Mastercard Jobs

Job Information

MasterCard Principal Network Engineer in O'Fallon, Missouri

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion ( for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Job Title

Principal Network Engineer

About the Team:

• The Network Engineering team responsibilities include configuring and maintaining Mastercard’s global network which includes Datacenter, customer, and corporate.

• The team is also responsible for maintaining the global network standards, complying with audit, and deployment of new technologies to fit business needs.

• Work on creating low level network designs deriving from the architectural standards and implementation oversight including associated documentation.

• Work on Datacenter designs to integrate customer on-boards.

• Global unified communications deployment with VOIP, Video, and QoS in both regional office and campus environments.


• Design solutions for merged or acquired companies to work with the Mastercard network.

• Design, engineering, and implementation of complex network solutions in a variety of disciplines.

• Research and develop innovative solutions using the architectural standards for customer specific, datacenter specific, or corporate office specific use-cases.

• Work on creating low-level designs for the new products and architectural standards set by the architecture team.

• Research and develop automation tools to support the Continuous Integration / Continuous Development (CI/CD) movement.

• Provide fourth level support to the Operations Command Center; investigation, troubleshooting and resolving network communications and operations problems impacting customer, backbone access, or performance on a global basis

All About You

• Have you ever analyzed, tested, authored low level designs, and brought any new technology solution to implementation?

• Have you ever performed detailed problem analysis and troubleshooting? Have you lead the effort to solve the problem collaboratively?

• Have you ever deployed applications or virtual infrastructure in the cloud?

• Have you ever designed and worked with a cross-functional team to deploy a network routing and switching solution per the delivery requirements on a global scale?

• Have you ever had to work with an acquired company to merge networks and applications?

• Network engineering, design, and architecture expertise with exposure to two or more of the following areas: LAN/WAN, firewalls, VOIP, QoS, Routing and Switching technologies while adhering to standard design methodologies and best practices

• Mastery of TCP/IP protocol communications, addressing & subnetting, knowledgeable with IPV6 addressing

• Firewall experience: Checkpoint as well as Palo Alto.

• Extensive knowledge of Cisco’s product portfolio; routers, switches.

• Knowledge of Aruba product portfolio; switches, ClearPass, APs.

• Extensive knowledge of Network diagnostics, protocols, and disciplines, EIGRP, OSPF, BGP, SNMP, VPN, SSH, and MPLS technologies.

• Knowledge of security and encryption technologies including IPSEC & GRE tunnels on routers and firewalls.

• Experience with scripting tools such as git, Terraform, PowerShell, Python, or Ansible.

• Ability to design, engineer and implement Arista spine-leaf technologies.

• Familiarity with VMware NSX-T platform.

• Strong verbal and written communications skills, and excellent customer support capabilities

• Self-motivated demonstrating strong organizational and listening skills; and very detail oriented with the ability to carry out assigned tasks with minimal supervision

• Ability to consistently act in a professional manner and communicate with all levels of the organization, both internally and externally

• Methodical problem resolving skills and mastery of developing high level and detailed network designs; solid web applications and technologies a plus; Cisco certifications such as CCNP or CCDP desired but not required.

• Design, engineer, and implementation of Software Defined Networking. Special focus on VMWare NSX and/or Cisco ACI.

• Ability to research and develop innovative solutions that support cloud connect strategies with Azure and AWS.

• Bachelor’s degree in Computer Science, Math, Engineering or equivalent combination of education and experience

Due to COVID-19, most of our employees are working from home. We’ve implemented a virtual hiring process and continue to interview candidates by phone or video and are onboarding new hires remotely. We value the safety of each member of our community because we know we’re all in this together.

Mastercard is an inclusive Equal Employment Opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.​

If you require accommodations or assistance to complete the online application process, please contact and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility

Every person working for, or on behalf of, Mastercard is responsible for information security. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position must:

• 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.

Requisition ID: R-144057