Senior Software Engineer ( Golang) - Barcelona

We are looking for a Senior Software Engineer to design, build and operate backend and platform services in a cloud native environment.The role focuses on distributed systems, event driven architectures and highly reliable APIs, with strong ownership from design to production.You will work on systems that handle high traffic, integrate with third party providers and internal platforms, and require strong observability, scalability and resilience guarantees.ResponsibilitiesDesign and implement backend services and platform components using Go and other modern backend languagesBuild and evolve event driven architectures using messaging and streaming technologiesDesign and maintain REST and GraphQL APIs consumed by internal and external clientsImplement service to service communication patterns with a focus on reliability, idempotency and fault toleranceOwn the full software lifecycle in a you build it, you run it environmentInstrument services with logs, metrics and traces, and actively use observability data for troubleshooting and improvementsPerform root cause analysis of production incidents and implement long term fixesCollaborate with cross functional teams to design scalable and maintainable solutionsMentor other engineers and contribute to engineering standards and best practicesTechnical stackBackend: Go, with experience in other backend languages considered a plusCloud and infrastructure: AWS or similar cloud providersContainers and orchestration: Docker, Kubernetes, HelmEventing and messaging: Kafka or equivalent streaming platformsData stores: SQL and NoSQL databasesObservability: metrics, logging and tracing systems, preferably OpenTelemetry basedCI/CD: automated pipelines and infrastructure as codeWhat we are looking forStrong experience building backend systems in production environmentsSolid understanding of distributed systems and cloud native architecturesHands on experience with event driven systems and asynchronous workflowsGood understanding of observability beyond dashboards, including data models and performance tradeoffsComfortable owning services in production and participating in on call rotationsPragmatic mindset with attention to code quality, testing and maintainabilityAbility to communicate technical decisions clearly and work collaboratively

Eventing and messaging: Kafka or equivalent streaming platforms Data stores: SQL and NoSQL databases Observability: metrics, logging and tracing systems, preferably OpenTelemetry based CI/CD: automated pipelines and infrastructure as code What we are looking for Strong experience building backend systems in production environments Solid understanding of distributed systems and cloud native architectures Hands on experience with event driven systems and asynchronous workflows Good understanding of observability beyond dashboards, including data models and performance tradeoffs Comfortable owning services in production and participating in on call rotations Pragmatic mindset with attention to code quality, testing and maintainability Ability to communicate technical decisions clearly and work collaboratively