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Backend Scala Developers in Spain

Built Scala and Java backend services for streaming platforms, including privacy workflows that propagate complete user-data deletion across distributed domains. Develops secure token services processing approximately 213 million daily requests at 70ms p95 latency and below 0.1% errors.

• Applied domain-driven design across microservice boundaries
• Used Typelevel functional programming for production services
• Integrated streaming access with connected vehicle platforms
• Automated development using Claude Code and opencode

Designed microservices-based architectures using Scala and Akka. Extensive experience in building scalable backend solutions with Spring Boot.

• Designed microservices-based architectures
• Experienced with Spring Boot
• Built scalable backend solutions

Pioneered distributed systems architecture, focusing on Kubernetes orchestration and Rust for high-performance computing. Led initiatives in developing and scaling cloud-native applications with extensive use of Scala and Python.

• Developed custom Kubernetes operators
• Optimized JVM performance for large-scale applications
• Engineered real-time analytics platforms using JavaScript

Designed and implemented a large-scale event-driven architecture for IoT data ingestion using Scala and Akka. Specialized in building concurrency models with Rust to support multi-threaded processing in high-load environments. Spearheaded the development of a real-time monitoring system for SQL databases, enhancing query performance by 30%.

• Developed a distributed logging system using Actix and Rust.
• Integrated TypeScript-based UI with backend services for seamless data flow.
• Led migration of legacy systems to cloud infrastructure, improving resilience.

Built scalable microservices architectures deployed on Kubernetes, optimizing for high availability and fault tolerance. Developed distributed systems for real-time data processing in the IoT domain, leveraging Go and Scala. Spearheaded efforts in implementing CI/CD pipelines for seamless deployment and integration.

• Implemented event-driven architecture using Kafka and RabbitMQ
• Enhanced application performance through advanced caching strategies
• Designed RESTful APIs with comprehensive testing frameworks

Built a full-stack web application using Scala and TypeScript, focusing on seamless user experience. Developed a real-time notification system using Rust for high-frequency trading platforms. Created a data visualization dashboard with Haskell for complex datasets.

• Integrated microservices with message brokers for asynchronous processing
• Utilized Python for backend data processing tasks
• Implemented end-to-end testing frameworks for web applications

Engineered data pipelines for processing terabytes of e-commerce transaction data, enhancing data accessibility and insights. Built ETL processes for a healthcare analytics platform, improving data quality and processing efficiency. Developed a recommendation engine for a retail platform using collaborative filtering techniques.

• Automated data validation processes using Scala and Apache Spark
• Implemented data warehousing solutions with optimized query performance
• Created a scalable data ingestion framework using Kafka and Flink
• Streamlined data visualization dashboards with real-time analytics