Senior Network Infrastructure Engineer

• Banking
• B2B up to 170zł/h
• Hybrid work in Gdańsk/Gdynia/Warsaw/Łódź - 3 days per week in the office

We are looking for an experienced Senior Network Infrastructure Engineer to support a complex network infrastructure assessment, optimization, and migration initiative within a large-scale enterprise banking environment. This role emphasizes the need for strong analytical skills, proficiency in enterprise networking, and the ability to work collaboratively within cross-functional teams.

Main Responsibilities

Core duties include the assessment of existing network infrastructure and support for network segmentation initiatives.

• Perform detailed assessments of existing enterprise network infrastructure.
• Analyze current network topology and traffic segmentation.
• Identify infrastructure dependencies and network performance bottlenecks.
• Review connectivity across servers and applications.
• Assess NIC ports and overall network capacity.
• Analyze Data and Management network traffic flows.
• Support the separation of Data and Management traffic.
• Design and document the target network architecture.
• Develop technical migration approaches.
• Provide hands-on support during migration processes.

Key Requirements

• Strong professional experience in enterprise networking and infrastructure engineering.
• Advanced knowledge of TCP/IP networking, IP addressing, subnetting, routing, and switching.
• Hands-on experience with VLAN configuration and network segmentation.
• Solid understanding of physical and logical network architecture.
• Proven experience supporting network infrastructure migrations.
• Ability to analyze complex network topologies.
• Experience troubleshooting network-related issues.
• Understanding of Data and Management network separation.
• Strong analytical and problem-solving skills.
• Very good English communication skills.

Nice to Have

• Previous experience in banking or financial services.
• Familiarity with Cisco and Juniper networking technologies.
• Experience with network monitoring and analysis tools.
• Knowledge of backup and replication traffic patterns.
• Understanding of network security and access control principles.
• Experience preparing technical migration plans.