Principal Software Engineer

Description

Liberty Mutual is building the future of Surety Underwriting through the modernization and globalization of our technology platform, and we’re looking for a Principal Software Engineer to help lead that effort.

This is a hybrid position requiring two days in the office a week in our Portsmouth, Boston, or Plano tech hub locations. We cannot consider candidates that require visa sponsorship or candidates that currently are on an F1 or OPT visa at this time. In this role, you’ll work within GRS Distribution & Underwriting Technology, specifically Product Enablement, helping shape the technical direction for the Surety domain as we evolve from legacy systems to a modern React, Type Script, NestJS, and AWS-based architecture.

You’ll partner with engineering leadership, solution engineers, product partners, and delivery teams to design scalable solutions, guide execution, and help deliver a more modern and globally capable Surety platform.

This is a role for someone who thrives in complex environments, enjoys solving ambiguous problems, and can balance near-term delivery needs with long-term technical health. You’ll partner closely with fellow Principal engineers, engineering leadership, solution engineers, product partners, and delivery teams to design practical, scalable solutions and guide execution from concept through implementation.

What you’ll doHelp shape the technical direction for Surety underwriting modernization, including the transition from legacy systems to a modern React / NestJS platform

Partner with product, engineering, and delivery teams to translate Surety business needs into scalable, globally capable technical solutions

Provide technical guidance and design support for contractor-led delivery teams to improve consistency, quality, and execution predictability

Provide technical leadership and architectural guidance for one or more engineering teams

Lead design discussions and help shape system and application-level solutions

Review and influence technical decisions to improve quality, consistency, maintainability, and scalability

Mentor engineers and help raise the technical bar across the teams

Qualifications

What we’re looking forA strong technical leader with deep experience in designing and building software systems with engineering excellence

Comfortable operating in ambiguous, evolving environments with multiple stakeholders

Experience developing with AI Engineering practices such as Agentic Development, Spec-driven development and other practices

Able to influence without authority and align teams around clear technical direction

Pragmatic about tradeoffs and focused on delivering durable solutions

Skilled at mentoring engineers and raising team capability

Able to balance hands-on technical work with broader leadership responsibilities

Communicative, collaborative, and effective in cross-functional settings

Qualifications

Extensive experience in software engineering, with demonstrated principal-level technical impact

Strong experience designing scalable, maintainable systems

Proven ability to lead technical discussions and drive design decisions

Experience working in agile environments and collaborating across engineering, product, and operations

Ability to coach and influence engineers at multiple levels

Experience supporting modernization efforts and/or complex enterprise systems is strongly preferred

Eight or more years of software engineering experience

Education:

A bachelor’s or master’s degree in a technical or business discipline, or equivalent experience

Why join usThis is an opportunity to make a meaningful technical impact in a business-critical area while helping shape the evolution of Surety technology within a major enterprise organization. You’ll have the chance…