Staff Rails Engineer - Engineering

Altertable; Paris; Sur place; EUR 70 000 - 90 000; Plein temps

Avantages offerts par ce poste

30+ days of paid vacation

5,000€ budget for equipment

50% commute cost coverage

Daily meal vouchers

Comprehensive health insurance

Learning and development incentives

Sustainability practices support

Résumé du poste

A dynamic tech company is seeking a Staff Backend Engineer to own and scale the Ruby on Rails layer of their AI-native data platform. The ideal candidate will have over 7 years of backend engineering experience, specifically in B2B SaaS and Ruby on Rails. Responsibilities include building core product features, enhancing API design, and collaborating with frontend teams. This role offers hybrid work, equity incentives, and ample time off.

Qualifications

• 7+ years of backend engineering experience with deep experience in Ruby on Rails.
• Strong track record building B2B SaaS products with complex dashboards.
• Deep understanding of PostgreSQL including migrations and data integrity.
• Hands-on experience designing and operating APIs at scale.
• Solid knowledge of authentication systems like OAuth, SSO.
• Strong grasp of system design and architectural trade-offs.
• Experience with multi-tenant SaaS architectures.
• Familiarity with event-driven systems and background job processing.

Responsabilités

• Own the Rails backend powering the B2B SaaS product.
• Design and evolve a clean, expressive GraphQL API.
• Build robust systems for authentication and billing.
• Partner with frontend engineers for quality dashboards.
• Ensure performance and correctness of PostgreSQL data models.
• Make architectural decisions balancing product velocity and scalability.
• Shape engineering culture and mentor team members.
• Act as a technical owner for large product areas.

Connaissances

Backend engineering experience

Ruby on Rails

B2B SaaS products

PostgreSQL

API design

Authentication and authorization systems

System design

Multi-tenant SaaS architectures

Frontend collaboration

Event-driven systems

Description du poste

We're looking for a Staff Backend Engineer to own and scale theRuby on Rails layer of our AI-native data platform.You'll be responsible for the core B2B SaaS experience: dashboards,APIs, auth, permissions, and the product surface that both humansand AI agents rely on every day.

Requirements

7+ years of backend engineering experience , with deep experience in Ruby on Rails

Strong track record building B2B SaaS products with complex dashboards and workflows

Deep understanding of PostgreSQL (schema design, migrations, performance, data integrity)

Hands-on experience designing and operating APIs at scale

Solid knowledge of authentication & authorization systems (OAuth, SSO, permissions)

Strong grasp of system design , API boundaries, and long-term architectural trade-offs

Product-minded, autonomous, and comfortable operating with high ownership and ambiguity

Experience with multi-tenant SaaS architectures

Built or maintained design-system-backed dashboards used by technical and non-technical users

Familiarity with event-driven systems and background job processing (Sidekiq, Faktory, etc.)

Experience working closely with frontend teams (React, GraphQL clients)

Exposure to AI-powered features or systems used by automated agents

Responsibilities

Own the Rails backend powering our B2B SaaS product and internal APIs

Design and evolve a clean, expressive GraphQL API used by both the web app and AI agents

Build robust systems for auth, permissions, organizations, billing, and environments

Partner with frontend engineers to deliver high-quality dashboards and workflows

Ensure correctness, performance, and maintainability of our Postgres data models

Make architectural decisions that balance product velocity and long-term scalability

Shape engineering culture, raise the bar on code quality, and mentor others

Act as a technical owner for large product areas, from conception to production

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Hybrid Remote Work

Work from home and in our beautiful Paris office.

Equity

Incentivized for long-term success.

Time Off

30+ days of paid vacation a year.

5,000€ budget for MacBook Pro (or equivalent) and accessories.

Transportation Reimbursement

50% of your commute costs covered.

Daily meal vouchers to enjoy lunch.

Health Insurance

All-in-one health insurance through Alan.

Learning & Development

Sustainability

Incentives for eco-friendly commuting and sustainable practices.

Funding Announcement

We're excited to announce our latest funding round with leading investors supporting our mission.

The stack is broken: slow, fragmented, reactive. Our manifesto is a call to wake it up. It's time for data that works like your best teammate: always on, always thinking, always ready to help.