Senior Tools Development Engineer (COSMOS Platform Software)

• We are looking for a Senior Tools Development Engineer to help shape the future of COSMOS, Astera Labs’ unified platform software
• In this role, you’ll build the tools that customers and engineers rely on every day to configure, monitor, debug, and validate Astera Labs products
• You’ll work at the intersection of software, hardware, and systems engineering—creating intuitive applications, command-line utilities, automation frameworks, and infrastructure that improve developer productivity and customer success
• If you enjoy building high-quality software, solving complex engineering problems, and developing tools that bridge applications, systems, and silicon, we’d love to hear from you
• COSMOS, Astera Labs’ unified platform software
• You’ll work at the intersection of software, hardware, and systems engineering—creating intuitive applications, automation frameworks, and infrastructure that improve developer productivity and customer success
• If you enjoy building high-quality software, solving complex engineering problems, and working across multiple programming languages and technologies, we’d love to talk to you
• Design, develop, and maintain COSMOS Explorer (GUI) and COSMOS CLI, the primary software interfaces for configuring, monitoring, and debugging Astera Labs products
• Develop desktop applications, command-line utilities, and automation tools using C#, C, C++, and Python
• Build software that communicates directly with Astera Labs silicon to enable telemetry, diagnostics, validation, and product configuration
• Design reusable frameworks and utilities that improve engineering productivity and simplify product bring-up and debug
• Create automated testing and validation tools that improve software quality, reduce manual effort, and accelerate product releases
• Leverage modern AI-assisted development tools to improve developer productivity, automate repetitive tasks, and accelerate test creation where appropriate
• Debug complex software and system-level issues spanning applications, firmware, drivers, and hardware platforms
• Write clean, maintainable, and well-documented code while participating in peer code reviews
• Collaborate closely with firmware, hardware, validation, and product engineering teams to define new platform capabilities
• Help shape the evolution of the COSMOS software platform through technical leadership and continuous improvement

Benefits

• Flexible time off in the US
• Parental leave
• 401K
• Retirement and pension plans
• Competitive medical, dental and vision plans

• 5+ years of professional software development experience
• Python
• C
• C++
• C#
• Experience developing modern object-oriented software applications
• Strong debugging and problem-solving skills
• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field
• Excellent written and verbal communication skills
• Strong programming experience in several of the following:
• Ability to thrive in a fast-paced, collaborative engineering environment
• Experience developing desktop applications using technologies such as:
• Avalonia
• WPF
• MAUI
• WinUI
• Qt
• Experience building software tools, SDKs, utilities, or developer productivity applications
• Experience designing automation frameworks and test infrastructure
• Familiarity with Git, CI/CD workflows, and modern software engineering practices
• Experience working with Windows and Linux environments
• Familiarity with AI-assisted software development tools such as GitHub Copilot, ChatGPT, Cursor, Claude Code, or similar productivity tools
• Knowledge of PCIe®, CXL®, Ethernet, or other high-speed interconnect technologies
• Exposure to firmware, embedded software, device drivers, or silicon validation
• Familiarity with server architecture, storage systems, networking equipment, or AI infrastructure
• Experience with lab equipment such as oscilloscopes, protocol analyzers, or traffic generators
• Experience communicating with hardware devices over PCIe, Ethernet, USB, I²C, SPI, or similar interfaces