Senior Challenges
Real-world scenarios at the senior level. Earn verified credentials as you practice the work your degree prepares you for.
- AnalysisSeniorNew
Diagnose Clock Skew in a HFT Order Matching System
Receive anonymized PTP grandmaster + slave logs (nanosecond resolution, 30 days, 3 cabinets) plus a synthetic order-flow generator. Identify the drift pattern (likely candidate:…
- Logical Clocks
- Ptp Time Sync
- Cpp Programming
Open coursework - CodeSeniorNew
Video Action Recognition for a Retail Loss-Prevention Startup
Use a public action-recognition dataset (UCF101 + a small curated retail-action subset; the latter is provided synthetic or you can label 50 short clips). Fine-tune a small back…
- Video Understanding
- Action Recognition
- Transfer Learning
Computer Vision - DesignSeniorNew
Re-Architect a Stockholm Cloud Provider's Network for AI Training
Working only from the materials provided — the current three-tier network description (CURRENT-NET), the four-week sampled-flow traffic summary (SFLOW-SUMMARY), the new-rack req…
- Data Center Networking
- Bgp
- Evpn Vxlan
Open coursework - DesignSeniorNew
Design a Strongly-Consistent Distributed Counter for API Quotas
Using the requirements brief ('quotaguard-requirements-brief'), the workload-and-cost reference sheet ('quotaguard-workload-cost-sheet'), and the failure-scenario worksheet ('qu…
- Distributed Databases
- Consensus
- Strong Consistency
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
- DesignSeniorNew
Designing a Feedback Culture for a Remote-First Sustainable Fashion Brand
Research best practices in feedback culture from business psychology (e.g., feedback orientation, psychological safety). Design a feedback system that includes tools, training, …
- Feedback Culture
- Psychological Safety
- Remote Work
Business and Industrial Psychology - CodeSeniorNew
Run a Backpropagation Bug-Hunt on an Open-Source RL Implementation
You receive the offending fork (around 4,000 lines of PyTorch) and three known-failure seeds. Reproduce the NaN failure deterministically, instrument the forward and backward pa…
- Backpropagation
- Pytorch
- Debugging
Deep Learning - ResearchSeniorNew
Stress-Test Scalable Oversight on a Tool-Using Agent
Design a sandwich-oversight study: pick a task domain where non-expert oversight is plausible but not trivial (e.g., reviewing data-analysis steps, checking small bug fixes, eva…
- Scalable Oversight
- Alignment Research
- Experiment Design
AI Safety and Alignment - ResearchSeniorNew
Benchmark Conformal Prediction for a Healthcare Risk-Score
You receive a labeled dataset of about 25,000 patient encounters with the current risk-score's predictions and ground-truth 1-year outcomes. Implement and compare split conforma…
- Conformal Prediction
- Uncertainty Quantification
- Calibration
Statistical Machine Learning - Browse challenges
Explore role
Marketing Analyst
Plan and measure campaigns that grow the business. Funnel analytics, attribution, segmentation, and the rigorous measurement that lets marketing defend its budget at the leadership table.
