Job Description

Company DescriptionArηs is a fully independent group of companies specialized in managing complex IT projects and systems for large organisations, focusing on state-of-the-art software development, business intelligence and infrastructure services.We are composed of 13 entities across 6 countries that are unified by the Arηs Group, with more than 1750 consultants.This corporate structure enables us to respond quickly to market changes and customer requests, and to communicate and make decisions without layers of bureaucracy.Our success can be attributed to the synergy among our nine complementary entities, combined with our methodologies, which are based on the Rational Unified Process (RUP) and the Scrum agile software development framework.Established in 2016, the Greek entity Arηs Developments Hellas aims to extend Arηs Group activities dedicated to the European market providing high-quality services in Software Development, covering the entire application development lifecycle: starting with user requirements, business process redesign and specifications, to continue with development, testing and application maintenance.Job DescriptionWe are looking for a Senior System Engineer to join our growing team in one of the biggest European organizations.

• Deployment and application of hotfixes and patches to ensure system integrity and security.
• Administer Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) resources (Azure/AWS).
• Manage updates and upgrades for Windows Azure/AWS Virtual Machines (VMs).
• Upgrade and migrate Microsoft Windows Server instances to the latest OS versions.
• Monitor server performance, identify potential issues, and propose robust solutions.
• Implement automated configuration management for infrastructure using tools like Ansible and Terraform.
• Act as a second-tier responder to incidents, investigating root causes and applying mitigations or permanent solutions.
• Manage ENTRA ID, OAuth 2/OpenID, and SAML authentication protocols.
• Administer Windows Servers, including Virtual Machines, Active Directory (AD), ADFS, and Microsoft Identity Manager (MIM).
• Manage and optimize reverse proxy and load balancer equipment and services.

Advantageous

• Update management for Linux Azure/AWS Virtual Machines.
• Administration of Web Application Firewalls (WAF).
• Load Balancer and Application Gateway administration.
• Hardening of Windows/Linux servers to enhance security.
• Ubuntu Linux server management, including updates and performance tuning.

ARHS Group

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