Top Software Engineer Jobs in Spain

Own backend engineering goals for the Recoveries team, building scalable loan recovery systems and strategies. Lead delivery through ambiguity, collaborate with product, design, analytics, and risk stakeholders, and improve system reliability, observability, quality, and operational readiness. Participate in on-call support, establish engineering standards, resolve technical and business issues, and mentor team members while designing batch and asynchronous workloads.

Design, build, test and operate backend microservices in Java/Spring Boot for a fintech product. Collaborate with Product in Agile squads, design/evolve architectures (cloud/serverless), implement event-driven systems (Kafka), write tests, participate in code reviews and releases, maintain monitoring/alerting, and apply enterprise-authorized AI-assisted development responsibly to improve delivery and code quality.

Build, maintain, scale, and support globally distributed streaming services handling high-throughput platform data. Develop automation and tooling for reliability, scalability, and operational stability; participate in architecture, Agile team processes, shared code ownership, and on-call rotations. Work with streaming platforms, distributed systems, concurrency, production scaling, Kubernetes, and observability solutions.

Design, develop, and maintain UI platform features using TypeScript, React, RESTful APIs, microservices, and cloud-native technologies. Improve performance, scalability, reliability, and security; contribute to architecture and secure coding practices; develop automated tests; enhance CI/CD pipelines; participate in agile ceremonies and code reviews; and collaborate across engineering and product teams.

Work on-site with government customers to design and build data-driven solutions. Responsibilities include full-stack engineering, data integration at scale, architecture design, coding, and collaborating with technical and non-technical stakeholders. Requires adapting quickly, independently owning projects, and deploying solutions that directly impact critical operations.

Design, build, and maintain backend collections systems to manage delinquent loans. Collaborate with product, risk, and engineering teams, deliver features in phases, support operations and on-call rotation, instrument monitoring, and participate in hiring and team growth.

Design and implement cloud-native microservices for the Miles Enterprise platform. Translate domain models into service architectures, build RESTful APIs, design databases and ORMs, apply CI/CD and containerization, prioritize security in SSDLC, collaborate with API consumers, and mentor junior engineers.

Build and maintain backend collections systems to manage delinquent loans, implement recovery strategies, ensure high availability and reliability, collaborate with product and risk teams, participate in on-call rotation, write well-tested extensible code, and contribute to team growth.

Design, implement, and operate fault-tolerant distributed systems and foundational platforms at internet scale. Build horizontally scalable, multi-tenant services that ingest, store, analyze, and query billions of events per second. Develop backend systems using Go, Java, Rust, or C++, alongside Kafka, Redis, Cassandra, Elasticsearch, and other open-source technologies. Own production services, optimize durability, availability, latency, performance, and operability, and use AI coding tools effectively.

The Software Engineer will design and maintain backend APIs for Speechify's services, ensuring scalability and performance while collaborating with cross-functional teams.

As a Software Engineer on the Platform team, you'll design, develop, and maintain backend APIs, enhance system performance, and collaborate across teams to align architecture with product strategy.

The role involves finding audio data sources, operating and extending cloud infrastructure, and collaborating to enhance data quality and models.

Design, develop, and maintain robust backend APIs, oversee API performance, collaborate on B2B solutions, and align architecture with product strategy.

Designs, develops, and maintains enterprise .NET applications, APIs, data pipelines, analytics solutions, and responsive web interfaces. The role involves working with AWS, complex datasets, databases, ETL, reporting platforms, CI/CD, testing, and cloud-native architectures. The engineer collaborates with product, architecture, QA, and business stakeholders to deliver scalable solutions, troubleshoot defects, and support production systems.

Build and evolve Rerun’s open-source viewer, cross-language SDKs, and integrations with Rerun Hub. Develop high-performance interfaces for large-scale multimodal data, optimize workflows across desktop and web, make full-stack architecture decisions, and collaborate with backend, Hub, design, customers, and the open-source community. The role involves UI development, rendering, data handling, infrastructure, real-time applications, visualization, and performance optimization.

Develop and optimize software solutions for industrial additive manufacturing in an agile team. Responsibilities include designing algorithms, data structures, and software subsystems; debugging complex issues; benchmarking and improving performance, stability, efficiency, and scalability; and contributing to software quality and documentation. The role uses Vue.js, TypeScript, Python, C++, MongoDB, Docker, and automated development tools.

Build and maintain high-volume payment services, write testable code, improve reliability and performance, investigate production issues, collaborate across product and engineering teams, and explore AI-enabled engineering tools to boost productivity.

Design, build, and maintain complex, high-performance Angular frontend applications. Architect reusable component libraries and state management, integrate REST and real-time data, optimize performance and accessibility, write tests and participate in code reviews, and mentor junior engineers.

Develop and maintain scalable frontend web applications and data visualization platforms using React, Redux Toolkit, and Vite. Collaborate with cross-functional teams, implement features, write tests, conduct code reviews, troubleshoot issues, and support RESTful APIs. Contribute to agile processes, accessibility, user experience improvements, and continuous development while using AI tooling responsibly and staying current with modern web technologies.

Design, build, and operate a large-scale Kubernetes platform: ensure high availability and performance, automate platform delivery, develop custom Kubernetes Operators in Go, manage production incidents, and run Day 1/Day 2 cluster operations with Helm and GitOps tooling.

Design, implement, and test cloud-based server-side software in Python. Optimize code performance, maintain unit and integration tests, and work with AWS, Docker, DevOps, and CI/CD tools. Preferred experience includes reverse engineering public APIs, PostgreSQL, Django ORM and DRF, network protocols, and web or mobile technologies.

The Software Engineer will join a product squad to develop and maintain functionalities on the 360Learning platform, focusing on JavaScript technologies and clean architecture.

Leads the design, development, maintenance, testing, troubleshooting, and optimization of complex full-stack software applications. Collaborates with cross-functional teams, documents technical requirements, resolves IT issues, prepares data, supports end users, and applies software architecture, microservices, database, CI/CD, containerization, monitoring, and Agile engineering practices.

Design and develop Java services within distributed applications for document and image processing. Collaborate with the team and product owner, apply maintainability, testability, performance, security, and quality standards, participate in code reviews, and improve the platform. The role requires Java and Spring Boot expertise, SQL and NoSQL database knowledge, RabbitMQ experience, microservices familiarity, and fluency in English and Spanish.

Design and develop scalable backend systems for a B2B application using Java and Spring. Participate in architectural decisions involving performance, security, and scalability; apply agile practices; mentor developers; optimize relational database performance; and support cloud and DevOps initiatives, particularly on AWS.