Ruby Engineer

Remote | Full-Time / Long-Term Contract(B2B) | 60KEuros–90KEuros

Our client is scaling at an extraordinary pace and is building the next generation of AI-powered consumer technology. To support an aggressive product roadmap and massive user growth, they are adding experienced Senior Backend Engineers to their engineering team.

This is a highly impactful role where you’ll contribute directly to system design, product direction, and large-scale platform performance—all within a fast-moving, innovation-driven environment.

You’ll collaborate closely with product leadership, engineering, and executive stakeholders to bring bold ideas to life.

• Partner with Product Managers to translate product requirements into scalable technical solutions

• Design backend architectures, integrations, and data flows

• Own features end-to-end: development, testing, deployment, and maintenance

• Review code, participate in pull requests, and raise engineering quality standards

• Contribute to technical strategy, experimentation, and performance optimization

• Work closely with a distributed team including platform engineers, SREs, and data specialists

While full-stack experience is welcomed, this role is heavily weighted toward deep Ruby on Rails backend expertise.

• 5+ years of professional software engineering experience

• Recent, hands-on experience developing with Ruby on Rails

• Experience building and maintaining high-traffic, production-grade applications

• Background working in startups, scale-ups, or other rapid-growth environments

• Strong English communication skills (written & spoken)

• High ownership mentality—you take responsibility for outcomes, not just tasks

• Ability to balance speed with thoughtful engineering craftsmanship

• Strong product mindset with a focus on exceptional user experience

• Comfortable working on platforms that involve uncensored model-based content

• Exposure to data engineering, machine learning, or generative AI systems

• Experience collaborating across globally distributed teams

• Explosive growth: Tens of millions of users today with a path to hundreds of millions

• Industry leadership: A history of launching category-defining AI products

• Mission-driven tech: Building culturally relevant, real-world AI applications

• Veteran leadership: Founders and executives with multiple successful exits and public offerings

• Remote-first excellence: 100% distributed team of elite engineers from top-tier companies

• Ethics-first AI: Powered by a proprietary moderation and safety framework at scale

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