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LumApps Logo LumApps · IT - Software Development

Senior Ruby on Rails Software Engineer

France, Paris Employment contract · Job Posted June 28, 2026
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Job Description

LumApps is now more than just an Employee Experience Platform — it is an AI-powered Employee Hub that supports companies in their digital transformation of communication, collaboration, and engagement with their customers, partners, and above all their employees. Our platform is a proven leader in this dynamic market with a truly unique vision and product. It 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, and regularly selected for the French Tech Next40/120 program. In 2025, LumApps strengthened its leadership position by partnering with Beekeeper, a pioneer in frontline employee experience solutions. This strategic collaboration expands our reach and impact across all types of workers — from HQ to the frontline. 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.

Job Responsibility

  • Backend Engineering: Design, build, and maintain efficient, reusable, and reliable Ruby code within the Ruby on Rails framework
  • Ecosystem Integration: Develop and optimize complex integrations with Google Workspace and Microsoft 365 suites (utilizing Microsoft Graph API, Google APIs, OAuth2 flows)
  • Architecture & Scalability: Lead architectural decisions to ensure system performance, security, and scalability as our user base grows
  • Code Quality: Uphold high engineering standards through rigorous testing (RSpec), comprehensive code reviews
  • Technical Leadership: Provide mentorship to junior developers and contribute to the continuous improvement of our development processes and documentation

Requirements

  • 5+ years of professional experience with expert-level knowledge of Ruby on Rails framework and its ecosystem (Sidekiq, ActiveRecord, etc.)
  • Strong proficiency in MySQL and Redis, including schema design and query optimization
  • Proven experience in building and consuming RESTful APIs

Nice to have

  • Experience in Python or/and Rust
  • Experience on third-party integrations (Microsoft or Google Workspace API)
  • Experience on Google Cloud Platform

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
  • Supportive parental leave and family moments
  • 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
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