2023
Billing application takeover
Takeover and corrective maintenance of a critical billing application after a contractor left.
- PHP
- Symfony
- React
- SQL
- Legacy
The context
A critical billing application in production at Skiset, whose original contractor had left with no documentation. The risk: breaking billing at the slightest change, in the middle of the season.
In-depth analysis and documentation of the legacy code before applying a single fix, followed by corrective maintenance of the application.
Key features
- Study, documentation and takeover of legacy code
- SQL query optimisation
- Bug hunting and fixes with no side effects
- Integration of the Sage API (Webservice 100)
The result
Application taken over autonomously, documented and stabilised. Fixes shipped with no side effects — zero regression on a critical system, season finished with peace of mind.