Overview
What this challenge is about.
Repository + Unit-of-Work Refactor on an EF Core Codebase. Advanced challenge in code. Writing production code that solves real engineering problems, earn a ...
The Brief
What you'll do, and what you'll demonstrate.
Refactor one EF Core bounded context to Repository + Unit-of-Work and measurably cut query count and p95 latency on critical queries.
This is not a coding exercise. It is the work a software engineer does between a Jira ticket and a merged PR. That distinction matters to every hiring manager who has seen candidates solve LeetCode problems and none who have shipped production code under real constraints.
When you finish, you will have something most graduates do not: a real-world deliverable, verified by Ewance, that you can show to a hiring manager and say "I did this. Here is the proof."
Earning criteria — what you'll demonstrate
- Apply Repository + Unit-of-Work patterns to a real EF Core codebase
- Design specifications that let repositories stay aggregate-scoped
- Measure query performance before/after with concrete numbers
- Hand off a refactor pattern to other bounded contexts
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Software Design and Design Patterns
Master · Software Engineering
Strong alignment
This challenge maps to Software Design and Design Patterns at the Master level. It sharpens the same practical skills your coursework expects — but in a real industry context with actual constraints and deliverables.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Repository Pattern
Apply repository pattern to solve real industry problems and demonstrate production-level capability.
- Unit Of Work
Apply unit of work to solve real industry problems and demonstrate production-level capability.
- Design Patterns
Apply design patterns to solve real industry problems and demonstrate production-level capability.
- Refactoring
Apply refactoring to solve real industry problems and demonstrate production-level capability.
- Performance Tuning
Apply performance tuning to solve real industry problems and demonstrate production-level capability.
- Characterization Testing
Apply characterization testing to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: