← Search all jobs

Principal Full Stack Engineer

Liberty Mutual Insurance

Boston, MA · Posted April 15, 2026

Just laid off? Start here: a plan for the first weeks

See every open role at Liberty Mutual Insurance

More in Massachusetts job market · Financial Services & Banking · Engineering jobs

More roles at Liberty Mutual Insurance

Similar jobs

Where Boston, MA ranks

Where Boston, MA placed in our monthly rankings, month by month. Each month stays online at its own address.

How AI is used in this kind of work

Among software developers, AI is already used for some of the tasks. Measured exposure for software developers: 29% (some).

Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.

Check how this applies to your own job

Skills this job asks for

Say which you have and which you want to build. We use it to match you to jobs like this one.

  • Agile
  • AWS
  • CI/CD
  • Java
  • Oracle

About the job

Bachelor's Degree in technical discipline, preferably computer science or software development or equivalent experience. Minimum 8 + years of Full Stack Development experience primarily using the following technologies in addition to Java: React, MobX, Semantic UI, MySQL, Oracle, Git, and Docker. Experience with AWS services for IVR, e.g., Lex and Lambda, plus Amazon Connect. Experience with API development using NodeJS and TypeScript/JavaScript Experience with application observability tools, e.g., DataDog. Extensive professional experience developing applications using Java (Java 8+ / 11 / 17). Strong proficiency in object-oriented design, data structures, and design patterns. Hands-on experience with Spring / Spring Boot, including RESTful services and dependency injection. Experience building and consuming APIs (REST, JSON, OpenAPI). Solid understanding of multithreaded programming, concurrency, and performance tuning. Experience with relational databases (Oracle, PostgreSQL, MySQL) and ORM frameworks such as Hibernate/JPA. Familiarity with CI/CD pipelines, automated testing, and version control (Git) and GitHub Actions. Strong troubleshooting skills with the ability to debug and resolve complex issues in production systems. A design thinking, test-driven development, and shift-left mindset. Ability to mentor others and raise a team's technical capabilities. Hands-on involvement with layered systems architectures, designs and shared software concepts. Experience working in an agile environment. Excellent negotiation, facilitation and consensus-building capabilities. Strong leadership, coaching and mentoring skills. Proven ability to speak to varying levels of the organization and successfully collaborate across the organization. Ability to work collaboratively with Agile methodologies (Scrum, Kanban) and cross-functional teams (Product Owners, Software Engineers, Test Engineers) to drive technology decisions and support engineering excellence. Openness and adaptability to respond to fast-moving circumstances. Excellent oral and written communication skills.Aptitude for working in teams.