# Software Engineer II - Full Stack & AI at Mastercard

Mastercard is hiring a Software Engineer II - Full Stack & AI. Level rates it Little AI ●○○○; you can [apply on Level](https://jobsbylevel.com/go/cdbecfed-2cfe-427f-abdb-c934f092fe43?utm_medium=ai-agent).

AI Level 1, AI centrality 21 out of 100. O'Fallon, Missouri.

## Details

- Company: [Mastercard](https://jobsbylevel.com/companies/mastercard)
- AI level: AI Level 1 (score 21 out of 100)
- Location: O'Fallon, Missouri
- Posted: October 13, 2026
- Apply: https://jobsbylevel.com/go/cdbecfed-2cfe-427f-abdb-c934f092fe43?utm_medium=ai-agent

## 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 II - Full Stack & AI Overview The Decision Services (D&S) Technology team develops analytics, reporting, and intelligence solutions that help customers make more informed business decisions. Working closely with product and engineering partners, the team delivers capabilities that transform complex data into actionable insights for customers around the globe. As part of Mastercard's Services organization, the team is expanding its use of AI-powered capabilities to automate manual processes, improve efficiency, and enhance customer experiences. Supporting a rapidly growing product with a multi-year roadmap, this role offers the opportunity to contribute across modern full-stack, cloud, data, and AI technologies. As a Software Engineer II, you will design, build, test, deploy, and support software solutions while contributing to new product capabilities and ongoing platform enhancements. This role requires strong technical fundamentals, independent execution, and a passion for continuous learning. What You'll Do Software Development •Design, develop, test, deploy, and support full-stack applications and services. •Translate business and technical requirements into scalable, maintainable solutions. •Build REST APIs, backend services, and responsive web applications. •Utilize Java, Spring Boot, frontend frameworks, and Python where appropriate. •Apply data structures and programming techniques to solve technical challenges. •Contribute to AI-enabled capabilities and automation initiatives that improve customer outcomes. Design & Architecture •Participate in technical design discussions and architectural reviews. •Apply established design patterns, engineering standards, and development best practices. •Support cloud-native, distributed, and microservices-based applications. •Assist with integrating AI and machine learning capabilities into business solutions. Quality & Secure Engineering •Develop and maintain unit, functional, and integration tests. •Apply secure coding practices throughout the software development lifecycle. •Participate in code reviews to improve software quality and maintainability. •Support system, integration, and user acceptance testing activities. •Identify, troubleshoot, and resolve defects. Performance & Operational Excellence •Analyze and improve application performance, reliability, and efficiency. •Support production incidents, root-cause analysis, and issue resolution. •Contribute to observability, monitoring, CI/CD automation, and operational readiness. •Continuously improve supportability and operational stability. Collaboration •Partner with Product Owners, Engineering, Architecture, and cross-functional stakeholders to deliver business value. •Participate in Agile planning, estimation, and delivery activities. •Work effectively within globally distributed teams. •Demonstrate initiative, accountability, and a continuous learning mindset. •Remain current on emerging technologies and industry trends. Required Qualifications •Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent practical experience. •3-6 years developing and supporting enterprise software solutions. •Proficiency in Java 8+ and Spring Framework, including Spring Boot. •Demonstrated success building REST APIs and microservices-based solutions. •Working knowledge of React, Angular, or comparable frontend frameworks. •Knowledge of Python for

The description is cut here. Read the full offer: https://jobsbylevel.com/jobs/software-engineer-ii-full-stack-ai-at-mastercard-754f5e

Source: https://jobsbylevel.com/jobs/software-engineer-ii-full-stack-ai-at-mastercard-754f5e

## Cite this page

Level. https://jobsbylevel.com/jobs/software-engineer-ii-full-stack-ai-at-mastercard-754f5e.

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