Senior Backend Engineer, Pricing Platform

The role

You will design and build core rating services and architect systems using TypeScript, Rust, and Python. You will work with actuaries to turn mathematical models into scalable code and build AI-powered research pipelines.

What you will do

• Design and build core rating services that calculate prices for products used by millions
• Architect systems across TypeScript, Rust, and Python
• Build AI-powered research pipelines that help actuaries discover new pricing patterns
• Create SDKs and code patterns that other teams can build on
• Optimize performance-critical systems
• Partner with actuaries to turn complex mathematical models into scalable code
• Lead technical decisions on architecture, interfaces, and design patterns

Required qualifications

• 10+ years of experience building backend systems
• Deep experience with system design and architectural decision-making
• Strong proficiency in one backend language (TypeScript, Rust, or Python)
• Track record of designing complex systems from scratch, including the interfaces and abstractions
• Experience building performance-optimized systems
• A degree in Computer Science, Engineering, or equivalent experience
• Ready to work in an office environment most days of the week

Nice to have

• Experience with ML and Data science pipelines
• Experience with vectorization frameworks like JAX

About the company

Lemonade is building the future of insurance with an AI-first approach.