Infrastructure & Network Engineer

stellar //

Infrastructure & Network Engineer at Stellar Telecommunications responsible for IT infrastructure operations and security across network and services. Ensuring continuous improvement and operational resilience in a dynamic environment.

Posted 7/22/2026full-timeBruges • 🇧🇪 BelgiumMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in infrastructure and network engineering, with a strong focus on security, monitoring, and operational excellence. Proficient in managing Microsoft 365, virtualization environments, and implementing robust backup and restoration solutions.

Highest-signal resume keywords

Infrastructure And Network EngineeringMicrosoft 365 AdministrationZabbix Monitoring ImplementationCCNA CertificationSecurity Assessment And Remediation

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Applicant Tracking System Keywords

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Hard Skills

NetworkingFirewallsVirtualizationBackup And RestorationMonitoring PlatformsIdentity And Access ManagementNetwork SecurityVLANsRoutingNAS Management

Soft Skills

AutonomyResponsivenessService MindsetDocumentation DisciplineMethodical Approach

Tools & Technologies

ZabbixGrafanaElastic StackPfSenseProxmoxVMwareSNMPIPMIMicrosoft Entra IDTicketing Platform

Certifications & Qualifications

CCNACCNPCompTIA Security+

Industry Keywords

ISO/IEC 27001CybersecurityHigh-Growth CompanyStartup EnvironmentSecurity Governance

Tech Stack

Tools & technologies

Cyber SecurityDNSFirewallsGrafanaNFSSwitchingVMware

About the role

Key responsibilities & impact

Own the operation, maintenance, security, observability and continuous improvement of Stellar's corporate and on-site IT infrastructure.
Provide hands-on technical ownership of the physical network, firewalls, Wi-Fi, virtualization hosts, shared storage, backup and restoration, monitoring platforms, and Microsoft 365 and Microsoft Entra ID services.
Independently assess the current environment, identify operational and security risks, define improvement and remediation plans, and implement the agreed actions.
Operate and maintain Stellar's network, firewalling and Wi-Fi across sites and network segments.
Manage the certificate lifecycle for internal services and FQDNs, and apply network and infrastructure security best practices.
Perform structured security assessments of infrastructure, identity services, applications and service dependencies; identify vulnerabilities and operational risks; define remediation plans; and implement and track approved actions.
Operate and maintain Microsoft 365 and Microsoft Entra ID, including identity and access management, role and privilege reviews, authentication controls, user lifecycle processes and security configuration.
Operate and maintain the virtualization host cluster, including hosts, high availability, heartbeat, cluster networking, virtual networks, SDN/VXLAN and cluster trunks, and contribute to the evolution of the architecture.
Implement, operate and supervise on-site and off-site backup solutions; define backup policies; execute regular restore tests; and maintain clear recovery procedures and evidence.
Design, implement and operate monitoring and observability using Zabbix, Grafana and Elastic Stack, complemented by SNMP and IPMI where appropriate.
Handle requests and incidents through the ticketing platform, perform root-cause analysis where appropriate, apply firmware updates and security patches, and resolve infrastructure issues.
Maintain accurate inventory, network diagrams, configurations, technical documentation, operating procedures and recovery documentation.

Requirements

What you’ll need

At least five years of hands-on experience in infrastructure and network engineering within a high-growth company or startup environment.
Strong command of networking, including switching, VLANs, trunks, routing, IPv4/IPv6, DNS, Wi-Fi and network segmentation.
CCNA certification, or a demonstrably equivalent level of networking knowledge and practical experience.
Strong experience with open-source or equivalent firewalls, such as pfSense, including filtering, VPN, DMZ and high-availability configurations.
Strong experience operating and maintaining a hypervisor and cluster environment, such as Proxmox or VMware, including high availability, cluster networking and virtual networking.
Strong experience operating NAS and shared storage platforms, including NFS, capacity management, integrity and performance monitoring.
Proven experience designing and operating backup and restoration solutions, including off-site protection, recovery procedures and regular restore testing.
Extensive implementation and operational experience with Zabbix, Grafana and Elastic Stack, as well as SNMP and IPMI-based monitoring.
Strong infrastructure security knowledge, with the ability to assess an environment, identify vulnerabilities and risks, develop a pragmatic remediation plan and implement the agreed controls.
Strong operational experience with Microsoft 365 and Microsoft Entra ID, including identity, access, authentication and security configuration.
Rigor, method and documentation discipline, together with autonomy, responsiveness during incidents and a strong service mindset.
Professional proficiency in English.
Preferred Experience Degree in IT, networks, cybersecurity or telecommunications at Bachelor's or Master's level.
CCNP certification or an equivalent advanced networking certification.
CompTIA Security+ certification or an equivalent security certification and demonstrated level of expertise.
Experience supporting ISO/IEC 27001 readiness, security governance, identity and access management, audits or compliance improvement programmes.
Experience improving infrastructure in a growing organization where processes, documentation and architecture are still being structured.

Benefits

Comp & perks

Strong technical ownership and autonomy over a growing infrastructure environment.
The opportunity to structure and improve infrastructure reliability, security, performance and scalability.
Direct and visible impact on the operational resilience of Stellar's teams, products and services.
Exposure to telecommunications, mobility, edge computing, connected systems and software environments.
The opportunity to contribute to security governance and future compliance and certification initiatives.
Continuous learning and professional development in a supportive, expert-driven team.
A collaborative, international and multicultural working environment.
A competitive compensation package, including Stellar stock options.