Aleksandr worked on the tact-lang/tact repository, where he developed Slack-based notifications for GitHub Actions workflows to replace the previous Telegram integration. He focused on aligning environment variables and message formats to ensure seamless compatibility with Slack, using YAML for workflow configuration and leveraging CI/CD best practices. This update standardized notification delivery to a single Slack channel, improving incident triage and operator visibility for the team. By integrating Slack notifications directly into the CI pipeline, Aleksandr enhanced reliability and response times. The work demonstrated a focused application of GitHub Actions, Slack integration, and YAML, with depth in cross-tool automation.