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