AI-Driven Marketing ML Engineer, Production Systems

Cornerstone VC; United States; On-site; USD 94,000 - 161,000; Full time

Job summary

Cornerstone VC in London is hiring an ML Engineer to design, build, and ship production ML systems powering our AI-native marketing platform. You will work on real-time chat, agent orchestration, and data-driven workflows.

The ideal candidate has strong production ML experience, hands-on with LLMs, RAG, and Python pipelines, and is comfortable in a fast-moving product environment. Bonus for Elixir experience and marketing analytics exposure.

Qualifications

• Strong production experience building and shipping ML systems.
• Hands-on experience with LLMs, RAG, agents, or workflow-driven AI systems.
• Solid engineering fundamentals: Python, APIs, data pipelines, evaluation.

Responsibilities

• Develop and deploy ML/LLM systems for marketing-specific workflows (reporting, analysis, review, compliance).
• Build agentic systems with persistent memory, tool use, and workflow orchestration.
• Integrate models with live data sources (Google Ads, GA4, Meta Ads, CRM, analytics).
• Improve retrieval, evaluation, and fine-tuning on marketing-domain data.
• Collaborate with product and engineering to ship reliable, user-facing AI.

Skills

ML systems

Python

APIs

Data pipelines

LLMs

RAG

Workflow AI

Tools

Elixir

Job description

Cornerstone VC in London is hiring an ML Engineer to design, build, and ship production ML systems powering our AI-native marketing platform. You will work on real-time chat, agent orchestration, and data-driven workflows.

The ideal candidate has strong production ML experience, hands-on with LLMs, RAG, and Python pipelines, and is comfortable in a fast-moving product environment. Bonus for Elixir experience and marketing analytics exposure.