Top Software Engineer Jobs in Spain

The role involves developing custom Drupal modules, integrating core APIs, and working with front-end technologies like HTML, CSS, and JavaScript, as well as backend technologies such as .NET and C#. Responsibilities include cloud hosting familiarity and agile environment participation.

Design, develop, test, and maintain full-stack applications within a cloud-native, microservices architecture. Build RESTful APIs and backend services in .NET, create Angular frontends, implement asynchronous messaging, manage data and caching, maintain CI/CD pipelines, containerize with Docker/Kubernetes, and ensure observability and testing practices while collaborating across product, QA, and engineering teams.

Develop and maintain high-performance microservices, engage in the full software development lifecycle, and collaborate within autonomous teams. Understand service architecture and optimize solutions for scalability and resilience.

The role involves developing and maintaining embedded C code for HVAC control systems, participating in debugging, testing, and ensuring compliance with coding standards.

The Software Developer will develop IoT backend applications, manage production incidents, create documentation, and ensure best practices while being available 24x7 for service care.

You will design and maintain Python applications while implementing DevOps practices, managing cloud infrastructure, and mentoring junior engineers.

As a Software Engineer, you'll build internal tools and integrations to improve company efficiency, translating business needs into technical solutions.

The VoIP Software Engineer will develop and maintain cloud PBX features using Asterisk and related technologies while handling complex SIP management and optimizing Linux environments.

Develop and optimize Go-based backend systems for an e-commerce platform. Collaborate with QA, refactor code, improve performance and stability, perform code reviews, and document software solutions.

Develop embedded software for ISR Mission Systems, including analysis, requirements definition, design, implementation, verification, and configuration management.

Design and implement backend trading services, own features end-to-end (schema, API, tests, UI integration), contribute to real-time infrastructure and client-facing APIs, and write integration tests against real dependencies.

Responsible for designing, developing, and maintaining enterprise software applications, collaborating on projects, and building scalable systems. Experience with APIs, databases, and Agile methodologies is required.

As a Senior Tech Generalist, you'll build and maintain end-to-end systems, improve scalability, and ensure reliable financial operations while mentoring others in a dynamic team environment.

Design, develop, and optimize scalable, reliable software systems. Ensure quality, performance, and uptime; mentor junior developers; implement APIs, clean architectures, and distributed solutions; monitor metrics and gather stakeholder feedback to drive continuous improvement.

Build and maintain backend services and integrations (Node.js/TypeScript), implement workflow orchestration (Temporal), and deliver React micro-frontends. Improve operational automation, reliability, testing, observability, and collaborate cross-functionally to ship product increments that reduce manual intervention.

The Software Engineer role involves developing high-quality web and mobile applications, collaborating with cross-functional teams, and ensuring core engineering practices while maintaining a strong user focus.

The Software Engineer will collaborate on backend technology products, building and supporting Monzo's banking platform, focusing on customer outcomes and efficient software development.

Collaborate with teams to develop backend systems for a technology product using various tools and technologies, focusing on customer outcomes and resilience.

Software Engineers at QuantCo will design and develop scalable solutions, integrate models into client businesses, and improve products based on client feedback.

Build and ship features and integrations for TheForkManager. Work with product and design, perform technical analysis, maintain code quality, fix bugs, mentor juniors, and participate in interviews and restaurant visits.

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.

Design, build, and operate scalable, secure, event-driven backend services for mobile apps. Own end-to-end development lifecycle, improve architecture and CI/CD, write robust tests, mentor engineers, lead incident response, and integrate AI-assisted developer tools.

Build and ship full-stack, production-grade scalable systems across backend and frontend. Own end-to-end feature delivery from requirements to deployment and monitoring. Apply strong system design, product-first judgment, high-velocity development practices, and clear cross-functional communication to deliver high-impact AI-enabled fintech features.

As a Senior Software Engineer at Perk, you'll own feature lifecycles, contribute to system architecture, mentor colleagues, and prioritize engineering excellence through collaborative, AI-driven development across teams.

As a Senior Software Engineer, you will design and maintain integration systems, manage user provisioning, optimize integrations, and collaborate with cross-functional teams and enterprise customers.