a 40-Person SaaS Scale-Up
You are a pricing strategist at TaskFlow. Your task is to analyze how existing PLG customers (who pay a flat fee) would perceive a move to tiered pricing. Using prospect theory,…
- Prospect Theory
- Loss Aversion
- Framing Effects
Behavioural Finance 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
- StrategyIntermediateNew
Build a Disruption-Resilient Supply Chain for SunVolt Solar
Your task is to diagnose SunVolt's current exposure and design a resilience strategy that hits two targets at once — roughly a 50% reduction in disruption probability and no mor…
- Risk Assessment
- Inventory Optimization
- Sourcing Strategy
Open coursework - CodeIntermediateNew
Fine-Tune a Small Transformer for Legal-Domain EN-DE Translation
You receive a 120,000-segment parallel EN-DE legal corpus and a held-out 1,000-segment test set with reference translations. Fine-tune a small pretrained Transformer (e.g., NLLB…
- Neural Mt
- Transformer
- Fine Tuning
Open coursework - DesignIntermediateNew
Design an Upstream Contribution to a CNCF Service-Mesh Project
Using the internal fork dossier (case-file) for the business context, the prior rejection feedback, and the targeted roadmap area, design an upstream contribution that a careful…
- Oss Contribution
- Rfc Design
- Pr Etiquette
Open coursework - StrategyIntermediateNew
Investigate FlowSync's Path from Self-Serve to Enterprise Sales
Treat this as a field investigation, not a desk opinion. First, study the publicly observable evidence: the live pricing and packaging pages listed in 'provided_materials' show …
- Product Led Growth
- Enterprise Sales
- Pricing Strategy
Open coursework - StrategyIntermediateNew
Migrating from Relational to NoSQL for a Social Media Startup
You are given a simplified relational schema of SnapVibe's current database (users, posts, comments, likes). Your task is to: (1) analyze the limitations of the relational model…
- Nosql
- Mongodb
- Data Migration
Open coursework - AnalysisIntermediateNew
Open-Source License Audit and 60-Day Remediation Plan for Lumen Observability
Work only from the four items in provided_materials. Start with the dependency inventory (the 'Lumen dependency inventory' dataset), which lists every open-source package, its d…
- Oss Licensing
- Sbom
- Supply Chain
Open coursework - AnalysisIntermediateNew
Audit BLEU vs. COMET on a Multilingual Customer-Support Corpus
You receive 600 source-translation-reference triples covering 6 languages (EN as source; ES/FR/DE/JA/PT-BR/HI as targets), each scored on adequacy and fluency (1-6) by 3 profess…
- Mt Evaluation
- Neural Mt
- Statistical Analysis
Machine Translation - ResearchIntermediateNew
Field-Investigate Performance Practices for a SaaS Scale-up
Work only from the materials provided to you: the Northwind Signals company case-file, the anonymized employee engagement survey dataset, and Google's public re:Work performance…
- Performance Management
- Goal Setting
- Feedback Culture
Open coursework - ResearchIntermediateNew
Explore the Bias-Variance Trade-off on a Tabular Healthcare Cohort
You receive a 90,000-patient anonymized de-identified tabular dataset (demographics, labs, claims-derived features) and a binary 12-month-readmission outcome. Pick three model f…
- Bias Variance Tradeoff
- Regularization
- Model Selection
Open coursework - CodeIntermediateNew
Build a Clinician-Grade HealthKit Cardiac Rehab iOS App
Build a SwiftUI app targeting iPhones running iOS 17 or later that requests the four HealthKit read permissions named in the product brief (PM-1), reads the last seven days of d…
- Mobile Development
- Ios Swift
- Healthkit
Open coursework - CodeIntermediateNew
Ship an Engineering-Health Dashboard for an 18-Team Org
Using the four sample data extracts (pull-request events, Linear work-item history, PagerDuty incidents, and the quarterly developer-experience survey) and the organization brie…
- Software Analytics
- Dora Metrics
- Space Framework
Open coursework - StrategyIntermediateNew
Brand Repositioning for a Legacy Fashion Retailer
Your task is to develop a brand repositioning strategy for Classic Threads. Conduct a brand audit, analyze consumer perceptions, and define a new brand identity. Propose a marke…
- Brand Audit
- Consumer Insights
- Brand Positioning
Marketing Strategy
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.