Business Challenges
Explore business challenges on Ewance to sharpen the skills employers actually hire for. Practice marketing, finance, operations, and strategy work on real-shaped briefs and earn verified credentials.
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- CodeSeniorNew
Design a Polyhedral Loop-Tiling Strategy for a Tensor DSL
Study the DSL's IR (provided, MLIR-based with linalg-style ops). Choose a tiling strategy (rectangular tiling with cost-modeled tile sizes is the safe baseline; full polyhedral …
- Polyhedral Analysis
- Loop Tiling
- Mlir
Advanced Compilers and Program Optimization - AnalysisSeniorNew
Memory Consistency Model Audit of a Lock-Free Queue
Read the SPSC queue source (around 200 lines of C++). For each atomic operation, classify the required ordering and verify the chosen memory_order is sufficient under both x86-T…
- Memory Consistency
- Concurrency
- Lock Free Programming
Advanced Computer Architecture - CodeSeniorNew
Build a Lock-Free MPMC Queue for a Trading-Backend Hot Path
Implement Vyukov's bounded MPMC queue in C++20 using atomic operations with explicit memory orderings (relaxed where safe, acquire/release on the enqueue/dequeue handshake). Use…
- Lock Free Algorithms
- Memory Models
- Systems Language Proficiency (Go, Rust, C++)
Advanced Concurrency and Parallel Computing - ResearchSeniorNew
Compare NewSQL Architectures for a Real-Time Inventory Platform
Study the architecture papers and documentation for CockroachDB (its Spanner-inspired multi-active design), TiDB (Raft + multi-Raft + TiKV + TiDB SQL layer), and Spanner (TrueTi…
- Newsql
- Distributed Databases
- Raft
Advanced Database Systems 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
- ResearchSeniorNew
Cross-Cultural Redesign of a Microfinance App for 4 Markets
Run remote contextual inquiry with 4 users each in Kenya + Indonesia (8 sessions total via local interpreters). Conduct expert reviews with native designers for Philippines + In…
- Cross Cultural Design
- User Research
- Contextual Inquiry
Advanced Human-Computer Interaction - StrategySeniorNew
TLS and PKI Migration to Post-Quantum for a Cross-Border Bank
Receive an anonymized TLS inventory (endpoint, current cipher suite, TLS version, certificate issuer, last rotation, business criticality) and the bank's PKI hierarchy. Score en…
- Tls
- Pki
- Post Quantum Cryptography
Network Security - CodeSeniorNew
Linkerd to Istio Migration for a Multi-Cluster Platform
Phase 1: install Istio alongside Linkerd in PERMISSIVE mode (Istio sidecars injected, Linkerd proxies remain). Phase 2: migrate non-critical namespaces first (4 namespaces) by r…
- Istio
- Linkerd
- Service Mesh
Service Mesh and Microservices Networking - CodeSeniorNew
Plan Under Uncertainty for a Warehouse Restocking Robot
You receive a discrete-event simulator of a 1,200-shelf warehouse with calibrated optical-scanning error rates and stock-out cost per shelf. Formulate the restocking decision as…
- Planning Under Uncertainty
- Pomdp
- Monte Carlo Planning
Advanced Robotics - 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.
