Senior Challenges
Real-world scenarios at the senior level. Earn verified credentials as you practice the work your degree prepares you for.
- StrategySeniorNew
Value Creation Plan for a SaaS Scale-Up
Develop a 100-day value creation plan: analyze current sales funnel, pricing tiers, and customer segments. Propose changes to sales compensation, product packaging, and customer…
- Value Creation
- Saas Metrics
- Pricing Strategy & Elasticity
Private Equity - AnalysisSeniorNew
Diagnose and Fix Query-Planner Misestimates in a FinTech Warehouse
For each of the 6 queries, capture EXPLAIN (ANALYZE, BUFFERS) and compare estimated vs actual rows at each node. Identify the misestimate source per query (single-column stats s…
- Query Optimization
- Postgresql Planner
- Extended Statistics
Advanced Database Systems - ResearchSeniorNew
Performance Pay for Teachers in a Charter School Network
Your task is to design a performance pay system for teachers that links compensation to student achievement and other performance metrics. The system must address equity concern…
- Performance Pay
- Stakeholder Mapping
- Educational Measurement
Motivation and Incentives - CodeSeniorNew
Build a Secure Multi-Party Computation Demo for Cross-Bank Fraud Detection
Pick MP-SPDZ as the MPC framework. Build a 4-party demo computing two protocols: (1) private set intersection of suspicious-account IDs across banks, (2) joint aggregate (count …
- Secure Computation
- Mpc
- Cryptography
Privacy-Enhancing Technologies 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
- CodeSeniorNew
PPO Alignment Loop with a Pretrained Reward Model
You receive a small open-weights base model (around 7B), a previously trained reward model, and 5,000 prompts (no responses) for PPO rollouts. Run PPO with TRL's PPOTrainer for …
- Rlhf
- Ppo
- Reward Hacking
Machine Learning from Human Preferences (RLHF and Alignment) - CodeSeniorNew
Reverse-Engineer and Patch an N-Day Vulnerability in a Vendor Binary
Receive the vulnerable binary (Linux ELF, x86-64), the public CVE-2025-XXXX advisory + PoC, and the bank's deployment context (RHEL 9, the binary runs as a non-root service). Lo…
- Reverse Engineering
- Binary Exploitation
- Ghidra
Computer Systems Security - CodeSeniorNew
Implement a Proof-of-Stake Consensus Mechanism in Rust
Read the Casper FFG paper (Buterin + Griffith, 2017) and design a simplified PoS implementation in Rust: 21 validators, 32-slot epochs, two-phase finality (justify, then finaliz…
- Consensus Algorithms
- Blockchain Protocols
- Systems Language Proficiency (Go, Rust, C++)
Blockchain and Decentralized Systems Engineering - StrategySeniorNew
Service Quality Improvement for a Regional Hospital Chain
Your task is to conduct a gap analysis using SERVQUAL dimensions (reliability, responsiveness, assurance, empathy, tangibles) based on patient survey data (provided). Identify t…
- Service Quality
- Servqual
- Process Improvement
Service Operations Management - 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
Revitalizing a Traditional Manufacturer with Lean and Culture Change
Your task is to create a comprehensive transformation plan for SteelCraft. The plan should include a cultural assessment, a lean implementation roadmap, a change management stra…
- Lean Manufacturing
- Organizational Culture
- Change Management
Leading Change and Organizational Development - CodeSeniorNew
Survival-Analysis Risk Model for an Oncology Decision-Support Pilot
You receive a curated public colorectal cancer cohort (about 9,000 patients, demographics, stage, grade, comorbidities, baseline labs, censored survival times). Fit (1) a Cox pr…
- Survival Analysis
- Risk Stratification
- Model Calibration
Machine Learning for Healthcare and Biomedicine - CodeSeniorNew
Auto-Vectorize an Inner Loop for AVX-512
Profile the existing kernel on a 12-dataset benchmark (provided). Pick one of two strategies: (a) add an LLVM IR-level vectorization pass plugged into the existing pipeline, or …
- Vectorization
- Llvm
- Loop Optimization
Advanced Compilers and Program Optimization - CodeSeniorNew
