Top Software Engineer Jobs in Spain

Design, implement, test, operate, and maintain shipper-facing features for Smartbooking. Work in Agile teams to deliver scalable, secure REST APIs and front-end applications, drive quality through unit/functional/performance tests, and collaborate with QA and product stakeholders.

Lead accessibility engineering for a large web product: audit and prioritize remediation, ship technical fixes, build AI-assisted audit/remediation tooling, integrate accessibility into CI and Design System, run assistive-tech user tests, and drive cross-org accessibility adoption.

Lead the design and automation of testing frameworks for software platforms, ensuring quality and performance through end-to-end testing. Collaborate with DevOps and Agile teams to maintain effective CI/CD practices and defect management processes.

The position involves defining software requirements, developing verification test cases, and collaborating with teams to deliver software products efficiently while promoting innovation.

Manage quality in projects for System and Software, conduct audits, support assessments, ensure compliance, manage risks, and prepare customer communications regarding quality status.

Develop high-quality code for Fusion, troubleshoot technical issues, engage in agile practices, and mentor junior engineers. Collaborate on design and architecture while ensuring security and best practices.

Develop production-grade iOS applications using Swift and Kotlin Multiplatform, collaborating with Android teams and focusing on gamified user experience.

As a Senior Software Developer/Scrum Master, you will lead the development team through the software lifecycle using Agile methodologies, design high-quality code in C#, and ensure continuous improvement while facilitating team dynamics.

Lead the migration of software from C# to Rust, design high-performance systems, and mentor developers while maintaining coding standards and software quality.

Join Roche as a Senior Software Developer, driving the software development lifecycle, collaborating in Agile teams, and enhancing healthcare technology solutions.

Develop, optimize, and test core PostgreSQL database functionalities; collaborate with team members and provide support to customers. Requires strong C/C++ skills and database expertise.

The Senior Software Engineer will develop multi-currency account systems and payment processes, lead product initiatives, and mentor team members.

Develop and maintain embedded software for RF and data converter products, collaborate across teams, and debug complex system issues.

As a Software Engineer - Scraping Specialist, you'll create systems for AI to access web data, develop automation frameworks, and collaborate on real-time data integration for AI agents.

Lead architecture and implementation of platform modernization from a .NET monolith toward a unified Java/Spring stack. Design zero-downtime migration patterns, build and transition services, collaborate with product and distributed teams, implement observability with Grafana and tracing, and leverage agentic programming tools to accelerate refactoring and development.

The Senior Software Engineer will design and implement card platform features, maintain integrations, architect scalable systems, and mentor team members.

As a Senior Software Engineer, you will design, develop, and implement features for the core products using NodeJS and Java while ensuring clean and efficient code. You will participate in monitoring deployments, collaborate in an agile environment, and contribute to technical decisions.

As a Senior Software Engineer, you will operate and manage cloud-based database infrastructure, improve system reliability, and collaborate on scaling strategies while managing key production clusters.

As a Senior Software Engineer, you will develop embedded software for motor control and inverter systems, ensuring compliance with automotive standards while collaborating with cross-functional teams.

Design, build, and maintain production-grade Go services and Kubernetes operators to provision and govern database and streaming resources across AWS and GCP. Improve scalability, reliability, automation, and developer experience for distributed systems and streaming ecosystems while collaborating with product, security, and engineering teams.

The Senior Software Engineer will build integrations with external APIs, optimize code performance, and maintain testing protocols. A focus on backend development is essential.

Develop data-oriented code in Python, maintain data pipelines, perform NLP tasks, and build machine learning models to support AI solutions.

Design and develop scalable backend services, integrate AI capabilities, and improve existing systems. Collaborate across teams to enhance the CMC platform.

Own and improve Langfuse SDKs (Python and TypeScript), ensuring reliability, performance, API design, integrations with AI frameworks, OpenTelemetry support, documentation, and developer experience.

Lead optimization of concurrent systems, scale backend microservices, and collaborate with developers and engineers on deployment for retail solutions.