- StrategySeniorNew
Run a Mock Algorithmic-Discrimination Investigation for a Hiring-Tech Vendor
As a 3-person team, design and execute a 3-week mock inquiry. Produce: (1) the demand letter you imagine the regulator sending (scope, legal basis, data requested); (2) the vend…
- Regulatory Analysis
- Algorithmic Fairness
- Ai Governance Frameworks
AI Law, Policy, and Regulation - 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
AI Software Engineering Group Project - ResearchSeniorNew
Concept-Activation Vectors for an Autonomous-Vehicle Perception Audit
You receive a trained semantic-segmentation model (8 classes including pedestrian, vehicle, road, sky), an internal validation set of 2,500 driving frames, and a small concept-i…
- Tcav
- Concept Explanations
- Interpretability
Explainable and Interpretable AI - PresentationSeniorNew
Run a Post-Mortem on a Failed ML Deployment
You receive a packet: original training data sample, post-launch production logs, three Slack-style threads from the on-call rotation, and a summary of the telco's complaints. R…
- 5 Whys & Fishbone Root Cause Analysis
- Stakeholder Framing
- Model Monitoring
Machine Learning in Practice 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
- ResearchSeniorNew
Plan a Parameter-Efficient Fine-Tuning Strategy for a Big-Tech AI Lab
You will produce (1) a 6-page survey of four PEFT methods (LoRA, adapters, prefix tuning, IA3) with their strengths, weaknesses, and parameter footprints, (2) a one-page decisio…
- Parameter Efficient Fine Tuning
- Transfer Learning
- Fine Tuning
Meta-Learning, Transfer Learning, and Multi-Task Learning - DesignSeniorNew
Design a Distributed Training Job for a 13B-Parameter Model
Decide whether to use Fully Sharded Data Parallel (FSDP), Tensor Parallelism, Pipeline Parallelism, or a hybrid; justify against the 13B-param + 32-H100 setup. Calculate memory …
- Distributed Training
- Fsdp
- Pytorch Or Tensorflow
Machine Learning Systems - ResearchSeniorNew
Design a Distributed-Training Strategy for a Mid-Sized LLM
You will write a 5-page design memo that picks a parallelism strategy for fine-tuning a 13B model on 32 H100 GPUs, with a tokens-per-second estimate, a memory-per-GPU calculatio…
- Distributed Training
- Parallelism Strategies
- LLM Training
Machine Learning at Scale - 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 - ResearchSeniorNew
Diagnose Levers of Control at a Stockholm Fintech
Conduct a Levers of Control diagnostic of the chosen fintech. Build evidence from at least 30 public artifacts (job ads, leadership interviews, Glassdoor reviews, regulatory fil…
- Levers Of Control
- Qualitative Research
- Contingency Theory
Advanced Management Accounting & Control - StrategySeniorNew
Hedge Accounting Strategy for a Vietnamese Coffee Exporter
Build a hedge accounting playbook covering: (1) hedge designation and documentation templates for at least two hedging relationships, (2) prospective and retrospective effective…
- GAAP / IFRS
- Hedge Accounting
- Exotic Derivatives
Advanced Financial Accounting & IFRS - 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
International Marketing - StrategySeniorNew
Fintech Partnership Risk Assessment for a Traditional Bank
Your task is to conduct a risk assessment for WellsTrade's potential partnership with PayFlow. Review PayFlow's business model, cybersecurity posture, regulatory compliance (e.g…
- Operational Risk
- Vendor Risk
- Cybersecurity
Banking and Financial Institutions - ResearchSeniorNew
Buying Behavior Analysis for a Dutch Sustainable Packaging Startup
Your task is to investigate the B2B buying process for sustainable packaging. You will design a semi-structured interview guide based on the buying center framework. Recruit and…
- B2B Marketing
- Buying Behavior
- Qualitative Research
Business-to-Business Marketing - ResearchSeniorNew
Frame Dependence in Investment Decisions for a Renewable Energy Fund
You are a behavioral finance analyst at GreenCap Partners. Your task is to audit past investment decisions for framing effects, then design a decision template that forces consi…
- Frame Dependence
- Prospect Theory
- Decision Framing
Behavioural Finance - CodeSeniorNew
Auditing a DeFi Lending Protocol for Vulnerabilities
You are provided with the Solidity source code for LendFlow's core lending pool contract and a simplified oracle contract. Your task is to conduct a manual security audit, focus…
- Solidity
- Smart Contract Auditing
- Decentralized Finance
Blockchain and Digital Assets - StrategySeniorNew
Stakeholder Management for a Renewable Energy Project in Spain
You are a team of three sustainability consultants hired by SolarVent. Your task is to: (1) identify and map all relevant stakeholders, (2) analyze their interests, influence, a…
- Stakeholder Mapping
- Community Engagement
- Conflict Resolution
Business, Government and Society
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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