Founding Machine Learning Engineer

The role

The Founding Machine Learning Engineer will own the end-to-end ML pipeline from data ingestion to model publishing. You will build, fine-tune, and optimize models for tool selection, routing, retrieval, and agent memory to be deployed in enterprise environments.

What you will do

• Run Arcade's ML pipeline end to end from data and training through evaluation and release
• Fine-tune and train models for tool selection, routing, retrieval, and agent memory
• Expand use cases into search and recommendation over tools and agent context
• Build the evaluation system using offline evals and online production measurement
• Quantize, optimize, and package models for customer VPCs and air-gapped environments
• Build the loop from production agent traces and tool-call data to better models
• Choose the ML stack and write the strategy
• Decide what to build using depth in modern agent systems
• Use AI to compound your own output

Required qualifications

• 7+ years of software engineering experience
• 4+ years training and shipping production ML systems
• Experience training or fine-tuning models that went to production and moved customer metrics
• Expertise in production agent systems including harnesses, memory, skills, tool use, and sub-agents
• Knowledge of how and when fine-tuning works and how to apply it
• Statistics fluency to evaluate model deltas
• Experience deploying models under real constraints like tight latency budgets or limited GPUs
• Strong Python for training and ML work
• TypeScript or Go for production services
• Comfort with ambiguity
• An insatiable desire to ship

Nice to have

• Shipped ML into enterprise on-prem or regulated environments
• Tool-use benchmark or eval work
• Familiarity with the MCP (Model Context Protocol) ecosystem
• Built training-data pipelines from production traces with privacy controls
• Been the first ML hire somewhere before
• Open-source contributions or published work
• Experience at an early-stage startup

Benefits

• Competitive salary
• Equity
• Competitive benefits

About the company

Arcade is the MCP runtime that gives agents the power to securely take action inside enterprise systems. The company is building a tools catalog and tool-calling platform for AI agents.