Sr Back-end Ruby Engineer at Lago (S21)
€60K - €100K EUR  •  
Open Source Metering and Usage Based Billing
Paris / Remote (FR; PT; GB; NL; ES; IT)
6+ years
About Lago

Lago is the open-source platform that helps engineers build better monetization systems. They enable software teams to build customizable and scalable usage metering, subscription management, billing, invoicing, and payment systems.

Lago is the leader of their category on Github (5k+ stars), won « Product of the month » on ProductHunt, and is used by leading companies such as Mistral, Together, Swan, Juni, Fintecture, JuliaHub, Regate, Flipside Crypto, Unifonic, ,, Sortium.

Lago’s founding team had previously built and scaled the home-grown monetization system of fintech unicorn Qonto from pre-launch to series D.

Our Values

  • Ambition: we aim big, because otherwise, where is the fun?
  • Progress: we care more about the grit, the steep learning curve, the resilience and creativity muscles, than the current status or where you come from.
  • Humble confidence: we know our strengths and always strive for excellence, but we also know there’s so much we don’t know yet
  • Pay it forward: we’ve all started somewhere, people gave us a hand when we needed one, we don’t forget this, and reinforce this positive cycle
  • Not taking ourselves too seriously: we are ambitious, restless learners and hustlers, but at the end of the day, our health (physical and mental), and our loved ones are what matter the most.
About the role
Skills: Ruby

The team and your role

  • This role is based either in-office in Paris in our gorgeous new office in the 10th arrondissement, and/or remote in a timezone that is +2/-2h from CET. Any application outside these criteria will unfortunately be automatically archived.

  • We're a team of 12 today, and we're all about Product, FinTech and Open Source.

  • Our Product is really tech-driven, as we process and structure a lot of data, and build for developers so we have numerous exciting back-end challenges!

Your role includes:

  • Contribute daily to all parts of our code base, using our development workflow
  • Tackle a wide variety of technical problems throughout the stack
  • You will also have to help grow the back-end team

You will also work with out Product Team, and our Front-end Engineers to:

  • Understand customer needs and challenges
  • Come up with technical solutions to create and improve the best features, and our architecture

The person we are looking for

  • Strong knowledge of Ruby (at least 5 years of experience)
  • Experience working with lots of data and event-driven environments
  • A genuine passion for Open-Source: if you’ve contributed to OSS projects or used OSS tools, let us know!
  • Bonus: you’ve worked on billing or tax projects: whether it was to implement a billing system, or maintain it, or integrate it with business tools (e.g., a CRM, Finance tools)
  • A real appetite for the early stages of co-creating a product and shaping Lago's future

Competitive package including equity ; Remote-friendly ; Regular workations, usually by the ☀️🌊🏄‍♀️

About the interview

  • 20-min first call
  • Technical case or pairing
  • Review of the case with the team
  • Offer

What we commit to:

  • Your time is precious, and we'll do our very best to be time-conscious with yours.
  • If you're open to it, we commit to give you the most constructive feedback as possible on your case, as we are aware it's quite an investment of time on your side.
  • We approach recruiting as a 2-way street, we make offers when we have a strong conviction on the mutual fit: in terms of skills, mindset, cultural fit.

Main stack: Ruby

Job type: Full-time only

Location: EU (+2h/-2h from Paris)

Eng type: Backend

Min. experience: +6 years

Remote: Yes. We also have a brand new office in Paris city center!

Learn more how we think and work

  • Back-end: Ruby, Postgres, AWS
  • Front-end: .js, React, GraphQL, Typescript

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