Marcos Rosse

Comcast NBCUniversal's Global Streaming Technology group, behind Sky UK, Sky Deutschland, Sky Italia, Peacock (US), SkyShowtime and NOW TV. My team sits in the middle: we run on the shared EKS clusters and Akamai CDN owned by other platform teams, and the application teams we support run on what we provide.

• Assessed how a load balancer change by the EKS platform team would affect our edge configuration, and updated origin settings (SNI) across more than 30 Akamai properties ahead of the cutover.
• Wrote a Python Prometheus exporter for GitHub service health (Git operations, Actions, pull requests, issues), with dashboards and alerts, after GitHub outages kept disrupting the team's work.
• Automated credentials for new RDS and DocumentDB instances: admin and user passwords are generated and stored in HashiCorp Vault, and Terragrunt reads them at creation time, so nobody handles a secret by hand.
• Support the applications through releases, incidents and live sports peaks such as NFL games, and share the on-call rotation.
• Own their observability and alerting with Prometheus, Thanos, Grafana and Alertmanager, including SLOs, certificate expiry checks, and alert routing to Slack and incident tooling.
• Manage the Akamai configuration they use: delivery properties, Global Traffic Management (GTM), Cloudlets, WAF security policies and TLS certificates.
• Deploy and run the AWS resources they need as code with Terraform and Terragrunt, maintain the GitHub Actions and Jenkins pipelines onto the shared EKS clusters, scale non-production down outside traffic windows to cut cost, and patch vulnerabilities on hosts and in code.

Consultancy for telecom operators.

• Led the migration of monolithic applications from legacy infrastructure to OpenShift for a telecom operator in the Middle East.
• Helped design its disaster recovery environment.
• Unblocked a stalled Kubernetes upgrade for a European telecom operator.

Consultancy for a Swiss private bank.

• Moved the bank's workloads from Azure to an on-premises OpenShift platform.
• Standardised CI/CD for more than 50 microservices.
• Built environments as code with Terraform, Helm and Kustomize, and ran the platform's secrets, messaging and data services.
• Mentored development teams on DevOps practices; promoted for the results.

Consultancy for one of Brazil's largest banks.

• Automated developer onboarding, from repositories and pipelines to dashboards, monitoring and infrastructure.
• Built CI/CD pipelines for digital banking services.
• Provisioned and maintained API gateways.
• Automated OpenStack provisioning with Terraform for an internal platform as a service.

Enlisted IT role during military service.

• Ran Linux servers on XenServer and managed more than 100 Ubuntu desktops with Ansible.
• Set up central logging and monitoring for the unit's network.
• Ran the firewall, web proxy, backups and directory services (LDAP and Samba).