Platform Engineer – AI Environments & Agent Runtime

Fleet AI, Inc.; New York, Northern (NY, KY); Hybrid; USD 150,000 - 230,000; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

On-site work in NYC or SF

Full-time employment

Job summary

Fleet AI, Inc. is an applied AI company building human-AI collaboration at scale. Our platforms enable fast, verifiable training and evaluation of agents across environments, backed by top investors.

The team owns the agent runtime, environment deployment, and the production infrastructure that powers all environments, with a focus on reliability and scalable architecture. This is a hands-on backend/platform role on-site in New York or San Francisco.

Qualifications

• Strong backend and systems fundamentals for distributed/async systems.
• Experience designing queues and internal tooling.
• Ability to instrument changes for reliability and cost.

Responsibilities

• Own the agent runtime and ensure it can pause, resume, and stay steerable while running.
• Make environments ship in one motion from repository to graded deployment.
• Design a durable system of record for tasks, trajectories and verifiers.
• Make long-running jobs checkpointable, with reliable retries and traceability.
• Build evaluation to show impact on quality, latency and cost.
• Turn team-specific solutions into platform primitives used company-wide.

Job description

Fleet AI, Inc. is an applied AI company building human-AI collaboration at scale. Our platforms enable fast, verifiable training and evaluation of agents across environments, backed by top investors.

The team owns the agent runtime, environment deployment, and the production infrastructure that powers all environments, with a focus on reliability and scalable architecture. This is a hands-on backend/platform role on-site in New York or San Francisco.