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Backend Developer in Paris


50,000 - €65,000
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Job Description

eFounders is a startup Studio.

Together with entrepreneurs, we turn unique ideas into successful companies.

Our motto? We build the future of work!

What we live for? We unleash the entrepreneurial potential of our founders!

Our pride? The 500+ employees across the world who currently work in a startup which started out as a simple mockup right here at eFounders.

Our companies? Mailjet • Textmaster • Mention • Front • Aircall • Hivy • Spendesk • Illustrio • Forest • Slite • Station • Upflow • Equify • Briq

We have new Saas projects in the making : Zenvest • Multis • Bonjour • Swan and many more to come 🚀

About Swan, the Do It Yourself banking platform

We have started Swan 9 months ago, with the ambition to become the next-gen banking-as-a-service. Similarly to the revolution brought by Stripe a few years ago in card acquisition, we want to bring the same level of disruption and time to market to the existing market which are powered by the likes of Wirecard, Treezor, Bankable, etc.

Swan is a banking-as-a-service (Baas). With an emoney license, Swan will offer bank accounts, cards, IBANS, transfers in white label through its APIs.


We’re building a highly resilient, fast and strongly secured banking platform
The project started a few month ago, we are already 8. You will join the core team taking on a massive product and engineering challenge. We will grow in the next 12 months to reach 20 people.
We think big - Day 1 we will serve all the Europe, next to the infinity and beyond.
We're the new startup out of eFounders. Collectively, eFounders' startups raised over $120M in 2018

Our Stack

Languages & Tools : Scala, Akka, Kafka, Cassandra, PostgreSQL, TypeScript, Node.js, GraphQL
Methodologies: DDD, Clean code, automatic testing, functional programming, static typing
Cloud : AWS, Container orchestration, Lambda, Gateway, Message broker
CI/CD: Gitlab, Docker
And many many more ...

What you will do

Lead your projects from concept to completion.
Build and improve code across the entire stack. Quality is not a tradeoff!
Ship features and measure impact on usage every week.
How to build a financial security level application
Contribute to building our engineering team: participate in technical reviews, architecture, design systems..



You’re a team player, a problem solver and a product builder.
You have 5+ years experience working with robust distributed back-end service.
You’re knowledgeable about Node.js and development methodology, process, and tooling
Bonus: You have knowledges about DDD and event based architecture


A challenging work experience building a product and a team from scratch with the ambition to become the worldwide leader.
Strong technical culture.
Competitive salary.
Latest Macbook pro.
Lovely offices, with a 360° view on Paris, located in the heart of the startup ecosystem.
Free subscription to gym usable anytime as much as you want
Lunchr card, discount on FoodChéri, Frigo Nu

About Swan

  • Fintech

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