[Remote, Krakow, Warszawa] Full Stack Ruby Developers (junior and mid levels) [ 8k - 13k PLN ]


Global App Testing

Very well funded start up within crowdsourced app testing industry.
We have thousands of testers around the world who in an instant can QA/test any OS/Device.



We’re looking for backend ruby developers who are proactive and are willing to learn new ways of looking at the code and it’s design.

Your primary focus will be on all things backend and a bit of frontend. Most of the time you will be working within one of the small teams which are focused on a specific feature or a pipeline.

Our teams are structured in a way that there’s always a single person that makes final decisions so you won’t have to deal with a flat management structure problems


  • negotiable salary, but within 8000 - 13000 PLN net a month on a VAT invoice (B2B), depending on your experience.
  • permanent contract with a 6 months trial period
  • career progression within the development team up to a Lead Developer in Poland


  • paid holidays because this is B2B initially
  • paid sick leave

Take the above list into account when thinking about your monthly rate.


  • remotely at first and later on we might set up an office depending on who we hire and where, but you can continue working remotely if you wish


  • communicating on a daily basis with a Lead Developer in UK via chat or hangouts
  • designing and implementing major new features for internal and external users (for e.g. Customers, Testers, Operations Team)
  • building modular code which has a clear separation of responsibility
  • optimizing applications for maximum speed and scalability if needed
  • leading a project from time to time
  • solving various interesting problems around tester management, tester scoring, semi automated test execution, spam activity detection, computer vision and natural language processing down the line
  • suggesting technologies that fit the problem at hand
  • suggesting technologies that you would like to try out because you sense that they can bring a lot to the table but had no chance to try them out yet
  • suggesting technologies and solutions which could be a game changer in our market (or any other market)
  • mentoring less experienced developers


Please keep in mind that you don’t need to tick all the boxes here, because we will need to teach you some of those things either way.

  • good knowledge of Ruby
  • relatively good understanding of TDD and it’s benefits to be able to code with and without it while keeping the code quality high (we’ll teach you if needed)
  • good understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3
  • good understanding of git code versioning tool


  • 2 to 3 years of experience in backend development
  • designing and implementing relatively complex applications (code complexity and data model complexity)
  • integration with various internal and external APIs using opensource and custom built API connectors
  • creating database schemas that represent and support business processes


  • any experience with building Docker based server architecture (starting with a dev machine and ending in scalable production)
  • any experience with building NodeJS apps (both frontend and server apps)
  • any experience in latest ReactJS, ES5, ES6, Redux
  • basic understanding of how to apply SOLID principles in practice
  • good knowledge of automated testing and specs maintenance problems so you can provide suggestions to the sales or management team from time to time if they have any questions


Our dedication to helping you become successful. We are huge on personal development and will dedicate time helping make sure you achieve your personal and professional goals and bucket lists.
Responsibility and a real say in the future of the company. You’ll have a role that will be vital to the company’s success and every idea you come up with will always be considered.



recruitment has been paused for now because we have found new devs :slight_smile: thx

we’ll reopen recruitment in few months and I will update this advert to let everyone know.