Senior Full-Stack Engineer: Kotlin/React, AI, Hybrid Paris

sunday

United States

Hybrid

USD 101,000 - 135,000

Full time

7 days ago

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Benefits offered by this job

Stock options

Unlimited PTO

Hybrid Paris offices

Health insurance for family

Job summary

sunday is seeking a Senior Software Engineer to design and deliver high-impact full-stack features, from Kotlin backend services to React frontend experiences, while accelerating the way we build software through AI agents. You will report to Nicolas and join the Tech team, taking ownership of complex technical challenges, architecture decisions, and production readiness to support high-load services.

The role includes stock options, unlimited PTO, hybrid Paris offices, 50% public transit

Qualifications

Several years of full-stack development with Kotlin on the backend and React on the frontend.
Proven experience deploying and operating high-load services in production.
Hands-on experience with AI agents or AI-assisted development tools.

Responsibilities

Design and deliver high-quality full-stack features from Kotlin backends to React frontends.
Write code using AI agents and help build an AI-assisted software factory.
Own complex topics around software design, architecture, and service reliability.
Design scalable production-ready solutions.
Improve development practices and team efficiency through AI-assisted approaches.
Make pragmatic technical decisions considering business impact and speed.
Share standards and convictions to help the team grow.