Hybrid Senior Backend Engineer – Product Growth

Posted 2 weeks ago

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About the role

  • Build and maintain backend systems and APIs that power growth experiments across onboarding, activation, and usage.
  • Collaborate closely with product, design, and frontend engineers to define, implement, and measure experiments (A/B tests).
  • Integrate with existing large-scale Ruby on Rails systems while contributing to performance, scalability, and maintainability.
  • Develop and own new backend endpoints supporting personalized onboarding, user profiling, and data-driven experimentation.
  • Work autonomously on short iteration cycles, shipping small, impactful improvements frequently.
  • Communicate and collaborate across multiple Cloudinary teams to coordinate experimental initiatives.
  • Explore and apply modern development tools, including GitHub Copilot, Cursor, and GPT-based assistants, to enhance productivity.
  • Participate in shaping how we design and execute growth experiments from both technical and product perspectives.

Requirements

  • 5+ years of backend development experience, preferably in Ruby on Rails within large, complex codebases.
  • Strong understanding of API design, service architecture, and data modeling.
  • Experience working with AWS or similar cloud environments.
  • Familiarity with frontend technologies (React, TypeScript) - a plus, not a requirement.
  • Comfortable working in a fast-moving environment (Scrumban).
  • Excellent communication skills and ability to work independently with minimal instruction.
  • Open-minded, curious, and eager to explore new technical areas.
  • Strong problem-solving mindset and willingness to take ownership end-to-end.
  • Interest in or prior exposure to experimentation platforms (A/B testing, feature flags) - nice to have.
  • Enthusiasm for learning and using AI-assisted development tools like Copilot, Cursor, or GPT.

Benefits

  • Be part of a trusted, high-ownership team that values autonomy and creativity.
  • Hybrid work model - 2 days per week in our Kraków office (ul. Fabryczna 18) with parking available.
  • Collaborate closely with team members in Poland and Israel.
  • Access to modern tools and opportunities to grow your skills across backend, frontend, and experimentation.
  • Work that directly impacts Cloudinary’s business growth and user experience.

Job title

Senior Backend Engineer – Product Growth

Job type

Experience level

Senior

Salary

Not specified

Degree requirement

No Education Requirement

Location requirements

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