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June 19, 2026

Ruby Developer

Senior • Remote

12,000 - 14,500 PLN

Wroclaw, Poland

Project overview

This project focuses on building and maintaining high-volume, complex API integrations with external partners in a domain where transactional integrity and money flows are critical.

Position overview

We are looking for a Backend Engineer with strong expertise in pure Ruby. In this role, you will design and maintain robust backend services and high-volume API integrations in a domain where transactional integrity and money flows are critical. You’ll collaborate closely with stakeholders and external partners to deliver secure, scalable solutions.

Technology stack

  • Ruby (pure Ruby, not Rails-centric)
  • Redis
  • Docker
  • AWS services (EC2, S3, RDS)
  • Infrastructure-as-Code tools

Responsibilities

  • Design and implement robust backend services using Ruby
  • Develop and maintain complex API integrations with external systems
  • Ensure transactional integrity and reliability in high-volume environments
  • Collaborate with stakeholders and external partners to clarify requirements
  • Contribute to infrastructure automation and deployment processes
  • Participate in technical design discussions and solution shaping

Requirements

  • Strong experience with Ruby (beyond Ruby on Rails)
  • Proven track record of delivering backend services in complex domains
  • Expertise in API design, integration, and third-party connectivity
  • Familiarity with transactional systems and reliability constraints
  • Solid understanding of DevOps practices and Infrastructure-as-Code
  • Hands-on experience with AWS services (EC2, S3, RDS)
  • Knowledge of Docker for containerization
  • Experience with Redis
  • Strong analytical skills for navigating intricate business rules
  • Clear and confident communication skills for stakeholder engagement

Nice to have

  • Thin, EventMachine, Sinatra
  • Exposure to Elasticsearch
  • Experience in financial or transactional domains

What We Offer

  • Vacation days: Up to 26 business days per year
  • 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types
  • Health and life insurance (Luxmed)
  • MyBenefit platform with Multisport option
  • Internal psychological support service
  • English language classes from the first working day
  • Access to external learning platforms: O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training
  • Flexible workplace: work from the office, from home, or choose a hybrid option
  • Tech Skills Mentoring Program
  • Opportunities to develop as a public speaker, mentor, or technical interviewer
  • Fully paid idle (bench) when not involved in a project
  • Certification reimbursement (AWS, GCP, Microsoft, etc.)