Refactor a Legacy Reporting Script for a Renewable-Energy Startup
Overview
What this challenge is about.
Refactor a Legacy Reporting Script for a Renewable-Energy Startup. Intermediate challenge in code. Writing production code that solves real engineering probl...
The Brief
What you'll do, and what you'll demonstrate.
Refactor a 1,200-line single-file reporting script into modular abstractions while proving output equality with the existing baseline.
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
- Identify responsibilities tangled in a real legacy script
- Apply higher-order functions to replace nested-loop logic
- Design a data abstraction that isolates layers from each other
- Prove behavioral equivalence with the previous implementation
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Programming Abstractions
Bachelor · Programming Languages
Strong alignment
This challenge maps to Programming Abstractions at the Bachelor 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.
- Abstraction
Apply abstraction to solve real industry problems and demonstrate production-level capability.
- Higher Order Functions
Apply higher order functions to solve real industry problems and demonstrate production-level capability.
- Refactoring
Apply refactoring to solve real industry problems and demonstrate production-level capability.
- Python Programming
Apply python programming to solve real industry problems and demonstrate production-level capability.
- Data Abstraction
Apply data abstraction to solve real industry problems and demonstrate production-level capability.
- Modular Design
Apply modular design 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: