Senior Underwriter, Inland Marine

Liberty Mutual Insurance – Seattle, Washington – Posted 10/6/2026

About the role

Great underwriters know how to balance data analytics with human intuition. If you like both quantitative and qualitative reasoning, enjoy the challenge and autonomy of managing your own accounts at a company that offers competitive compensation and benefits, then consider joining the underwriting department at Liberty Mutual. As an Inland Marine Underwriter in property casualty insurance, you'll develop, grow and maintain diversified books of business while working closely with agents and brokers to assess risks, determine premiums, set conditions and negotiate deals that maximize profitability and meet business goals.

Responsibilities

• Develop, grow and maintain diversified books of business while working closely with agents and brokers to assess risks, determine premiums, set conditions and negotiate deals that maximize profitability and meet business goals.
• Ensure a profitable Inland Marine book of business by writing new accounts, growing successful agent and broker relationships, and pursuing renewals.
• Crunch the numbers and review data to determine risk selection, premiums, policies and conditions, and identify opportunities for improved growth, profit and diversification.
• Maintain and nurture successful relationships with agents and brokers while presenting proposals, negotiating deals and obtaining approvals.
• Contribute to overall team success by mentoring underwriters in both a technical and professional capacity, sharing best practices and identifying opportunities for continuous improvement.
• Understand that the deal isn’t done until the paperwork is complete; document account reviews, state‑compliant sign‑offs and referrals, letters of authority, and follow underwriting guidelines.

Qualifications

• Aptitude for building rewarding relationships with agents and brokers, peer underwriters, underwriting assistants, and junior underwriters.
• Understanding of contract language, including regulatory and policy differences among applicable states.
• Familiarity with continuous improvement processes and tools.
• Excellent communication skills.
• Strong desk management, collaboration, and underwriting discipline.
• Intermediate‑level knowledge of insurance products/coverage, market segments and marketplace; insurance finance and actuarial concepts; loss control/risk engineering; marketing/selling techniques; regulatory environment; and reinsurance.
• Advanced‑level knowledge of underwriting, pricing, risk selection, and territory management.
• Ability to apply underwriting/appetite, tools, systems, and resources to achieve goals, solve complex problems, establish and build healthy working relationships, participate in mentoring relationships, and negotiate as normally acquired through a related bachelor’s