Full-Stack Engineer (TypeScript, React, Node.js)

Waro is looking for a lead full-stack developer to join its tech team starting in September 2026.

Permanent Contract
Paris
Occasional telework permitted
Salary: €55k–€70k
Experience: 3+ years

Your Responsibilities

  • Design and implement new features to enhance the platform and the user experience
  • Evolve the application architecture to support its growth and address scalability challenges
  • Tackling a variety of technical challenges: automated data collection, impact calculation engine, dashboard, eco-design simulation, user experience, etc.
  • Work closely with the product team to understand business challenges and propose the best technical solutions
  • Ensure code quality and performance : clean code, security, testing, code reviews, bug fixes, etc.

To better understand how we operate and our tech stack, feel free to check out our tech showcase.

Desired Qualifications

  • You have more than 3 years of experience in full-stack development
  • You are a graduate ofan engineering school
  • You value code quality and maintainability: DX, clean code, tests, documentation, continuous improvement…
  • Do you enjoy understanding product and business challenges in order to design appropriate technical solutions?
  • You care about environmental issues and want to give your work meaning by contributing to a project that makes a positive impact
  • Bonus: You're comfortable working with our tech stack (TypeScript, React, Node.js)

What We Offer You in Return

  • A role that has a tangible impact on the product and the platform's architectural decisions, with opportunities to advance to a lead developer role
  • A work environment on a human scale, with a genuine culture of collaboration, quality, and rigor
  • The satisfaction of putting your technical and interpersonal skills to work toward a meaningful mission: making environmental impact a central consideration in the decisions of brands and consumers
  • Awesome teammates to share Ap’Waro 🍺, War’eminars 🏖️, and other fun get-togethers with (no pressure)
  • Offices in the heart of the 11th arrondissement, featuring a gym and a ping-pong table

Interview Process

To ensure that your goals align with Waro’s needs, you’ll have:

  • A 30-minute call with Alexandre, Waro’s CTO, to get to know each other and see if what you’re looking for aligns with what Waro is looking for
  • A 1-hour technical interview with the technical team
  • A Q&A session with the four founders where you can ask any questions you still have about Waro and get to know our team a little better

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The Team

Who you'll be working with at
.

Four teams, four co-founders who are still here and continue to do the work day in and day out. No middle management—we’re still in that rare phase where everyone really knows each other.

Tech & Products
Building the platform
Modern tech stack, code quality is non-negotiable, 2-week sprints. Developers are involved in the design from the very beginning—not at the end of the process.
Alexandre, CTO
Alexandre CTO & Co-founder
Customer Success
Supporting our clients
From onboarding to the day-to-day management of client projects. Waro’s flagship team, directly responsible for the exceptionally high satisfaction rate.
Adrien, CPO
Adrien CPO & Co-founder
Sales
Market Waro
From the first contact to the closing. The entire sales cycle, in perfect synergy with marketing. We sell something we believe in—and that makes all the difference.
Michel, Head of Sales
Michel Head of Sales & Co-founder
Marketing
Spread the word about Waro
Generate leads, build brand awareness, and create content that makes a difference. Working hand in hand with Sales, from start to finish.
Paul, CEO
Paul CEO & Co-founder