Senior Development Underwriter/Manager - Construction & Casualty

Arthur J. Gallagher & Co. (AJG); Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Competitive compensation

Comprehensive benefits programmes

Career development opportunities and学习

Job summary

Pen Underwriting, part of Gallagher, seeks a Senior Development Underwriter/Manager to lead the Construction & Casualty book in the UK. You will develop and deliver the new business plan, build broker relationships, and manage facilities while ensuring underwriting discipline and alignment with insurer appetite.

You will underwrite complex risks, provide technical guidance, and mentor colleagues in a collaborative, supportive environment that values initiative and growth.

Qualifications

• Experience underwriting Construction and Casualty risks, including complex cases.
• Proven track record developing and converting new business through broker relationships.
• Leadership and mentoring experience with collaborative teams.
• IT proficiency and commitment to personal development.

Responsibilities

• Lead the development and delivery of the new business plan for Pen’s Construction & Casualty segment.
• Build strong broker relationships to identify and convert profitable opportunities.
• Negotiate and manage facilities, ensuring underwriting discipline and insurer appetite.
• Underwrite complex risks and provide technical guidance to colleagues, mentoring the team.

Skills

Underwriting

Construction & Casualty

Broker relationships

Negotiation

Leadership/mentoring

IT proficiency

Education

CII/Dip CII qualification or progress towards it

Job description

Introduction

At Pen, we don’t just underwrite risk, we unlock possibility. We’re a dynamic underwriting and distribution business backed by the strength of Gallagher and powered by a belief that every challenge has a solution. With entrepreneurial energy, niche expertise, and a bold growth mindset, we’re transforming what it means to be an MGA in today’s insurance landscape. Whether you’re shaping new products, solving complex problems, or collaborating across teams, your ideas and initiative will help deliver smarter solutions for our clients—and move the industry forward. Here, agility meets stability. Creativity meets execution. And your career meets real opportunity. At Pen, we champion innovation, value accountability, and thrive on building something better together. If you’re looking to join a team that’s rewriting the future of underwriting, we’d love to hear from you.

Overview

At Pen Underwriting, part of Gallagher, we’re shaping the future of insurance. We’re looking for a Senior Development Underwriter/Manager to join our Construction & Casualty team. Based in the UK, this role focuses on building broker relationships, developing new business, and managing facilities. You’ll have the chance to lead, innovate, and make a real impact in a collaborative and supportive environment.

How you'll make an impact

You’ll lead the charge in developing and delivering our new business plan. By building strong broker relationships, you’ll identify and convert profitable opportunities. You’ll also negotiate and manage facilities, ensuring they align with underwriting discipline and insurer appetite. Acting as a senior market-facing representative, you’ll promote Pen’s Construction & Casualty proposition. Additionally, you’ll underwrite complex risks, provide technical guidance to colleagues, and mentor the team to achieve shared goals.

About You

Here’s what you’ll bring to the role:

• Experience in underwriting Construction and Casualty risks, including complex cases.
• A proven track record of developing and converting new business through broker relationships.
• Strong negotiation and relationship-building skills.
• Knowledge of delegated facilities and portfolio management.
• Commercial awareness and sound judgement in underwriting decisions.
• Leadership skills, with experience mentoring and coaching colleagues.
• IT proficiency and a commitment to personal development.
• CII/Dip CII qualification or progress towards it.

Compensation and benefits

At Gallagher, we believe supporting our colleagues goes far beyond the role itself. For more information, visit our Benefits page.

• Competitive compensation
• Comprehensive benefits programs designed to support your well-being
• Career development opportunities and ongoing learning
• A collaborative, people-first culture with accessible leadership
• The opportunity to do meaningful work with global reach and local impact

At Gallagher, we are dedicated to building an inclusive and authentic workplace.

Although this role is listed as full-time, if you’re in a job-share partnership, work reduced hours, or have any other flexible arrangement

Gallagher is an affirmative action/equal opportunity employer (Minorities/Females/Veterans/Disabled)