Designing a micro-service, Atlassian architecture, modern tech stack, cloud-based, scalable, RESTful API, containerized using Docker, orchestrated with Kubernetes, service discovery, circuit breaker pattern, API gateway, load balancer, monitoring dashboard, Grafana, Prometheus, logs aggregation, ELK stack, collaborative development, agile workflow, Jira integration, Bitbucket repository, CI/CD pipeline, automated testing, code review, Atlassian ecosystem, developer-centric design, modular architecture, high availability, fault tolerance, real-time data processing, event-driven communication, message broker, RabbitMQ, Apache Kafka.