Diego Castronuovo

Building and running the platform end-to-end since day one of this live-streaming SaaS. Led the move to Kubernetes in 2020 with a strong GitOps + IaC culture; introduced Karpenter for smarter autoscaling, built a Kubernetes-native serverless framework to bypass Lambda limits, and run GPU workloads for streaming and AI tooling.

Own multiple back-end services (Java/Go/Python/Node), lead performance and scalability work, create load-testing suites, and implement multi-layer caching (including CloudFront for less-dynamic public APIs). Hands-on with CDN architecture and operations: cache strategy, invalidation, edge behavior, origin design, and the observability needed to troubleshoot real-world delivery issues.

Stack: Kubernetes, ArgoCD, Karpenter, Prometheus, Grafana, Docker, PostgreSQL, Java / Spring Boot, Node.js, Python (OpenCV, FFmpeg), Go, Firebase, GraphQL, REST, Redis / Redisson, Elasticsearch, HAProxy, CircleCI. AWS: Beanstalk, Fargate, Lambda, CloudFront, S3, ElasticTranscoder, CloudWatch.

Freelance consultant on a private cloud solution with OpenShift (Kubernetes), Docker and Kafka. Helped drive GitOps practices during the Kubernetes migration.

• CI/CD refactor using a GitOps approach
• Monitoring infrastructure (Prometheus and Grafana)
• Namespace quota management
• Docker image security scan set up with Anchore Engine

Lean startup experiments with cloud deployment and high-productivity tools (Java 8, Spring Boot, AWS, Firebase, GraphQL, REST, Elasticsearch, Docker, CircleCI, serverless and microservices architectures, Spring Data, MySQL).

Back-end Java development of GlassIG, a SaaS for corporate information governance. Involved in the migration from on-premise infrastructure to the cloud.

• Coaching the dev team (talks on unit/integration tests and Java common libraries)
• DSL for integration test automation
• Application security and code quality (Veracode, SonarQube)
• Configuration versioning system based on Zookeeper and XSLT
• Maven multi-module refactoring; Spring config refactor (XML to Java-based)
• Refactoring of legacy code

Stack: Spring, Hibernate, Maven, TDD, Zookeeper, AWS, Tomcat, Vagrant, Hazelcast, Jenkins, JIRA.

Development and maintenance of back-end batches and daemons (80%) and web applications (20%):

• Cash management (incoming and outgoing payments)
• Interface between the front (Swissquote platform) and back-end (Temenos T24 banking package)
• Documents automation: report generation and spooling

Stack: Java, Spring, Hibernate, Maven, Mercurial, TDD, JUnit, Concordion, jBehave, Spring Integration, JMS, SOAP/Axis, Stripes, Resin, Flex, ANSI C, Bash, Perl, HP Dialogue, Scala, Oracle DB, SQL, Atomikos, Quartz, jQuery, Scrum/Kanban, Jira, Confluence, Hudson/Jenkins, Linux & Solaris.