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Ruby Developer - Help us deploy more than 80 times a month!

Global App Testing
🏢 Global App Testing 🌎 Remote 🕑 June 05

This job offer is expired


  • Perfect DevOps infrastructure for you
    • We deploy to production 80 times a month
    • You will work with Kubernetes, Prometheus, Grafana, Graylog, Sentry, NewRelic, GitHub, Concourse, Slack, JIRA
  • The team believe in Technical Excellence
    • We believe in Static Code Analysis, Code Review, SOLID
    • We build code we are proud of making it easier to look at work from our teammates
    • You will have full control over technical decisions from architecture to technology
  • New Technology Stack
    • Backend: Ruby 2.4, Ruby on Rails 5.1, RSpec, Eslint, Rubocop
    • Frontend: React v16.0, ES6, ES7, Jest, Redux, GraphQL, Webpack
  • The team believe in Proactive Learning
    • From retrospectives with the whole team to 360-degree feedbacks and 1:1.
    • The main purpose is to improve ourselves and the work we do
    • It’s fine to fail fast, it’s more important that you will learn from that
  • Competitive Compensation
    • Negotiable salary, but within 2800 – 5000 EUR net a month on a VAT invoice (B2B), depending on your experience and quality of your code
    • Paid holidays (all holidays in your country + up to 20 days)
    • Permanent contract with a 6 months trial period


Founded in 2013 by Ronald Cummings-John and Owais Peer, Global App Testing has been helping incredible companies deliver award-winning products to market. We do this by tackling one of the hardest problems that every product company faces: QA.

Using the power of crowdsourced testers, Global App Testing powers teams from companies such as Facebook, WhatsApp, Microsoft, Youtube and hundreds more to ensure product quality globally.


  • Designing and implementing new features with modular, secure and well tested full-stack code which has a clear separation of responsibility
  • Optimizing applications for maximum speed and scalability if needed– leading a project or feature from time to time
  • Solving various interesting problems around virtual machines, tester management, tester scoring, semi-automated test execution, spam activity detection (also ML, natural language processing, neural networks down the line if you’re interested)– suggesting technologies that fit the problem at hand
  • You'll work closely with other engineering teams so you can pioneer new technologies
  • You'll improve the team and company – you will be an active participant in our culture (mentorship for less experienced developers, interviewing, and new initiatives)


  • Min 3 (4.5 senior devs) years of commercial experience
  • Have built highly scalable and robust systems in the past– designing and implementing complex applications (code complexity and data model complexity)
  • Creating database schemas that represent and support business processes– integration with various internal and external APIs using open source and custom built API connectors
  • Data migration, transformation and scripting
  • Outputting data in different formats


We don't expect someone to tick every box. We are willing to train the right person who wants to learn.

  • Good understanding of Ruby and Ruby on Rails
  • Good understanding of TDD and it’s benefits to be able to code with and without it while keeping the code quality high (you need appropriate mindset when coding)
  • Understanding of few of the SOLID principles
  • Good understanding of front-end technologies and platforms, such as React, Redux, JavaScript, HTML5, and CSS3
  • Good understanding of git code versioning tool
  • Good written and spoken English communication skills (a must)
  • Ability to learn fast
  • Focus on delivering and self-management


  • Any experience with building NodeJS apps (both frontend and server apps)
  • Any experience in latest ReactJS, ES6, ES7, Redux, Elixir, Phoenix
  • Good understanding of how to apply SOLID principles in practice so you can help with training the team
  • Any experience with AI (ML, NLP, Neural Networks of various types, Swarm Intelligence, Genetic Algorithms, etc.)


  • Ability to work fully remotely or You can work from a modern office in Kraków in Zabocie area with table football


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