CareerPlan

AI Technical Lead (Principal Engineer)

Cambridge, Massachusetts, United StatesFull-time$203k–$239k2026-10-15 → 2026-11-10
HybridNo visa sponsorship

Core

Design and build an AI-powered insurance marketplace where AI agents shop on a person's behalf, owning the technical architecture from models to MCP servers.

Role type

Principal AI Technical Lead (LLM Systems & Architecture)

Builds

An agentic insurance shopping platform using open-weight models and MCP servers

Domain

Insurance / Generative AI / LLM Infrastructure

Deliverable

production ML models

Required skills

Open-weight model fine-tuning (LoRA, QLoRA, SFT, DPO), LLM system architecture, model serving and orchestration, Python, Rust, evaluation and guardrails, cost optimization, technical mentorship

Preferred skills

Enterprise-level design experience, strategic thinking, open-source contribution

Technologies

Python, Rust, Open-weight models, MCP server, Cloud platforms

Responsibilities

Own the agent's reasoning architecture and model selection, fine-tune and serve open-weight models, deploy reliable and cost-effective infrastructure, build evaluation sets and monitoring systems, design data models and tools, set engineering patterns and standards, mentor engineers

Seniority

Principal, hands-on IC with leadership