# Senior Software Engineer - Java Full Stack & AI at Mastercard

Mastercard is hiring a Senior Software Engineer - Java Full Stack & AI. Level rates it Little AI ●○○○; you can [apply on Level](https://jobsbylevel.com/go/1804cebe-e019-403c-8537-b0230e1d586a?utm_medium=ai-agent).

AI Level 1, AI centrality 9 out of 100. O'Fallon, Missouri.

## Details

- Company: [Mastercard](https://jobsbylevel.com/companies/mastercard)
- AI level: AI Level 1 (score 9 out of 100)
- Location: O'Fallon, Missouri
- Posted: October 13, 2026
- Apply: https://jobsbylevel.com/go/1804cebe-e019-403c-8537-b0230e1d586a?utm_medium=ai-agent

## Prepare for this job

The job page lists 2 likely interview questions for this offer, with a CV checklist: https://jobsbylevel.com/jobs/senior-software-engineer-java-full-stack-ai-at-mastercard-cde5ad

## 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 - Java Full Stack & AI Overview The Decision Services Technology team within Mastercard's Business & Market Insights organization develops analytics, reporting, and intelligence solutions that help customers investigate transactions, identify fraud patterns, and make informed business decisions. As part of a rapidly growing product area, the team is investing heavily in AI-powered capabilities that automate manual analysis and improve customer outcomes. Supporting a product with significant growth and a multi-year roadmap, engineers on this team play a key role in developing, enhancing, and scaling innovative solutions across full-stack, cloud, data, and AI technologies. As a Senior Software Engineer, you will independently deliver complex solutions, influence technical design decisions, and help drive engineering excellence across the platform. This role requires deep technical expertise, strong ownership, and the ability to mentor other engineers while operating with minimal guidance. What You'll Do Software Development •Design, develop, test, deploy, and support complex software solutions. •Build scalable APIs, backend services, and modern web applications. •Utilize Java, Spring Boot, React or Angular, and Python across the technology stack. •Lead implementation efforts for AI-enabled capabilities and automation initiatives. •Drive technical solutions from requirements through deployment. Design & Architecture •Contribute to architecture decisions and system design discussions. •Apply architectural patterns that support scalability, reliability, and maintainability. •Guide technical implementation across distributed and cloud-based systems. •Support integration of AI and machine learning capabilities into business products. Quality & Operational Excellence •Champion testing, secure coding, and code quality standards. •Conduct code reviews and mentor engineers through technical feedback. •Lead troubleshooting efforts and root-cause analysis for complex issues. •Improve observability, automation, performance, and operational readiness. •Drive continuous improvement initiatives across the engineering lifecycle. Collaboration & Leadership •Partner closely with Product, Architecture, and Engineering leadership. •Serve as a technical mentor for less experienced engineers. •Influence technical direction and engineering best practices. •Contribute to Agile planning, estimation, and delivery leadership. Required Qualifications •Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent experience. •6+ years developing enterprise software solutions. •Advanced proficiency in Java 8+ and Spring Boot. •Deep understanding of REST APIs, microservices, and distributed systems. •Strong knowledge of React, Angular, or comparable frontend frameworks. •Expertise in Oracle or SQL-based database development. •Familiarity with CI/CD practices and modern engineering workflows. •Knowledge of Python for AI, automation, and data-driven applications. •Exposure to GitHub Copilot or similar AI-assisted development tools. •Strong troubleshooting, debugging, and analytical capabilities. •Ability to independently deliver complex technical solutions with minimal oversight. Preferred Qualifications •Experience with AWS, Azure, or GCP. •Knowledge of Docker, Kubernetes, and cloud-native architectures. •Exposure to Databricks, Spark, Delta Lake, or similar technologies.

The description is cut here. Read the full offer: https://jobsbylevel.com/jobs/senior-software-engineer-java-full-stack-ai-at-mastercard-cde5ad

Source: https://jobsbylevel.com/jobs/senior-software-engineer-java-full-stack-ai-at-mastercard-cde5ad

## Cite this page

Level. https://jobsbylevel.com/jobs/senior-software-engineer-java-full-stack-ai-at-mastercard-cde5ad.

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