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Junior Network Engineer

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: MasterCard
Full Time position
Listed on 2026-07-25
Job specializations:
  • IT/Tech
    IT Support, Systems Engineer, Cybersecurity, Network Engineer
Job Description & How to Apply Below
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.

Title and Summary

Junior Network Engineer

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.

Who is Mastercard?

Mastercard is a global technology company in the payments industry.

Our mission is 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.

With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

Overview

The Global Provisioning Team is providing consumers with a single point of contact to request infrastructure changes, reduce hand-offs and SLA wait time.

The Platform Engineer drives efficiency and provides value to our internal customers and stakeholders. The Platform Engineer II drives efficiency and provides value to our internal customers and stakeholders.

The ideal candidate is highly motivated, intellectually curious, is curious on how to improve processes and possesses an entrepreneurial mindset.

Role

In this position, you will:

* Manage Smart PDU monitoring and infrastructure health.

* Support port capacity tracking and utilization reporting.

* Maintain DCIM systems, asset inventories, and operational data.

* Provide operational support for data centre infrastructure services.

* Troubleshoot and resolve infrastructure incidents and service requests.

* Support infrastructure deployments, upgrades, and lifecycle activities.

* Contribute to automation and operational efficiency initiatives.

* Develop technical documentation and operational procedures.

* Collaborate with engineering teams on infrastructure improvements.

* Ensure compliance with operational and security standards.

All About You

* Platform engineering expertise with exposure to two or more of the following areas: LAN, firewalls, 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.

* Knowledge of Cisco's product portfolio: routers, switches, ACI.

* Knowledge of Aruba product portfolio: switches, Clear Pass, APs.

* Knowledge of Arista product portfolio:
Spine leaf architecture, Cloud Vision.

* Cisco certifications such as CCNA required, DCCOR preferred.

* Familiarity with scripting tools such as Python, Ansible and Automation to improve process efficiencies and remove errors due to manual inputs.

* Knowledge of Infoblox (inc. DHCP, DNS).

* Datacenter support experience including racking and cabling of IT equipment is a plus.

* Ability to follow process - Evaluate and propose process enhancements to drive efficiencies.

Desirable or additional capabilities

* 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.

* Implementation of Cisco ACI.

* Understanding of spine-leaf technologies and Cloud Vision is good to have.

* Bachelor's degree in computer science, Math, Engineering or equivalent combination of education and experience.

Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled…
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