# Senior Full-Stack Engineer \(Ruby on Rails\) - Company: [Pixelmatters]() - Location: Porto - Remote: Yes - Team: Engineering - Employment type: Full Time - Salary: €38K – €61K - Posted: July 23, 2026 ## Job description **Pixelmatters is a digital product studio.** We’re a team of strategists, designers and engineers creating top-quality digital products. Our **mission** is to empower businesses to achieve their full potential by creating top-quality digital products while fostering great relationships along the way. We envision a world where great user experience is the norm, not the exception, inspiring businesses and people to be at their best. **We're looking for you**, a meticulous, curious, and adaptable Senior Full-Stack Engineer, who has the ability to design and deliver scalable, high-performance digital products across the entire stack. You combine deep technical expertise with strong ownership, contributing to the team by building reliable solutions and helping maintain engineering standards. **Your role** will focus on designing, implementing, and evolving full-stack architectures using Ruby on Rails on the back-end and React on the front-end. You will participate in technical discussions and help ensure solutions are secure, scalable, and maintainable. You will be involved in all stages of product development, from front-end implementation and API design to database modeling. While the primary focus will be on back-end development with Ruby on Rails, you'll contribute across the full stack to help deliver the product end-to-end. **Some of your day-to-day tasks** will include designing scalable back-end and front-end architectures, developing and optimizing RESTful APIs, implementing UI components in React, defining database schemas, reviewing code, and proactively identifying performance, reliability, and security improvements across the system. **Requirements** * At least 5+ years of experience in software engineering, with strong experience as a Full-Stack Engineer. * Proven expertise with Ruby on Rails and React, or similar frameworks, with the ability to make architectural decisions across both layers. * Strong understanding of software architecture, system design, and engineering best practices. * Solid experience designing and building RESTful APIs. * Good knowledge of databases, including schema design, performance optimization, and data integrity practices (e.g., PostgreSQL, MySQL, Redis). * Experience optimizing data flow across the stack, including API design, caching strategies, and front-end rendering performance. * Fluency with agentic AI tools (such as Claude Code or Cursor) as a regular part of your development workflow. * Good understanding of front-end architecture patterns, state management, and component-driven development in React. * Proficiency with unit, integration, and end-to-end testing across both front-end and back-end. * Strong experience with Git workflows and collaborative development in multi-branch environments. * Good understanding of English (written and spoken). * Portugal residency and Portuguese language proficiency are required for this role. **It would be awesome if you also have…** * Familiarity with cloud platforms (GCP is a plus). * Familiarity with containerization (Docker, Kubernetes). * Knowledge of system observability, structured logging, and performance profiling tools. * Strong problem-solving skills and the ability to work in a fast-paced environment. * Experience contributing to cross-project technical initiatives or architectural consistency. * Passion for improving internal standards and engineering practices. **Benefits** * Quality-driven, inspiring, and collaborative work environment. * Competitive salary and benefits, including health insurance. * Claude Code account with generous tokens’ budget. * We have a brand new office located at Porto’s downtown while continuing to back our [**“Remote as default, Office as an option” policy**](https://www.pixelmatters.com/blog/remote-as-default-office-as-an-option-our-remote-work-approach). **Compensation** * The salary range for this role is between 37,500€ to €61,185 annual gross which includes meal, vacation, and Xmas allowance. ## Apply [Apply on Pixelmatters]() Canonical job page: