Full Stack Engineer

Willis Re Inc; New York (NY); On-site; USD 180,000 - 220,000; Full time

Benefits offered by this job

Health and welfare benefits

401(k) savings plan

Paid time off

Job summary

WillisRe is recruiting a Senior Full Stack Engineer to build and own end-to-end features across APIs, services, and responsive UIs. You will craft cloud-native applications on Azure, surface data for brokers and analysts, and develop AI-enabled capabilities using retrieval-augmented generation and API integrations.

The role emphasizes strong backend with C#/.NET or Python, frontend skills in React/Angular, and expertise in Azure DevOps or GitHub Actions, Terraform, and secure coding.

Qualifications

• 10+ years of professional software engineering experience shipping and maintaining production systems end-to-end.
• Experience in insurance, reinsurance, or financial services is desirable.
• Strong backend skills in C#/.NET or Python, API design, and SQL.
• Proficiency with modern front-end frameworks (React or Angular) and TypeScript.
• Hands-on experience with Azure, CI/CD (AzureDevOps or GitHubActions), and Terraform.
• Knowledge of microservices, event-driven, and API-led design; security fundamentals (OAuth2.0, OIDC, EntraID, RBAC).
• Strong SQL performance awareness and relational database experience.
• Experience or strong interest in LLM-based AI solutions, agentic patterns, prompt design, and evaluation.
• Fluency in test-driven development, automated testing, clean design, and judgement about keeping things simple.
• Excellent communication skills for explaining technical trade-offs to product stakeholders and delivery partners.

Responsibilities

• Design, build, and ship end-to-end features from APIs and services to responsive user interfaces.
• Develop and run cloud-native applications on Microsoft Azure using PaaS, containers, and infrastructure-as-code.
• Consume data through APIs to surface it in performant ways for brokers and analysts.
• Build AI-enabled product features using retrieval-augmented generation, tool and API integration, evaluation, and human-in-the-loop design.
• Use and promote AI-assistant engineering tools such as ClaudeCode or ClaudeCowork.
• Integrate with external market platforms, carrier- and client-systems, and SaaS products via API-first and event-driven patterns.
• Apply test-driven development and secure-coding practices, including authentication, authorisation (EntraID, OAuth2.0), data protection, and privacy.
• Collaborate on architectural standards, participate in design discussions, review code, and mentor teammates in a green-field environment.

Skills

C#/.NET

Python

API design

SQL

React

Angular

TypeScript

Azure

CI/CD

Security fundamentals

LLM AI experience

Test-driven development

Communication skills

Tools

Azure DevOps

GitHub Actions

Terraform

React

Angular

TypeScript

Job description

Full Stack Engineer – WillisRe

WillisRe is building its global technology estate from the ground up, unencumbered by legacy. We are looking for a Full Stack Engineer to build the products that power our reinsurance broking, analytics, and client‑facing platforms. This is a hands‑on engineering role for someone who enjoys working across the whole stack and is equally comfortable building conventional services and AI‑enabled features.

Responsibilities

• Design, build, and ship end‑to‑end features from APIs and services to responsive user interfaces.
• Develop and run cloud‑native applications on Microsoft Azure using PaaS, containers, and infrastructure‑as‑code.
• Consume data through APIs to surface it in performant ways for brokers and analysts.
• Build AI‑enabled product features using retrieval‑augmented generation, tool and API integration, evaluation, and human‑in‑the‑loop design.
• Use and promote AI‑assistant engineering tools such as ClaudeCode or ClaudeCowork.
• Integrate with external market platforms, carrier‑ and client‑systems, and SaaS products via API‑first and event‑driven patterns.
• Apply test‑driven development and secure‑coding practices, including authentication, authorisation (EntraID, OAuth2.0), data protection, and privacy.
• Collaborate on architectural standards, participate in design discussions, review code, and mentor teammates in a green‑field environment.

Qualifications

• 10+ years of professional software engineering experience, shipping and maintaining production systems end‑to‑end.
• Experience in insurance, reinsurance, or financial services is desirable.
• Strong backend skills in C#/.NET or Python, API design, and SQL.
• Proficiency with modern front‑end frameworks (React or Angular) and TypeScript.
• Hands‑on experience with Azure, CI/CD (AzureDevOps or GitHubActions), and Terraform.
• Knowledge of microservices, event‑driven, and API‑led design; security fundamentals (OAuth2.0, OIDC, EntraID, RBAC).
• Strong SQL performance awareness and relational database experience.
• Experience or strong interest in LLM‑based AI solutions, agentic patterns, prompt design, and evaluation.
• Fluency in test‑driven development, automated testing, clean design, and judgement about keeping things simple.
• Excellent communication skills for explaining technical trade‑offs to product stakeholders and delivery partners.

Compensation

$180,000–$220,000+20% bonus

Benefits

Health and welfare benefits, paid time off, 401(k) savings and other retirement programs, employee assistance programs.

Equal‑Opportunity Mandate

We provide equal opportunity to all qualified individuals regardless of race, colour, religion, age, gender, gender expression, national origin, veteran status, disability, orientation, or any other legally protected category.

About WillisRe

WillisRe combines specialist broking with analytics, modelling and research to help insurers optimise risk transfer, strengthen balance sheets and achieve sustainable growth. Our approach is relationship‑driven, transparent and outcome‑focused. At the heart of WillisRe lies a focus on delivering the most cutting‑edge analytical solutions to enable better decision‑making for risk selection, portfolio optimisation and capital management.