Senior Backend Engineer for AI-Driven Insurance Platform

hyperexponential; Warszawa; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

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25 days of holiday

£5,000 Learning & Development budget

Mental Health Support

Private Healthcare

Top-spec laptop

Job summary

hyperexponential is seeking a Frontend Engineer embedded in a Product Team to design, build, and maintain user interfaces for hx Renew while shaping the shared component library and design system. You will work with frontend and backend engineers to deliver seamless experiences, contributing to frontend standards and architecture.

The role combines hands-on coding with influence on frontend practices, collaborating across engineering, product, and client-facing teams to enable robust

Qualifications

• Proven experience shipping backend services in Kotlin or Java.
• Ability to design scalable architectures and APIs.
• Experience across backend and frontend in enterprise environments.
• Comfort with AI-assisted coding tools and evaluating their output.

Responsibilities

• Design, build, and operate backend services in Kotlin or Java.
• Shape platform architecture and domain models for underwriting.
• Collaborate across frontend, product, and client-facing teams.
• Deliver high-quality, maintainable code with strong testing.
• Mentor teammates and contribute to coding standards.

Skills

Kotlin/Java backend

Frontend & Backend

System design

AI coding tools

Job description

hyperexponential is seeking a Frontend Engineer embedded in a Product Team to design, build, and maintain user interfaces for hx Renew while shaping the shared component library and design system. You will work with frontend and backend engineers to deliver seamless experiences, contributing to frontend standards and architecture.

The role combines hands-on coding with influence on frontend practices, collaborating across engineering, product, and client-facing teams to enable robust