Senior Ruby Engineer

Published on June 28, 2024

Sunscrapers is a consultancy specializing in custom software development, full-stack web development, data engineering, and technical staff augmentation.We help startups, SMBs, and enterprises to solve problems, achieve business goals, and automate processes using technology. We combine business-savvy software craftsmanship and agile project management to build solutions that follow the best industry standards.We have delivered 250+ digital products used by clients all over the world, including ASUS, ESPN, Samsung, Spotify, Unilever, Volvo, as well as many startups.

Are you ready to take on the challenge?

We're looking for a Senior Ruby Engineer to join our team in Warsaw or remotely.

Advance your career with Sunscrapers, a leading force in software development, now expanding its presence in a data-centric environment. Join us in our mission to help clients grow and innovate through a comprehensive tech stack and robust data-related projects. Enjoy a competitive compensation package that reflects your skills and expertise while working in a company that values ambition, technical excellence, trust-based partnerships, and actively supports contributions to R&D initiatives.

The project:

We are seeking an experienced Senior Ruby Engineer to join our client's Software Development team at the ECA International Group. This role will involve close collaboration with the development team, project managers, and other stakeholders to design, build, and maintain state-of-the-art web applications that align with the client's business objectives.

The successful candidate’s primary focus will be the development of all server-side logic, the definition and maintenance of databases, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for developing and integrating the front-end into the application. Therefore, a solid understanding of front-end technologies is also necessary. In addition to development skills, we are looking for someone with management experience in a previous role.


  • 7+ years of Ruby development experience in the startup space, supporting clients of various sizes, across multiple industries.
  • Strong understanding of Ruby syntax and object-oriented programming principles.
  • Knowledge of the Ruby on Rails framework and experience in building applications with RoR.
  • Familiarity with technologies such as HTML, CSS, and JavaScript.
  • Proficiency in using version control systems, e.g. Git.
  • Knowledge of automated testing platforms like RSpec.
  • Proficiency in working with relational databases such as PostgreSQL or MySQL.
  • Understanding of fundamental design principles behind a scalable application
  • API Integration and Development: Skills in developing and integrating RESTful APIs and an understanding of JSON and XML formats for web services.
  • Web Security: Knowledge of web security best practices and common vulnerabilities in web applications (such as SQL injection, XSS, CSRF).
  • Cloud: Ability to manage and optimize cloud infrastructure, especially AWS, and knowledge of how to implement automated solutions to improve development and deployment processes.
  • Experience in an Agile/Scrum environment. Ability to run agile ceremonies and manage the development process.
  • Leadership: You have led a development team in a previous role and have led and coached other developers.


  • Knowledge of other development methodologies or practices, such as Kanban or Test-Driven Development (TDD).


  • Strong problem-solving skills, with an ability to diagnose and resolve complex software problems.
  • Ability to work seamlessly with UX/UI designers, backend developers, and other non-technical stakeholders to foster efficiency and innovation.
  • Ability to switch between technical and non-technical language, ensuring alignment between technical and business perspectives.
  • Participation in team discussions, contributing to a dynamic and interactive development environment.


What do we offer?

  • Culture of teamwork, professional development, and knowledge sharing (
  • Flexible working hours and remote work possibility
  • Multisport card
  • Private medical care
  • Culture of good feedback: code reviews, evaluation meetings, mentoring.
  • Comfortable office in central Warsaw equipped with all the necessary tools for comfortable work (Macbook Pro, external screen, ergonomic chairs) - if working on-site