P&C Underwriter - Risk Specialist

Obsidian; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Mercor in the United Kingdom is seeking Multiline Property & Casualty Underwriters to design underwriting scenarios, evaluate AI-generated outputs, and ensure alignment with established underwriting standards.

You will craft assessments, rationales, and renewal strategies, grade AI responses for technical accuracy, and provide actionable feedback to improve model behavior. Rolling applications welcome, role starts immediately.

Qualifications

• 2+ years of professional P&C underwriting experience
• Experience underwriting major segments (personal lines, commercial property, etc.)
• Understanding of underwriting lifecycle: submission to renewal and nonrenewal
• Ability to explain how account characteristics affect underwriting decisions
• Strong written reasoning and attention to detail
• Ability to separate underwriting decisions from claims handling and actuarial analysis

Responsibilities

• Design underwriting scenarios involving new business, renewals, exposure analysis, loss history, inspections, pricing, limits, deductibles, exclusions and referrals
• Create underwriting assessments, quote rationales, information requests and renewal strategies
• Write high-quality underwriter-style reference responses
• Grade AI-generated responses for accuracy and consistency with guidelines
• Identify unsupported assumptions and inappropriate accept/decline decisions
• Provide feedback to the research team to improve model behavior
• Participate in onboarding office hours and calibration sessions

Skills

P&C underwriting

Risk judgment

Written communication

Education

CPCU/AU/ARM or comparable designation

Job description

About the Role

Mercor is partnering with a leading AI lab to train frontier models on high-quality insurance reasoning data. We're hiring Multiline Property & Casualty Underwriters to design realistic risk-selection and underwriting scenarios, evaluate model outputs against established underwriting standards, and help shape how the next generation of AI reasons about insurability, pricing, coverage terms, and portfolio fit.

We welcome carrier, MGA, MGU, and program underwriters with experience across personal, commercial, or specialty P&C products. Candidates should have direct authority or meaningful responsibility for evaluating and selecting risks.

What You'll Do

• Design realistic underwriting scenarios involving new business, renewals, exposure analysis, loss history, inspections, classification, pricing, limits, deductibles, exclusions, and referral decisions
• Create work products such as underwriting assessments, quote rationales, information requests, declination explanations, renewal strategies, and risk-improvement requirements
• Write "golden" reference responses at experienced underwriter quality
• Grade AI-generated responses against structured rubrics for technical accuracy, consistency, risk judgment, and adherence to underwriting guidelines
• Identify unsupported assumptions, inadequate risk differentiation, incorrect use of policy terms, and inappropriate acceptance or declination decisions
• Provide written feedback the research team uses to improve model behavior
• Participate in onboarding office hours and calibration sessions

You're a Good Fit If You

• Have 2+ years of professional P&C underwriting experience
• Have underwritten at least one major segment, such as personal lines, commercial property, general liability, commercial auto, package, umbrella/excess, professional liability, cyber, or another specialty line
• Understand the underwriting lifecycle from submission and assessment through quotation, binding, renewal, and nonrenewal
• Can explain how account characteristics, jurisdiction, peril, loss experience, and market conditions affect underwriting decisions
• Demonstrate strong written reasoning, sound risk judgment, and high attention to detail
• Can separate underwriting decisions from claims handling, brokerage advice, and actuarial portfolio analysis

Bonus Qualifications

• CPCU, AU, ARM, or comparable insurance designation
• Multiline underwriting authority
• E&S, MGA/MGU, Lloyd's, or program-business experience
• Catastrophe-exposed property or high-severity casualty experience
• Experience with small commercial, middle-market, national-account, or high-net-worth segments

Role Highlights

• Minimum 20 hours per week (ideally 40+)
• Role starts immediately, applications reviewed on a rolling basis