Lead Backend Engineer @Catalog
Hexa (eFounders)

Hexa (eFounders)

Lead Backend Engineer @Catalog

The company

Hexa (eFounders)

Hexa (eFounders)

  • Incubator / Accelerator, Corporate Support

The job

Lead Backend Engineer @Catalog

This position was filled!

Who are they?

🚀 eFounders is a startup studio, part of Hexa

We partner with talented cofounders to build the future of product-led SaaS.

We pioneered the startup studio model in 2011 and have since launched over 30 companies (7 of them have made exits) with $700M in funding and now reaching a valuation of over $5 billion - including Front, Aircall and Spendesk which recently became unicorns.

Today, over 2,500 employees across the world work in a startup which started out as a simple mockup right here at eFounders.

💬 Who we are. We are passionate builders with one common goal: to build the next generation of SaaS companies. We’re a team of hands-on expert in Product, Design, GTM and more, ready to help founders get their startups off the ground.

⭐ Our companies:  Roundtable • ElbaDotfileSwanCycleFolkUpflowYousign + many other startups and more to come 🚀

We are Catalog

We are on a mission: revolutionizing tomorrow’s B2B transactions worlwide.

B2B is huge (5 times bigger than B2C), B2B is at the center of our everyday lives, B2B employs so many of us - yet B2B trades has not benefited from the major improvements it deserves lately.

We want to address that and unleash the true potential of real B2B heroes (cf. sales & purchase teams) with the most advanced & human centric tool ever created.

We will start with a very specific project: building a B2B focused e-commerce platform.

We have a plan to make it great and we need you to make it real.


Catalog has been founded by an experienced team:

  • Julien, CEO, ex Boston Consulting Group Principal
  • Maxime, CTO, ex Head Of Engineering & ex founder/CTO
Hexa (eFounders)
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Job description

We are looking for a highly skilled Lead Backend Engineer. This is a unique opportunity to join Catalog as the first lead backend engineer and have a huge impact on the product and the technical stack.

You will work closely with our CTO Maxime and the front lead.

You are a technical leader at heart and will support the overall decision-making process as well as the company’s sustained growth.

As Lead Backend Engineer you will:

  • Build our technical stack and ensure software security & reliability
  • Manage the CICD, the cloud infrastructure, the databases and the monitoring system
  • Work hand-in-hand with Maxime & Julien on the product strategy, measure the effort of the various features, anticipate and evaluate the structuring technical choices
  • Develop, deploy and maintain new features
  • You build it, you run it !
  • Ensure code review and knowledge sharing across the team
  • Hire, mentor, and manage a tech team, to allow them to grow and give their full potential
  • Data and IT architecture will have to functionally and technically scale.

Tech Stack

  • Tools: Monorepo (Nx), Github, Copilote etc.
  • App: Next.JS, React, Apollo GraphQL, TypeScript, tailwind
  • API&DB: nodeJS, GraphQL (Nexus), PostgreSQL, Redis, Prisma
  • Cloud: AWS, Amplify, Beanstalk, terraform
  • Testing: Cypress, Jest

Preferred experience

  • You have 7+ years of software engineer experience on full-stack web apps.
  • Experience in managing tech teams.
  • Interest: You have a genuine interest in e-commerce
  • Entrepreneurial mindset: you thrive in fast-paced environments where you have broad responsibilities
  • Ownership mentality: you are a doer and have a bias for action, no task is below you
  • Organization skills: you know how to prioritize and split your tasks efficiently
  • Team player: you enjoy sharing and learning from each other
  • Initiative and innovation: you don’t hesitate to challenge and suggest new practices
  • Product lover: you fully understand what we want to bring to our users, and you are eager to deliver the best possible UX to them
  • Abstraction ability: you are able to step back and rethink our model globally
  • Strong attention to details: code quality is important for you and you set a high bar.


  • Challenging work experience building and owning an ambitious product
  • Quality-driven environment
  • Competitive compensation and equity package
  • Awesome colleagues with high ambitions
  • A strong product and technical culture
  • Lovely offices located in the heart of Paris or in a wonderful region Bordeaux
  • Full Remote position
  • And the opportunity to work in a friendly, young and fun atmosphere!

Hexa is committed to creating a diverse environment. All qualified applicants will receive consideration for employment irrespective of gender, origins, identity, background and orientations.
We are aware there’s a long way to go with regards to diversity in our industry, which is why we encourage all applicants- and especially those listed above- to apply to our open positions.

Hexa (eFounders)
Hexa (eFounders)

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