Promote team culture

I try to continously promote a culture of test driven development and testable code/system to ensure the correctness of the system is maintained

• Ensure each business logic has corresponding unit test, to ensure that the logic is maintained.
• Added automated test mechanisms for invoicing workflows, this reduces engineering effort in the long run
• Housekeeping: such as ensuring API tests and Unit test coverage to be above OE Scorecard standards.
• Improve API tests from 20 percent to 75 percent and improved Unit test coverage to be consistently above 70 percent
• Implemented test feature flags to allow testing on prod e.g. this is inline with trying to push for a testable system

Improve the processes/ operationalisation of the dev team

• Pushed for each code release to prod from a monthly basis to a biweekly basis. Since staging and production are more closely matching, the team would have more confidence to test and push code to production
• Ensured each code push is reviewed within the same day
• Promoted documentation of planning and implementations
• Promoted and coordinated release readiness data checks

Improve operationalisation/ observability of service

• add alerts via email and slack to alert if error is higher than normal
• maintain system dasboard for various metrics, such as latency, error count and percentage
• logged various classification of errors for easier root cause analysis