Job Description

Role Overview

This position is responsible for:

Recruiting a Treaty Reinsurance Broker to integrate into our specialized Japan unit in London.
Collaborating with partners and customers on a diverse range of Japanese Treaty reinsurance portfolios, primarily focusing on Property and various Specialty Lines.
Delivering expert guidance to clients and teammates regarding placement architecture, accessible indemnity and volume, projected costs, prospective policy refinements, and general market evolution.

The role holder will be required to contribute to the creation and presentation of market-facing materials and the formulation of overarching broking tactics. Identifying the most suitable avenues for risk distribution based on customer security protocols and specific needs is essential, utilizing market leverage to obtain optimal terms.

Negotiating the specific clauses and requirements of placements across global hubs—including Bermuda, Singapore, Europe, and the Lloyd’s market—is a core duty. Additionally, the individual must operate strictly within the Aon UK Limited Risk Management Framework and adhere to all corporate compliance mandates and risk management policies.

Regulatory Status

The employee will perform all duties in alignment with the Aon UK Limited Risk Management Framework. They are expected to remain fully compliant with all internal policies, including the proactive management of risks that could impact the reputation or interests of the Group.

Personal Attributes

The role holder will be able to demonstrate the following:

Demonstrated technical proficiency regarding the Reinsurance Market and client requirements.
Exceptional oral and written communication capabilities.
Robust professional networking aptitudes and deep industry insight.
Sophisticated sales and promotional skills.
An inclusive mindset that thrives in a collaborative, trust-based team environment.
A commitment to shaping better decisions that protect and enrich global lives.

Technical Skills

A comprehensive history in treaty reinsurance or broking.
Advanced data evaluation and analytical competencies.
Proficiency in identifying and utilizing global reinsurance capital channels (Treaty, Facultative, Capital Markets).
Japanese linguistic abilities are highly advantageous, although not mandatory.
Knowledge of catastrophe management, actuarial principles, and rating agency advisory.

Control Oversight

The role is responsible for adhering to the below control framework and market changes:

Monitoring market progress and ensuring placements meet client security guidelines.
Executing negotiations across multiple international jurisdictions (Lloyd’s, Europe, Bermuda, Singapore).
Participation in mandatory risk management training and adherence to all Group compliance protocols.
Oversight of placement design to ensure alignment with Aon’s marketing and capital advisory strategies.

Job Data Table

Category	Details
Company Name	Aon Corporation
Location	London, United Kingdom
Locality	City of London
Country	United Kingdom
City	London
Region	Greater London
Job Type	Full-time
Salaries	Competitive (Based on Seniority)
Experience Level	Mid-Senior (Proven Treaty experience)
Travel	Minimal (Market-facing in London/International markets)
Language	English (Required), Japanese (Preferred)
Benefits	2 Global Wellbeing Days, Agile Working, Continuous Learning Culture

Skills & Competency Table

Key Skill	Level
Treaty Reinsurance Broking	Expert
Data Analysis	Advanced
Global Market Negotiation	Expert
Japanese Property & Specialty Lines	Advanced
Client Relationship Management	Expert
Risk Management Framework	Advanced

Salaries Pay Calculator Table

Annual Salary	Bonus	Total Compensation	Notes
£70,000	Performance Based	£85,000+	Typical for mid-level Treaty Brokers.
£95,000	Performance Based	£120,000+	Experienced Broker with Specialty focus.
£130,000+	Performance Based	£170,000+	Senior Broker/London Japan Team Lead.

Job Summary

Join Aon’s market-leading Japan team in London as a Treaty Reinsurance Broker. You will manage Property and Specialty portfolios, advising Japanese clients on placement design and global market capacity. This role involves high-level negotiations across Bermuda, Singapore, and Lloyd’s, requiring strong analytical skills and a background in treaty reinsurance.

5 FAQs

What is “Treaty Reinsurance”? It is an agreement where a reinsurer accepts an entire block of business from an insurer, rather than individual risks.
Is Japanese fluency required? It is preferred due to the client base, but Aon lists it as “not essential” for the right technical candidate.
Which markets will I negotiate with? You will interface with underwriters in London (Lloyd’s), Europe, Singapore, and Bermuda.
What are “Global Wellbeing Days”? These are two extra days off provided by Aon annually for colleagues to focus on their personal well-being.
What asset classes are covered? The focus is on Japanese Property and other Specialty Lines.

Expert Analysis

The London Japan team at Aon sits in a unique cross-cultural corridor. In 2026, the demand for Japanese treaty expertise is surging due to evolving catastrophe modeling for East Asian risks. Brokers who can bridge the gap between conservative Japanese risk appetites and the aggressive capital of the London and Bermuda markets are highly valued.

Location & Logistics Guide

The role is based in the City of London, the primary global hub for reinsurance and capital markets. Proximity to the Lloyd’s building (EC3) is essential for market-facing activities. Aon supports an agile working environment, allowing for a mix of in-office collaboration and remote flexibility. Wikipedia URL:https://en.wikipedia.org/wiki/City_of_London

Career Path

Successful brokers in this team often progress to Senior Treaty Advocate or Client Executive . Given Aon’s global footprint, there are significant opportunities to transition into Catastrophe Modeling , Actuarial Advisory , or leadership roles within the Reinsurance Solutions division, potentially leading to international assignments in Tokyo or Singapore.

To apply for this job please visit jobs.aon.com.