Senior Network Support Engineer

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Senior Network Support Engineer

As a Senior Network Support Engineer, you will be supporting national critical infrastructure in a dynamic and agile environment. You'll be hands‑on, giving technical help to customers both internal and external, being the first point of contact for network related issues of a large multi‑site, multi‑vendor network communication environment. 24x7 support commitments will require participation in a rota based, on‑call system that will result in callouts outside of standard working hours.

• Troubleshoot and resolve network communication and operational issues, impacting national critical infrastructure and internal networks.
• Provide network support out of hours as part of an on‑call rota.
• Configure and manage network devices including routers, switches, firewalls and VPNs.
• Collaborate with vendors and service providers to resolve network‑related issues.
• Manage installs of WAN networks.
• Collaborate in Agile planning sessions.
• Implement project work assigned via Agile Release Trains.
• Carry out network changes out of hours as per company change policies.
• Document network configurations, changes, and troubleshooting processes to maintain accurate records.
• Contribute to the implementation of network security protocols and best practices to protect company data.
• Stay updated with emerging technologies and industry trends to continuously enhance your knowledge and skillset.
• Escalate unsolved issues to relevant internal or external teams.

• 5 years of IT experience in Networking (LAN/WAN, Firewalls, Security technologies).
• TCP/IP protocol communications.
• Strong knowledge of Cisco’s/Palo/F5 product portfolio.
• Familiarity with Project Management methodologies and best practices.
• Enterprise networks.
• WAN Networks.
• CCNP certification or equivalent.
• Experience working within a Fintech.
• Policy based VPN Technologies.
• Experience with SSL certificate management and implementation.
• Understanding of Network Security principles.
• Knowledge of SAFe (Scaled Agile Framework).

• Well established troubleshooting techniques.
• Proficiency in network technologies such as BGP, OSPF, VPN, MPLS.
• Strong analytical and problem‑solving skills with attention to detail.
• Effective verbal and written communication skills.
• Ability to work collaboratively in a team environment and contribute positively to team dynamics.
• A proactive approach to learning and professional development.

Supporting 24/7 global network environment – which entails between 1-4/1‑6 on‑call rotation following Monday 17:00 – Monday 08:00. Occasional travel may be required. Hybrid working (3 days a week in office).

• Abide by Mastercard’s security policies and practices;
• Ensure the confidentiality and integrity of the information being accessed;
• Report any suspected information security violation or breach, and
• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.