# Performance Engineer at Astera Labs

- Company: Astera Labs
- What the company does: Astera Labs: Purpose-Built Connectivity for Rack-Scale AI.
- Company website: https://www.asteralabs.com
- Type: Startups
- Level: Mid level
- Location: San Jose, California, United States
- Work setup: On-site
- Pay: $135K to $170K base salary per year (USD)
- Posted: 2026-07-24
- Apply by: 2026-10-12
- Apply: https://job-boards.greenhouse.io/asteralabs/jobs/4718443005
- Page: https://www.1752.vc/careers/jobs/astera-labs-performance-engineer/

## About the role

Astera Labs is a hyper-growth connectivity company enabling the rack-scale AI infrastructure powering the world's most advanced GPU clusters. Our Scorpio scale-up fabric switches are purpose-built to unlock the performance of next-generation AI workloads, and we're looking for a Senior Performance Engineer to demonstrate the real-world value of our silicon where it matters most: on real inference and training workloads running on GPUs at scale.

## What they're looking for

- Performance Characterization & Benchmarking
- Establish theoretical and measured roofline models for Astera Labs' scale-up fabric across key performance metrics, defining the reference for all comparative testing
- Build and maintain baseline performance benchmarks using industry-standard tools such as NVBandwidth and NCCL across a range of GPU configurations and switch topologies
- Quantify the impact of differentiated Astera Labs AI fabric features (e.g., Hypercast, In-Network Computing) against baselines using both synthetic benchmarks and real inference workloads
- Real Workload Analysis & Fabric Scalability
- Run end-to-end inference model workloads on target hardware to capture real-world performance beyond synthetic benchmarks, supporting architecture decisions and customer-facing demonstrations

Tags: CTO Office