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.)