Overview
What this challenge is about.
Strangler-Fig Migration of a Monolithic Order Service. Advanced challenge in code. Writing production code that solves real engineering problems, earn a bloc...
The Brief
What you'll do, and what you'll demonstrate.
Execute the first three slices of a strangler-fig migration from a PHP order monolith to a Go service, with zero downtime and dual-write reconciliation.
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 the strangler-fig pattern as iterative slices, not a parallel rewrite
- Design dual-write reconciliation that catches divergence before customers do
- Use feature flags + percentage rollouts to bound migration blast radius
- Document a migration playbook reusable across subdomains
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Refactoring and Code Smell Detection
Master · Software Engineering
Strong alignment
This challenge maps to Refactoring and Code Smell Detection 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.
- Strangler Fig Pattern
Apply strangler fig pattern to solve real industry problems and demonstrate production-level capability.
- Refactoring
Apply refactoring to solve real industry problems and demonstrate production-level capability.
- Legacy Modernization
Apply legacy modernization to solve real industry problems and demonstrate production-level capability.
- Go Programming
Apply go programming to solve real industry problems and demonstrate production-level capability.
- Dual Write Reconciliation
Apply dual write reconciliation to solve real industry problems and demonstrate production-level capability.
- Feature Flags
Apply feature flags 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: