Beginner Challenges

Real-world scenarios at the beginner level. Earn verified credentials as you practice the work your degree prepares you for.

DisciplineAll Analysis Code Design Strategy Research Presentation

LevelAll Foundational Beginner Intermediate Senior

SkillsBrowse skill families

DesignBeginnerNew
Lean Transformation for a Boston D2C Cosmetics Startup
Your task is to develop a comprehensive lean transformation plan for GlowUp Naturals' new in-house production facility. You must propose a cellular layout, implement kanban for …
- Lean Manufacturing
- Production Layout Design
- Kanban
Open coursework
AnalysisBeginnerNew
Design a Churn-Prediction and Retention Model for TaskFlow
Using the TaskFlow customer dataset and the VP's framing memo (both provided), design and document a churn-prediction model. Perform exploratory analysis to surface patterns and…
- Logistic Regression
- Classification
- Feature Engineering
Open coursework
DesignBeginnerNew
Design a Golden-Path Service Template for a Scaling SaaS Platform Team
Using the current-state assessment (provided), the platform team's golden-path requirements specification (provided), and the baseline deployment-metrics dataset (provided), des…
- Platform Engineering
- Golden Paths
- Backstage
Open coursework
DesignBeginnerNew
A/B-Test a Recommender Improvement Without Breaking Trust
You receive offline-evaluation results for both the production and candidate models plus aggregate metrics from the last 12 weeks (recipe views, save rate, weekly active users, …
- Experiment Design
- Ab Testing
- Metric Design
Machine Learning in Practice
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
AnalysisBeginnerNew
Cost-Model a Foundation-Model API Migration
You receive: 90 days of API logs (request volume, token distributions), the customer's golden eval set of 200 prompts, the incumbent and new pricing schedules, and quality ratin…
- Cost Modeling
- Ai Strategy
- Model Evaluation
AI for Business and AI Product Management
AnalysisBeginnerNew
Demand Forecasting for a New York D2C Cosmetics Brand
You are a forecasting analyst at Glow NYC. Using provided monthly sales data (units sold) for 10 SKUs, develop a time series forecast for the next 3 months. Compare at least two…
- Time Series Analysis
- Forecasting
- Data Visualization
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CodeBeginnerNew
Build and Ship a Bug-Tracker MVP with Full CI/CD
Week 1: write a 1-page SRS + Figma wireframes for 5 screens (login, bug list, bug detail, file bug, dashboard). Week 2-3: implement with Next.js + Supabase + Tailwind, with unit…
- Full Stack Development
- Requirements Engineering
- Ci Cd
Software Engineering Foundations
AnalysisBeginnerNew
Right-Size a Real-Time Recommendation Serving Cluster
You receive 7 days of request-level telemetry (timestamp, latency, error code, pod) plus the existing Horizontal Pod Autoscaler (HPA) and node-group configs. Analyze traffic pat…
- Model Serving
- Kubernetes
- Autoscaling
Machine Learning at Scale
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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.
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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
Open coursework
AnalysisBeginnerNew
Requirements Elicitation for a Sustainable Fashion Platform
Conduct stakeholder interviews (simulated via provided personas) and create a requirements specification. Include functional and non-functional requirements, user stories, accep…
- Requirements Elicitation
- User Stories
- Acceptance Criteria
Software Engineering and Quality Assurance
DesignBeginnerNew
Design a Canary Deployment Strategy for Corso Nove Checkout
Using the incident postmortem (incident-postmortem), the platform architecture spec (platform-architecture-spec), the per-service reliability targets (slo-targets-brief), and th…
- Flagger
- Argo Rollouts
- Canary Deployment
Open coursework
DesignBeginnerNew
Design Secrets Management for a Regulated GitOps Pipeline
Design the secrets topology: Vault as the single source, External Secrets Operator (ESO) syncing into Kubernetes Secrets with auto-rotation. SecretStore + ClusterSecretStore bou…
- External Secrets Operator
- Hashicorp Vault
- Secrets Management
GitOps and Continuous Delivery
