The AI Builder · Horizontal

AI Builders. Horizontal across every function.

Engineering builds AI systems. Marketing builds AI campaigns. HR builds AI talent agents. Legal builds AI contract reviewers. Every function now has its AI Builder, and most don't have a name for the role yet. Here's the map.

44 buckets · 264,613 real job postings · see the naming-gap analysis →

Business-function AI Builders

Function-native AI Builders

Every business function is hiring an AI Builder of its own, Marketing, Finance, HR, Legal, Sales, Operations, Customer Experience. The role is being invented in real time. The market has 228 distinct titles for this layer and zero canonical names.

Engineering AI Builders

Engineering AI Builders

The loud layer. The market has already named these roles, ML Engineer, AI Engineer, Applied AI, Forward Deployed Engineer, Agentic Developer, Prompt Engineer, plus the newest pair: AI Accelerator (internal FDE) and AI Solution Architect. These are the platform team that the function-native AI Builders lean on.

AI Engineer

564 postings

The most-hired AI Builder role in the market today.

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Applied AI Architect / Engineer

164 postings

Bridges model labs and customers.

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Forward Deployed Engineer

641 postings

Sits inside the customer's workflow.

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AI Accelerator (Internal FDE)

6 postings

FDE pointed inward. Embeds inside a business function (Stripe: 20-marketer pods; Box: cross-functional) and builds the agents the function uses daily. Hands-on: deliverable isn't an integration, it's

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Agentic Developer

330 postings

Builds multi-step agent workflows.

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AI Agent Engineer

27 postings

Builds and operates the agent itself: tool-use, memory, planning, and execution of a single production agent as a shippable unit.

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Prompt Engineer

13 postings

Designs, tests, and maintains prompt suites and evals.

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Loop / Harness Engineer

4 postings

The 2026 successor to the Prompt Engineer.

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ML Engineer

881 postings

The pre-agentic AI Builder.

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LLM Engineer / LLMOps

63 postings

The LLM-native engineer.

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AI Solution Architect

132 postings

Designs the AI system around the model, orchestration, retrieval, evals, guardrails, security boundary, observability.

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AI Research Scientist

189 postings

Pushes the model frontier: novel architectures, evals, fine-tuning research.

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AI Data Engineer

64 postings

Builds the data layer AI runs on: ingestion, feature stores, embeddings, retrieval.

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AI Deployment Engineer

70 postings

Gets AI from proof of concept into production at the customer.

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AI Platform Engineer

67 postings

Builds the shared platform every other AI builder builds on: model serving, orchestration infrastructure, evals, guardrails as a service.

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AI Security Engineer

33 postings

Secures the AI layer: prompt injection, model supply chain, agent permissions and data boundaries.

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MLOps Lead

48 postings

Runs models in production: pipelines, monitoring, retraining, rollback.

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AI Solutions Engineer

17 postings

The pre-sales and post-sales engineer for AI products: runs the demo, builds the pilot on the customer's data, and carries the integration through onboarding.

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AI Operators & Cross-Functional Roles

Cross-functional & Leadership

Roles that sit above or across function lines. Executives steering AI (CAIO, Head of AI, VP AI, Director AI). Governance owning its impact on people and society (Responsible AI Officer). Ambassadors translating capability to audiences (AI Evangelist). Non-engineer builders shipping software via AI (Vibecoder).

Chief AI Officer

1 posting

Brand-new role. CAIO emerged as a corporate title in 2023-2024 and is being appointed at most Fortune 500s now, the named workforce underneath is what Nuvepro builds.

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Head of AI

18 postings

Function-level AI leader (Head of AI for Marketing, Head of AI Enablement, Head of International Applied AI).

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VP AI

49 postings

Enterprise AI leadership at the VP/SVP level, typically running the AI platform, AI product, or AI-X function (AI Security, AI Strategy, AI Innovation).

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Director AI

48 postings

Operational AI ownership, often the role accountable for shipping AI features and AI-touching products in a specific business unit.

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Responsible AI Officer

58 postings

The HR-equivalent for AI.

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AI Evangelist

8 postings

Cross-functional AI ambassador.

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Vibecoder

Emerging

Non-engineer who ships software via AI.

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AI Orchestrator Lead

17 postings

Owns the layer between agents and people.

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AI Validator

17 postings

The assurance layer for AI work.

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AI Product Manager

149 postings

Owns the AI product. Decides what the model or agent should do, scopes the human-in-the-loop, and ships AI features. The market has named this one; it sits between the AI Builders and the business.

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AI Strategist

37 postings

Sets the AI agenda for a function or the enterprise: where to deploy agents first, what to buy versus build, how the operating model changes.

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AI Program Manager

30 postings

Runs AI initiatives to delivery: coordinates the build, the change, the rollout, and the measurement across teams.

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AI Consultant

17 postings

The advisory AI expert brought in to scope, design, and de-risk AI adoption.

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AI Adoption Lead

18 postings

Owns getting AI actually used, not just deployed.

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AI Agent Operator

Emerging

Runs the agents once they are deployed: watches queues, quality, and escalations day to day.

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Off the org chart

The AI trainer gig layer

Beneath every named AI role sits a contingent-labor layer: domain experts hired per-task to train, evaluate, and red-team models. Not employees, not headcount, a labor market parallel to the org chart. Mercor reports ~30,000 contractors at an average billed rate near $95/hr; Scale AI's Outlier runs a similar platform. Where the judgment, taste, and domain expertise that tunes today's models actually comes from.

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