Write clean, maintainable, and idiomatic Ruby code using Ruby on Rails
Solve complex problems and diagnose issues within large, legacy codebases
Apply SOLID principles and proven design patterns to build scalable and efficient solutions
Design, implement, and maintain effective testing strategies for both new and existing code
Ensure high code quality through appropriate test coverage and test proportions
Identify and address security vulnerabilities at the code level, implementing safeguards beyond third-party gems
Optimize application performance, including resolving N+1 queries and understanding the underlying mechanics of performance tools
Participate in architectural discussions, evaluating trade-offs and proposing well-reasoned solutions
Contribute to system design with a focus on event-driven architectures, particularly in payment-related systems
Collaborate closely with team members through pair programming, code reviews, and constructive technical discussions
Mentor junior developers, supporting their technical growth and professional development
Analyze requirements and contribute to incremental modernization efforts, including refactoring, modularization, and risk mitigation
Work effectively with both technical and non-technical stakeholders to deliver business-driven solutions

Requirements

Deep, hands-on expertise in Ruby and Ruby on Rails with the ability to write idiomatic, high-quality code without reliance on documentation for basic syntax
Senior or Lead-level experience with Ruby/Rails (5+ years of commercial experience)
Strong foundation in software engineering principles, including SOLID principles and common design patterns
Solid understanding of data structures, algorithms, and object-oriented design
Proven experience working with large, complex legacy systems and refactoring them incrementally
Strong knowledge of testing strategies, including test design, execution, and maintaining meaningful coverage
Demonstrated ability to identify and implement robust security practices at the code level
Experience with performance optimization, including diagnosing and resolving N+1 queries
Clear understanding of event-driven architectures and the ability to discuss their benefits and trade-offs
Ability to lead and participate in architectural discussions and technical decision-making
Excellent collaboration and communication skills, with experience in pair programming and code reviews
Proven mentoring experience or strong willingness to support junior developers
Strong verbal and written English skills (B2+ level)
Availability to work with a time shift according to Australian business hours (from 4:00 AM Ukraine time)

Nice to have

Experience with Domain-Driven Design (DDD)
Familiarity with strategic modernization approaches, including modularization and risk mitigation
Experience working in agile environments with evolving system and business requirements

We offer/Benefits

With us you can:

Work on a flexible schedule remotely or from any of our comfortable offices or coworking spaces in Ukraine
Receive the necessary equipment to perform your work tasks
Change projects and technology stacks within EPAM
Gain experience in various business domains (Insurance, E-commerce, Healthcare, Finance, Travelling, Media, Artificial Intelligence, and more)
Relocation opportunities may be available for eligible candidates, depending on the role and openings at other EPAM locations
Participate in volunteer, charity programs and communities (both technical and interest-based)

We focus on your professional growth:

You can plan your individual career path together with your manager
Receive regular feedback from colleagues
Improve your English for free with certified teachers (Speaking Clubs, client interview preparation courses, etc.)
Get the opportunity to undergo free training and certification in AWS, GCP, or Azure Clouds
Use the internal E-learn training program (18,200+ specialized training and mentoring programs)
Access corporate accounts on LinkedIn Learning, Get Abstract and other partner resources
Study at EPAM Solution Architecture School with the instructors who are practicing architects
Develop as a leader, join Delivery Management, Resource Management, Leadership Essentials school and more
Participate in internal communities (500+ meetups, technical discussions, brainstorming sessions, online events and conferences annually)

What we offer:

Vacation and sick leave (including a sick leave without a medical certificate)
A wide range of Voluntary Medical Insurance programs providing both medical treatment and various preventive options (including sports activities)
Medical insurance for family members at corporate rates
Company support during significant life events (childbirth or adoption, marriage, etc.)
Support for psychological comfort: discounts on services from mental health specialists or coaches, thematic training
E-kids program - a free programming language training program for EPAMers' children

Ruby & 5 others