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Lead Backend Developer / Senior Backend Developer

Join Qomon, a growing B-Corp startup focused on citizen-driven organizations and NGOs. As a Lead Backend Developer/Senior Backend Developer, you'll work in our Bordeaux office, collaborating with a diverse team and contributing to meaningful projects. You'll be responsible for software engineering, database engineering, data engineering, product development, DevOps, and client support. Enjoy a dynamic work environment, opportunities for growth, and a chance to make a difference in the world.

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Job summary
Permanent contract
Bordeaux
A few days at home
Salary: Not specified
Starting date: September 30, 2025
Experience: > 3 years
Skills & expertise
Teamwork
Technical aptitude
DevOps principles
Collaboration and teamwork
GitLab
+15
Key missions

Contribuer au développement, aux tests et à l'amélioration des utilitaires, des API et du Backoffice, en mettant l'accent sur la création d'un backend robuste et évolutif.

Collaborer à la conception des nouvelles fonctionnalités, travailler à la mise à l'échelle technologique de notre produit pour gérer des volumes élevés de demandes.

Fournir des conseils techniques basés sur votre expérience aux autres ingénieurs backend de l'équipe, et participer à la formation et au partage des connaissances.

Qomon
Qomon

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Questions and answers about the job

The position

Job description

Are you fascinated by applying Software Engineering to the real world and noble purposes?

Quick disclaimers:

  • We really are into building a diverse, inclusive and authentic workplace! We don’t expect candidates to match and feel at ease with every line of this lengthy job description: if you are excited by the opportunity, we strongly encourage you to apply and we shall see what impactful role we can shape together 🚀

We do believe it’s a one-of-a-kind opportunity

  • You will be taking part in a growing startup (and B-Corp), human-sized, with an experienced staff, supporting entrepreneurial mindsets, ownership, and with a very open / transparent / 0 bullshit company culture.

  • We are committed to a challenging, diverse and meaningful sector: citizen-driven organizations, NGOs, movements, campaigns, etc. all over the World.

  • We are closely collaborating with a wide range of citizen-focused actors and organizations in France and in 70+ countries.

Team: Tech / Product

The role is based out of our Bordeaux office, where most of the tech team and are CTO are located 🍷.

We use a mix of French and English when we work, as we’re fortunate to have international team members! Professional English is essential.

We have a strong team spirit, it is composed of individuals with a diverse set of expertise, backgrounds and motivations which makes things interesting! 🔥

To be clear upfront, not all processes are set in stone yet and we are regularly challenging our organization / scopes / etc.

The current situation is that the product team works on 4-weeks cycles and we do quick written dailies to understand everyone’s progress and challenges.

In terms of general tooling we are using Gitlab, Slack, Linear & Notion.

The backend stack

Here is a bit of name-dropping regarding our stack in the backend: Golang, Microservices, PostgreSQL, ElasticSearch, KrakenD, RabbitMq, Metabase, Dagster, etc.

More infra related: Docker, Docker Compose, Kubernetes, Ansible, Terraform, Monitoring (Telegraf + Influxdb + Grafana, Zabbix)

The infra stack is shared, extended & owned by all the tech team (Backend, Frontend & Data).

As a Backend Developer, you may contribute to several areas:

  • Software engineering: Develop, test, improve our utils, APIs & Backoffice, with a focus on building a robust and scalable backend

  • Database engineering: tune database models / requests / configuration

  • Data Engineering: automation & plumbing between systems with a strong emphasis on data integrity and security

  • Product Development: collaborate on the design of next features

  • DevOps: work on CI/CD, monitoring, etc.

  • Lead: provide technical guidance based on your experience to other backend engineers on the team

  • Client Support: help our CSM / AE team into finding the right solutions for our clients & prospects

Your future objectives

Here is a subset of your future objectives:

  • Implement the backend side of new features

  • Work on making our product more technologically scalable to handle high volumes of requests

  • Take part in creating the Product roadmap

  • Obviously, enjoy doing the tasks of the roadmaps ;)

  • Contribute to the company processes and discussions

  • Upskill other engineers through trainings and knowledge sharing

  • Get fully familiar with the whole backend projects / architecture @Qomon

Our culture

We believe you’re joining us because you’re excited to work in a dynamic and impactful sector, motivated to make a difference in the world. At Qomon, we value responsibility and ownership—empowering you to take charge of your areas and make meaningful contributions.

What we have to offer 🎁

  • 🏢 Based in our Bordeaux office “Darwin”

  • 🫂 Take part in a small team with a huge ambition

  • 🔥 Freedom to act and to develop your skills within an experienced & growing team

  • 📱 Product first team with huge ambitions in an incredible momentum

  • 🚄 Regular team offsites every quarter to stay trained and aligned (but also have fun) (les “100 jours”)

  • Once a month, we organize a event (internal) called Goutech, which is a meetup for the tech side to share some new tech, new patterns, etc..

  • 🚉 50% coverage of your transport tickets

  • ⚕️ The highest-level of Alan health coverage 90% supported by Qomon

  • 💻 A computer, and what you need to work

  • 🏖️ Perks & Benefits (CE)

  • 🅱️ Qomon is certified B-corp. Certified B Corporations are a new kind of business that balances purpose and profit.


Preferred experience

  • You are or feel ready to write production backend code — preferably in Golang (nice-to-have but not required to apply),

  • Proficient & passionate about backend development, ready to take new challenges,

  • Able to autonomously & rigorously deliver new features,

  • You have a professional level of English (>= B2 in Reading / Writing / Speaking, C1 preferred),

  • Flexible enough for the evolving nature of a startup & rigorous enough for working with complex systems,

  • Ability to finish things,

  • Interested in taking part in both BUILD & RUN, and not afraid of dealing with a bit of legacy code (of course we have some, who doesn’t?),

  • (bonus) Interest in citizen-driven organizations and/or Fintech industry.


Recruitment process

Subject to changes.

  • A brief 20/30 minutes screening call with Nicolas (Backend Lead @Qomon) to understand your motivation and the role & quick technical discussions

  • 1 hour interview: Qomon demo + code base / architecture tour + discussion on some code you wrote + frontend oriented discussion with other backend members

  • 30 minutes chat with Jean-Baptiste (CTO), and opportunity to meet the Bordeaux or Paris team IRL ☕️

  • Final call abour our culture and values with Eleonore (COO)

Want to know more?