Senior Ruby on Rails Engineer
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Location:
Fully remote – Europe (CET ±3 hours)
Salary:
€75,000–€105,000/year, depending on location and experience Contract: B2B preferred, flexible
Experience:
5+ years Important: Must be comfortable working with explicit NSFW content.
About the Role
We’re looking for an experienced Senior Ruby on Rails Engineer to join a fast-growing AI technology company behind an AI companionship platform used by millions worldwide. You’ll work on scalable, AI-powered applications, developing new features and improving existing functionality alongside the CTO, Tech Lead and wider engineering team. This is a hands-on individual contributor role for someone who enjoys coding, taking ownership and delivering high-quality solutions in a fast-moving environment.
Key Responsibilities
• Design, develop and maintain scalable backend applications using Ruby on Rails.
• Build new features and improve existing platform functionality.
• Work with Product Managers to translate requirements into technical solutions and estimate development efforts.
• Write clean, maintainable, well-tested production code.
• Participate in code reviews, testing and technical decision-making.
• Troubleshoot issues and improve application performance, reliability and scalability.
• Collaborate with distributed engineering, product and infrastructure teams. Requirements
• 5+ years of commercial experience in backend or full-stack software engineering.
• Strong, hands-on Ruby on Rails experience, ideally recent and in production.
• Experience building and scaling production applications with real users.
• Ability to take ownership of features from requirements through development, testing and deployment.
• Previous experience in a startup, scale-up or similarly fast-paced environment.
• Strong problem-solving skills and the ability to balance code quality with delivery speed.
• Excellent English and experience working with international teams.
• Full comfort working with uncensored AI companionship products and explicit NSFW content. Tech Stack Ruby on Rails, PostgreSQL, Redis, Hotwire (Turbo and Stimulus) and Tailwind CSS. Nice to Have
• Experience with generative AI, LLMs, NLP or machine learning.
• Familiarity with modern Rails development practices and AI-assisted coding tools.
• Experience working with globally distributed engineering teams. What’s on Offer?
• 100% remote working.
• Competitive salary, depending on location and experience.
• Direct collaboration with senior engineering leadership.
• Opportunity to influence technical decisions and product development.
• 20 days of paid annual leave.
• Learning and development budget, health and wellbeing support.
• Company laptop and equipment.
• Access to AI development tools, including Cursor, Claude Code and ChatGPT.
• Annual company gathering.
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