# Ruby on Rails Developer - Senior at SOFTSWISS

> Open job at SOFTSWISS in Warsaw, Poznań, Poland. Workplace: Remote (Poland).

Source: Poland Dev Jobs, https://poland-devjobs.com/jobs/softswiss-ruby-on-rails-developer-senior-b2mji57
Posted 21 September 2026. Last checked on the employer's career site: 10 November 2026.

## Facts

- Company: [SOFTSWISS](https://poland-devjobs.com/companies/softswiss)
- Location: Warsaw, Poznań, Poland
- Workplace: Remote (Poland)
- Employment type: Full-time
- Polish: Not required
- Skills: ClickHouse, Go, Helm, Kafka, Kubernetes, Prometheus, Ruby, Ruby on Rails, SQL, Scala
- Not mentioned in the job post: salary, visa sponsorship, relocation, where you can apply from

## 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

## How to apply

Apply on the job page, https://poland-devjobs.com/jobs/softswiss-ruby-on-rails-developer-senior-b2mji57: its Apply button opens the employer's own application page.

## More jobs from SOFTSWISS

- [Data Engineer - Senior](https://poland-devjobs.com/jobs/softswiss-data-engineer-senior-21y3t61): SOFTSWISS, Warsaw, Poland. Remote (Poland). Posted 2 November 2026.
- [Automation QA Engineer - Senior](https://poland-devjobs.com/jobs/softswiss-automation-qa-engineer-senior-i7qndjz): SOFTSWISS, Warsaw, Poland. Remote (Poland). Posted 2 November 2026.
- [FullStack Engineer - Wordpress](https://poland-devjobs.com/jobs/softswiss-fullstack-engineer-wordpress-woybsvx): SOFTSWISS, Warsaw, Poland. Remote (Poland). Posted 29 October 2026.
- [IAM Security Engineer – Senior](https://poland-devjobs.com/jobs/softswiss-iam-security-engineer-senior-uaktzqn): SOFTSWISS, Warsaw, Poland. Remote (Poland). Posted 13 October 2026.
- [Manual QA Engineer – Senior](https://poland-devjobs.com/jobs/softswiss-manual-qa-engineer-senior-etbhn8q): SOFTSWISS, Warsaw, Poland. Remote (Poland). Posted 12 October 2026.