Assistant Underwriter - Multiline in City of London

At Carbon, we’re delegating differently by combining our strong insurance expertise with cutting edge technology. As we rapidly scale globally, and continue to advance Graphene, our proprietary owned data ecosystem, we remain guided by our core pillars of People, Partnerships and Innovation. If you want to join an exciting business powered by the latest technology, and are energised by collaboration, big ideas and making a meaningful impact to our partners, then this role is for you.

Founded in 2018, Carbon’s mission is to transform delegated underwriting and raise the standard for the industry. Our open underwriting model connects data, insight and people to enable stronger decisions and more dynamic portfolio management, bringing greater transparency, clarity and confidence to our partners and to the way the whole market works. We’re proud to have been recognised by The Sunday Times as a Best Place to Work in both 2024 and 2025, reflecting our warm, inclusive culture and our energetic, entrepreneurial spirit. Our friendly, modern offices foster creativity and connection, while our partnership with Google Cloud demonstrates our commitment to innovation and technology at the highest level.

At Carbon, our values shape who we are every day: Win as one, Keep spirits high, Blaze a trail, Speak up, listen up. If you’re looking to join a modern team with bold ambitions and real momentum, we’d love to meet you.

Location: 5th Floor, 9A Devonshire Square, London, EC2M 4YN

Start date: Immediate

Role type: Permanent, full-time, hybrid (in the office 3 days a week)

Reporting into: Head of Multiline Underwriting

The Role:

• Our multiline team is an integral and growing part of Carbon and handles a variety of deals generally involving multiple lines of business and large client relationships.
• Monitor and analyse complex underlying books of business alongside our Pricing Actuaries, Quantitative Engineers, identifying and acting upon trends.
• Support the team across a variety of areas including new business development, underwriting renewal accounts, building and maintaining broker relationships, and responding to underwriter/broker queries.
• Independently handle and assess underwriting referrals/special acceptances from Coverholders.
• Work with underwriters in triaging new business opportunities, including evaluating and analysis of historical data, evaluation of coverage forms and compiling and presenting business plans.
• Prepare, analyse and present binding authorities for renewal.
• Undertake ongoing oversight tasks, including file audits, data oversight and bordereaux review to ensure compliance with binding authority requirements.
• Attend and contribute to regular coverholder and broker meetings.
• Support the Underwriters with effective and efficient administration skills.
• Assist with the preparation and delivery of internal and external presentations on products, key trends and emerging exposures.
• Work across wider company functions to source information when necessary.
• Liaise with brokers and other key partners to develop business relationships.
• Assist with the production of presentations and marketing literature as required.
• Develop familiarity with multiple lines of business at both macro and micro level.
• Undertake any other reasonable duties as may be requested.

Your Skills and Experience:

• Prior experience in one of more of the following lines (Property, Casualty, Financial Lines, Specialty or Healthcare) preferred.
• Strong administration and communication skills.
• Highly proactive and a self-starter able to use own initiative to help the book run efficiently.
• Tenacious in solving issues and obtaining data and responses from external and internal stakeholders.
• A practical understanding and ability to analyse risk, pricing, contract wordings, and claims.
• Highly organised, with the ability to work to deadlines and effectively prioritise.
• Good numerical and analytical skills.
• Good working knowledge of MS Office, especially Excel.
• Ability to work alone but also contribute as part of a team.