Senior Full-Stack Ruby Engineer

We are looking for a Senior Full-Stack Ruby Engineer to design and grow a multi-tenant SaaS platform delivering real estate and asset-management data at scale. You'll contribute across the whole stack — from PostgreSQL query tuning and background data pipelines to server-rendered Hotwire views and interactive React + TypeScript front-end components — and take features from spec through production release on AWS-backed Kubernetes.

This is a hands-on engineering position on a team that prizes strong test coverage, clean conventions, and delivering reliable software to a demanding production environment.

Kindly note that this role supports remote work, but only from within Ukraine.

Responsibilities

• Design and implement features across a Ruby on Rails 8 monolith using established patterns: form objects, query objects, service objects, Pundit policies, and ViewComponents
• Build dynamic, server-rendered UI with Hotwire (Turbo + Stimulus) and Bootstrap 5, plus richer interactive interfaces with React + TypeScript (MUI, ag-grid, react-select, chart.js) bundled through Vite
• Model and tune data in PostgreSQL — craft efficient queries, design indexes, remove N+1s, and author safe, zero-downtime migrations
• Deliver asynchronous and scheduled work with Sidekiq — data ingestion pipelines, file processing, and long-running jobs
• Write thorough automated tests (RSpec request/system specs, Vitest) as a standard part of every change
• Ship code through a CI/CD pipeline that builds Docker images, pushes to AWS ECR, and deploys to Kubernetes clusters across staging and production
• Collaborate on infrastructure managed via Terraform and Kubernetes manifests kept in dedicated infrastructure repositories
  
  

Requirements

• 5+ years of professional software development experience
• 3+ years building production applications with Ruby on Rails, including a working grasp of Rails conventions, ActiveRecord, and background processing with Sidekiq
• Proficiency in PostgreSQL — crafting efficient queries and reasoning about indexes and schema changes
• Expertise in React and TypeScript on the front end, and willingness to work in a server-rendered Hotwire (Turbo/Stimulus) environment
• Familiarity with authentication and authorization patterns (e.g., Auth0, OmniAuth, Warden, Pundit, or comparable tools)
• Test-first mindset and capability to write meaningful tests that verify behavior rather than assume it
• Excellent command of written and spoken English (B2+ level)
  
  

Nice to have

• Deeper proficiency in PostgreSQL — query tuning, indexing strategy, connection pooling, and safe zero-downtime migrations
• Knowledge of AWS services (ECR, S3, RDS) and shipping containerized applications to Kubernetes
• Background in Terraform and infrastructure-as-code workflows, particularly where app and infra live in separate repositories
• Understanding of multi-tenant architectures (subdomain-based tenancy) and exposure to data-pipeline / ETL work, file ingestion (S3 multipart, SFTP), and document/spreadsheet processing
• Skills in observability tooling (Sentry, New Relic, Prometheus) and production hardening (rate limiting, secure headers, health checks)
  
  

We offer

• 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
  

Kindly be advised that the set of benefits, including learning, certification, and other opportunities, may vary depending on the role you apply for. Our recruiter will be able to share more details about the specific opportunity during your general interview.

EPAM strives to provide its global team of over 62,350 professionals in more than 55 countries with opportunities for professional growth from day one of collaboration. Our colleagues are the source of EPAM's success, so we value cooperation, strive to always understand our clients' business and aim for the highest quality standards. No matter where you are, you will join a dedicated, diverse community that will help you realize your potential to the fullest.