Backend Software Engineer - Senior - (F/M) - Lyon/Paris
LumApps is an Employee Experience Platform that supports companies in their digital transformation on communication, collaboration and engagement of their customers, partners,and above all their employees.
LumApps is a proven leader in this dynamic market with a truly unique vision and product. Our enterprise-grade SaaS platform has been deployed by Fortune 500 clients around the world and is delivering meaningful business benefits. LumApps is identified as a leader in Gartner's Magic Quadrant for Intranet Packaged Solutions as well as in Intranets Forrester Wave. We are also regularly selected for the French Tech Next40/120 program.
Our mission: To make people feel that they belong and have a purpose.
To create an environment where all employees are engaged and work together towards the same goal. Over 700 leading companies trust LumApps to:
🎯 Improve the productivity of their teams with our SaaS-based Collaborative Experience
Platform integrated with both Google and Microsoft collaborative suites,
🎯 Transform employees into real ambassadors of their company,
🎯 Make employees more efficient and better connected to their peers and relevant information, regardless of their location, with the tools and information they need at their fingertips,
🎯Helping companies to reduce turnover, accelerate employee onboarding, better collaborate and share knowledge, and even improve their customer experiences.
With a team of over 600 Lumies spread across 11 offices (Lyon, Paris, Lille, Sophia Antipolis, London, Barcelona, Hamburg, Austin, Tokyo, Zurich and Krakow), LumApps supports large enterprises from all around the world. We are entering an ambitious phase in our company's journey under the impulse of our new shareholder Bridgepoint, aimed at propelling us to become the clear leader in our market and make LumApps shine worldwide in our industry. We are looking for individuals who are excited to actively participate in this transformation.
If these core values sound like you: "be bold, do amazing things", "say what you mean, do what you say", "one team, same mission", "always be evolving": apply now!
Team Introduction
The Social team is a collective of 7 passionate and supportive people:
2 back-end developers
3 front-end developers
1 Product Owner
1 Manager
We work in a collaborative, inclusive, and supportive environment where each team member plays a key role in shaping and evolving our web platform. We value diverse voices and backgrounds and believe that together we build the most innovative and sustainable solutions.
Our Mission
The Social team’s main goal is to help employees connect through dynamic communities and a personalized feed, fostering collaboration and meaningful communication.
Our responsibilities focus on enhancing a community solution: a horizontal, social space for sharing, compared to the more top-down nature of a traditional intranet.
Beyond communities, our work also includes:
Delivering relevant content to users through feeds and streams.
Managing user backups and search history.
We aim to build a product that is useful, accessible, and sustainable—in a team where everyone has the space to express themselves, learn, and contribute.
Our Values
We believe in a team culture where:
Curiosity is encouraged: to learn, share, and experiment.
Commitment is valued: advancing the product, the team, and the company.
Kindness is the norm: we support, listen to, and help each other.
Creativity is stimulated: every problem has a solution, often collective.
Your Role
As a Back-End Developer, you will be an integral part of the team. Your main responsibilities will include:
Contributing to architectural decisions and technical solution design.
Developing and maintaining robust, scalable back-end features.
Designing APIs in close collaboration with the front-end and mobile teams.
Supporting our testing strategy (unit and automated tests).
Taking part in code reviews and continuous improvement of best practices.
Monitoring and improving the performance of our services.
Skills & Experience
We are looking for someone with proven experience in demanding technical environments, capable of delivering end-to-end development and actively contributing to team discussions.
What we expect:
Strong expertise in Python and solid software development fundamentals.
Ability to step back, assess technical challenges, and propose adapted solutions.
Professional proficiency in English (written and spoken).
Strong focus on code quality, testing, and maintainability.
A collaborative, inclusive mindset and a supportive team spirit.
High autonomy in managing tasks and decision-making.
Nice to have:
Experience with cloud technologies (AWS, GCP, Azure).
Familiarity with containers and orchestration tools (Docker, Kubernetes).
Tech Environment
100% SaaS product
Back-end: Python
Front-end: React with TypeScript
Databases: SQL (PostgreSQL) and NoSQL (Google Datastore)
Hosting: Google App Engine & Azure
Choice of operating system
Choice of IDE
💡 Why You’ll Love Working at LumApps
We’re proud to offer a work environment where people feel supported, valued, and empowered. Here’s a peek at what we offer:
🏡 Hybrid work model – 2 days at the office, 3 days remote
🕒 RTT days – ~10 extra days off per year
💳 Meal vouchers (SWILE) + free snacks & coffee
🧘♀️ Yoga classes - Take a mindful break in our Paris office
👶 Supportive parental leave and family moments — yes, even a Christmas party for your kids !
🛡️ Health insurance (ALAN) – 60% covered + full life & disability cover
🎉 Afterworks, team celebrations & seasonal parties
💻 Equipment of your choice
🗣️ French & English lessons, professional development & access to Leeto CSE
We aim to celebrate diversity and are committed to creating an inclusive environment for all employees. We encourage applications from candidates of all backgrounds, identities, and experiences.
- Department
- Engineering EMEA
- Role
- Software Engineer, Backend
- Locations
- Tassin-la-Demi-Lune, Lyon, Paris
- Remote status
- Hybrid

LumApps is...
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A company that has been growing for more than 10 years
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Nearly 400 Lumies worldwide
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More than 700 customers
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Offices in Austin, Paris, Lyon, Lille, Sophia-Antipolis, London, Tokyo, Hamburg and Barcelona
Our greatest pride?
Our talents come from a variety of backgrounds and are passionate about creating a unique, powerful solution that delivers the best possible employee experience.
About LumApps
LumApps is an Employee Experience Platform that helps organizations thrive in a digital environment by connecting and empowering employees with purpose and belonging.
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