Senior Backend Engineer

Summary

Join Persado's vibrant Engineering team as a Senior Backend Engineer (Ruby on Rails)! This role focuses on designing and building robust APIs, services, and data-driven solutions using Ruby on Rails. You will collaborate with various teams, mentor junior engineers, and have opportunities for continuous learning and growth. The position offers a hybrid work model, competitive compensation, and generous benefits, including retirement support, professional development, and flexible time off. Based in Greece or any EU country, this role requires at least 5 years of experience on large-scale projects and proficiency in Ruby on Rails, SQL, and API development. React experience is a plus.

Requirements

• Backend Focus
• Ruby on Rails Proficiency: At least 3 years of hands-on experience with Ruby on Rails
• Relational Databases: Strong SQL skills (e.g., PostgreSQL) and experience working with complex schemas
• API & Microservices: Familiarity with architecting RESTful APIs, microservices, or asynchronous backend systems
• At least 5 years of experience on large-scale projects

Responsibilities

• Be part of a fun, diverse, and like-minded developer team that thrives on innovation and knowledge sharing
• Own the Backend: Develop new features, optimize existing services, and maintain critical APIs in Ruby on Rails
• Collaborate closely with our Product, Data Science, and Design teams to build well-researched, high-impact features—our devs have plenty of product ownership!
• Partner with QA & MLOps to ensure our applications stay reliable, scalable, and efficient
• Solve challenging technical problems and work with complex data to deliver seamless user experiences
• Mentor junior engineers (and keep learning a ton yourself!)
• Dive into internal meetups and discussions on a variety of software engineering topics
• Leverage online resources and courses —we support continuous learning and growth
• Have a structured career development path – check out our Engineering Job Ladder

Preferred Qualifications

• React Know-How or Willingness to Learn: Familiarity with React, JavaScript, or TypeScript can help you collaborate across the full stack
• UI Collaboration: Interest in or experience with bridging backend services to polished front-end experiences
• Testing Enthusiasm: Experience with TDD, RSpec, or similar testing frameworks is a plus
• Performance Mindset: Understanding of scalability, performance optimization, and security best practices

Benefits

• Persado’s hybrid working model empowers both remote and in-office work equitably
• Competitive & Equitable Compensation: We believe in fair pay and reward excellence
• Generous Benefits Packages: Offered globally
• Retirement Support: 401k matching (USA) or Pension Scheme (certain EU locations)
• Professional Growth: Dedicated enablement and training teams, on-demand tools, and resources
• Employee Enrichment Fund: Pursue a passion or upgrade your home office
• Structured Onboarding: Confident start, long-term success
• Career Development: Clear paths for mobility, continuous feedback loops, and performance management
• Learning Resources: Online subscriptions, technical books, and courses
• Flexible Time Off: Including Summer Fridays and a one-week Winter Holiday Break
• #PersadoCares: 2 paid Volunteer days per year and charitable donation matching
• Diversity, Inclusion & Belonging: Culture month celebrations, commitment to bias-free recruitment, community ERGs, and more