All offersWarszawaRubySenior Ruby on Rails Developer
Senior Ruby on Rails Developer
Ruby
iRonin.IT

Senior Ruby on Rails Developer

iRonin.IT
Warszawa
Type of work
Undetermined
Experience
Senior
Employment Type
B2B
Operating mode
Remote

Tech stack

    Ruby
    advanced
    Ruby on Rails
    advanced
    JavaScript
    advanced
    PostgreSQL
    advanced
    SidekiqEnterprise
    regular

Job description

Online interview
Friendly offer
iRonin, or IT Samurai, is an IT professional striving to continuously improve their craft and provide IT services at the highest level. This concept holds true in every department of our company, which has been on the market for over 10 years. It’s one of the first organizations to operate 100% remotely since its very foundation.
Today we have almost 60 people on board, working from many cities around the world. In Poland, we have permanent offices in Warsaw, Wroclaw and Rzeszow.

In 2021, we have grown by 67%, in 2022 by 75%, and counting the whole period since 2018, by as much as +266%!
Wer’ve worked on more than 30 long-term partnerships and hundreds of projects. It allowed us to acquire rich design and technology know-how in industries such as fin-tech, med-tech, hr-tech, real-estate.
We have worked for clients from all over the world, including the United States, the United Kingdom, Germany, Barbados and Australia: just to name the few!

We work with a wide technology stack: Ruby on Rails, Elixir, Go-lang, Haskell, Python, Node, Java and many others. 
To ensure the highest quality of our services, we form teams with senior-level specialists. We take on only those projects that offer an opportunity for growth and are an interesting challenge that we can then proudly present in our portfolio.

Why us?

Join an experienced and close-knit team and have an impact on the further development of our organization. We offer a professional and friendly atmosphere, where unnecessary procedures are kept to a minimum. We are very flexible as to the form of cooperation and place of work.

Your challenges


  • Join iRonin’s tightly knit team of Ruby experts to test the limits of your skills, working on a complex and challenging fin-tech platform built with Ruby on Rails. 
  • Develop with a simple stack and complex business logic developed by a team of Ruby experts who code for quality and to the latest programming standards. 
  • Collaborate closely with a dozen more team members in the US to ensure security for sensitive data of thousands of users and consistency of thousands of daily financial transactions. The project is extremely well maintained in accordance with best development practices and the latest coding standards.

Your Profile


  • Senior back-end Ruby on Rails developer, who has worked on complex Ruby and Rails applications, who wants to develop their skills further by working with other expert polyglot programmers on a challenging project.
  • A solid understanding and hands-on practice with 
    • Object-Oriented Programming,
    • Software Design Patterns,
    • Test Driven Development, 
    • Service Oriented Architecture, 
    • Secure development practices,
    • Domain Driven Design,
    • Event sourcing.
  • Experience in fin-tech projects is very welcome. 
  • Great communication skills.
  • Team player, independent but can ask for help, and eager to help others.
  • Up-to-date with the latest trends, technologies and best practices in web development.

Tech stack


  • Ruby 2.7
  • Ruby on Rails 7.x
  • SidekiqEnterprise
  • PostgreSQL
  • JavaScript
  • Kibana
  • Grafana
  • Prometheus
  • Kafka

We offer


  • Flexible working hours. The most important thing for us is the success of the project and excellent communication, which translates into the satisfaction of all team members. If these assumptions are met, working hours don't matter!
  • 100% remote work. We have been working remotely since the very inception of our organization 10 years ago. We know how to do it, and we'll be happy to put you into this mode!
  • Option to work from the office. Do you have a need to leave home office a few times a month? Or do you prefer to work among people on a regular basis? We can easily provide you with this, as we manage to do in Rzeszow, Warsaw and Wroclaw.
  • Stable cooperation. We run only long-term projects. We have been mainly working with clients from the US and Europe for 10 years. Take a peek at our profile on clutch: https://clutch.co/profile/ironinit
  • Paid leave. We offer a form of cooperation based on a B2B contract with guaranteed paid days off.
  • Benefits+. Standard benefits such as Multisport card, LuxMed medical package, group insurance and more!