Ruby on Rails Developer - Senior
SOFTSWISS · Remote · Posted September 21, 2026
- Who can apply
- Cyprus, Poland
Warszawa, Poland; Beograd, Serbia; Kato Polemidia, Cyprus; Poznań, Poland; T'bilisi, Georgia
- Pay
- Not stated in the posting
- How you’d be employed
- Not stated in the posting
- Level
- Senior
- Location in the posting
- Warszawa, Poland · Beograd, Serbia · Kato Polemidia, Cyprus · Poznań, Poland · T'bilisi, Georgia
- Skills required
- Ruby on Rails, Ruby, SQL, Relational Databases, OOP, Data Structures, Algorithms, ClickHouse, Kafka, Kubernetes
Analyzed from the full posting. Quotes are the posting’s own words.
From the posting
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