Top Software Engineer Jobs in Spain

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Senior frontend developer responsible for designing and delivering high-quality Angular applications, mentoring teammates, driving frontend best practices, participating across the SDLC, ensuring code quality through reviews and testing, and working with CI/CD, APIs, and databases.

The System Software Engineer prepares customer analysis for traffic control software, develops customer-specific solutions, and supports project management and engineering teams throughout the project lifecycle.

Build and ship frontend features that integrate LLMs and agentic workflows. Write high-performance TypeScript and React code, design AI-driven UX, define APIs with backend teams, and ensure quality through design, reviews, and testing.

Define and document system requirements, develop and validate embedded software and control algorithms for air-to-water heat pumps, debug microcontroller code, verify prototypes and software behavior, and support communication protocol development (CAN, Modbus, UART) while collaborating with electronics and controls teams to meet product performance and safety targets.

Design, build, and maintain backend services for a complex, multi-tenant benefits domain. Translate regulatory and business rules into robust code, ensure data consistency at scale, own observability and testing, mentor teammates, and drive product velocity without accruing technical debt.

Develop cloud-based mobility solutions, participate in code reviews, troubleshoot issues, and ensure compliance with development standards and practices.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Develop, test, and maintain secure, scalable Salesforce enterprise software across the full delivery lifecycle. Responsibilities include architecture, hands-on coding with Apex, Visualforce, and Lightning Components, asynchronous processing, automated testing, documentation, Agile collaboration, code reviews, clean-code practices, and deployment. The role also involves contributing to engineering standards, continuous process improvement, knowledge-sharing communities, and mentoring other developers.

Design, develop, test, deploy, and support scalable APIs, automation services, and cloud-native software addressing security challenges. Build reliable solutions using modern engineering practices, CI/CD, automated testing, observability, and secure development. Collaborate with engineers, product owners, architects, and security specialists across the software lifecycle, contribute to architecture and code reviews, resolve technical issues, and improve engineering efficiency, reliability, and maintainability.

Design, build, and scale production-grade generative and agentic AI products, platforms, agents, copilots, and customer experiences. Develop LLM and RAG applications, reusable AI engineering frameworks, evaluation and guardrail systems, and reliable cloud-native services. Influence architecture and engineering standards, apply responsible AI practices, mentor engineers, and champion automated testing, DevSecOps, CI/CD, observability, and operational excellence across Business Banking technology.

Lead the design and delivery of scalable .NET software, APIs, backend services, cloud platforms, and data-enabled applications. Influence architecture, engineering standards, and technical direction across Business Banking technology. Champion testing, CI/CD, observability, DevSecOps, automation, and operational excellence while partnering with product and business stakeholders. Mentor engineers, support production platforms, and contribute to customer, CRM, data, AI, and shared platform capabilities.

Design and develop cybersecurity engineering solutions that protect banking customers and infrastructure. Build automation frameworks, backend systems, RESTful APIs, and scalable tooling using languages such as Python, Java, and TypeScript. Responsibilities include full software development lifecycle ownership, system integration and API/Kafka/MQ testing, CI/CD, code reviews, performance optimization, database integration, and maintaining high-quality, reliable software architectures.

Provide enterprise-wide technical leadership for security engineering platforms, automation services, APIs, and cloud-native solutions. Define technical strategy, guide multiple engineering squads, improve CI/CD, observability, reliability, scalability, and engineering standards, and contribute hands-on to architecture and software development. Mentor engineers, influence senior stakeholders, reduce technical debt, and evaluate AI and emerging technologies for security and operational challenges.

Staff Software Engineer leading production AI/ML and GenAI engineering within a payments technology environment. Responsibilities include building cloud-native AI services, agents, RAG systems, APIs, microservices, and reusable platforms; establishing evaluation, guardrails, observability, security, and responsible AI practices; and taking solutions from experimentation through production operations. The role also influences architecture and engineering standards, mentors engineers, and drives DevSecOps and AI adoption across teams.

Design and build scalable microservices, APIs, and enterprise platforms using cloud-native technologies. Shape architecture, improve engineering and security standards, integrate internal and external systems, and own production reliability through observability and automation. Contribute to CI/CD and safe deployments, mentor engineers, and guide pragmatic technical decisions. The role also involves AI-powered engineering, evaluation-driven development, and building agentic AI products and services.

Lead technical strategy and architecture across multiple squads to build scalable, secure, cloud-native platforms. Provide cross-team technical leadership, drive standardisation and engineering excellence, mentor senior engineers, and guide platform modernisation using modern tooling, workflow orchestration, and AI-enabled patterns.

Lead the design and delivery of scalable full-stack software, APIs, services, and platform capabilities for Business Banking. Influence architecture, engineering standards, and technical direction across cloud, data, and AI-enabled platforms. Drive testing, CI/CD, observability, DevSecOps, automation, and production excellence while partnering with product and business stakeholders. Mentor engineers and support continuous improvement across teams.

Lead design and delivery of an agentic Dynamics 365 contact centre using Copilot Studio and Azure AI. Build and optimise D365 Customer Service case management, integrate with ServiceNow, telephony and enterprise systems, and own solutions from discovery through go-live while ensuring responsible AI, security, and data governance in a regulated banking environment.

Lead design and delivery of cloud-native, full‑stack card platforms using Next.js/TypeScript and .NET/C#. Provide technical leadership across squads, own end‑to‑end systems on AWS, improve observability, CI/CD and DevSecOps, and apply AI‑enabled tooling to boost developer productivity and user experience.

The Senior Software Engineer will design and develop high-quality web and mobile applications, ensuring code quality while collaborating with product teams and mentoring junior engineers.

The role involves architecting AI solutions for compliance, ensuring regulatory adherence, automating processes, and enhancing team capabilities through technology and training.

The Senior Software Engineer will lead development initiatives, manage technology processes, and ensure effective collaboration with business partners while focusing on improving database operations and client engagement.

Design, build, and lead development of AppGlass features; develop AI-first tooling and automation; implement enterprise integrations and deployments across Kubernetes and cloud; and improve reliability, testing, performance, and security for production use.

Build and ship secure, production-ready CI/CD and AI-integrated features end-to-end. Design, implement, and iterate on products (e.g., hardened GitHub Actions, agent features), work closely with Product and front-end teams, make architectural decisions, and extend Chainguard's agentic AI capabilities into customer-facing experiences.