Computer Sciences Challenges
Explore computer science challenges on Ewance to equip yourself with job-relevant skills for a variety of roles. Learn programming techniques and build technical skills with challenges on software development, algorithm design, system architecture, and more.
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- CodeBeginnerNew
Tabular Q-Learning for Warehouse Slotting
You receive a Python discrete-event simulator with state encoded as a 12-dimensional categorical vector (around 8,000 reachable states) and 6 possible slotting actions, plus 2 y…
- Tabular Rl
- Q Learning
- Epsilon Greedy
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 - CodeBeginnerNew
Behavior Cloning for a Pick-and-Place Manipulator
You receive 200 human teleoperated demonstrations (state + action trajectories) of picking 8 small electronic components from a tray and placing them at marked locations in a ro…
- Behavior Cloning
- Imitation Learning
- Manipulation
Open coursework - CodeBeginnerNew
Plan Safe Paths for a Last-Mile Sidewalk Robot
You receive 4 hours of recorded sidewalk traversals with annotated pedestrian tracks, occupancy grids, and a map of the pilot neighborhood. Implement a sampling-based planner (R…
- Motion Planning
- Sampling Based Planning
- Cost Function Design
Open coursework 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.
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- CodeBeginnerNew
Build a Crawler-and-Topic Pipeline for Public-Sector Web Analytics
You will build a polite, robots.txt-respecting crawler that ingests about 30,000 new posts/week across the 80 forums into a normalized dataset. Apply a topic model (BERTopic, wi…
- Web Crawling
- Topic Modeling
- NLP Pipeline
Open coursework - CodeBeginnerNew
Build a Wake-Word Detector for a Smart-Speaker Startup
You receive a small public Japanese-speech dataset, 30 hours of recorded wake-phrase utterances from 50 volunteers, and 200 hours of background-noise recordings. Train a lightwe…
- Keyword Spotting
- Speech Recognition
- On Device Ml
Open coursework - CodeBeginnerNew
Forecast Hourly Energy Demand for a Microgrid Operator
You receive 24 months of hourly demand, weather (temperature, irradiance), and calendar data for the community. Build a probabilistic forecaster (e.g., quantile regression with …
- Probabilistic Forecasting
- Quantile Regression
- Deep Forecasting
Open coursework - CodeBeginnerNew
Build Semantic Search for an Internal Engineering Wiki
You receive a Confluence XML export (~12k pages, ~80 MB of text) and a hand-labeled benchmark of 50 internal queries with ground-truth doc IDs. Chunk and embed the corpus with a…
- Embedding Models
- Vector Search
- Pgvector
Vector Databases and Embeddings - 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.
- CodeBeginnerNew
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 - CodeBeginnerNew
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 - AnalysisBeginnerNew
Revenue Recognition Audit for a Stockholm Subscription-Software Scale-up
Working only from the three anonymized contract case-files, the current recognition schedule extract, and the official IFRS 15 standard page provided to you, restate revenue for…
- IFRS 15
- Revenue Recognition
- Contract Analysis
Open coursework - StrategyBeginnerNew
IP Strategy for a SaaS Scale-Up Moving Upmarket
You are an IP strategy associate at a boutique law firm. TaskFlow's CTO has asked for a strategic memo outlining how to protect their algorithm and brand. You must evaluate whet…
- Ip Law
- Patent Analysis
- Trademark Strategy
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Why Ewance
- AnalysisBeginnerNew
Optimizing Ad Spend for a D2C Cosmetics Brand
You are a data analyst at Glow & Grow. Using the provided dataset (simulated), perform an exploratory data analysis to understand trends in ad performance. Build a regression mo…
- Data Analysis
- Regression
- Data Visualization
Open coursework - AnalysisBeginnerNew
Revenue Recognition for a SaaS Scale-Up
Your task is to produce a revenue recognition memo for the CloudSync contract. You must apply the ASC 606 five-step model, identify distinct performance obligations (software li…
- Revenue Recognition
- ASC 606
- Contract Analysis
Open coursework - CodeBeginnerNew
Demand Sensing for a 40-Person SaaS Scale-Up
You are a growth analyst at FlowMetrics. Using weekly data on signups, trial conversions, website traffic, and marketing spend, develop a model to forecast monthly subscription …
- Time Series Forecasting
- Regression Analysis
- Python
Forecasting for Decision Making - DesignBeginnerNew
Design a Scalable Recruitment Process for a Growing Cosmetics Startup
Using the company case file, the hiring-metrics readout, the role intake notes, and the candidate-experience survey provided to you, design a recruitment process for three roles…
- Recruitment
- Job Analysis
- Interview Design
Open coursework - StrategyBeginnerNew
Evaluate and Plan an ERP Migration for VerdeVida
Working only from the VerdeVida company dossier and the current-systems-and-requirements specification provided to you, compare the two ERP platforms described on their official…
- ERP Evaluation
- Change Management
- It Strategy
Open coursework - StrategyBeginnerNew
Align IT With Growth at a Direct-to-Consumer Cosmetics Startup
Using the company dossier, the operational friction log, and the strategic alignment model primer provided to you, assess how well GlowUp's current technology supports its busin…
- It Alignment
- Strategic Planning
- Business Process Analysis
Open coursework - StrategyBeginnerNew
Redesign Sales Incentives for a Scaling Software Company
Using the anonymized monthly sales-performance dataset and the company background and current-plan case file you are given, design a single replacement commission plan for the s…
- Incentive Design
- Compensation Analysis
- Sales Strategy
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
Optimizing Last-Mile Delivery for a San Francisco Grocery Startup
Your task is to formulate a minimum-cost flow problem for daily delivery routes. Use the provided order data (locations, time windows, volumes) and vehicle specs (capacity, spee…
- Linear Programming
- Network Flow
- Python
Operations Research and Optimization - CodeBeginnerNew
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
Open coursework - StrategyBeginnerNew
Design a Hybrid Sales Strategy for GlowUp Naturals
Design a six-month sales strategy that takes GlowUp Naturals from selling only direct-to-consumer to a blended model adding retail partnerships and business-to-business corporat…
- Sales Planning
- Negotiation
- CRM
Open coursework - DesignBeginnerNew
Optimizing Checkout Flow for a Seoul D2C Cosmetics Brand
Your task is to map the current checkout process using a service blueprint, identify pain points (e.g., long load times, confusing steps), and propose a redesigned process with …
- Service Blueprinting
- Process Analysis
- Customer Experience Design
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Browse challenges aligned to your studies.
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Accept the one that fits your goals.
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