A tech company with a business-driven DNA, founded in Barcelona, with the vision of becoming a general leader in the creation of Digital Hubs for major corporations worldwide.We dont just build digital products we help shape the digital business strategybehind them. Were trusted not only to deliver, but to leaddriving innovation, challenging assumptions, and defining the future of digital for globalorganizations.We work with agile methodologies, embracing continuous iteration as our mantra. Ourmultidisciplinary teams manage the entire end-to-end lifecycle of our digital products, and we aredynamic and business oriented.Job SummaryWe are looking for a highly skilled Backend Integrations Engineer with expertise in WSO2 to design,develop, and manage our API ecosystem.

This role will be responsible for managing the APIdevelopment lifecycle, ensuring adherence to governance standards, optimizing API performance,and enabling seamless integrations across our digital landscape.The ideal candidate will have deep experience in API development, security, and monitoring, alongwith a strong understanding of API governance, OpenAPI, RAML, JSON:API standards,and Ballerina, the native language for WSO2 integrations.Define API contracts using OpenAPI, RAML, JSON:API, and other API definition standards.Monitor and analyze API usage to optimize performance and detect anomalies.Work closely with DevOps teams to deploy APIs within CI/CD pipelines.Optimize API Gateway configurations for performance,



load balancing, and failover mechanisms.Implement API monitoring and analytics solutions using WSO2 Analytics, ELK, or similar tools.Troubleshoot API performance issues and implement improvements.Define and track key performance indicators (KPIs) to measure API effectiveness.RequirementsAt least five years of experience in API development and management, with expertise in WSO2API ManagerStrong knowledge of API design standards including OpenAPI, RAML, JSON:API.Proficiency in programming languages such as Java, Ballerina, Python, or Node.Js.Experience with RESTful APIs, GraphQL, and microservices architecture.Hands-on experience in API analytics, logging, and monitoring tools.Knowledge of CI/CD pipelines, Docker, Kubernetes, and cloud-based API deployments.Familiarity with message queues, event-driven architectures (Kafka, RabbitMQ, etc.). Ability to work in an agile, fast-paced environment.Proficiency in both Spanish and English.Experience leading API development teams or mentoring junior developers.Nice to HaveExperience with WSO2 Identity Server for API security and identity management.Transformation is in our DNA, and questioningthe status quo is what gets us out of bed in the morning. Were a high-performing team that holds itself to higherstandards, always going the extra mile to deliver impact, not just output, and were like the postmanrain or shine, we always deliver.

📌 Integration Engineer Mulesoft (Barcelona)
🏢 Melza Consulting
📍 Barcelona