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Luminor Group

Senior Software Engineer (Ruby)

Luminor Group
Estonia · Full-time · Mid-Senior
What You Will Do as a Senior Software Engineer:


  • Design, build, and maintain secure, high-quality Ruby and Rails applications and APIs
  • Work across Ruby and JVM-powered Ruby environments, integrating with internal services where needed
  • Develop resilient integrations (REST/JSON and SOAP) and implement robust background processing
  • Ensure quality through code reviews, automated testing, and performance optimization
  • Contribute to delivery and operability using Linux, Docker, Kubernetes, AWS, and modern CI/CD practices
  • Collaborate with cross-functional teams to refine requirements and deliver value continuously
  • Participate in technical spikes, architecture discussions, and mentor peers


Our Tech Stack:


  • Ruby on Rails, JRuby, Redis, MySQL
  • Active Directory, Linux, Docker, Kubernetes, AWS, GitLab, Node.js


What We Expect:


  • Strong experience with Ruby/Ruby on Rails building secure, scalable web applications
  • Proficiency with SQL databases and background processing tools
  • Hands-on experience with Linux, Git, containers, and CI/CD; familiarity with Kubernetes and cloud platforms
  • A quality mindset - tests, reviews, and production readiness in a regulated environment
  • Strong collaboration skills and ability to own problems end-to-end
  • Fluent English is required in spoken and written communication due to working on the Pan-Baltic level


Nice to Have:


  • Experience with JRuby and Java interoperability
  • Knowledge of React for future frontend development
  • QA automation exposure and secure coding practices
  • Familiarity with enterprise authentication and XML parsing


What We Offer:


  • Flexible working hours, Hybrid work, and a possibility to work from anywhere in the EU, Iceland, Switzerland, and the UK (in total 90 days per year)
  • Additional weeks of vacation to all employees with 1+ years tenure
  • Volunteer time off and 30 fully paid calendar days for military training every year
  • Competitive health benefits package – health insurance after the first 3 months as + health days in case of your absence due to sickness without a doctor's note
  • Internal and external training programs, workshops, conferences, online trainings for professional growth and wellbeing
  • Special Offers for Luminor products & services
  • Working with international teams who value challenging work together with good humor and having fun
  • Gross salary. 4,000 - 7,000 EUR/month. The final offer will depend on the level of your experience and competencies


And last but not least - Yes, you can! That's our attitude towards our work, ambitions, ideas, and relationships. We at Luminor believe that anyone has the potential to achieve big things and encourage everyone to achieve them – professionally and personally.

Regardless of your role, with us, you will get a once-in-a-lifetime opportunity to build a local banking champion.

The application deadline is the 14th of November. We are looking for a candidate primarily already located within the Baltics. Please apply with your CV in English and PDF format!

Luminor is the leading independent bank in the Baltics and the third-largest provider of financial services in our region. We serve the financial needs of individuals, families, and companies. Just like our home markets of Estonia, Latvia, and Lithuania we are young, dynamic, and forward looking.

Luminor has a strong and capable team that is committed to achieving our strategic objectives. We are dedicated to supporting sustainable growth in the Baltic region by providing a long-term commitment to businesses and individuals.

Key Skills

Ranked by relevance

kubernetes linux ruby docker cicd aws gitlab react redis cloud java git sql xml jvm pan
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Country Guide

Estonia

Digital-first ecosystem and startup culture

Posted
Oct 07, 2025
Type
Full-time
Level
Mid-Senior
Location
Tallinn
Company
Luminor Group

Industries

Banking

Categories

Engineering Information Technology

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