Senior Software Engineer Job Listing at Mastercard in O'Fallon, MO (Job ID R-247121-O Fallon, United States of America, 63368-7263)

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

Senior Software Engineer Are you ready to revolutionize the world of small and medium enterprises (SMEs)? Mastercard is on the hunt for elite engineers to join our SME Unified Business Experience team. We're crafting groundbreaking global products that deliver unparalleled features and platforms to SMEs across the globe.

We are seeking a Senior Software Engineer to join our team and take ownership of designing, developing, and delivering high-quality software solutions. In this role, you will define technical requirements, customize and integrate applications based on Mastercard's standards, and lead key aspects of the software development lifecycle. You'll also play a key role in mentoring teammates, driving innovation, and improving development processes.

Responsibilities:
• Design, develop, and implement technical solutions that meet business needs, following Mastercard's best practices and development standards.
• Lead day-to-day development and maintenance activities to ensure service level agreements (SLAs) are met.
• Manage the full software development lifecycle, including requirements gathering, design documentation, testing strategy, performance benchmarking, release planning, and risk mitigation.
• Evaluate and implement new technologies, frameworks, and vendor solutions through research and proof-of-concept (PoC) efforts.
• Mentor and train other team members; lead knowledge sharing sessions and ensure smooth knowledge transfer from vendor technologies.
• Collaborate with vendors for product support and implementation.
• Champion quality assurance and control throughout the SDLC—code reviews, security reviews, testing, and process improvements.
• Coordinate with offshore teams to manage and track daily development activities.

Qualifications:
• Proficient in full stack development using React, Node.js, Java, and Spring Framework.
• Hands-on experience building, deploying, and maintaining scalable, secure software solutions in production environments.
• Strong understanding of software engineering principles, system architecture, and modern development methodologies.
• Strong problem-solving and debugging skills, with a focus on performance, scalability, and reliability.
• Excellent verbal and written communication skills with a collaborative, team-first mindset.
• Demonstrated ability to work independently, manage competing priorities, and deliver high-quality outcomes in fast-paced environments.
• Bachelor's degree in Computer Science, Information Systems, Engineering, or equivalent practical experience.

This role is not eligible for Mastercard's work authorization sponsorship. As such, candidates must be eligible to work in the United States, now as well as in the future, without employer sponsorship.

#LI-TE1 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 based on location, experience and other qualifications for the role and may be eligible for an annual bonus or commissions depending on the role. 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 new parent leave, up to 20 paid days bereavement leave), 10 annual paid sick days, 10 or more annual paid vacation days based on level, 5 personal days, 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, gender-inclusive benefits and many more.

Pay Ranges

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

 Apply on company website