Site Reliability Engineer (SRE)

GRNET - National Infrastructures for Research and Technology, is an entity of the Greek Government, operating under the Ministry of Digital Governance. It provides advanced network and cloud computing services to academic and research institutions, educational entities at all levels, as well as to public, broader public, and private sector agencies.

GRNET has a wide service portfolio, covering a number of sectors. A brief list is provided below:

• GOV.GR: Unified Portal for all Government-related Digital Services (Ενιαία Ψηφιακή Πύλη).
• RE-Cloud: Cloud Services for Research and Education (~okeanos, ViMa).
• Networking: GRNET acts as the ISP for Greece's research and academic institutions.

GRNET maintains its infrastructure across multiple data centers distributed throughout Greece, primarily utilizing Free and Open Source software such as Kubernetes, ArgoCD, GitLab CI, Debian GNU/Linux, OpenStack, Ceph, Ansible and more. GRNET adopts the Site Reliability Engineering approach.

Our SRE department is divided into three groups: Services, Platform, and Cloud. As an SRE, you will be assigned to one of these groups, depending on the current needs, your preferences, and expertise. Here is a summary of the responsibilities of each group:

• Cloud: Design and implement GRNET's new Cloud infrastructure utilizing OpenStack and Kubernetes.
• Platform: Design and manage our Internal Developer Platform, based on Kubernetes.
• Services: Manage services, pipelines and tooling for use on top of our Internal Developer Platform.

Whether you have a Systems or Software Engineering background, we are seeking SREs with a strong DevOps mindset that are willing for the following:

• Design and implement fault-tolerant, scalable and distributed services.

• Bring your technical opinion and vision to the table: It matters.

• Handle problems that require under-the-hood investigation, whether it is called legacy infrastructure, technical debt or unfamiliar technical territory.

• Lead projects within the team.

• Able to collaborate with multiple people and teams based on a policy of openness.

• At least three (3) years of professional working experience as an SRE or Software Engineer with emphasis on infrastructure.
• Bachelor's degree in Computer Science or a related field, alternatively, comparable professional experience.
• Experience on designing distributed services at scale; whether on-premises or in the cloud.
• Experience on running containerized workloads on Kubernetes.
• Knowledge of DevOps practices that bridge gaps, promote communication and speed up processes.
• Knowledge of Linux internals: Words like cgroups, tcpdump, inode, procfs should sound familiar to you.
• Knowledge of at least one (1) programming language.
• Working-level Proficiency in Greek. The role involves communication with Greek-speaking stakeholders and teams.

• Experience with Data Center and Linux networking concepts and internals.

• Experience with on-premises Cloud infrastructure (OpenStack, OpenNebula, etc).

• Related personal projects or contributions to open-source projects.

While this position is fully remote in terms of day-to-day tasks, candidates are required to be located in Athens, Greece (or within a commutable distance), to accommodate periodic on-site meetings and team collaboration events.