System & Network Administrator

Who we are

nvisionist S.A. is an AI-native deep tech company, internationally recognized for its leadership in artificial intelligence, computer vision, and autonomous dual-use systems. A multi-award-winning organization with more than 30 international distinctions, nvisionist develops advanced digital technology solutions that combine innovation, sustainability, and applied intelligence.

Its pioneering portfolio includes:

• nvbird® – AI-powered bird and bat detection & collision avoidance system for wind farms (onshore/offshore)

• nvFirePro® – fully autonomous AI system for early wildfire detection and prevention

• nv3Dmap® – advanced 3D mapping and environmental analysis platform

• nvSmartCheck® – AI-based intelligent inspection and predictive maintenance solution

• Advanced USV & UAV Civil Protection platforms, co-developed with Technohull, integrating AI autonomy for maritime and aerial operations

nvisionist is a member of the Public Power Corporation Group (PPC S.A.), the largest energy organization in Southeastern Europe, and an SAP PartnerEdge company, delivering large-scale cloud, cybersecurity, and SAP S/4HANA transformation projects.

With a presence across four continents, a strong R&D culture, and a team of highly skilled AI engineers, data scientists, and software architects, nvisionist drives the convergence of AI, sustainability, and Civil Protection innovation — creating intelligent, autonomous, and future-ready systems that #AddsValueToTheGreenEnergy.

Role Description

nvisionist is seeking a skilled Network Systems Administrator to manage, maintain, and optimize the company’s network infrastructure, ensuring reliable connectivity and security across all systems. The ideal candidate will troubleshoot network issues, implement system upgrades, and support the organization’s IT operations to drive efficiency and innovation.

Responsibilities

· Implementation, configuration and maintenance of network systems - IP address auditing.

· Maximizes performance by troubleshooting system & network problems & outages and scheduling upgrades.

· Identifies potential issues and implements solutions proactively.

· Secures network system by establishing and enforcing policies and defining and monitoring access.

· Monitoring of MOC/NOC platforms.

· Maintaining ticketing system (Jira).

· Design and install servers, storage systems, and software.

· Windows Operating Systems (Desktop/Server environments), installing/maintaining

· Linux (Ubuntu), Installing/maintaining.

· Monitor system performance and ensure seamless operation.

· Identify and resolve system and software issues.

· Apply updates and upgrades to software and systems for security and optimization.

· Create and maintain system documentation, including operational procedures and guidelines.

· Provide expert-level support through escalated technical support.

· Be flexible for occasional business trips.

Typical Requirements

• A degree in computer science or a related field.
• Minimum 5 years of first-hand experience handling system/network infrastructure and systems lifecycle management

Skills

• Ability to work in a fast-moving team which values communication & team spirit.
• Strong technical skills and knowledge of operating systems and system management technologies.
• Problem-solving and analytical thinking abilities.
• Collaboration and communication skills
• Self – motivated, strong time-management skills with ability to interact with multiple projects and daily issues following ISO compliances
• Excellent written and verbal communication skills, in both Greek & English, especially with technical audience

Benefits

• Friendly and pleasant working environment.
• Being part of an innovative and expanding tech company.
• Opportunities for professional growth and development.