Senior Full-Stack Engineer — Climate Tech & AI

Rainbow Standard; Paris; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Competitive salary

Stock options

Office at Climate House, Paris

Startup culture

High responsibility and impact

Work-life balance

Job summary

Rainbow seeks a senior full-stack engineer to join its Product & Tech team in Paris. You will own features from problem to production, build data models, APIs, and AI-assisted workflows, and contribute to a carbon-aware platform.

You will work closely with climate and certification teams, shipping AI-enabled capabilities while maintaining code quality and scalable architecture in a startup environment.

Qualifications

• 7+ years of experience as a full-stack engineer, backend-leaning.
• Graduated from an engineering school with solid fundamentals.
• Comfortable with ownership, ambiguity and startup tradeoffs.
• Builds for customer needs beyond the ticket.
• Daily user of AI coding tools; building AI features is a plus.
• Familiar with TypeScript, Node.js, React; Python is a plus.
• Fluent in English; French is a plus.

Responsibilities

• Design & implement features end to end: data models, APIs, calculation logic.
• Ship the matching front-end where needed.
• Talk to users and turn their needs into product decisions.
• Raise the bar on code quality, architecture and AI-assisted workflows.

Skills

TypeScript

Node.js

React

Python

AI features

APIs

Data modeling

Frontend development

Ownership

English fluency

Education

Engineering degree

Job description

Rainbow seeks a senior full-stack engineer to join its Product & Tech team in Paris. You will own features from problem to production, build data models, APIs, and AI-assisted workflows, and contribute to a carbon-aware platform.

You will work closely with climate and certification teams, shipping AI-enabled capabilities while maintaining code quality and scalable architecture in a startup environment.