Software Architect jobs in Spain

Join to apply for the Solutions Architect role at Royal Class

We’re looking for a Solutions Architect who thrives on solving complex technical problems and designing scalable, future-ready systems. You’ll be the technical backbone of our product, responsible for defining architecture across multiple applications, optimizing performance, and ensuring seamless integrations.

• Design and own the overall system architecture, ensuring scalability, reliability, and security.
• Architect and optimize multi-tenant platforms that support high performance and data isolation.
• Lead the design and implementation of dynamic form creation systems for flexible product workflows.
• Drive technical decisions around mono-repo management and integrating multiple applications in a single ecosystem.
• Work hands-on with the MERN stack (MongoDB, Express, React, Node.js) to prototype and guide development.
• Provide deep database expertise in MongoDB, PostgreSQL, and data lake solutions.
• Collaborate with product managers, engineers, and business stakeholders to align architecture with business goals.
• Troubleshoot complex issues and provide creative, scalable solutions under tight timelines.
• Mentor developers, ensuring adherence to best practices, coding standards, and architectural principles.
• Stay ahead of emerging technologies, evaluating and adopting them where they add value.

• 7+ years of experience in software engineering & architecture, with a strong focus on scalable systems.
• Proven expertise in multi-tenant SaaS architectures.
• Hands-on experience with MERN stack at a deep technical level.
• Strong knowledge of databases: MongoDB, PostgreSQL, and data lake design / implementation.
• Experience managing mono-repos and coordinating multiple interdependent applications.
• Strong understanding of API design, microservices, and distributed systems.
• Ability to balance big-picture architecture with hands-on coding / problem-solving.
• Excellent communication skills — you can translate complex technical designs into clear concepts for both engineers and non-technical stakeholders.
• A problem-solving mindset, comfortable working in dynamic, startup-style environments.

• Big technical impact — shape the foundation of a product built to scale.
• Cutting-edge architecture challenges — multi-tenancy, dynamic systems, and data lakes.
• Collaborative, startup environment — work closely with QA, BA, and product teams.
• Room to innovate — freedom to propose, test, and adopt new technologies.
• Leadership opportunity — mentor engineers and set technical direction.

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Engineering and Information Technology
• Industries: Professional Organizations