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MasterCard Senior Engineer, Software Development Engineering, Network Automation 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 at 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

Senior Engineer, Software Development Engineering, Network Automation

"As a member of the Software Defined Network (SDN) Platform team, you will own and deliver the code to bring our network to the next level. As a ""militantly automated"" team, we work in Source Control and let pipelines drive our work. We believe in configuration modeling and defining standards via automation so the tooling can do the heavy lifting for us. You will participate on a team that designs, builds, and runs world-class and leading edge networking technology on many exciting platforms.


  • Manages software modules that perform the automation tasks

  • Terraform (infrastructure model management), Gluware (configuration modeling)

  • Scripting with bash and Python and using API clients and calls

  • Understand and apply software development concepts to machinery that manages the network

  • Use git and your choice of IDE to define and manipulate configuration and code

  • Create and participate in peer code reviews through pull requests

  • Ongoing evaluation and improvement of our software modules

  • Work with stakeholders in Design and Engineering to enhance capabilities

  • Actively find the best way to utilize our robust tooling solutions… and move us in that direction

  • Engage in projects to move the “brownfield” to the “greenfield”

  • Triage and ownership of automation platform delivery

  • Support what we build – either by machine or by hand

  • Work with partners and external vendors to ensure all needs are addressed

  • We are on the cutting edge, so often need to work with vendors to drive forward

  • Work across internal IT teams to resolve complex issues

  • File and follow up on bugs and feature enhancements needed for industrialization of our offerings

  • Change management, compliance and execution, with a strong focus on process management

  • We document every solution to build an internal Knowledge Base, usable globally

  • Comply with change management procedures and integrate with existing systems

  • Ensure consistent auditability of the system and of changes to the platform

The ideal candidate:

  • Has a degree or similar in IT / Computer Science.

  • Is familiar with driving complex software projects from design and development to ongoing management

  • Natively understands CI/CD topics and development methodologies including pipelines, pull requests, git, command line, etc

  • Is comfortable with networking concepts/architecture and displays proficiency in routing, switching, NAT and network services such as load balancers

  • Displays willingness and aptitude to learn

  • Has a proven ability to work under pressure and meet deadlines

  • Is able to produce quality technical documentation

  • Has good communication skills and is eager to work on an awesome team


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.

Requisition ID: R-114351