remotely.living

Ruby on Rails Developer - Senior

SOFTSWISS · Remote - Warszawa, Poland | Beograd, Serbia | Kato Polemidia, Cyprus | Poznań, Poland | T'bilisi, Georgia · 2026-09-21

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Job description

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