Mastercard
Mastercard

60 Mastercard Software Jobs Hiring Near You

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Engineer Who is Mastercard? We work to connect and power an ...

... Mastercard's software environment. • This position is for a Principal Vulnerability Analyst who will work directly with application, engineering, product, and security teams to validate ...

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Manager, Software Engineering Who is Mastercard? Mastercard is a global ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ...

Senior Software Development Engineer

O Fallon, MO · On-site +1

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Development Engineer Overview The Senior Software Development ...

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Software Engineer I AI and Decision Product Enablement Be part of the Shared ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Engineer All About Us MasterCard is a technology company in the ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... This Senior Software Engineer will be responsible for the component design, development and ...

Software Engineer II

O Fallon, MO · On-site +1

$91K - $124K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Software Engineer II Who is Mastercard? Mastercard is a global technology company ...

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Software Engineer I AI and Decision Product Enablement Be part of the Shared ...

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Software Engineer I AI and Decision Product Enablement Be part of the Shared ...

Senior Software Development Engineer

O Fallon, MO · On-site +1

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Development Engineer Overview The Senior Software Development ...

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories ... Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology ...

Showing results 21-40

Mastercard Jobs Information

What is it like to work at Mastercard?

Mastercard is a global technology company that values innovation, collaboration, and diversity, fostering a culture that encourages employees to think creatively and push boundaries.

The company's structure is divided into various teams, including product development, data analytics, and cybersecurity, which work together to drive the company's mission of making payments safe, simple, and accessible to all. Mastercard's global headquarters in Purchase, New York, features an open and modern workspace that promotes collaboration and innovation.

Working at Mastercard may appeal to candidates who are passionate about technology, innovation, and making a positive impact on people's lives, as the company offers opportunities to work on cutting-edge projects, develop new skills, and contribute to a global mission that promotes financial inclusion and economic growth.

What makes Mastercard an attractive place to work?

Mastercard is a leading global payments technology company that plays a significant role in shaping the future of commerce. The company offers a dynamic and inclusive work environment that fosters collaboration, innovation, and diversity, with a focus on employee well-being and professional growth. By joining Mastercard, individuals can contribute to the development of cutting-edge technologies and solutions that have a positive impact on people's lives, while also advancing their own careers through opportunities for learning, mentorship, and leadership development.
What are the most popular categories at Mastercard?
Infographic showing various Software job openings at Mastercard in the United States as of August 2026, with employment types broken down into 100% Full Time. Highlights an 75% Physical, 4% Hybrid, and 21% Remote job distribution.

Senior Software Engineer

MasterCard

O Fallon, MO • On-site

$114K - $151K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 5 days ago


Job description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, 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

Senior Software EngineerWho is Mastercard?
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 respect 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.
About the Role
This is an exciting opportunity for you to join Mastercard's Transaction Switching program and improve authorization response time. Authorization sends billions of transactions among the integrated issuers, acquirers, and service providers worldwide. This position is on the performance engineering team in O'Fallon, Missouri and will partner with the development teams to performance test and tune each release. We are looking for software engineers that are passionate about creating high quality software while keeping performance top of mind.
Do you have a passion for solving complex technical challenges?
Do you love learning new technologies and apply it to your team?
Have you developed software before - preferably in C/C++?
Have you spent time in Linux environments?
Have you created scripts to automate manual tasks (i.e. shell script, TCL, Perl, Python)?
Do you understand throughput, latency, memory and CPU utilization?
Do you have experience and prefer working in an Agile environment?
Role
Work closely with feature teams to identify risks and anticipate problems to ensure that each release does not negatively impact performance
Dig into the code to determine performance bottlenecks and make the improvement
Design, configure, automate, and execute performance tests
Improve the performance environment with your own code, automation, and onboarding of external tools (i.e. Dynatrace and Splunk)
Work collaboratively and effectively in a fast-paced environment
All About You
Proven experience developing backend applications in a Linux environment with C and/or C++ programming language(s)
Deep knowledge and experience of computer architecture with throughput, latency, memory and CPU utilization for performance engineering to test, debug and troubleshoot performance issues.
Clear experience with automation to create scripts for manual tasks (I.e., shell scripting, TCL, Perl, Python)
#AI3Mastercard is a merit-based, inclusive, equal 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. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com 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.

In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

Pay Ranges

O'Fallon, Missouri: $115,000 - $184,000 USD