ML Infra Engineer, Platform

Physical Intelligence
San Francisco, CA
On-site

Who this role is best for

Aimed at mid-to-senior-level infrastructure engineers who can own complex systems and work in fast-moving environments.

Best fit for

  • Mid-to-senior-level infrastructure engineers with experience in scalable cloud systems and multi-cloud environments
    — “multi-cloud considerations, designing authentication/authorization flows”
  • Candidates who thrive in ambiguous environments and have a history of adapting to rapidly evolving tech domains
    — “spin up quickly on unfamiliar and ambiguous domains”
  • Individuals with a strong background in distributed systems and service-oriented architectures
    — “Deep experience with cloud platforms (GCP, AWS) and distributed systems”

Things to consider

  • The role requires a high level of autonomy and ownership in system design and operations
    — “own systems end-to-end, from design through operation”

How to stand out

  • Demonstrate experience with security, logging, and metrics in distributed environments
    — “treat security, logging, metrics, tracing, and alerting as first-class platform primitives”
  • Emphasize your ability to reduce infrastructure churn through standardization and abstraction
    — “reducing infra churn by standardizing patterns, abstractions, and interfaces”
  • Showcase your understanding of cost optimization and performance tuning across compute, networking, and storage
    — “Ability to reason about system bottlenecks, performance tuning, and cost optimizations”
  • Demonstrate your ability to improve developer experience through clear platform interfaces
    — “build clear, documented interfaces for using platform infrastructure”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • operating and evolving Kubernetes clusters
  • building scalable microservice platform
  • improving developer experience
Typical background
experience with cloud platformsbackground in distributed systemsfamiliarity with Kubernetes

Skills & requirements

Required

Cloud PlatformsDistributed SystemsKubernetesInfrastructure-as-codeObservabilitySecurityService-oriented Architectures

Preferred

Agent InfrastructureSandboxing

Stack & domain

KubernetesCloud PlatformsDistributed SystemsInfrastructure-as-codeContainerizationObservabilityCost OptimizationInternal Platform ToolingLoggingMetricsTracingIncident ResponseSlosDebugging Complex Distributed SystemsCross-functional CommunicationOwnership MindsetAIRoboticsMLSimulation

About the role

Original posting from Physical Intelligence via Ashby

Who We Are

Physical Intelligence is bringing general-purpose AI into the physical world. We are a team of engineers, scientists, roboticists, and company builders developing foundation models and learning algorithms to power the robots of today and the physically-actuated devices of the future.

The Team

The Infrastructure team builds and operates the backbone of everything PI does: from training state-of-the-art VLA models, to orchestrating large-scale simulation, to reliably deploying intelligence across fleets of physical robots. The team works closely with researchers, robotics runtime, product, and platform engineers to ensure infrastructure scales from prototype to production-grade deployments.

In This Role You Will

  • Own and scale AI-native infrastructure: You will operate and evolve Kubernetes clusters and service deployment patterns, and help build a scalable microservice platform for internal systems such as evaluation services, operational tooling, and internal APIs with agent-use as the primary interface. This includes supporting safe rollouts, upgrades, and rollback strategies.
  • Drive security, observability and cost-aware infrastructure: You will treat security, logging, metrics, tracing, and alerting as first-class platform primitives, and build systems that surface reliability and performance issues early. You will also help improve cost visibility and enable cost-aware decision-making at the infrastructure level.
  • Harden platform foundations: You will own core infrastructure with multi-cloud considerations, designing authentication/authorization flows, networking architecture, quota and rate-limiting services, and cloud primitives that behave predictably. A major part of this work is reducing infra churn by standardizing patterns, abstractions, and interfaces.
  • Improve developer experience: You will build clear, documented interfaces for using platform infrastructure, reducing the gap between “I need infra” and “I can run my workload.” This includes supporting consistent local vs. remote development workflows and improving self-serve infrastructure usage.
  • Collaborate and lead through ownership: You will work closely with researchers and other engineers to understand requirements and constraints, translate fast-moving needs into reusable infrastructure, and own systems end-to-end, from design through operation.

What We Hope You'll Bring

  • Extremely strong first-principles thinking.
  • Familiarity with agent infrastructure, observability, security and sandboxing
  • Deep experience with cloud platforms (GCP, AWS) and distributed systems: compute orchestration, networking, autoscaling, service meshes, load balancing.
  • Ability to reason about system bottlenecks, performance tuning, and cost optimizations across compute, networking, and storage.
  • Comfort with Kubernetes, cluster-level reliability, and service-oriented architectures.
  • Solid intuition around scalability, performance, and failure modes.
  • Experience with infrastructure-as-code (e.g. Terraform), containerization, and modern platform engineering practices.
  • Familiarity with logging, metrics, tracing, incident response, SLOs, and debugging complex distributed systems.
  • Strong cross-functional communication and ownership mindset.
  • Experience (4-6 years) working in fast-moving or early-stage environments where ambiguity is normal with demonstrated growth trajectory.

Ultimately, we’re looking for someone who can spin up quickly on unfamiliar and ambiguous domains, has a strong sense of ownership, and cares deeply about our mission. Even if you don’t check all the boxes above, we strongly encourage you to apply if this sounds like you.

Bonus Points If You Have

  • Experience with large-scale ML training, evaluation, or simulation infrastructure.
  • Experience with secrets management systems (e.g., Doppler).
  • Background in observability, cost optimization, or internal platform tooling.
  • Exposure to robotics, simulation, or real-time systems.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Source: Physical Intelligence careers (Ashby)

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