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# Software Engineer

- **Company:** Mastercard
- **Location:** United States
- **Experience:** Expert
- **Salary:** $115,000.0 - $184,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Application Frameworks, Software Applications, User Authentication, Unit Testing, Configuration Management, Code Coverage, Code Review, Cyber Security, Information Systems, Computer Programming, Continuous Delivery, Continuous Integration, Data Security, Data Structures, DevOps, Distributed Systems, Groovy, Performance Tuning, Software Architecture, Software Maintenance, Systems Development Life Cycle, Requirements Management, Secure Coding, Server Administration, Software Construction, Software Engineering, Strategies of Testing, Data Logging, Performance Testing, Backend, Git, Integration Tests, Information Technology, Bitbucket, Api Design, Software Coding, Docker, Jenkins, Artifactory, Microservices
- **Published:** October 2, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-software-engineer-o-fallon-mo--4484be30-878a-4e89-ba65-498e492a3fa5

## About the Role

* Strong understanding of software design, architecture, data structures, secure development practices, testing, and performance optimization.
 * Strong programming and automation skills using Java, Groovy, or similar languages
 * Experience designing, building, testing, deploying, and maintaining software applications using engineering best practices.
 * Strong understanding of service-oriented, microservices, and API-driven architectures
 * Experience building and supporting scalable backend services, APIs, and distributed systems
 * Experience designing, building, and maintaining CI/CD pipelines to enable reliable, automated, and high-quality software delivery.
 * Hands-on experience with DevOps tools such as Git/Bitbucket, Jenkins, XLR, Chef, Artifactory, Docker Registry, and similar platforms
 * Experience automating infrastructure provisioning, configuration management, deployments, and operational workflows
 * Knowledge of observability, monitoring, logging, production support, and security best practices including authentication, authorization, secure API design, and data protection
 * Ability to collaborate effectively in a globally distributed engineering environment to improve software delivery processes
 * Demonstrate a continuous learning mindset with interest in AI-driven automation, innovation, and operational efficiency

Education

 * Bachelor's degree in Information Systems, Information Technology, Computer Science, Engineering, or equivalent work experience., Analysis Skills, Application Framework, Application Programming Interface (API), Architectural Design, Artificial Intelligence (AI), Authentication, Automation, Benchmarking, Best Practices, Chef (Configuration Management), Code Reviews, Coding Standards, Computer Programming, Computer Science, Configuration Management, Contingency Plans, Continuous Deployment/Delivery, Continuous Integration, Cost Analysis, Cost Effectiveness Analysis, Data Quality, Data Structures, DevOps, Distributed Computing, Docker, Feasibility Analysis, Functional Testing, Git, Groovy Programming Language, Identify Issues, Incident Management, Information Assets, Information Technology & Information Systems, Information/Data Security (InfoSec), Integration Testing, Java, Jenkins, Knowledge Transfer, Leadership, Maintain Compliance, Mentoring, Microservices, On Call, Operational Support, Performance Testing, Performance Tuning/Optimization, Process Improvement, Product Support, Production Support, Proof of
Concept, Quality Assurance, Quality Assurance Methodology, Quality Control, Regulatory Compliance, Requirements Management, Risk, Root Cause Analysis, Scalable System Development, Secure Coding, Service Level Agreement (SLA), Software Administration, Software Architecture Design, Software Development Lifecycle (SDLC), Software Engineering, Systems Maintenance, Team Player, Technical Training, Technical/Engineering Design, Test Plan/Schedule, Test Strategy, Testing, Unit Test, Use Cases, Vendor/Supplier Selection

## Description

* Plan, design, architect, and develop secure, scalable, and maintainable technical solutions and alternatives to meet business requirements in adherence with Mastercard standards, processes, and best practices
 * Lead day-to-day system development and maintenance activities of the team to meet service level agreements (SLAs) and create solutions with a high level of innovation, cost effectiveness, quality, reliability, and faster time to market.
 * Accountable for the full systems development life cycle including creating high-quality requirements documents, use cases, designs, and other technical artifacts including but not limited to detailed test strategies, performance benchmarking, release rollout and deployment plans, contingency/back-out plans, feasibility studies, cost and time analysis, and detailed estimates.
 * Design, develop, test, deploy, and maintain software applications while applying software engineering best practices, secure coding standards, and effective use of data structures
 * Perform system maintenance, production incident management, troubleshooting, root cause analysis, remediation, and on-call support while ensuring operational reliability and observability
 * Select appropriate technical frameworks and solution delivery methodologies. Adapt technical artifact templates based on project and technology needs. Contribute ideas to help ensure required standards and processes are in place. Maintain solution and technology roadmaps
 * Research and evaluate current and upcoming technologies and frameworks.
 * Participate in PoCs (Proof of Concept) and help the department with selection of vendor solutions, technologies, methodologies, and frameworks.
 * Collaborate with vendor resources for product support
 * Conduct brownbag sessions on new and upcoming technologies, methodologies, and application-appropriate frameworks. Ensure knowledge transfer of vendor technology to Mastercard staff and provide technical training to team members
 * Follow and promote Quality Assurance and Quality Control processes in the department. Actively look for opportunities to enhance standards and improve process efficiency. Mentor and guide team members during all phases of the SDLC
 * Ensure adequate test coverage through unit, functional, integration, and performance testing. Perform quality inspections and walkthroughs throughout the SDLC including requirements reviews, design reviews, code reviews, and security reviews to ensure compliance with Mastercard standards.
 * Coordinate offshore development and manage day-to-day activities., 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.


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