Location: Fully remote – Europe (CET ±3 hours)
Salary: €75,000–€105,000/year, depending on location and experience
Contract: B2B preferred, versátil
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 e

📌 Senior Ruby on Rails Engineer (Málaga)
🏢 Recruiter4you
📍 Málaga