Underwriting Assistant – Onshore Construction

Location: London

The Underwriting Assistant will support the Natural Resources team in delivering a responsive, high-quality service to brokers and clients for Onshore Construction risks. The role provides essential technical and administrative support across the underwriting lifecycle, helping the team manage a broad Onshore Construction portfolio written through Lloyd's.

Sitting within the wider Natural Resources team, this is an opportunity to build a strong grounding in London Market underwriting while working closely with experienced underwriters, claims colleagues and distribution partners. The team writes a broad portfolio of Oil & Gas, Power, Mining, Infrastructure (including Road, Rail, Tunnels, Bridges and Utilities), Data Centres and Commercial Buildings.

About the job

While there is rarely a typical day, here is a snapshot of the key parts of the role:

• Support the underwriting team with the receipt, triage and accurate recording of new business submissions, endorsements and broker enquiries.
• Prepare underwriting files and risk information for review, ensuring documentation is complete, accurate and stored in line with agreed processes.
• Assist with policy issuance, endorsements, premium and exposure data, routine credit-control and administration queries.
• Maintain clear, timely communication with brokers and internal stakeholders, escalating technical questions or service issues appropriately.
• Support portfolio monitoring, management information and data-quality activity, helping the team make well-informed and timely decisions.
• Work with Underwriting Operations, Claims and other central functions to resolve queries and support a smooth client and broker experience.
• Liaise with the Exposure Management team to model and monitor Natural Catastrophe exposures.
• Develop technical knowledge of Onshore Construction methods, techniques and technologies.
• Help prepare materials for broker meetings, portfolio reviews and internal reporting, and contribute to follow-up actions.
• Form a detailed understanding of Onshore Construction insurance products and the team’s underwriting appetite.

In addition to your key responsibilities

• Conduct your role in accordance with the company's Business Ethics policy and relevant risk, regulatory and legal requirements.
• Handle information sensitively and maintain strong attention to detail, controls and auditability.
• Act as a positive ambassador for the Natural Resources team and MS Amlin in every interaction.
• Look for practical ways to improve processes, data quality and service delivery.

What you'll need

Experience and knowledge

• Experience in a support, operations or related insurance role is desirable, though strong potential and a genuine interest in underwriting will also be considered.
• An interest in construction and engineering projects and the London Market, with a willingness to learn the products, distribution model and technical detail of the portfolio.
• Strong organisational skills, with the ability to manage competing priorities and follow tasks through to completion.
• High level of accuracy and confidence working with data, documents and underwriting systems.
• Clear written and verbal communication, with a service-focused and collaborative approach.
• Good numerical and analytical aptitude, and confidence using Microsoft Office applications, particularly Excel.

What can you expect from us?

As well as a competitive base salary and performance-related discretionary bonus, we offer a broad range of employee benefits. MS Amlin operates a hybrid working model that supports flexibility while valuing the collaboration of working together as a team.

About MS Amlin

MS Amlin is a leading (re)insurer and part of the global MS&AD Group. We support businesses facing complex and demanding risks across Property, Casualty, Marine, Crisis Management, Natural Resources and Reinsurance. Our claims service is guided by TRUST: Transparency, Responsiveness, Understanding, Solution-driven thinking and Technical expertise.

We are stronger together because of our common interests and rich differences. We welcome all talent and want everyone to have the opportunity to influence how our business works.