Ruby Developer

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.)