Can you give examples of complex situations you faced at your previous job and discuss possible solutions?

In my previous job, one of the challenging situations was the instability of the CI/CD pipeline due to frequent failures in integration with external services. This led to delays in releases and a decrease in the team's trust in automation.

Possible solutions:

• Implementing retries and timeouts for external calls to reduce the impact of temporary failures.
• Dividing the pipeline into independent stages with the ability to rerun only the failed parts.
• Monitoring and alerting for quick response to issues.
• Using mocks and stubs for testing integrations in an isolated environment.

Another example is scaling infrastructure during a sudden increase in load. Solutions included automatic scaling via Kubernetes Horizontal Pod Autoscaler and optimizing database configurations to reduce delays.