During May 2025, Lukasz worked on the hashicorp/nomad-autoscaler repository, focusing on backend stability and reliability. He addressed a concurrency issue in Go by fixing a race condition between worker and policy handler goroutines, which previously caused hangs during scaling actions. By introducing a buffered cooldown channel, Lukasz ensured that workers no longer blocked when cooldown periods extended, improving the autoscaler's responsiveness under load. This debugging effort required deep understanding of Go’s concurrency primitives and backend development principles. The solution reduced scaling-related outages and enhanced operational confidence, reflecting careful engineering and a strong grasp of system-level reliability challenges.