software engineer (Python / infrastructure / macOS)

Sauce Labs provides continuous testing and error reporting solutions. Its Continuous Testing Cloud identifies quality signals in development and production, helping companies release and update web and mobile applications across browsers, operating systems, and devices.

• Set the team’s standards for testing, observability, and delivery through code review and pairing
• Design and build services across the device lifecycle, from device boot images to teardown, including readiness, session lifecycle, and fleet definitions for simulators and VMs
• Automate image, browser, and payload releases through CI/CD pipelines with automated checks; ship in Go or Python using repeatable deployment paths
• Build and use observability tooling across the fleet and image build pipeline, including for guests and VMs that fail silently before their payload starts
• Identify root causes and fix recurring lifecycle regressions with tests and automated release checks
• Measure and reduce device boot, ready, and teardown times; manage image and side-disk footprint
• Work with the Cloud and Test Orchestration teams to propose and implement evidence-backed changes to systems outside the team’s ownership, keeping layer contracts explicit

• Experience designing, building, and operating distributed systems in production
• Hands-on experience with Kubernetes, ideally including fleet orchestration such as Agones or a comparable session-fleet model
• Ability to ship production code in Go and/or Python through a standard CI/CD deployment path, including building and maintaining pipelines
• Experience with metrics, logging, tracing, and building observability into systems
• Hands-on DevOps and Linux/Unix systems experience, including diagnosing and fixing issues on VMs, container hosts, or bare-metal machines
• Track record of delivering through code review and pairing on systems operated by others
• Будет плюсом: macOS literacy including simctl, launchd, XPC, and Apple’s virtualization/simulator stack; APFS or similar filesystem internals; experience across Windows and Linux infrastructure; familiarity with the Apple Virtualization Framework and tools such as tart; Appium, XCTest, or WebDriver familiarity; ownership of VM, container, CI runner, or game server startup, boot, or ready-time metrics; Swift experience; experience building and maintaining OS or VM images with Packer, tart, Ansible, cloud-init, or sysprep

• Hybrid workplace; employees located near an office must be able and willing to come in, while remote hires must be able and willing to travel to an office as required by the role