Senior Ruby on Rails Developer

This is a fully remote position, open to applicants in Poland, +3 more countries.

📋 Description

• Create, develop, and enhance Ruby on Rails services that support the iGaming platform.

• Build high-performance APIs, manage payment and wallet processes, integrate real-time gaming features, and develop back-office tools.

• Utilize coding assistants and AI tools for scaffolding, refactoring, test creation, and code review while ensuring the quality of integrated code.

• Incorporate LLM-based functionalities into the product, such as fraud and risk detection, player support automation, content generation, and internal analytics assistance.

• Analyze critical paths and optimize PostgreSQL queries.

• Design strategies for caching and background processing.

• Investigate incidents to determine root causes and maintain performance and reliability.

• Review code produced by both humans and AI.

• Guide mid-level engineers and establish standards for responsible AI usage.

• Engage in architecture discussions, technical planning, and cross-team projects.

⛳️ Requirements

• Over 4 years of professional experience with Ruby on Rails.

• In-depth knowledge of Ruby internals, Rails conventions, and when to deviate from them.

• Strong expertise in SQL and PostgreSQL, including indexing, query optimization, and handling migrations on large tables without downtime.

• Comprehensive understanding of distributed system principles, such as message queues, idempotency, eventual consistency, background jobs, and caching.

• Familiarity with Sidekiq or similar background job frameworks.

• Experience with Redis.

• Practical experience using AI coding tools in daily tasks.

• Capability to assess and validate AI-generated code and critically analyze and write tests.

• Background in designing and utilizing REST and/or gRPC APIs.

• Knowledge of OpenAPI.

• Proficiency in Git, CI/CD pipelines, and Docker.

• Comfortable interpreting Kubernetes manifests and logs.

• Experience with observability tools such as Prometheus/Grafana, Sentry, or OpenTelemetry.

• Proficient in English at B2 level or above.

• Willingness to take ownership of architecture, handle edge cases, oversee production behavior, and ensure code quality.

🏝️ Benefits

• Private health insurance.

• Sports benefits.

• Comprehensive Mental Health Program.

• Free online English lessons.

• Local language courses.

• Paid time off.

• Support for maternity leave.

• Rewards for the referral program.

• Opportunities for upskilling, internal workshops, and participation in professional conferences and corporate events.