Get recognized by recruiters and employers.
Credentials are blockchain-anchored via LearnCoin — tamper-evident, portable, link-shareable on LinkedIn and beyond.
Why Ewance
CodeBeginnerNew
Implement a User-Space Shell with Process and Signal Handling
Implement a shell in C (no shell helpers, just POSIX system calls). Required features: read a line, parse it into commands + arguments, handle pipelines with arbitrary chain len…
- System Calls
- Process Management
- Signal Handling
Computer Systems and Organization
ResearchBeginnerNew
Run a Human-Preference Study Comparing Two Coding Assistants
Design a blinded paired-comparison study: 12 developer participants, each gets the same 8 realistic coding tasks (refactor, write a function, debug, test), each task is solved b…
- Experiment Design
- Statistical Evaluation
- Human Evaluation
AI Measurement and Evaluation
CodeBeginnerNew
Markov Random Field for Image Segmentation in Crop Monitoring
You receive 60 Sentinel-2 image tiles (10-meter resolution) over 12 vineyards, each tile with per-pixel disease labels from agronomist field walks. Take the consultancy's existi…
- Markov Random Fields
- Graph Cuts
- Image Segmentation
Open coursework
CodeBeginnerNew
Optimizing Last-Mile Delivery for a Lisbon Grocery Startup
Your task is to build a linear programming model (or heuristic) to assign orders to vehicles and sequence deliveries. Success means reducing average route length by at least 15%…
- Linear Programming
- Python
- Route Optimization
Open coursework
AnalysisBeginnerNew
Capital Budgeting for a Munich D2C Cosmetics Expansion
Your task is to build a discounted cash flow model comparing the two expansion strategies over a 5-year horizon. You must estimate initial investment, projected revenues, operat…
- Discounted Cash Flow
- Net Present Value
- Internal Rate Of Return
Open coursework
CodeBeginnerNew
Hybrid Search RAG for a HR-Policy Assistant
You receive 1,800 pages of policy documents (Markdown) and 150 labeled question-answer pairs with the gold source policy IDs. Build a hybrid retrieval pipeline: BM25 + dense emb…
- Hybrid Search
- Bm25
- Dense Retrieval
Open coursework
DesignBeginnerNew
Design an Automated Essay-Feedback System
You receive 20 anonymized middle-school essays scored by 2 human teachers on a 4-dimension rubric (structure, evidence, voice, mechanics). Design an LLM-based feedback system th…
- Automated Assessment
- Rubric Design
- Prompt Engineering
AI in Education and Learning Analytics
AnalysisBeginnerNew
Lease Accounting for a Restaurant Chain
Your team's task is to implement ASC 842 for Taco Fresco's 50 leases. You have a spreadsheet with lease data: commencement dates, terms, renewal options, annual rent (including …
- Lease Accounting
- ASC 842
- Present Value
Open coursework
DesignBeginnerNew
Choose a Sidecar Cache Store for a Hotel-Search API
Using the captured workload trace and the platform requirements brief in the provided materials, design a proposal that selects one of Redis, KeyDB, or DragonflyDB as the sideca…
- Nosql
- Redis
- Benchmarking
Open coursework
AnalysisBeginnerNew
Recommend a Payout Policy for a Mature Data Analytics Firm
Work only from the two items in the provided materials: the DataStream Inc. financial case file and the peer payout dataset. Using the case file, calculate the effect of each op…
- Dividend Policy
- Share Buyback Analysis
- Capital Structure
Open coursework
CodeBeginnerNew
Build a Fairness Evaluation Harness for a Credit-Score Model
Implement a Python module that, given model predictions, ground truth, and group identifiers, computes demographic parity difference, equal-opportunity difference, predictive-pa…
- Algorithmic Fairness
- Statistical Evaluation
- Python
AI Measurement and Evaluation
AnalysisBeginnerNew
Fair Trade Sourcing for a San Francisco D2C Cosmetics Brand
You are a junior sustainability consultant hired by GlowRoot. Evaluate the current sourcing cost, the cooperative's request (a 15% price increase), and the impact on product pri…
- Stakeholder Analysis
- Cost Benefit Analysis
- Ethical Decision Making
Open coursework

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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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