AI Infra Engineer

Perplexity is an AI-powered answer engine founded in December 2022 and growing rapidly as one of the world’s leading AI platforms. Perplexity has raised over $1B in venture investment from some of the world’s most visionary and successful leaders, including Elad Gil, Daniel Gross, Jeff Bezos, Accel, IVP, NEA, NVIDIA, Samsung, and many more. Our objective is to build accurate, trustworthy AI that powers decision-making for people and assistive AI wherever decisions are being made. Throughout human history, change and innovation have always been driven by curious people. Today, curious people use Perplexity to answer more than 780 million queries every month–a number that’s growing rapidly for one simple reason : everyone can be curious.

We are looking for an AI Infra engineer to join our growing team. We work with Kubernetes, Slurm, Python, C++, PyTorch, and primarily on AWS. As an AI Infrastructure Engineer, you will work in a hybrid SRE / Dev Engineering capacity, partnering closely with our Infrastructure and Research teams to build, deploy, and optimize our large-scale AI training and inference clusters.

Responsibilities

• Design, deploy, and maintain scalable Kubernetes clusters for AI model inference and training workloads
• Manage and optimize Slurm-based HPC environments for distributed training of large language models
• Develop robust APIs and orchestration systems for both training pipelines and inference services
• Implement resource scheduling and job management systems across heterogeneous compute environments
• Benchmark system performance, diagnose bottlenecks, and implement improvements across both training and inference infrastructure
• Build monitoring, alerting, and observability solutions tailored to ML workloads running on Kubernetes and Slurm
• Respond swiftly to system outages and collaborate across teams to maintain high uptime for critical training runs and inference services
• Optimize cluster utilization and implement autoscaling strategies for dynamic workload demands

Qualifications

Required Skills

Preferred Skills

Required Experience

The cash compensation range for this role is $190,000 - $250,000.

Final offer amounts are determined by multiple factors, including, experience and expertise, and may vary from the amounts listed above.

Equity : In addition to the base salary, equity may be part of the total compensation package.

Benefits : Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan.

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Will you now or in the future require visa sponsorship for employment?

Perplexity has an office-centric work model with 4 days per week in the office from the San Francisco Bay Area or New York City. Are you willing to come in 4 days per week?

If you are not based in any of these locations, are you open to relocation to San Francisco, Palo Alto, or New York City?

What are you looking for in your next role?

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