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Senior Software Engineer

Weldon Spring, MO, MO permanent ✦ New IT
Salary & Market Data
Matched to BLS occupational data · Missouri

Job Description

Mastercard is seeking a Senior Software Engineer to build secure, scalable solutions for our Financial Services platforms within the IT department. You will design and implement complex, high-performance applications, lead technical decisions, and ensure best practices in code quality, testing, and security. Collaborating closely with product and engineering teams, you’ll mentor developers and drive innovation. Join a culture that values creativity, collaboration, and continuous growth while working with cutting-edge technologies in a dynamic, inclusive environment.
Design, develop, and maintain secure, scalable financial software solutions
Lead end-to-end implementation of complex features and services
Collaborate with cross-functional teams to define technical requirements and architecture
Ensure code quality through reviews, testing, and best engineering practices
Optimize performance, reliability, and security of critical payment systems
Mentor junior engineers and contribute to technical standards
Java
Spring Boot
Microservices architecture
RESTful APIs
SQL and relational databases
Cloud platforms (AWS/Azure/GCP)
CI/CD pipelines
Containerization (Docker/Kubernetes)
Unit and integration testing
Secure software development practices
Medical Insurance
Dental Insurance
Vision Insurance
Life Insurance
401k
Bachelor’s degree in Computer Science, Software Engineering, or related field
Master’s degree preferred
Relevant certifications such as AWS Certified Developer, Azure Developer Associate, or Certified Kubernetes Application Developer (CKAD)
ATS Score
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