Senior Software Engineer, Java Full Stack & AI

Mastercard

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Quick summary

Work type: On-site
Location: O Fallon, IL
Salary: $115,000–$184,000 / yr
Posted: 1 day ago
Freshness: Confirmed live today
Nearby: 99+ roles within 25 mi

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $163k

This role $150k

$103k $223k

below market most similar roles pay here above market

This role pays less than 66% of similar roles. Most pay $149,500–$177,250 — the blue band above. At the midpoint, this role pays about $150k versus about $163k for comparable roles.

Based on 240 similar postings.

Employer

About Mastercard

Mastercard is a global technology company in the payments industry, processing transactions between financial institutions and merchants using its extensive network of credit, debit, and prepaid card products. Industry: Payments Technology & Financial Services

Mastercard currently has 159 open roles on FindRole.

Listed pay typically runs $120,000–$204,000 across 145 roles with salary data.

Most-posted roles

View all roles at Mastercard

At a glance

TL;DR · Senior Software Engineer, Java Full Stack & AI

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The Senior Software Engineer - Java Full Stack & AI joins the Decision Services Technology team to develop analytics, reporting, and intelligence solutions for investigating transactions and identifying fraud patterns. This role involves designing, developing, testing, and deploying complex software solutions, including scalable APIs, backend services, and modern web applications. You will lead the implementation of AI-enabled capabilities and automation initiatives while contributing to architecture decisions for distributed and cloud-based systems. The technical stack includes Java 8+, Spring Boot, Python, React, Angular, and Oracle or SQL-based databases. Key responsibilities include mentoring engineers, conducting code reviews, and ensuring operational excellence through CI/CD practices. You will solve business problems by integrating AI and machine learning capabilities into products to automate manual analysis and improve customer outcomes.

What does a Software Engineer earn in Illinois?

Median $177875 from 76 postings across 30 companies.

See salary data

Skills

Java Spring Boot Python React Angular REST APIs Microservices Oracle SQL CI/CD AWS Azure GCP Docker Kubernetes Databricks Spark Delta Lake GitHub Copilot

What you'll do

Design, develop, test, and deploy complex software solutions using Java, Spring Boot, and Python.
Build scalable APIs, backend services, and modern web applications using React or Angular.
Lead the implementation of AI-enabled capabilities and automation initiatives into business products.
Contribute to architecture decisions and system designs for distributed and cloud-based systems.
Conduct code reviews and provide technical mentorship to less experienced engineers.
Lead troubleshooting efforts and root-cause analysis for complex production issues.
Improve observability, performance, and operational readiness across the engineering lifecycle.
Drive technical direction and engineering best practices for the platform.

What we're looking for

Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent experience.
6+ years of experience 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.
Knowledge of Python for AI, automation, and data-driven applications.
Experience with AWS, Azure, or GCP (preferred).

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