Top Software Engineer Jobs in Spain

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.

Be the hands-on technical owner of the LiteAPI product: design, implement, and operate backend/API infrastructure, lead technical decisions, work closely with product, stakeholders, and customers, and mentor engineers while shipping high-impact features in a fast-moving startup.

Design, build, and troubleshoot scalable distributed backend systems (Ruby and Go). Improve recipe execution engine, integrate storage (Postgres, S3, DynamoDB, ClickHouse), ensure performance, durability, concurrency and security, write testable code, perform code reviews, and propose system improvements. Work may involve Rust/Wasm, microservices, and cloud integrations.

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.

The Senior Software Verification Engineer will verify embedded software for datacenters, ensure quality and reliability, and automate testing using Python. Responsibilities include developing test specs, conducting root cause analysis, and applying software industry best practices.

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.

Design, build, and optimize high-performance AI infrastructure systems to support intelligent agents, ensuring reliability and scalability for millions of users.

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.

Lead design and implementation of CI/CD and AI-related product features, owning end-to-end delivery. Build and secure CI/CD systems, work with containers, registries, and Kubernetes, extend agentic AI into customer experiences, guide architecture, and collaborate closely with Product and front-end teams.

Build and own end-to-end features for Chainguard's AI-enabled CI/CD and supply-chain security products. Design, implement, and iterate on integrations like hardened GitHub Actions, container tooling, and agentic AI features. Drive architectural decisions, collaborate with Product and front-end teams, and ship secure, production-ready developer tools.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

Build and maintain complex Ruby on Rails applications and server-side infrastructure, design and ship APIs, collaborate with UI, connectivity, and DevOps teams, write testable efficient code, evaluate system improvements, and participate in all phases of the development lifecycle.