Senior Back-end Ruby Engineer

Lago; Paris; Sur place; EUR 70 000 - 110 000; Plein temps

Avantages offerts par ce poste

Equity

Remote-friendly

Paris office

Résumé du poste

Lago in Paris city centre is looking for a backend engineer with strong Ruby skills to drive data‑intensive features and robust back‑end solutions. You will collaborate with Product and Front‑end teams to understand customer needs and design scalable architectures.

Join a team embracing Open Source, equity, and remote-friendly work while shaping Lago's future in the fintech space.

Qualifications

• Strong knowledge of Ruby.
• Experience with large data and event-driven environments.
• Genuine passion for Open-Source and OSS tooling.
• Bonus: experience with billing or tax projects (CRM/Finance integrations).
• Interest in early product co-creation and Lago's future.

Responsabilités

• Contribute daily to all parts of the codebase using our workflow.
• Tackle a wide range of technical problems across the stack.
• Help grow the back-end team and collaborate with Product and Front-end teams.

Connaissances

Ruby

Data-driven

Open Source

Billing/Tax (bonus)

Product co-creation

Description du poste

THE TEAM AND YOUR ROLE- We're a team of 35 today, and we're all about Product, FinTech, and Open Source.- Our Product is tech-driven. We process and structure tons of data and build for developers, which brings 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 teamYou will also work with our 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 architectureTHE PERSON WE ARE LOOKING FOR- Strong knowledge of Ruby- 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 futureCompetitive 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- OfferWhat 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 fitOUR 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.Main stack: RubyJob type: Full-time onlyEng type: BackendMin. experience: 5/6 yearsRemote: Yes. We also have a brand new office in the Paris city centre!

Requirements

• Strong knowledge of Ruby
• 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

Tech stack

• Ruby
• fintech
• Open Source
• Ruby on Rails