Ruby on Rails Backend Developer

QUIPU APP S.L.; Madrid; Híbrido; EUR 70.000 - 95.000; Jornada completa

Descripción de la vacante

Quipu, part of TeamSystem, is hiring a Senior Backend Developer (Ruby on Rails) to evolve our SaaS platform used by thousands of customers daily. You will join a skilled Product and Technology team building backend features, improving scalability, and delivering robust services in a fast-paced, collaborative environment.

You will work across the stack with Elasticsearch, Redis, MySQL, and AWS, participate in Agile ceremonies, and take ownership of end-to-end developments while upholding code

Formación

• Strong experience as a Backend Developer with Ruby on Rails.
• Solid understanding of designing and consuming REST APIs.
• Focus on code quality, testing, and software development best practices.
• Ability to work independently and propose efficient solutions.
• Collaborative, humble, and team-oriented mindset.
• Advanced level of English (written and spoken), with the ability to communicate effectively in an international environment.

Responsabilidades

• Improve and maintain the existing SaaS product while developing valuable new features.
• Build backend solutions using Ruby on Rails and related technologies.
• Participate in the full Agile development lifecycle, including refinement, estimation, technical analysis, and delivery.
• Collaborate closely with the Product Owner and the development team.
• Work cross-functionally with Sales, Marketing, and Customer Success teams.
• Contribute your expertise to discuss and define technical approaches and solutions.
• Take ownership of your developments end-to-end, ensuring quality standards and best practices are followed.

Conocimientos

Ruby on Rails

REST APIs

Code quality & testing

Independent work

Team collaboration

English proficiency

Herramientas

Elasticsearch

Sidekiq

Redis

MySQL

AWS

Nginx

Capistrano

Ansible

Terraform

Descripción del empleo

Senior Backend Developer (Ruby on Rails)

Madrid, A Coruña, Salamanca, Barcelona, Ciudad Real | Hybrid Model | Full-time | Permanent Contract At TeamSystem | Quipu, we help thousands of freelancers, SMEs, and accounting firms across Spain manage their businesses simply and efficiently through an intuitive and reliable SaaS platform. Since October 2025, Quipu has been part of TeamSystem, a leading international business software group, enabling us to continue innovating and scale our product with a long-term vision.

Your Mission

We are looking for a Senior Backend Developer (Ruby on Rails) to help us continue evolving our SaaS product. You will join a highly skilled Product and Technology team, actively contributing to the development of new features and the continuous improvement of a platform used by thousands of customers every day. Your work will have a direct impact on the quality, scalability, and future evolution of the product.

Technology Stack

• Backend Ruby on Rails
• Elasticsearch
• Sidekiq
• Redis
• MySQL
• REST APIs
• Frontend JavaScript (ES6+)
• React
• React Native
• Infrastructure AWS
• Nginx
• Capistrano
• Ansible
• Terraform

What Will You Do?

• Improve and maintain the existing SaaS product while developing valuable new features.
• Build backend solutions using Ruby on Rails and related technologies.
• Participate in the full Agile development lifecycle, including refinement, estimation, technical analysis, and delivery.
• Collaborate closely with the Product Owner and the development team.
• Work cross-functionally with Sales, Marketing, and Customer Success teams.
• Contribute your expertise to discuss and define technical approaches and solutions.
• Take ownership of your developments end-to-end, ensuring quality standards and best practices are followed.

What We’re Looking For

• Strong experience as a Backend Developer with Ruby on Rails.
• Solid understanding of designing and consuming REST APIs.
• Focus on code quality, testing, and software development best practices.
• Ability to work independently and propose efficient solutions.
• Collaborative, humble, and team-oriented mindset.
• Advanced level of English (written and spoken), with the ability to communicate effectively in an international environment.

Company Overview

At TeamSystem, we embrace a flexible, responsible way of working built on trust and autonomy. We provide modern tools, invest in continuous learning, and foster an inclusive, collaborative culture shaped by Agile principles. Teamsystem is a Leading Tech Company in the digital solutions market in Europe. We are a growing company with an ambitious mission: to bring digital into every business.