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Senior Ruby on Rails developer

Comeen · Paris

On-siteSeniorPosted 18 Oct 2026

What this role requires

3 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: Google Workspace, Microsoft 365, Microsoft Graph API, Google APIs, OAuth2, RSpec, CI/CD, Git, Google Cloud Platform, Python, Rust. Worth having, but their absence is not what gets a CV filtered out.

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Job description

We're Comeen, our mission is to create a seamless experience between people and workplaces. 👋

We help 300+ companies worldwide to implement today’s workplace environment with Communication and Workplace Management tools.

We have worldwide customers from fast-growing startups to large enterprises, such as: Veolia, Sanofi or Imerys.

Our SaaS platform is integrated with Google Workspace, Microsoft Teams, Slack, and provides features such as:

Corporate digital signage,

In-office days planning,

Read the full description (36 more sections)

Desk booking,

Meeting room booking,

Visitor check-in.

Comeen has been founded in 2018, and has grown significantly in recent years.

We are a team of 30+ people.

We work from Bordeaux, Paris and Austin.

We've been recently highlighted as Chrome Enterprise Recommended and Recommended for Google Workspace .

We're currently expanding our team, worldwide! 🔥

Tasks

As a Ruby on Rails senior developer, you will join our development team. You will work on our workplace features such as meeting room management and desk booking. Your work will impact thousands of employees worldwide!

Your main responsibilities will be to:

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

Ruby on Rails: 5+ years of professional experience with expert-level knowledge of the framework and its ecosystem (Sidekiq, ActiveRecord, etc.).

Rust and Python : Experience in Python or/and Rust is a plus

Database Management: Strong proficiency in MySQL and Redis, including schema design and query optimization.

API Expertise: Proven experience in building and consuming RESTful APIs, experience on third-party integrations is a plus (Microsoft or Google Workspace API)

DevOps: Familiarity with CI/CD pipelines and Git versioning, experience on Google Cloud Platform is a plus

Benefits

🤓 Great offices in Paris and Bordeaux

💻 Modern tools to be efficient

🍱 Restaurant vouchers with Swile usable everywhere and every day. 10€/days worked, covered at 60%.

⛱ 2 in-person events per year to gather everyone in the same place

🚲 250 euros towards the purchase or repair of a bicycle/electric scooter (Fond de Mobilité Durable)

🏥 Comeen covers 100% of your health insurance

Send your application with as much information as possible (Resume, link to public repositories, details about past RoR projects)

Discovery interview with our head of engineering

Technical written challenge (time-boxed)

Challenge debrief with our Ruby on Rails lead developer

Interview with our CTO

Interview with our CEO

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