Senior Systems Administrator

1 week ago

Dublin, Dublin City, Ireland Ryanair Full time

Ryanair Labs are currently recruiting for a Systems Administrator to join Europe's Largest Airline Group

This is a very exciting time to join Ryanair as we look to expand our operation to 800 aircraft and 300 million guests within the next 10 years.

Ryanair Labs is the technology brand of Ryanair. Labs is a state of-the-art digital & IT innovation hub creating Europe's Leading Travel Experience for our customers.

The Role

We are seeking an experienced and highly skilled Wintel Systems Engineer to join our IT Infrastructure team. You will be responsible for maintaining and optimizing Wintel-based systems, supporting our cloud initiatives, and ensuring the security and availability of our critical infrastructure.

Key Responsibilities:

Infrastructure Management:

- Design, implement, and manage Windows Server based environments.
- Knowledge of VMWare Infrastructure configuration.
- Monitor and maintain system performance, ensuring optimal uptime and availability.
- Troubleshoot and resolve complex issues within the Windows environment.
- Ensure security and vulnerability management is a core function

Citrix NetScaler Administration:

- Configure, maintain, and optimize our Citrix NetScaler Infrastructure for load balancing, Content Switching, GSLB, and security operations.
- Manage Citrix NetScaler policies, upgrades, and patches.
- Troubleshoot and resolve NetScaler issues, ensuring seamless uptime of applications.

Cloud Infrastructure (AWS and Azure):

- Confidently design, manage, and optimize services in our Azure environment adhering to Landing Zone Principles.
- Knowledge of Entra AD and Microsoft 365 platforms desirable.
- Skilled in transitioning existing on-prem workloads to the cloud where feasible.
- Implement and manage Cloud infrastructure using IaC tools Cloud formation, Terraform or Ansible
- Monitor and maintain cloud infrastructure, ensuring scalability, security, and cost-efficiency.
- Collaborate with development teams to design and implement cloud-based solutions.

SSL Certificate Management:

- Manage the lifecycle of SSL certificates; from procurement all the way to revocation.
- Ensure compliance with security standards and best practices for SSL certificates.
- Troubleshoot SSL-related issues across various systems and services.

DNS Management:

- Configure, manage, and maintain DNS records and services.
- Ensure DNS services are secure, reliable, and efficient.

Security and Compliance:

- Implement and maintain security best practices across Wintel, Citrix, DNS, Certificate and cloud environments.
- Ensure systems comply with relevant industry standards and regulations.
- Perform regular security audits and vulnerability assessments and confidently mitigate these issues within agreed timelines.

Documentation and Collaboration:

- Create and maintain detailed documentation for all systems and processes.
- Collaborate with cross-functional teams, including networking, security, and development teams, to support infrastructure needs.
- Provide technical support and guidance to junior engineers and other team members.

Requirements

Education and Experience:

- 5+ years of experience as a Wintel Systems Engineer or in a similar role.
- Strong experience with Citrix NetScaler configuration and management.
- Hands-on experience with SSL certificate management.
- Proficient in DNS management and troubleshooting.
- Extensive experience with cloud platforms focused in AWS and Azure.

Technical Skills:

- Deep understanding of Windows Server environments (up to Server 2022).
- Proficiency in Citrix NetScaler, including load balancing, VPN, and application delivery.
- Solid knowledge of SSL/TLS protocols and certificate management.
- Strong DNS management skills, including configuration and troubleshooting.
- Intense experience with AWS and Azure cloud services; including (but not limited to) Azure Landing Zone, Entra AD, M365, CloudFront, CloudFormation, IAM, Route53.
- Understanding of networking principles, firewalls, and security best practices.

Preferred Certifications:

- Microsoft Certified: Windows Server and/or Azure certifications.
- AWS Certified Solutions Architect or AWS Certified SysOps Administrator.
- Citrix Certified Associate or equivalent.

Benefits

- Competitive Salary
- Work with cutting edge technologies
- Hybrid working options.
- Fast-paced environment
- Further benefits depending on location

Competencies

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