Senior Ruby on Rails Developer

Work with NousLib — one of Europe’s fastest-growing dating platforms

About the Opportunity

NousLib is not just another dating app. With over 2.5 million users, triple-digit growth, and a place in the Top 10 Lifestyle Apps in France, they’re reshaping how open-minded people connect.

As part of their remote-first tech team via Workana Premium, you’ll join as a Senior Ruby on Rails Developer and lead feature work that touches both product and platform. The app is built on Rails with a sleek mobile webview — and it’s scaling fast across Europe, Japan, and the UK.

What You’ll Build

Your first months will focus on two high-impact projects:

• A custom in-house customer service platform (think Zendesk, rebuilt for the privacy-sensitive needs of a dating app)
• A story-based matching feature where users connect through shared fantasies — match on desire, not looks.

Both projects will stretch your backend muscles and offer plenty of room to improve architecture, performance, and team processes.

Day-to-Day Responsibilities

• Implement backend features in Ruby on Rails for both web and mobile
• Design performant APIs and services that scale
• Collaborate with frontend (Vue/React) and mobile freelancers
• Refactor legacy logic and improve performance on high-traffic code
• Drive technical decisions as you grow into deeper ownership

• 5+ years of professional experience with Ruby on Rails
• Strong database skills (MySQL, Redis, MongoDB)
• Solid frontend awareness (React/Vue, HTML/CSS) — you’ll interface with it, not own it
• Collaborative mindset — you’ll work with a distributed team across LATAM and Europe
• Familiarity with mobile (Swift/Kotlin) ecosystems is a plus
• Self-sufficient, communicative, and product-aware
  

Nice-to-Have

• Hotwire, WebRTC, AI/LLM interest
• Experience with moderation tools, chat/messaging features, or user privacy systems