Software Engineer I Job Listing at Mastercard in O'Fallon, MO (Job ID R-271315)

Description

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

Software Engineer I Who is Mastercard
Mastercard is a global technology company in the payments industry. We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible.

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.

Overview
The Software Engineer I is an entry‑level role within Mastercard's Technology organization. This position supports the Cryptographic Security program and the DCaaS (Distributed Crypto as a Service) product by assisting in the development, testing, and maintenance of secure cryptographic and data protection services used across Mastercard's digital payment ecosystem.

Role
• The role provides foundational exposure to secure, scalable service development, encryption technologies, and enterprise engineering standards. Working within Agile delivery teams, the Software Engineer I collaborates with experienced engineers to help deliver high‑quality, reliable, and security‑critical software components.
• Contribute to the design, development, testing, and implementation of software solutions under guidance from senior engineers
• Develop and maintain application code in accordance with established engineering, quality, and security standards
• Create and execute unit tests and support automated testing efforts
• Participate in code reviews and incorporate feedback
• Assist with troubleshooting, defect resolution, and application support
• Collaborate with cross‑functional teams to deliver assigned work on schedule
• Adhere to audit, compliance, and information security requirements

All About You / Experience
• Bachelor's degree in Computer Science, Engineering, Information Technology, or equivalent experience
• Foundational knowledge of software engineering concepts and the software development lifecycle
• Experience with one or more programming languages (academic, internship, or professional) (Rust/Go preferred)
• Familiarity with Agile development practices, testing concepts, and version control
• Strong analytical, problem‑solving, and communication skills
• Ability to work effectively in a collaborative, team‑based environment
Willingness to learn new technologies and tools Mastercard 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: $72,000 - $115,000 USD

 Apply on company website