Ruby on Rails Developer - Senior

Overview: We are looking for a Senior Ruby Developer to join a highly experienced engineering team working on complex, data-intensive systems. You will help design and build reliable, fault-tolerant solutions, take ownership of their performance in production, and solve challenging data and scalability problems. Purpose of the role: Design and improve scalable Ruby services for high-load, data-intensive systems. You will own solutions from implementation to production, troubleshoot complex issues, optimize application and database performance, and contribute to technical decisions and engineering practices. Key responsibilities: - Work in a fully agile environment with senior engineers and product managers - Participate in designing fault-tolerant, highly available and optimized solutions - Monitor and optimize your services in production for excellence - Research and develop new technologies and tools - Collaborate with other teams - product, infrastructure and business Required Experience: - Minimum 5-year experience in software development - Solid Ruby programming skills - Hands-on experience with data-intensive applications development & performance tuning - Experience in developing complex solutions from scratch - Strong SQL skills and solid understanding of relational databases, with the ability and curiosity to investigate complex data issues, analyze large datasets, and perform root-cause analysis - Deep data structures, OOP, and algorithms knowledge - Good communication skills Nice to have: - Familiarity with ClickHouse - Familiarity with AI-powered developer tools and practical experience integrating them into daily development workflows - Experience with Kafka - Ability to implement space and time-efficient algorithms and understand which one is preferable and when - Readiness to learn other programming languages (e.g. Golang, Scala) - Familiarity with SRE practices - Familiarity with cloud native technologies (e.g. k8s, Helm, Prometheus) Our Benefits: - Private health insurance - Sports benefits - Comprehensive Mental Health Program - Free English lessons (online) - Local language courses - Paid time off - Maternity leave support - Referral program rewards - Upskilling, internal workshops, and participation in professional conferences and corporate events

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