Docker Swarm & CapRover Infrastructure Engineer (Urgent Recovery & Stabilization)

We are looking for an experienced DevOps Engineer with deep expertise in Docker Swarm, CapRover, Linux server administration, and networking to help recover and stabilize a production environment. Our infrastructure is hosted on Linux servers running Docker Swarm and CapRover. Following maintenance and cleanup operations, most application services have recovered successfully, but the CapRover management dashboard remains unavailable and is returning a 502 error. The goal is to restore full CapRover functionality without impacting existing production services and to identify and resolve the root cause of the issue. Current Situation - Docker Swarm cluster with multiple nodes - CapRover v1.14.1 - NGINX service is running - Application services are running and accessible - CapRover dashboard returns NGINX 502 - captain-captain service exists but tasks remain stuck in NEW state - Service updates do not progress to container creation - Manager node is healthy and active - Swarm networks and services exist, but CapRover management service is not scheduling correctly - Need investigation before making potentially destructive changes Required Skills - Docker Swarm (Expert) - CapRover (Expert) - Linux Server Administration - NGINX - Docker Networking (Overlay Networks) - Docker Service Scheduling & Troubleshooting - SSL / Let's Encrypt - Disaster Recovery & Infrastructure Stabilization Responsibilities - Diagnose why CapRover service is stuck in Docker Swarm scheduler - Restore CapRover dashboard access - Validate swarm networking and service placement - Investigate overlay network issues - Review Docker service definitions and swarm state - Ensure no production applications are impacted - Document findings and remediation steps - Recommend long-term improvements and backup/recovery procedures Deliverables - Fully functioning CapRover dashboard - Root cause analysis - Infrastructure health assessment - Written documentation of fixes performed - Recommendations to prevent recurrence Environment - Linux - Docker Swarm - CapRover - NGINX - Production workloads currently running