Senior Tools Development Engineer – COSMOS Platform Software

Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs’ Intelligent Connectivity Platform integrates CXL®, Ethernet, NVLink, PCIe®, and UALink™ semiconductor-based technologies with the company’s COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity.

The company’s custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements. Discover more at

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. 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, 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.

• Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related technical field.
• 5+ years of professional software development experience.
• Strong programming experience in several of the following:
  • C#
  • C
  • C++
  • Python
• Experience developing modern object-oriented software applications.
• Strong debugging and problem-solving skills.
• Excellent written and verbal communication skills.
• Ability to…