David Kennedy Recruitment

ruby on rails engineer for AI companionship products

In short

This senior Ruby on Rails engineer role is at a fast-growing AI company building AI companionship products with uncensored and NSFW content, serving millions of users worldwide. The job covers designing, developing and maintaining scalable backend applications, from technical planning through production, working closely with product and engineering teams. It requires 5+ years of backend/full-stack experience with strong recent hands-on Rails experience, exposure to applications with thousands or more monthly active users, and being based in Europe with CET ±3 hours overlap. Candidates must be fully comfortable working on uncensored NSFW AI companionship content.

About the Company
The company is a fast-growing AI technology company serving millions of users worldwide. Its products include AI companionship products with uncensored and NSFW content.
Responsibilities
•Design, develop, and maintain scalable backend applications using Ruby on Rails
•Collaborate with Product Managers to review requirements and translate specifications into technical solutions
•Prepare technical integration plans, development breakdowns, and effort estimates
•Implement new features and improve existing platform functionality
•Write clean, maintainable, well-tested production code
•Participate in pull requests, peer code reviews, and testing
•Troubleshoot application issues and improve reliability, performance, and scalability
•Contribute to technical decision-making and product roadmap discussions
•Experiment with technologies and approaches to improve product functionality and user experience
•Work with distributed engineering, infrastructure, and product teams
Requirements
•5+ Years of commercial experience as a Backend or Full-Stack Software Engineer
•Strong, recent hands-on Ruby on Rails experience in production
•Ability to independently design and implement complex backend features
•Experience with applications serving thousands or more monthly active users and understanding of reliable, scalable systems
•Experience in technology scale-ups, startups, or similarly agile environments; comfortable with changing priorities and tight deadlines
•Proven ability to take features from requirements through development, testing, and production
•Excellent spoken and written English
•Based in Europe, with CET ±3 hours working overlap
•Fully comfortable working on AI companionship products involving uncensored and NSFW content
Conditions
•B2B engagement
•100% Remote working
•20 Working days of paid time off annually
•Annual company gathering
•Health and wellbeing support
•Learning and professional development budget
•Company laptop and equipment support
•Access to AI development tools, including Cursor, Claude Code, and ChatGPT
•Direct collaboration with experienced engineering leadership and the chance to influence technical decisions

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