Lead Software Engineer – Mastercard | O'Fallon, MO | $138,000-$221,000 | Full-Time

Join Mastercard as a Lead Software Engineer in O'Fallon, MO. Drive cutting-edge solutions in cryptography, cloud, and DevOps. Competitive salary & benefits. Apply now!

Mastercard is seeking a Lead Software Engineer to join our global Customer Connectivity team in O’Fallon, Missouri. If you're passionate about cutting-edge technology, cryptography, and scalable platforms, this role offers the opportunity to innovate and lead while shaping the future of secure digital payments.

Responsibilities

As a Lead Software Engineer, you will:

• Serve as a technical leader driving innovative, enterprise-wide solutions in cryptographic security.
• Collaborate with product managers, analysts, and architects to design and implement scalable platforms.
• Lead the analysis, design, development, and delivery of software solutions for shared security services.
• Ensure adherence to SDLC and governance processes, focusing on high-performance, globally scalable platforms.
• Drive the development of new APIs, microservices, and messaging systems using Java, REST APIs, and Spring Framework.
• Partner with SRE and DevOps teams to fine-tune system architectures and deployments.

Qualifications

Required Skills:

• Extensive experience in key management systems, cryptographic concepts, and scalable platform development.
• Proficiency in programming languages and frameworks, including:
• Java, Spring Framework, and REST APIs
• Kafka, Axon, and messaging systems like MQ
• Expertise in cloud and DevOps architecture:
• Kubernetes, Docker, Chef, Azure, AWS
• Strong database knowledge, especially PostgreSQL.
• Hands-on experience with CI/CD tools like Jenkins, GIT, and SonarQube.

Nice-to-Have Skills:

• Proficiency in C++, JNI, and HSM.
• Experience in confidential computing and cryptographic protocols.

Soft Skills:

• Strong leadership and mentorship capabilities.
• Exceptional problem-solving and collaboration skills.

Perks & Benefits

At Mastercard, we believe in rewarding talent with a comprehensive benefits package:

• Competitive salary with annual bonuses and commissions.
• Medical, dental, vision, and life insurance plans.
• Generous paid leave, including 16 weeks of parental leave.
• 401(k) with company match and deferred compensation.
• Tuition reimbursement and professional development opportunities.
• Fitness reimbursement and access to on-site fitness facilities.
• Inclusive benefits supporting diversity, equity, and inclusion.

Why Join Mastercard?

Mastercard is more than just a payments company. We power economies and empower people across 200+ countries. By joining our Customer Connectivity team, you’ll play a vital role in building secure, scalable systems that help governments, businesses, and individuals thrive.

How to Apply

Ready to make a global impact? Submit your application today by visiting our careers page:

Mastercard is an equal-opportunity employer committed to diversity and inclusion. Applicants requiring accommodations during the recruitment process can reach out to reasonable_accommodation@mastercard.com.