Senior Full-Stack Engineer (Full-Time – Paris or Hybrid - €60-70k)

Fairglow; Paris; Hybride; EUR 60 000 - 70 000; Plein temps

Résumé du poste

An innovative climate tech startup in Paris seeks a Senior Full-Stack Engineer to lead product development with a focus on sustainability. This role involves re-architecting applications, developing features, and collaborating with a dedicated team. The ideal candidate has over 5 years of full-stack experience and is passionate about making a real-world impact. Competitive salary and hybrid working options are offered.

Prestations

Great health insurance

Meal vouchers

50% coverage of transport pass

New MacBook Pro

Team-building events

Qualifications

• 5+ years of full-stack development experience.
• Strong front-end experience with TypeScript and React.
• Experience managing or working with offshore development teams.

Responsabilités

• Re-architect core apps with an AI-native approach.
• Develop frontend & backend features.
• Manage offshore contractors and ensure product stability.

Connaissances

Full-stack development experience

Fluent English

Front-end experience with TypeScript

Backend experience with Python

Experience with offshore teams

Experience in startups

Interest in sustainability

Outils

TypeScript

React

Python

Google Cloud

Description du poste

Overview

Join Fairglow as a Senior Full-Stack Engineer (Full-Time – Paris or Hybrid - €60-70k)

If you’re ready to build for real impact, come lay the foundations with us.

What is Fairglow?

Fairglow is a Franco-American startup based in Paris and Los Angeles, at the crossroads of technology and sustainability.

Our mission: equip cosmetic brands and manufacturers with powerful digital tools to measure, reduce, and manage their environmental impact.

We currently work with committed players in the cosmetics industry, providing a SaaS suite that includes:

• Automated carbon footprint analysis
• Interactive sustainability dashboards
• AI-powered action plans
• Intuitive workflows for managing impact

Our ambition: to become the global B2B reference in climate tech for chemical products

Market: 100% B2B – currently focused on cosmetics, expanding soon.

Who you’ll be working with

You’ll collaborate closely with:

• Daniel, Co-Founder & CTO (the person you will collaborate the most)
• Jason, Co-Founder & CDO
• Evan, Co-Founder & CPO
• Quentin, Co-Founder & CEO

What you’ll do

You’ll play a key role in our product’s next evolution:

• Re-architect core apps with an AI-native approach
• Develop frontend & backend features
• Manage offshore contractors (task assignment, reviews, QA)
• Help define scalable engineering workflows
• Handle urgent technical issues and ensure product stability

Tech stack: Typescript / Python / PostgreSQL / ElasticSearch / Google Cloud

You’re a great fit if you:

• Have 5+ years of full-stack development experience
• Know how to architect products, not just ship features
• Have worked in startups or small, fast-paced teams
• Thrive in ambiguity and love bringing structure to chaos
• Are fully fluent in English (written and spoken), French is a plus
• Want to build a product that has real-world impact

Probably not the right fit if you:

• Have only worked in large, structured teams
• Need rigid processes to function
• Prioritize perfect code over shipping
• Don’t feel confident communicating in English
• Aren’t interested in sustainability or environmental topics

Why join us?

• Be a key player in our strategic tech transformation
• Build everything: stack, tools, process, team
• Join a kind but ambitious culture, focused on meaningful work
• Work in Paris or remotely
• Competitive salary + equity as an early employee

Growth paths

• VP Engineering – team leadership & process structuring
• Chief Architect – product scalability & deep tech excellence

Practical Information

• Contract: Permanent (CDI)
• Salary: €60-70K + bonus depending on profile and experience
• When: ASAP
• Where: Offices in the 11th arrondissement of Paris
• Perks: Great health insurance (Alan), meal vouchers, 50% coverage of the Navigo transportation pass, a brand-new MacBook Pro, and plenty of afterwork events and solid team-building sessions.

Hiring process - max 2 weeks

1. Intro call (30 min)
2. Small project or live code review
3. Technical interview with Daniel
4. Culture interview with Jason, Evan & Quentin
5. Offer

• 5+ years of experience in full-stack development
• Strong front-end experience with TypeScript and React
• Comfortable building and maintaining backend systems in Python (FastAPI or similar)
• Experience managing or working with offshore development teams
• Familiarity with AI-assisted development tools and workflows
• Pragmatic problem-solver who balances clean code with delivery
• Passionate about sustainability, climate tech, or purpose-driven software
• Fluent in English; French is a strong plus