Staff AI Platform Engineer - Core Infrastructure

Harvey; New York (NY); Hybrid; USD 231,000 - 340,000; Full time

Job summary

Harvey’s AI Platform team builds the foundation for all products and agents with model routing, context management, and evaluation. You’ll design platform-level systems and own the infrastructure that enables rapid onboarding of foundation models.

Join a fast-growing, mission-driven company redefining professional services with agentic AI, owning end-to-end delivery and mentoring teams to ship reliable AI-powered features.

Qualifications

• 8+ years of experience building backend systems, with at least 1+ year focused on AI/ML engineering and a track record of technical leadership across teams.
• Experience building and shipping multi-model or multi-provider AI systems in production.
• Familiarity with context management, session state, or memory systems in AI or distributed systems.
• A track record of building internal platforms, SDKs, or shared infrastructure that other engineering teams actually adopted - and an understanding of why developer experience matters as much as raw capability.
• Strong judgment about abstractions. Opinionated about good design but pragmatic about shipping incrementally.
• Excitement about agentic AI and the infrastructure challenges of making autonomous systems reliable when the stakes are real.
• A bias toward full ownership: you navigate ambiguity well and don’t wait for a roadmap to start solving problems.
• Bonus: experience building evaluation frameworks, working with agent/function-calling architectures, familiarity with legal or other high-stakes professional services domains, or time at early-stage or hyper-growth startups where the underlying technology changes regularly.

Responsibilities

• Design and build abstractions and platform-level systems that improve all of Harvey’s agentic products.
• Own infrastructure for model integration, routing, and evaluation that helps Harvey choose and deploy the right foundation model for any given context.
• Build evaluation frameworks and tooling that let every team across Harvey iterate on AI quality effectively.
• Partner closely with product engineering teams, PMs, and design to launch cutting-edge AI products.
• Evaluate, prototype, and integrate the latest advancements in AI and agentic systems as they emerge.

Skills

Backend systems

AI/ML engineering

Technical leadership

Multi-model AI systems

Internal platforms

SDKs / developer tooling

Platform abstractions

Agentic AI

Tools

Model integration tools

Evaluation tooling

Job description

Harvey’s AI Platform team builds the foundation for all products and agents with model routing, context management, and evaluation. You’ll design platform-level systems and own the infrastructure that enables rapid onboarding of foundation models.

Join a fast-growing, mission-driven company redefining professional services with agentic AI, owning end-to-end delivery and mentoring teams to ship reliable AI-powered features.