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Senior Enterprise Network Engineer

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Mastercard

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Location:
Poland , Warsaw

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Category:
IT - Administration

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

Join Mastercard’s Global Network Operations team. This is a senior role where you’ll provide Level 2+ support to the Mastercard business. You'll trouble shoot and support complex incidents, take captures and perform packet analysis, support network optimization efforts, work with our network vendors and assist with some project build delivery. You will also be required to participate in our on-call rotation and help train L1 staff when needed.

Job Responsibility:

  • Perform Tier II Network support to the MasterCard business
  • Provide Network support to project teams in support of infrastructure deliverables
  • Perform proactive network analysis to ensure network integrity and performance is in an optimal state
  • Create or update documentation to support the environment as required
  • Plan, coordinate and implement changes to the network following our internal change control process
  • Produce reports in support of any issues resolved or progressed by you
  • Some on-call responsibility and occasional off hours work required

Requirements:

  • Good understanding of BGP, IBGP, OSPF routing protocols
  • Knowledge of Arista routers and switches
  • Cisco routers/switches, ASR, ISR, Nexus 5K, 7K, 6k, 9K, 3540, 3850
  • Firewalls, Checkpoint, Fortigate, Cisco ASA and Palo Alto
  • F5 Load balancer experience
  • Palo Alto Global Protect, supporting cloud infra upgrades and vpn issues for remote workers
  • SDWAN practical exposure in supporting and maintaining SDWAN infrastructure
  • Aruba Wifi WAN deployments (Aruba Certified, ACSP, ACMA, ACMP, ACDX)
  • Cisco Wifi enterprise global deployments (support experience of ISE, Flex, AP, WLC, Prime, MSE)
  • WAN Communications (MPLS/GRE Tunneling)
  • Knowledge of working with Teclo carriers in the delivery & maintenance of MPLS/Internet circuits
  • Automation experience, delivering change or provisioning via the use of automation tools (Glueware, Tufin, Checkpoint CDT, Python scripting, Ansible or others)
  • Supporting Palo Alto Prisma or Cisco AnyConnect remote VPN services
  • Knowledge of cisco Fabric Path and VXLAN
  • Strong Communication and documentation skills
  • Strong analytical/problem solving skills with troubleshooting experience in a pressured environment
  • Experience in operating under a global follow the sun model
  • Must be able to work individually and as part of a team
  • Flexible and Self-motivated
  • Willing and able to adapt to legacy and new technologies
  • Fluent in English

Nice to have:

  • Network Appliances, Netscout & taps, Fireeye, bluecoat
  • Experience in working with file transfer protocols, Connect Direct & SFTP
  • Experience in Payments / Fintech industry in support of authorization traffic or file transmissions
  • Experience in working with an OCC or NOC in support of Incident calls
  • Basic UNIX\Linux scripting skills
  • Use of a variety of network monitoring tools
  • Experience of Batch\job scheduling applications (TWS)
  • Knowledge of tandem \ mainframe technology
  • Open, bare metal, whitebox, greybox Switching
  • Knowledge and experience of using Esxi based solutions

Additional Information:

Job Posted:
January 06, 2026

Expiration:
January 19, 2026

Employment Type:
Fulltime
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