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Backend Engineer (RoR)
We are looking Backend Engineer (RoR) - Growth Team
Estonia, Cyprus, Spain (Remote OK)
About us:
Leading crypto trading automation platform serving millions of traders. Integrated with 15+ exchanges (Binance, OKX, Coinbase). AI-driven bots, TradingView integrations, enterprise-grade infrastructure.
Team & Role:
Growth-focused team driving user acquisition and conversion:
Optimize registration and onboarding funnels
Convert free users → paid subscribers
A/B testing and growth metrics
Educational systems for new traders
Tech Stack: Ruby on Rails, PostgreSQL, AWS, Redis, React/TypeScript
Requirements:
4+ years Ruby on Rails production experience
PostgreSQL, AWS hands-on experience
External API integrations experience
Understanding code → business metrics connection
English B2+
Nice to have:
SaaS/subscription products experience
Growth engineering background
Willingness to evolve into fullstack (React)
Interest in crypto/trading
Process:
HR screening → Take-home test (2-3 hours) → Technical interview → EM interview
Feedback at each stage, 1-2 weeks total timeline.
What we offer:
Direct product impact (millions of users)
T-shaped engineer growth (backend → fullstack)
International team, flexible schedule
Competitive salary, modern equipment
Apply:
Send CV + brief note about your SaaS experience and what attracts you to growth engineering.
Published on: 9/18/2025

3Commas
3Commas offers an all-in-one solution for managing crypto assets across major exchanges, offering reliable trade execution, portfolio analytics, and more.