Software Engineer (Ruby) πŸ‡«πŸ‡·

  • Paris 10e
  • Full-Time
  • Start Date: 03 January 2022
  • Apply Now



Colonies’ mission is to create tomorrow’s housing experience.

People are progressively adopting new lifestyles as independence, flexibility, community and sharing are becoming key values. Meanwhile, traditional housing offer has not evolved over the past decades and is still complex and inflexible. This is why we set out to bring flexible urban housing, making the most of what careful design, state of the art technology and a bustling community can provide.

Created in Paris in 2017, Colonies designs and operates housing buildings located in large cities.
Our places are fully furnished and equipped, mixing private studios for intimacy and common spaces for sharing. Our offer is all-inclusive to make sure our tenants can focus on what really matters to them. Moving to a new place can be challenging and intimidating, which is why we foster community through regular events and activities.

After raising €41 million with investors such as Idinvest Partners, Global Founders Capital, Kima Ventures and FinanciΓ¨re Saint James, Colonies is accelerating its growth and will start launching developments and operations across Continental European markets with a focus on Germany, Benelux and Switzerland.

Job Description


As a Software Engineer, your role is to help the engineering team to deliver on the strategic roadmap defined by the CTO under his supervision.


  • Individual contribution Ensure the development of new functionalities and the maintenance of the existing codebase.
  • Technical expertise Provide insight and guidance to the team on all technological aspects. Conduct tech research, align choices, share knowledge, etc.
  • Project leadership Lead specific projects, ensure timely delivery, maintain productivity and ambience, report efficiently. Assist the engineering team for optimal delivery of the roadmap.

Please note, that this position implies part-time remote work. Therefore, you will be partially working from home and from our offices in Paris 10 (once the situation related to Covid-19 will be back to normal). Living in France is necessary.

Preferred Experience



  • You have 3 years minimum as a software engineer with Ruby
  • You have an engineer mindset, you understand complexity tradeoffs and can weigh in on decisions
  • You have perspective on technologies, patterns, standards, workflows, work methods and tools
  • You understand the business side of things, you can balance execution and report efficiently
  • You enjoy learning and sharing continuously on all of these subjects
  • Speaking French isn't necessary (we can help your learning if you don't!), but speaking fluent English is.


  • Team-player: our motto is "we succeed together".
  • Seduced by the idea of coliving, and by Colonies' vision and products. Convinced that technology is a central element of our mission.
  • Enthusiastic at the idea of taking on responsibilities for technical decisions in a context of high technical and human stakes
  • Motivated at the idea of working on a long-term physical project that actually improves people lives.
  • Autonomous, organised, able to communicate clearly.

Our stack

  • Rails 6
  • Ruby 2.7
  • PostgreSQL
  • GraphQL
  • Redash

Recruitment Process


  • Send over your CV or your LinkedIn profile
  • If your profile fits, you'll have a chat over the phone with one of us techies, for us to better understand who you are.
  • We'll follow up with an at-home exercise which we'll use as a base for a technical discussion with the tech team. We strive to make our tests relevant (no low-level algorithms or data structures, instead tasks that look like the work you would do with us).
  • If all goes well, you'll have one more meeting with two members of other teams.
  • We'll also have a quick chat with a few of your former coworkers, bosses or teachers.

Additional Information

  • Contract Type: Full-Time
  • Start Date: 03 January 2022
  • Location: Paris, France (75010)
  • Experience: > 3 years
  • Possible partial remote