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 Fully remote, async culture — work autonomously with no micromanagement Join a senior team with real product vision Trip to Paris after 8 months to meet the team ️ Impact features seen by millions of users J-18808-Ljbffr

Location: São Paulo, São Paulo, BR

Posted Date: 11/3/2025