Backend Engineer - Ruby

Location: Portugal; Brazil SUMMARY: You will join a cross-functional squad responsible for building and maintaining high-scale, customer-facing services. The role involves contributing to new product features, evolving system architecture, improving code quality, and ensuring operational reliability in a modern, cloud-based environment. The ideal engineer thrives in a collaborative, autonomous culture that values experimentation, continuous learning, and shared ownership. This position plays a key part in shaping technical decisions, supporting platform evolution, and delivering impactful solutions at scale. WHAT WILL YOU BE DOING: You will be joining our engineering team and will be a valued member working closely in a collaborative, autonomous, cross-functional team. You will help with the following: Feature Delivery & Collaboration Participation in the design and delivery of new product features in collaboration with product, design, and engineering teams. Exploration of feasibility options and contribution to customer-focused engineering decisions. Commitment to clear goals, delivery expectations, and shared team objectives. Clear and responsible communication within the squad to support alignment and transparency. Communicating your needs clearly and responsibly. Architecture & Technical Decision-Making Contribution to system architecture discussions and evolution of technical design within the squad. Application of OOP, SOLID principles, and clean coding practices to build maintainable Ruby services. Participation in establishing engineering patterns, standards, and long-term architectural improvements. Support in building highly available, resilient, and scalable systems. Code Quality & Testing Development of high-quality Ruby code that is maintainable, readable, and structured for long-term sustainability. Adoption of strong testing practices using RSpec or Minitest to ensure robust test coverage. Improvement of existing systems to enhance reliability, modularity, and testability. Contribution to a culture of automated testing and continuous quality improvements. Operational Excellence Support in building and maintaining services operating under significant scale and traffic. Participation in monitoring, troubleshooting, and enhancing system resilience. Contribution to observability practices, operational readiness, and continuous improvement of production systems. Engagement in deployments and incident support as part of the team’s shared operational ownership. WHAT WE ARE LOOKING FOR: Core Technical Skills Strong hands-on experience with Ruby for building production applications. Ability to deliver maintainable, well-structured code aligned with OOP and SOLID principles. Proficiency in automated testing using RSpec or Minitest. Experience working with Git and collaborative development workflows. Backend Engineering Fundamentals Experience building scalable, API-driven backend services. Understanding of concurrency, asynchronous processing, and distributed system interactions. Experience with PostgreSQL, Redis, and MongoDB for data persistence and caching. Ability to design and troubleshoot systems operating under heavy load and high availability requirements. Operational & Performance Awareness Familiarity with diagnosing performance bottlenecks and implementing optimisations. Strong understanding of observability principles, including monitoring, logging, and system health analysis. Experience supporting and iterating on production systems. Communication & Collaboration Strong English communication skills, both written and verbal. Ability to contribute positively to team collaboration, solution discussions, and knowledge sharing. AWESOME BUT NOT REQUIRED: Experience with containers and orchestration (Docker, Kubernetes). Familiarity with Rack, Sinatra, or Rails frameworks. Exposure to EventMachine or event-driven architectures. Experience with ELK, Datadog, or similar observability stacks. Knowledge of AWS services such as ECR, EC2, S3, and RDS. Exposure to CI/CD pipelines, cloud-native practices, or infrastructure tooling. WHAT’S IN IT FOR YOU? Be part of our collegial environment where responsibility and authority are shared equally amongst colleagues, and help create our company culture A culture in which we don’t criticise failure but ensure we learn from our mistakes An Agile environment where your ideas are welcome The possibility to grow and experience different projects Fully remote Ongoing Training & Mentoring The possibility of travelling - ATTENTION!  THIS POSITION IS FOR  PORTUGAL OR BRAZIL-BASED ONLY