- CodeSeniorNew
Scale an HPC MPI Workload Across a Multi-Node Cluster
Receive the MPI weather model (Fortran 2018 + C, ~22,000 lines), 4 weeks of strong-scaling logs (1 to 256 ranks), and access to AWS ParallelCluster with EFA-enabled c7gn instanc…
- Hpc Programming
- Mpi
- Parallel Performance
Advanced Concurrency and Parallel Computing - AnalysisSeniorNew
Assess Partnership Risk for WellsTrade's Instant Payments Launch
Using the PayFlow due-diligence data room and the eighteen-month PayFlow operational metrics dataset, identify and quantify the operational, security, compliance, and reputation…
- Operational Risk
- Vendor Risk
- Cybersecurity
Open coursework - StrategySeniorNew
Brand Crisis Simulation for a Global Food Company
You are the global brand crisis response team for TasteWorld. Your task is to produce a crisis management plan within 48 hours (simulated). Constraints: you cannot confirm the c…
- Crisis Management
- Brand Equity
- Stakeholder Communication
Global Brand Management - AnalysisSeniorNew
Financial Statement Analysis for a Renewable Energy Firm
Your team must analyze SunPower's last three years of financial statements (income statement, balance sheet, cash flow statement) and ESG reports. Calculate key ratios (liquidit…
- Financial Statement Analysis
- Ratio Analysis
- Dupont Analysis
Open coursework 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
- DesignSeniorNew
Provably Fair Approximation Algorithm for a Neobank On-Call Roster
Using the roster problem specification (roster-problem-spec), formalize the weekly on-call assignment as a constrained multi-week optimization problem, prove it is NP-hard by re…
- Approximation Algorithms
- Linear Programming
- Np Completeness
Open coursework - StrategySeniorNew
Reposition Mason & Co. to Win Younger Shoppers
Acting as the brand strategist Mason & Co. has retained, design a repositioning proposal for the chain using only the four supplied materials: the company case file, the custome…
- Brand Repositioning
- Customer Segmentation
- Retail Marketing
Open coursework - CodeSeniorNew
Port a CPU Monte-Carlo Simulator to GPU for an Energy Trader
Receive the existing simulator (C++17 + OpenMP, around 5,000 lines), the test book (around 8,000 spread options), and access to an H100 80GB. Port to CUDA: random-number generat…
- Gpu Programming
- Cuda
- Monte Carlo
Advanced Concurrency and Parallel Computing - StrategySeniorNew
Design a Lean and Culture Transformation for a Legacy Manufacturer
Working only from the materials you are given — a company dossier describing SteelCraft's history, structure, and sources of resistance; a shop-floor operations dataset of scrap…
- Lean Manufacturing
- Organizational Culture
- Change Management
Open coursework - StrategySeniorNew
Ethical Marketing Strategy for a Fast Fashion Retailer's Sustainability Line
Your task is to create a marketing campaign for EcoThreads that is transparent, culturally sensitive, and legally compliant. You must develop a communication strategy that highl…
- Ethical Marketing
- Sustainability Communication
- Cross Cultural Marketing
Open coursework - StrategySeniorNew
Negotiating a SaaS Enterprise Deal with a Fortune 500 Manufacturer
Using the deal case file, the procurement positions brief, the comparable-deals benchmark dataset, and the standard contract and service-level agreement template provided to you…
- Enterprise Sales
- Procurement Negotiation
- Contract Negotiation
Open coursework - ResearchSeniorNew
Embodied Visual Reasoning for a Warehouse Pick Assistant
Use an embodied simulator (Habitat 3.0 or Isaac Sim — pick one and justify) to render 300 cluttered-bin scenarios with a target item label. For each scenario, build two reasonin…
- Embodied Vision
- Vision Language Models
- Visual Reasoning
Visual Intelligence and Visual Reasoning - DesignSeniorNew
Build an Edge MLOps Pipeline for a Smart-Agriculture Sensor
You receive a fleet simulator (1,000 simulated sensors with bandwidth + battery profiles), a model registry stub, and the current firmware's model-loading interface. Design and …
- Edge Mlops
- Ota Updates
- Model Versioning
Open coursework - CodeSeniorNew
Stand Up a Data Platform for a Mobility-Data Startup's First ML Model
As a 4-person team, build (1) a streaming ingestion path from a simulated telemetry source (Kafka + Python producer is fine); (2) a batch ETL job into a small warehouse (DuckDB …
- Data Engineering
- Streaming Ingestion
- Feature Store
AI Software Engineering Group Project - CodeSeniorNew
Build an MLOps Platform Slice for a Fintech Risk Team
Across a 5-person team, ship (1) experiment tracking integrated into a sample model training job; (2) a model registry that promotes-by-tag; (3) a training pipeline orchestrated…
- Mlops Design
- Experiment Tracking
- Model Registry
Open coursework - CodeSeniorNew
Implement a Bootloader with Secure OTA for a Medical Wearable
Implement using MCUboot as the secondary-image bootloader. Set up an offline signing pipeline (Ed25519 keys, HSM-backed for production). Implement the OTA client: BLE file trans…
- Mcuboot
- Secure Bootloader
- Firmware Signing
Open coursework - AnalysisSeniorNew
Gender Pay Gap Audit at a Hamburg Tech Scale-up
Your task is to analyze the provided anonymized employee dataset (including salary, job level, tenure, performance rating, and gender) to determine if a gender pay gap exists af…
- Pay Gap Analysis
- Regression Analysis
- Blinder Oaxaca Decomposition
Open coursework
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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