{"id":2696601,"url":"https://alion.io/job/liberty-mutual-group-princ-full-stack-engineer","title":"Princ Full Stack Engineer","company":{"id":712,"name":"Liberty Mutual Group","domain":"libertymutualgroup.com","url":"https://alion.io/company/liberty-mutual","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":{"grade":"A","score":100,"open_postings":5,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":11,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Boston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":115000,"max_usd":211000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3287},"experience_years_min":8,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"CI/CD","optional":false},{"name":"Datadog","optional":false},{"name":"Dependency Injection","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Hibernate","optional":false},{"name":"JavaScript","optional":false},{"name":"Kanban","optional":false},{"name":"MySQL","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Shift-Left","optional":false},{"name":"Shift-Left Security","optional":false},{"name":"Spring Boot","optional":false},{"name":"TypeScript","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-10-16T10:19:00Z","employer_posted_date":"2026-10-16","last_verified_at":"2026-10-16T23:06:29Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Description\nWe deliver our customers peace of mind every day by helping them protect what they value most. Our passion for placing the customer at the center of everything we do is driving a transformational shift at Liberty Mutual. Operating as a tech startup within a Fortune 100 company, we are leading a digital disruption that will redefine how people experience insurance.\nAt Liberty, you'll thrive in a hybrid setting that fosters in-person collaboration, innovation and growth. This approach optimizes both remote and in-person interactions, enabling you to connect and ideate with your team and deepen valuable relationships across the company, while still enjoying the flexibility of remote work for focused tasks and projects.\nThis role has a hybrid work schedule (2 days onsite) and we are considering candidates based in Portsmouth, NH and Boston, MA,\nYou must be authorized to work in the United States without employer sponsorship now or in the future. We will not sponsor employment visas. Candidates who will require future sponsorship, including candidates on CPT/OPT/STEMOPT who will require future sponsorship, are not eligible to apply.\nHiring Manager - Matthew Empey\nJob Introduction:\nThe Global Finance Technology organization is looking to hire a Principal Full Stack Engineer. The candidate will be part of a talented agile team and will have the opportunity to work on cutting-edge projects. We are seeking a driven and creative individual who is able to think strategically and collaborate effectively with cross-functional teams.\nCandidate will be responsible for technical design and development of cross-functional, multi-platform applications that solve complex business problems. The role will be a highly visible hands-on technology driver supporting platform product development by creating innovative solutions, as well as driving solutions that modernize, stabilize, and support the growth of our portfolio. You will interact with business and tech teams and focus on solution design, development, debugging and performance tuning.\nAbout the job:\nDevelop modern enterprise-level applications in the cloud.\nLead & mentor the technical design, development, and integration of solutions using existing and emerging technology platforms.\nInfluence and coach the broader technical team to help push best practices and understanding of modern design and development practices.\nDefine technology standards, guidelines, and coding practices for the platform.\nCreate architectures for large-scale web-based applications and technology solutions, by collaborating with other architects/technical leads.\nBecome a subject matter expert and gain a deep understanding of the Platform Application and Infrastructure framework.\nWork closely with cross-functional teams and applicable vendors.\nHands-on development with a focus on application modernization, site reliability, containerization, and building appropriate API layers in Java Spring Boot, Node.js, and other distributed technologies.\nParticipate in critical production issues, driving teams towards incident & problem ticket closure.\nParticipate in fit/gap analysis of requirements, help manage user expectations on feature deliverables, provide tactical and strategic options to address issues and technical debt, and develop code to modern standards.\nQualifications\nBachelor's Degree in technical discipline, preferably computer science or software development or equivalent experience.\nMinimum 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.\nExperience with AWS services for IVR, e.g., Lex and Lambda, plus Amazon Connect.\nExperience with API development using NodeJS and TypeScript/JavaScript\nExperience with application observability tools, e.g., DataDog.\nExtensive professional experience developing applications using Java (Java 8+ / 11 / 17).\nStrong proficiency in object-oriented design, data structures, and design patterns.\nHands-on experience with Spring / Spring Boot, including RESTful services and dependency injection.\nExperience building and consuming APIs (REST, JSON, OpenAPI).\nSolid understanding of multithreaded programming, concurrency, and performance tuning.\nExperience with relational databases (Oracle, PostgreSQL, MySQL) and ORM frameworks such as Hibernate/JPA.\nFamiliarity with CI/CD pipelines, automated testing, and version control (Git) and GitHub Actions.\nStrong troubleshooting skills with the ability to debug and resolve complex issues in production systems.\nA design thinking, test-driven development, and shift-left mindset.\nAbility to mentor others and raise a team's technical capabilities.\nHands-on involvement with layered systems architectures, designs and shared software concepts.\nExperience working in an agile environment.\nExcellent negotiation, facilitation and consensus-building capabilities.\nStrong leadership, coaching and mentoring skills.\nProven ability to speak to varying levels of the organization and successfully collaborate across the organization.\nAbility 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.\nOpenness and adaptability to respond to fast-moving circumstances.\nExcellent oral and written communication skills.Aptitude for working in teams.\nEmployees should review all role requirements and apply only for positions for which they are eligible. Hiring processes may vary by country, including differences in procedures, requirements, and timelines. 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