Wagner Rehn Email & Phone Number

Charlotte, NC, US

Atlanta, GA, US

• During my time as a Site Reliability Engineer (SRE) at Greenlight, my primary areas of focus were managing the company's CI/CD strategy and enhancing the observability of our stack. Also, as an embedded SRE, I worked.
• Managed and implemented our CI/CD pipelines using GitHub Actions and ArgoCD, with Terraform and Helm Charts development. Additionally, served as code reviewer on multiple projects to ensure quality in the codebase.
• Enhanced our observability strategy for a wide range of frontend and backend services, leveraging Datadog and AWS CloudWatch. This included designing various aspects such as monitoring strategy, log shipping, alerting.
• Managed our Kubernetes ecosystem including configuration, troubleshooting and resource rightsizing (requests & limits), resulting in improved efficiency and cost reductions due to less wasted resources.
• Managed serverless applications deployed on AWS Lambda, which involved both development and troubleshooting.
• Participated in a 24/7 on-call shift rotation, where I played an active role in incident response in multiple occasions.

Fort Lauderdale, FL, US

• In this role at Citrix, I worked on creating Platform-as-a-Service tools and systems that met specific needs of various Site Reliability Engineering (SRE) teams within the company.
• Developed custom automation solutions using C# and Python, including an automated Certificates Management system to be used by SRE teams.
• Managed the hosting of our tools in Azure, which included frontend, backend, and databases.
• Created and maintained service deployment pipelines (CI/CD) for our tools, using: Jenkins, Artifactory, Hashicorp Vault, Python, Terraform, and Helm Charts. These pipelines were designed for a Kubernetes backend, Azure.
• Implemented and managed Pagerduty on-call strategy as code, using Terraform, for ateam of 50+ globally distributed engineers.

Fort Lauderdale, FL, US

• After five successful years as a Support Engineer at Citrix, I was invited to found the first XenApp and XenDesktop (Citrix DaaS) CloudOps team supporting Citrix’ flagship offering in the cloud. Later, this team became.
• Spearheaded the design and development of a version release control system called Meister, which not only improved the quality of life for our developers, release managers, and customers, but also virtually zeroed the.
• Managed our AWS and Azure environments.
• Participated in SOC 2 and FedRAMP certification processes, implementing controls and providing documentation.
• Continuously improved SRE/DevOps on-boarding process, including the documentation of services and SOPs, incident response strategies, service runbooks, and others.
• Developed scripting and automation solutions using C#, Python, and PowerShell.

Fort Lauderdale, FL, US

• In this role I began my career at Citrix. First as a frontline support engineer answering incoming calls from a queue, and later as a Senior Escalation engineer, I provided specialized support and expertise to the.
• Level 2 Customer support for a variety of products in the Citrix Products Portfolio.
• On-call incident response management with critical customer interactions and ELT visibility.
• C# development - some of my tools were included in the Official Citrix Supportability Pack
• Advanced debugging and log analysis for Windows Server, XenApp and XenDesktop.
• Microsoft Active Directory administration.

São Paulo, SP, BR

Curitiba, PR, BR