Port a Numerical Kernel from CPU to GPU for a CFD Simulator
Receive the existing CFD solver (C++17 + OpenMP, around 8,000 lines, the hot kernel is a 7-point stencil sweep over a 512^3 grid), the validation harness, and access to an A100 …
- Gpu Programming
- Cuda
- Parallelism
Performance Engineering of Software Systems 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
Digital Innovation Lab for a Regional Bank
Your task is to design a blueprint for the innovation lab. Define its structure (e.g., hub-and-spoke, virtual team), governance (e.g., stage-gate process), and funding model. Pr…
- Innovation Lab Design
- Regulatory Compliance
- Legacy System Integration
Digital Transformation - CodeSeniorNew
Build an Intrusion-Detection Rule Pack for a Manufacturing PLC Fleet
Analyze provided PCAP (packet capture) files from 3 anonymized customer sites covering normal operating windows and 2 red-team simulation windows. Implement Suricata rules for 8…
- Intrusion Detection
- Ics Security
- Suricata
Cyber-Physical and Cybercrime Topics - ResearchSeniorNew
Benchmark Long-Context Architectures on a Legal-Doc Retrieval Task
You receive a public legal-QA dataset (e.g., LongBench's legal split or similar) filtered to documents over 50,000 tokens. Implement or wrap 3 architectures: a sliding-window Tr…
- Long Context Architectures
- State Space Models
- Hugging Face Transformers
Advanced Deep Learning - CodeSeniorNew
Cache-Optimize a Graph-Analytics Kernel for a Social Platform
Receive the existing kernel (C++ + OpenMP, around 1,200 lines), the 1.8B-edge graph (CSR format, around 14GB), and target hardware (dual-socket AMD EPYC 9354, 384GB DDR5, 256MB …
- Cache Optimization
- Graph Algorithms
- Memory Hierarchy
Performance Engineering of Software Systems - CodeSeniorNew
Harden a Container Supply Chain to SLSA Level 3
Audit the current build and deploy pipeline against the SLSA 1.0 specification. Identify SLSA-3 gaps (typically: provenance generation, hermetic builds, two-person review, signe…
- Supply Chain Security
- Slsa
- Sigstore
DevOps and Secure Deployment - 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 - DesignSeniorNew
Design an End-to-End Encrypted Messaging Protocol
Read the Signal protocol specifications (X3DH, Double Ratchet) and the team's current architecture (server-stored unencrypted messages). Design an E2EE protocol covering: identi…
- Applied Cryptography
- Protocol Design
- Systems Language Proficiency (Go, Rust, C++)
Applied Cryptography - ResearchSeniorNew
Validate a Foundation Model for Protein-Ligand Docking Acceleration
Pick 20 publicly available protein-ligand complexes from the PDBbind dataset (or similar public source). Use a published open-source structural foundation model (e.g., a Boltz-s…
- Foundation Model Evaluation
- Structural Biology
- Model Validation
AI for Science and Engineering - 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 - DesignSeniorNew
CFC Rules Compliance for a Renewable Energy Group
You are a senior international tax advisor hired by GreenVolt. The group has a complex structure with IP holding companies in zero-tax jurisdictions and financing entities in lo…
- Cfc Rules
- Atad
- Tax Restructuring
International Taxation of Multinationals - AnalysisSeniorNew
Brain-Tumor MRI Segmentation Bake-Off
You receive a curated public multi-modal MRI brain-tumor cohort (~600 patients, T1/T1c/T2/FLAIR with whole-tumor / tumor-core / enhancing-tumor masks). Train all three architect…
- Medical Imaging
- Segmentation
- Neural Networks
Machine Learning for Imaging and Medical Image Analysis - StrategySeniorNew
Wealth Management and Philanthropy Strategy for a Family Office
You are a wealth management intern at the family office. Your task is to propose a comprehensive strategy covering asset allocation, risk management, and a philanthropic framewo…
- Asset Allocation Modeling
- Philanthropy Strategy
- Family Governance
Family Business Management
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.
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