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Job Information

MasterCard Senior Software Engineer | Developer Tools & Foundational Services in Arlington, Virginia

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

Senior Software Engineer | Developer Tools & Foundational Services

Position overview

The Developer Tools & Foundational Services teams aim to provide common, high-performance, and easy-to-use solutions for cross-cutting concerns. We work closely with market-facing product engineering teams to help them take maximum advantage of these capabilities and to evolve our core platform to meet their needs and the needs of our customers.

We are looking for a Senior Software Engineer who is excited to engage deeply with the core technologies we use, design and implement robust and secure "common code", and create a great development experience for other engineers through libraries, APIs, and tooling. As a member of our team, you would apply your skills to provide reusable solutions for all development teams in domains like authentication, caching, serving static assets, logging, error handling, build tooling, unit and integration testing, and scheduling asynchronous work.

Engineers work in small, flexible teams. Every team member contributes to designing, building, and testing features. There are no rigid organizational structures, and each team uses processes that work the best for that team members and projects.

What is Data & Services?

The Data & Services Team (D&S) is a key differentiator for Mastercard. Focused on thinking big and scaling fast around the globe, this team is responsible for end-to-end solutions for a diverse global customer base. We combine traditional management consulting with our rich data assets and in-house technology to provide our clients with powerful insights and tools to drive fact-based decision making. Centered on data-driven technologies and innovation, our services include consulting, loyalty and marketing programs, test-and-learn business experimentation, and data-driven information and risk management. While specializing in the payments industry, Mastercard Data & Services also works closely with major retailers, airlines, and other enterprises, leveraging data and insights garnered from within and beyond its network.

We are looking for passionate and talented technologists, who share our vision for empowering our customers to make better fact-based decisions, to join us and shape the growth of our team.

Who is Mastercard?

Mastercard is the global technology company behind the world’s fastest payments processing network. We are a vehicle for commerce, a connection to financial systems for the previously excluded, and a technology innovation lab. We ensure every employee has the opportunity to be a part of something bigger and to change lives. We believe as our company grows, so should you.

Position responsibilities:

As a part of Data & Services, you will build revolutionary products that advance how businesses all over the world seize the most value from their data. As a Senior Software Development Engineer within Foundational Services, you will:

  • Collaborate across teams with exceptional peers who are passionate about what they do

  • Mentor and provide guidance to other team members

  • Design and build reusable software libraries and infrastructure that serves a broad audience and empower developers to rapidly build high quality, secure applications

Ideal candidate qualifications:

-Deep understanding of one or more programming languages/technology stacks

-You gravitate towards understanding the ins and outs of the languages/frameworks you work with vs. just using them for the task at hand

Experience having worked with and designed "common code" and/or developer tools

  • Experience having worked on system design problems

  • Knowledge of application security principles and best practices

Had you been with us last month, you would have:

  • Contributed to the design, development, testing, and rollout of a new algorithm to better handle load in our job scheduling engine.

  • Enhanced our internal script sharing tool to support LinqPad scripts written in .NET 6.

  • Migrated our exception handling service from .NET Framework to .NET 6 and C#10, making fly-by updates to add Swagger and improve performance.

  • Helped build libraries and tooling to revamp the front-end infrastructure of hundreds of applications, enabling faster and more modern practices for globalization and remote module loading.

  • Designed and written health checks for critical services to ensure they are properly configured and initialized before going live.

  • Answered questions from and pair programed with other development teams who use our core APIs and NuGet packages.

Mastercard is an equal opportunity employer that values diversity and inclusion. Applicants will be considered and treated without regard to gender, gender identity, race, color, ethnicity, national origin, religion, sexual orientation, veteran or disabled status, or any other characteristic protected by applicable law

#LI-TE1In the US, 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

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

Everyone wants easier ways to pay;

we invent them.

Checkout lines are slow;

we speed them along.

Merchants want more sales;

we give them data and insights.

People need financial access;

we connect them.

Corporate purchasing is complicated;

we make it simple.

Commuters are busy;

we speed them on their way.

Governments need greater efficiencies;

we help create them.

Small businesses are virtual;

we give them access to a world of buyers.

Retailers want to fight fraud;

we provide the tools.

Requisition ID: R-182121