We're looking for a Senior Backend Engineer to help build the core systems that price insurance for millions of customers. You'll join our Pricing Team in Amsterdam, where complex analytics meets high-performance engineering. You'll work alongside actuaries to turn their insights into code that scales, from our homegrown domain-specific language to AI-powered research pipelines.
We believe three things matter for every role at Lemonade: drive to push through challenges, efficiency that keeps standards high while moving fast, and adaptability that lets you pivot with data and AI insights. These aren't buzzwords, they're how we actually work.
Our AI-first approach isn't just a tagline either. We're building the future of insurance with AI at the center, and we need people who are genuinely excited to learn and grow alongside these tools.
In this role you'llDesign and build core rating services that calculate prices for products used by millions
Architect systems across TypeScript, Rust, and Python, each solving a different kind of problem
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 where milliseconds shape the customer experience
Partner with actuaries to turn complex mathematical models into scalable code
Lead technical decisions on architecture, interfaces, and design patterns
10+ years of experience building backend systems
Deep experience with system design and architectural decision-making, beyond API development
Strong proficiency in one backend language (TypeScript, Rust, or Python) and the ability to pick up the others quickly
A track record of designing complex systems from scratch, including the interfaces and abstractions
Experience building performance-optimized systems where technical choices directly affect business outcomes
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.
Skills Required
- 10+ years of experience building backend systems
- Deep experience with system design and architectural decision-making beyond API development
- Strong proficiency in at least one backend language: TypeScript, Rust, or Python
- Ability to quickly learn additional backend languages
- Experience designing complex systems from scratch, including interfaces and abstractions
- Experience building performance-optimized systems
- Degree in Computer Science, Engineering, or equivalent experience
- Willingness to work in an office environment most days of the week
- Experience with machine learning and data science pipelines
- Experience with vectorization frameworks such as JAX
Lemonade Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lemonade and has not been reviewed or approved by Lemonade.
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Healthcare Strength — Cigna-administered medical plans provide multiple options (EPO/OAP/OAPIN/HDHP) alongside dental, vision, prescription coverage, disability, and life/AD&D. 2026 plan materials and state notices indicate broad essential health benefits with mainstream networks.
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Retirement Support — A tiered 401(k) match structure is documented, offering meaningful employer contributions when employees save. This complements equity grants/RSUs that are commonly included in total rewards.
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Leave & Time Off Breadth — Employee-reported baselines around defined PTO and company holidays, plus flexible sick time, position time off as a strength. Parental leave is frequently described as generous for the U.S. context, though candidates should confirm current specifics.
Lemonade Insights
What We Do
Our mission is simple: Create the world’s most loved insurance through technology and social impact. As a certified Public Benefit Corporation and B-Corp, Lemonade is constantly challenging how the insurance industry does business. We’re creating an experience that is fast, affordable, and hassle-free across renters, homeowners, pet, life and car insurance. And through our annual Giveback program, in which leftover premiums are donated to charities our customers choose, we’ve donated nearly $5 million to a variety of organizations in need.
Why Work With Us
We’ve set out to make insurance loveable, fast, simple, and socially impactful - words that aren’t often associated with this industry. We’re a Certified B-corp, the only US insurance company to never invest in polluting industries, and our annual Giveback program has donated nearly $5 million globally to nonprofits in need.
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