Job title: Senior Core Network Engineer
Office location: Spanskih boraca, Belgrade - Hybrid working (3 days in the office)
About the role:
- Maintain core network services
- Network optimization and implementation of network services
- Manage and handle network incidents
- Create and keep network documentation up to date and run small network projects
- Keep a high level of customer satisfaction by delivering reliable broadband service to the customers
What will you be doing?
Maintain core network services
- Perform daily maintenance and operational tasks on core and aggregation network devices
- Configure and deploy new core network services
- Install software updates, firmware, and security patches on network equipment
- Update switches with the latest configurations
- Monitor network performance and availability using Network Management Systems (NMS)
Network optimisation and implementation of network services
- Plan, test, and implement new network services and solutions
- Execute planned maintenance activities with minimal impact on customers and business operations
- Perform migration of network services and infrastructure
- Optimize core, aggregation, and access network performance
- Prepare configurations for new core and aggregation switches
- Plan and support network expansion
- Implement scalable and resilient network solutions aligned with business requirements
Manage and handle network incidents
- Respond promptly to alarms and incidents reported via monitoring tools, ticketing systems, or email alerts
- Provide technical support and guidance to Technology Operations Centre (TOC) engineers
- Maintain clear communication with internal and external stakeholders during incident resolution
- Document network issues, corrective actions, and provide reports to management
- Escalate incidents to vendors or relevant teams when necessary to ensure rapid resolution
- Proactively identify and mitigate potential network risks and service disruptions
- Troubleshoot network issues efficiently to minimize downtime and maintain service continuity
Create and keep network documentation up to date
- Create and maintain documentation related to planned maintenance activities
- Keep accurate and up to date records of network incidents and resolutions
- Create and keep up to date technical documentation for network projects and infrastructure
What we are looking for:
- Bachelor's degree in the relevant field
- CCIE and CCNP certification or relevant experience in an ISP or Telecom company
- Previous experience in network engineering including design, planning, installation, test and maintenance of IT networks
- Deep understanding of Ethernet, MPLS, IP, Routing and broadband technologies and protocols
- Hands on network troubleshooting skills
- Good written & spoken English language skills
Some of our key Benefits:
- Competitive salary
- Global Remote working for up to 2 week per year for those who are able to work remotely
- 25 days' paid holiday increasing each year, to a max of 35
- Extra days off for your birthday, move house and volunteer
- Access to a wellbeing platform, Rezilient
- Partnership with SOS Children's Village
- Private medical insurance
- Fit Pass discount
- Technology discount
- Team sports activities
- Massages in the office
What happens next?
- You apply (please send us your CV in English)
- We carefully review your application
- We'll get back to you — even if it's a no (for now)
