Infrastructure Engineer/Administrator (Citrix/Omnissa/Vmware)

Company Description

Arηs 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 8 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 Description

• Creating Infrastructure level Designs for the implementation/adaptation of enterprise application/solutions, as well as creating the equivalent Operation guidelines;
• Leading and/or participating in technical negotiations and decisions about the best way to implement new solutions;
• Creating well detailed network flow designs and their further documentation to support implementation;
• Liaising with different specialised technical teams in order to verify the validity of the envisaged infrastructure design;
• Performing, together with the persons responsible for the application/solution, the Proof of Concept and the first deployment on a non-production environment;
• Performing the administrative activities to put such designed in the Operational Production cycle (creating tickets, negotiating time lines, etc.);
• Acting in the expert role of Infrastructure Engineer, coordinating the different Operational Engineers to implement the designs created and bring them to completion;
• Being responsible to coordinate the members of the Quality Assurance team in order to test the implemented infrastructure.

Qualifications

• Minimum 3 years of experience in creating Technical Designs (including High Level as well as Detailed level), leading to actual implementation (including processing power, network segmentation, security principle of least access, monitoring characteristics, backup and restore, etc.), with deep expertise in Citrix Virtual Apps and Desktops (CVAD), Citrix Provisioning Services (PVS), and Omnissa Horizon mainly virtual desktop infrastructure (VDI) and application delivery solutions also covering proven experience in presenting and defending the solution created to stakeholders of various profiles (business, technical, management)
• Minimum 5 years of hands-on experience in Citrix and Horizon environments.
• • Proven track record of designing and delivering enterprise VDI and application delivery solutions.
  • Proven track record of configuring and optimizing Citrix components (Delivery Controllers, StoreFront, Director, Citrix Gateway).
  • Proven track record with hybrid environments and cloud-based VDI solutions.
  • Proven track record monitoring and analytics tools (Citrix Director, VMware vRealize).
  • Proven track record of securing Citrix environments using best practices and assessing current infrastructure in order to identify optimization opportunities.
  • Proven track record of managing and optimizing instant clone pools and profile management.
  • Proven track record of implementing CVAD / PVS / Horizon deployments or upgrades.
  • Proven track record of integrating PVS / Horizon with hypervisors (VMware vSphere).

• Minimum 5 years of experience in the installation, implementation and configuration of Server Operating Systems (MS Windows and/or Linux) in physical or virtual format, including the interaction with Infrastructure at large (File shares with CIFS/SMB and NFS, secure LDAP integration, Public Key Certificates, Service accounts, API’s, etc.)
• Minimum 2 years of experience in adapting Infrastructure Designs, applying/devising Security hardening for each layer of the solution (hardware/devices, Operating System, Applications/middleware), including leveraging well-known frameworks (e.g. CIS guidelines), , including the troubleshooting needed due to the consequences of hardening
• Minimum 3 years of experience with documenting technical specifications of solutions, in terms of infrastructure design material (deployment views, server and network specifications, etc.) as well as devising and documenting operational procedures
•  Minimum 3 years of experience in negotiation on a technical level with different stakeholders (e.g. ICT Security, Governance, Data Protection, ICT Operations/Solution teams, Project Management, etc.) and incorporating the results on the design deliverables
• Good knowledge in creating Technical Designs (both at a High Level and at a Detailed level), leading to actual implementation
• Good knowledge of integrating Citrix and Horizon infrastructure with VMware vSphere and Microsoft Active Directory. Configuring Connection Servers, UAGs, and Dynamic Environment Manager. Good knowledge of managing and optimising instant clone pools and profile management. Good knowledge of integrating Horizon with identity providers
• Good knowledge of implementing new CVAD / PVS deployments or upgrades.
• Knowledge of integrating PVS with hypervisors (VMware vSphere).
• Good knowledge of managing delivery controllers, StoreFront, and Director.
• Integrating Citrix with identity providers.
• Good knowledge of securing Citrix environments using best practices and assessing current infrastructure in order to identify optimisation opportunities
• Good knowledge of installation, implementation and configuration of Server Operating Systems (MS Windows and/or Linux) in physical or virtual format, including the interaction with Infrastructure at large (File shares with CIFS/SMB and NFS, secure LDAP integration, Public Key Certificates, Service accounts, API’s, etc.)
• Good knowledge of implementing (applying/devising) Security hardening for hardware/devices, Operating Systems, Applications/middleware, including leveraging well-known frameworks (e.g. CIS guidelines), including the troubleshooting needed due to the consequences of hardening

Desirable: 

• Good knowledge in configuration of application servers to make usage of the different authentication systems, encryption in traffic, file access and database access. Ability to troubleshoot all of the mentioned components individually and as a set