Middle/Senior Ruby on Rails Developer for Stryber (Kyiv)





We are Stryber - a leading company builder, located in Munich (Germany) and Zurich (Switzerland).

We build web/ mobile prototypes and MVPs to test and iterate business ideas quickly in the market. Later, we scale and grow the most promising ones to become leading solutions in their market.

Simple click-dummies, rapid MVPs or sophisticated deep-tech SaaS solutions, we have a variety of start-up projects ahead of us in industries like FinTech, PropTech, Health, Food/Beverage or MarTech.

Read more +


On behalf of Stryber Ciklum is looking for Middle/Senior Ruby on Rails Developer to join Kiev team on full-time basis.

In this role you will be responsible for building new digital ventures from scratch and/or adding new features to one of our other existing platforms, especially our SaaS software www.promopilot.com. Your primary focus will be the development of all server side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the frontend. You will also be responsible for integrating the frontend elements built by your coworkers into the application. Therefore, a basic understanding of frontend technologies is necessary as well.

Apart from your excellent programming skills, you possess the ability to think from a customer-oriented perspective, to build features as efficiently and smart as possible, and have high expectations of yourself to build customer-friendly, fast, and reliable software.

If this sounds interesting and you know that you are better than most in your field – please apply for this position!


  • Design, build, and maintain efficient, reusable, and reliable Ruby code
  • Building backend solutions that can be connected with multiple external APIs and handle data efficiently (e.g. asynchronous processes, caching, error handling, batch processing, secure transmissions);
  • Integration of user-facing elements developed by frontend developers with server-side logic;
  • Identify bottlenecks and bugs, and devise solutions to these problems;
  • Actively help to improve code quality, application speed and scalability, architecture and automatization;
  • Build reusable code and libraries for future use


  • 3+ years’ experience with Ruby on Rails, good understanding of the syntax of Ruby and its nuances, and a knack for writing clean, readable Ruby code;
  • Good understanding of server-side templating languages and server-side CSS preprocessors;
  • Familiarity with concepts of OOP, MVC, Mocking, ORM, continuous integration, micro services, and RESTful;
  • Decent experience with frontend technologies, such as JavaScript, HTML5, and CSS3 is a plus;
  • Ability to integrate multiple data sources and databases into one system;
  • Understanding of fundamental design principles behind a scalable application;
  • Able to create database schemas that represent and support business processes;
  • Able to implement automated testing platforms and unit tests;
  • Proficient understanding of tools like GitHub and Jira;
  • Experience with popular APIs, like Facebook (Marketing), Google (AdWords), Mailchimp, or Stripe, is a plus;
  • The motivation to be open to learn another language like NodeJS in the future is a plus;
  • Written and verbal fluency in English is a must

Personal skills

  • Reliable, organized, communicative, customer-oriented;
  • Passion for startups;
  • Doer/achiever;
  • Intrinsic high-quality standard and motivation to constantly learn and improve

What's in it for you

  • Work on really cool startup projects, they might include the next unicorn :);
  • We do not expect a 9-to-5 working routine; results count;
  • We cultivate a respectful atmosphere in which everyone feels comfortable to speak up freely;
  • We achieve extraordinary outcomes that exceed the expectations of our clients and make our customer happy;
  • Awesome team challenger events and a lot of fun;
  • Competitive salary protected from local currency deviations;
  • State of the art, cool, centrally located offices with warm atmosphere which creates really good working conditions.