Principal Full-Stack Engineer & AI Platform Architect

Liberty Mutual Insurance; Boston (MA); On-site; USD 140,000 - 190,000; Full time

Job summary

Liberty Mutual Insurance seeks an accomplished senior software engineer to lead and shape multiple large-scale production applications. You will drive technical direction, mentor teams, and advance AI-powered features using LLM APIs and modern cloud-native tooling.

In this role, you will apply strong design patterns, steward CI/CD, and collaborate with product partners to deliver reliable, scalable solutions for business impact.

Qualifications

• Bachelor's degree in technical or business discipline.
• 8+ years of Full Stack Engineering experience, with leadership exposure.
• Experience as a technical lead or principal engineer.
• Expertise in OO design patterns, architectural patterns, and distributed systems.

Skills

Technical leadership

Full stack engineering

OO design patterns

Distributed systems

TypeScript

React

Node.js

AWS Lambda

AWS S3

SQL

Spring Boot

GitHub Actions

AI/ML concepts

LLM APIs integration

RAG patterns

Vector databases

Embedding models

Prompt engineering

Responsible AI

Cloud-native AI APIs

Education

Bachelor's degree in technical or business discipline

Tools

GitHub Actions

OpenAI APIs

Azure OpenAI

AWS Bedrock

Job description

Liberty Mutual Insurance seeks an accomplished senior software engineer to lead and shape multiple large-scale production applications. You will drive technical direction, mentor teams, and advance AI-powered features using LLM APIs and modern cloud-native tooling.

In this role, you will apply strong design patterns, steward CI/CD, and collaborate with product partners to deliver reliable, scalable solutions for business impact.