Top Software Engineer Jobs in Barcelona

Lead the design, development, maintenance, testing, optimization, and troubleshooting of complex full-stack software applications. Collaborate with cross-functional teams, document technical requirements, resolve issues, prepare data, support users, and develop reliable APIs and microservices. Apply C#, .NET, Angular, SQL, messaging systems, cloud-native engineering practices, CI/CD, containerization, monitoring, and Agile methodologies while helping establish responsible AI-enabled engineering workflows.

Lead the technical vision and development of Elasticsearch’s core search infrastructure, including indexing, query execution, retrieval, and relevance. Research search algorithms and data structures, contribute to Lucene, guide technical roadmaps, mentor expert engineers, and collaborate across distributed teams. Build and optimize high-performance distributed search systems while serving as a domain authority for Elasticsearch capabilities.

Develop and maintain RESTful and event-driven APIs for a warehouse management platform. Build scalable backend services with Node.js, optimize SQL queries and stored procedures, integrate internal and external systems, collaborate with front-end, mobile, and platform teams, and support debugging, monitoring, documentation, and defect resolution.

Build and optimize scalable backend services and ETL/ELT data pipelines. The role involves Python development, data ingestion and transformation, SQL and NoSQL schema design, query optimization, automated testing, data quality checks, CI/CD, Docker-based deployments, and production ownership. The engineer will collaborate across the organization and process financial data within a bilingual English- and Spanish-speaking environment.

Design, build, test, document, deploy, and maintain mobile SDKs that run network tests across Android (and optionally iOS/embedded). Collaborate on architecture, ensure reliability/portability, integrate analytics, and support third-party developers and device manufacturers.

Build and maintain production-grade iOS applications using Swift and SwiftUI, integrating AI features through backend APIs. Design reliable AI interaction patterns, optimize performance, memory, battery, and latency, capture user feedback for AI evaluation, and collaborate with backend and ML engineers. Maintain App Store quality, monitor production issues, and resolve root causes.

Design and operate customer-facing networking APIs, Python orchestration control planes, and automation that configures routers across global points of presence. Build resource allocation, job queues, retries, rollback, reconciliation, BGP, WireGuard, GRE, NAT, firewall, DNS, cloud interconnect, and Envoy xDS integrations. Own production monitoring, incident response, billing synchronization, API compatibility, and network configuration drift detection across application and infrastructure layers.

The Staff Software Engineer will own technical vision across teams, contribute hands-on, and lead initiatives to enhance the platform's reliability and capability, collaborating across functions.

Lead the architecture and evolution of scalable ETL and data-processing systems for customer product catalogs. Design reliable distributed systems, improve throughput and latency, strengthen fault tolerance and observability, and guide technical direction across teams. Mentor senior engineers, conduct architecture reviews, lead cross-functional initiatives, influence hiring and onboarding, and help shape the engineering organization’s long-term technical vision.

Emburse seeks a Software Engineer III to enhance enterprise SaaS applications, mentor developers, and improve software quality through collaborative and agile practices.

The role involves designing, developing, and maintaining full stack applications, focusing on modern APIs, cloud services, and collaboration with teams.

As a Software Engineer, you'll develop software for Ceph and distributed storage, collaborating with a global team to enhance cloud solutions.

Join the team to design and develop backend and frontend features using Django/Python and React. Produce production-quality code, implement new features, work with PostgreSQL, DynamoDB, Redis, Kubernetes and AWS, and follow agile weekly releases. On-site in Paris with initial training in Barcelona.

Canonical is hiring a Software Engineer to develop features for Kubernetes, focusing on operators and integrations while collaborating in a distributed team.

Develop and maintain web-service features, design backend APIs and business logic, review code, and improve production infrastructure reliability, redundancy, and resilience. The role requires strong programming, database design, web-service API, AWS, Linux, Docker, Kubernetes, and continuous deployment experience, along with communication, analytical, and teamwork skills.

Build and operate Alan’s privacy platform, including the GDPR Orchestrator for data retention, deletion, anonymization, and pseudonymization. Develop reliable APIs, contracts, safety mechanisms, observability, documentation, templates, and self-service tooling. Enable engineering teams to manage their own data rules, coordinate with legal and security stakeholders, and evolve privacy capabilities across data stores and third-party systems. The role involves hands-on Python and TypeScript development, production ownership, on-call operations, and cross-team technical leadership.

Provide technical support for applications: investigate and resolve issues, develop and implement interfaces, create support documentation, collaborate with Design/Test/Dev teams, estimate resources, and monitor project performance.

Investigate and resolve verified application issues, develop and implement interfaces, create technical support documentation, collaborate with design, test and development teams, provide user support, estimate resource timings, and monitor project performance to meet goals.

Design, develop, and maintain scalable Python/Django backend services and RESTful APIs for financial products. Implement data models, write tests, optimize performance, ensure availability and security, participate in code reviews, and collaborate with cross-functional teams to deliver features and maintain production systems.

Design and implement complex customer-facing frontend features using TypeScript and React. Provide technical leadership, mentor junior engineers, drive frontend architecture and best practices, improve performance and accessibility, partner with product/design, integrate with backend APIs, and manage technical debt and scalability.

Develop and maintain open-source, silicon-optimized AI/ML inference application packages (Inference Snaps) for Linux/Ubuntu Core. Debug, write high-quality code, review upstream contributions, secure and optimize local inference deployments across embedded devices to gateways, and collaborate with a distributed team and stakeholders.

We are seeking a software engineer to build and validate resilient distributed systems, enhance CI pipelines, and improve testing strategies for cloud applications.

Design, implement, and maintain cross-platform C++ features for Multipass on macOS and Windows. Lead architecture, mentor peers, write high-quality tested code, review contributions, debug user issues, collaborate with a distributed team, engage the open-source community, and support customers.

Build and maintain backend-first features and integrations for Triptease's marketing channels. Work across the full stack (primarily backend), design scalable distributed systems, implement CI/CD on cloud platforms, collaborate closely with product teams, pair program, write tests (TDD), and contribute to squad strategy and product quality.

The Software Engineer will design and develop software architectures, solve complex challenges, lead technical directions, and collaborate with different teams to optimize efficiency and impact.